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finding location from requestLocationUpdates() from GPS not working

I am creating a map application, which gets location from GPS, i'm finding location from requestLocationUpdates(), but i'm not getting any response from GPS provider, however when i'am using network provider i'am getting location, can anyone help where i'm wrong,
Also i'am new to android app development, so i'll appreciate any tips to optimize my code(make more efficient with less mess),
Here's my code :
public void trackLocation(){
if (ContextCompat.checkSelfPermission(activity.getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
locationManager = (LocationManager) activity.getSystemService(Context.LOCATION_SERVICE);
boolean flag;
Boolean dlg;
flag = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (flag) {
Log.v("function", "onClick");
myLocationListener = new MyLocationListener();
dlg = true;
} else {
dlg = gpsDialog();
progressBar.setVisibility(View.GONE);
}
Log.d("maps", "Requesting location updates");
if(dlg) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, myLocationListener);
}
}
}
public class MyLocationListener implements LocationListener {
#Override
public void onLocationChanged(Location location) {
if (ActivityCompat.checkSelfPermission(MapsActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MapsActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
Log.d("maps", "on location changed : "+location.getLatitude() + "---"+ location.getLongitude());
locationManager.removeUpdates(myLocationListener);
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
Log.d("maps" , "Status Changed");
}
#Override
public void onProviderEnabled(String s) {
Log.d("maps" , "Provider Enabled");
}
#Override
public void onProviderDisabled(String s) {
Log.d("maps" , "Provider Disabled");
}
}
public Boolean gpsDialog(){
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setMessage("Do you want to start GPS?")
.setCancelable(false)
.setTitle("GPS DISABLED")
.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// finish the current activity
Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
activity.startActivity(myIntent);
dialog.cancel();
}
})
.setNegativeButton("No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// cancel the dialog box
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
progressBar.setVisibility(View.GONE);
return false;
}

Google maps uses user's lastKnownLocation for location, If the lastknownLocation is unknown it takes time to fetch location through different provider say GPS or Network, whichever is easy. I would suggest to use lastKnownLocation as base location and update it with LocationListener. It is most optimized way of processing location.
if (ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&&
ActivityCompat.checkSelfPermission
(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
{
requestPermissions(new String[]{
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION
}, 1);
}
else {
// enable location buttons
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
// fetch last location if any from provider - GPS.
final LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
final Location loc = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
//if last known location is not available
if (loc == null) {
final LocationListener locationListener = new LocationListener() {
#Override
public void onLocationChanged(final Location location) {
// getting location of user
final double latitude = location.getLatitude();
final double longitude = location.getLongitude();
//do something with Lat and Lng
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
//when user enables the GPS setting, this method is triggered.
}
#Override
public void onProviderDisabled(String provider) {
//when no provider is available in this case GPS provider, trigger your gpsDialog here.
}
};
//update location every 10sec in 500m radius with both provider GPS and Network.
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10*1000, 500, locationListener);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10000, 500, locationListener);
}
else {
//do something with last known location.
// getting location of user
final double latitude = loc.getLatitude();
final double longitude = loc.getLongitude();
}
}
Permission handling:
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
switch (requestCode) {
case 1:
if (grantResults[0] != PackageManager.PERMISSION_GRANTED){
//do something
}
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}

Your code is correct. GPS usually doesn't give you any info within the building, if you try to test the app outside, you will get the results.

firstly check gps_enabled return true or not.
LocationManager lm = (LocationManager) mCtx
.getSystemService(Context.LOCATION_SERVICE);
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
By this code you get accurate lat , long
Location net_loc = null, gps_loc = null, finalLoc = null;
if (gps_enabled)
gps_loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (network_enabled)
net_loc = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (gps_loc != null && net_loc != null) {
if (gps_loc.getAccuracy() >= net_loc.getAccuracy())
finalLoc = gps_loc;
else
finalLoc = net_loc;
// I used this just to get an idea (if both avail, its upto you which you want to take as I taken location with more accuracy)
} else {
if (gps_loc != null) {
finalLoc = net_loc;
} else if (net_loc != null) {
finalLoc = gps_loc;
}
}

Fast and Frequent location Update in android..?

public void getUserLocation() {
Location location;
TextView lon = (TextView) findViewById(R.id.textView2);
TextView lat = (TextView) findViewById(R.id.textView3);
boolean GpsEnable = false, NetworkEnabled = false;
locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
// String locationProvider = LocationManager.GPS_PROVIDER;
GpsEnable = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
NetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
// locationManager.requestLocationUpdates(locationProvider,0,0,locationListner);
if (!GpsEnable && !NetworkEnabled) {
Toast.makeText(getBaseContext(), "No Provider Availabe",
Toast.LENGTH_SHORT);
} else {
if (NetworkEnabled)
Toast.makeText(getBaseContext(), "Network Provider Available",
Toast.LENGTH_SHORT);
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 0, 0, this);
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
lon.setText("Latitude" + location.getLatitude());
lat.setText("Longitude " + location.getLongitude());
}
if (GpsEnable) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 0, 0, this);
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
lon.setText("Latitude" + location.getLatitude());
lat.setText("Longitude " + location.getLongitude());
}
}
}
}
}
I had done both with GPS and network provider.. I want to know how we get exact current location in Google maps? Is there any way or algorithm by which i can get longitude and latitude of my location using internally Google maps?
Thanks in Advance

I have Followed this Tutorial for Fast Update and Initial SetUp for GoogleMap v2
Initial Setup Here
Alternative for LocationUpdate
Hope this could help...:)

public void retriveLocation(){
try {
String locCtx = Context.LOCATION_SERVICE;
LocationManager locationmanager = (LocationManager) context.getSystemService(locCtx);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationmanager.getBestProvider(criteria, true);
locationmanager.requestLocationUpdates(provider, 0, 0, this);
} catch (Exception e) {
}
}
Hope this code can be useful for retrieving fast location updates.

Here is the code that I basically use to get a constant location signal using Google Play Services.
public class MyActivity
extends
Activity
implements
GooglePlayServicesClient.ConnectionCallbacks,
GooglePlayServicesClient.OnConnectionFailedListener,
LocationListener
{
private LocationClient locClient;
private LocationRequest locRequest;
// Flag that indicates if a request is underway.
private boolean servicesAvailable = false;
#Override
protected void onCreate( Bundle savedInstanceState )
{
// Check that Google Play services is available
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
// If Google Play services is available
if (ConnectionResult.SUCCESS == resultCode) {
servicesAvailable = true;
} else {
servicesAvailable = false;
}
if(locClient == null) {
locClient = new LocationClient(this, this, this);
}
if(!locClient.isConnected() || !locClient.isConnecting())
{
locClient.connect();
}
// Create the LocationRequest object
locRequest = LocationRequest.create();
// Use high accuracy
locRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locRequest.setInterval(INTERVAL);
locRequest.setFastestInterval(INTERVAL);
}
#Override
public void onLocationChanged( Location location )
{
// DO SOMETHING WITH THE LOCATION
}
#Override
public void onConnectionFailed( ConnectionResult arg0 )
{
}
#Override
public void onConnected( Bundle arg0 )
{
// Request location updates using static settings
locClient.requestLocationUpdates(locRequest, this);
}
#Override
public void onDisconnected()
{
if(servicesAvailable && locClient != null) {
//
// It looks like after a time out of like 90 minutes the activity
// gets destroyed and in this case the locClient is disconnected and
// calling removeLocationUpdates() throws an exception in this case.
//
if (locClient.isConnected()) {
locClient.removeLocationUpdates(this);
}
locClient = null;
}
}
}
This is the crux of it anyway and I culled this from other sources so I can't really claim it but there it is.

My current location always returns null. How can I fix this?

I am trying to find my current location for an android project. When the application is loaded my current location is always null. I have set up the permissions in the manifest etc. When I find the current location I intend to use the coordinates to find distances to other locations on the map. My code snippet is below. Why do I always get a null value?
locMan = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria crit = new Criteria();
towers = locMan.getBestProvider(crit, false);
location = locMan.getLastKnownLocation(towers);
if (location != null) {
System.out.println("Location is not null!");
lat = (int) (location.getLatitude() *1E6);
longi = (int) (location.getLongitude() * 1E6);
GeoPoint ourLocation = new GeoPoint(lati, longi);
OverlayItem overlayItem = new OverlayItem(ourLocation, "1st String",
"2nd String");
CustomPinpoint custom = new CustomPinpoint(d, MainMap.this);
custom.insertPinpoint(overlayItem);
overlayList.add(custom);
overlayList.clear();
} else {
System.out.println("Location is null! " + towers);
Toast.makeText(MainMap.this, "Couldn't get provider",Toast.LENGTH_SHORT)
.show();
}

getLastKnownLocation() uses the location(s) previously found by other applications. if no application has done this, then getLastKnownLocation() will return null.
One thing you can do to your code to have a better chance at getting as last known location- iterate over all of the enabled providers, not just the best provider. For example,
private Location getLastKnownLocation() {
List<String> providers = mLocationManager.getProviders(true);
Location bestLocation = null;
for (String provider : providers) {
Location l = mLocationManager.getLastKnownLocation(provider);
ALog.d("last known location, provider: %s, location: %s", provider,
l);
if (l == null) {
continue;
}
if (bestLocation == null
|| l.getAccuracy() < bestLocation.getAccuracy()) {
ALog.d("found best last known location: %s", l);
bestLocation = l;
}
}
if (bestLocation == null) {
return null;
}
return bestLocation;
}
If your app can't deal without having a location, and if there's no last known location, you will need to listen for location updates. You can take a look at this class for an example,
https://github.com/farble1670/autobright/blob/master/src/org/jtb/autobright/EventService.java
See the method onStartCommand(), where it checks if the network provider is enabled. If not, it uses last known location. If it is enabled, it registers to receive location updates.

if u find current location of devices the use following method in main class
public void find_Location(Context con) {
Log.d("Find Location", "in find_location");
this.con = con;
String location_context = Context.LOCATION_SERVICE;
locationManager = (LocationManager) con.getSystemService(location_context);
List<String> providers = locationManager.getProviders(true);
for (String provider : providers) {
locationManager.requestLocationUpdates(provider, 1000, 0,
new LocationListener() {
public void onLocationChanged(Location location) {}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status,
Bundle extras) {}
});
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
addr = ConvertPointToLocation(latitude, longitude);
String temp_c = SendToUrl(addr);
}
}
}
And Add User Permission method in your manifest file
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

Try this this will not give you null current location
class GetLastLocation extends TimerTask {
LocationManager mlocManager = (LocationManager)
getSystemService(Context.LOCATION_SERVICE);
LocationListener mlocListenerTmp = new CustomLocationListener();
private final Handler mLocHandler;
public GetLastLocation(Handler mLocHandler) {
this.mLocHandler = mLocHandler;
}
#Override
public void run() {
timer.cancel();
mlocManager.removeUpdates(mlocListenerTmp);
Location location = mlocManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
{
if (mlocListenerTmp != null) {
mlocManager.removeUpdates(mlocListenerTmp);
}
currentLocation = location;
}
if (location != null) {
String message = String.format(
"Location \n Longitude: %1$s \n Latitude: %2$s",
location.getLongitude(), location.getLatitude());
Log.d("loc", " :" + message);
Bundle b = new Bundle();
{
b.putBoolean("locationRetrieved", true);
{
Message msg = Message.obtain();
{
msg.setData(b);
mLocHandler.sendMessage(msg);
}
}
}
} else {
Log.d(
"loc",
":No GPS or network signal please fill the location manually!");
location = mlocManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
currentLocation = location;
Bundle b = new Bundle();
{
b.putBoolean("locationRetrieved", true);
{
Message msg = Message.obtain();
{
msg.setData(b);
mLocHandler.sendMessage(msg);
}
}
}
} else {
Bundle b = new Bundle();
{
b.putBoolean("locationRetrieved", false);
{
Message msg = Message.obtain();
{
msg.setData(b);
mLocHandler.sendMessage(msg);
}
}
}
}
}
}
}
call it like this
timer.schedule(new GetLastLocation(mLocHandler), 3000);
and the customLocationclass is as follows
public class CustomLocationListener implements LocationListener {
#Override
public void onLocationChanged(Location loc) {
loc.getLatitude();
loc.getLongitude();
currentLocation = loc;
String Text = "My current location is: " + "Latitud = "
+ loc.getLatitude() + "Longitud = " + loc.getLongitude();
Log.d("loc", "onLocationChanged" + Text);
}
#Override
public void onProviderDisabled(String provider) {}
#Override
public void onProviderEnabled(String provider) {}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
}

If you are trying it out in a marshmallow device, try enabling location permission for your app manually.

turn on your GPS by using below method. it helps you to show your current location without any ERROR. call it in onCreate
public void displayLocationSettingsRequest(Context context, int requestCode) {
GoogleApiClient googleApiClient = new GoogleApiClient.Builder(context)
.addApi(LocationServices.API).build();
googleApiClient.connect();
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(10000);
locationRequest.setFastestInterval(10000 / 2);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(locationRequest);
builder.setAlwaysShow(true);
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(result1 -> {
final Status status = result1.getStatus();
if (status.getStatusCode() == LocationSettingsStatusCodes.RESOLUTION_REQUIRED)
try {
status.startResolutionForResult((Activity) context, requestCode);
} catch (IntentSender.SendIntentException ignored) {
}
});

If you are getting a null error with your provider list, change...
List<String> providers = mLocationManager.getProviders(true);
to...
List<String> providers = locationManager.getAllProviders();
This worked for me, and make sure that you have the following in your AndroidManifest.xml file...
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

Have you tried reversing the code? For example, if(location==null) then print that location is null, and else print location is not null. I got that problem once before and that seemed to have fixed it (i don't know why). Try that.
If that doesn't work, perhaps the google maps API is returning the null value, in which case its a problem with the GM-API or with the call method. Any of these could be the problem.

What is the simplest and most robust way to get the user's current location on Android?

The LocationManager API on Android seems like it's a bit of a pain to use for an application that only needs an occasional and rough approximation of the user's location.
The app I'm working on isn't really a location app per se, but it does need to get the user's location in order to display a list of nearby businesses. It doesn't need to worry about if the user is moving around or anything like that.
Here's what I'd like to do:
Show the user a list of nearby locations.
Preload the user's location so that by the time I need it in Activity X, it will be available.
I don't particularly care about accuracy or frequency of update. Just grabbing one location is sufficient as long as it's not way off. Maybe if I want to be fancy I'll update the location once every few mins or so, but it's not a huge priority.
Work for any device as long as it has either a GPS or a Network Location provider.
It seems like it shouldn't be that hard, but it appears to me that I have to spin up two different location providers (GPS and NETWORK) and manage each's lifecycle. Not only that, but I have to duplicate the same code in multiple activities to satisfy #2. I've tried using getBestProvider() in the past to cut the solution down to just using one location provider, but that seems to only give you the best "theoretical" provider rather than the provider that's actually going to give you the best results.
Is there a simpler way to accomplish this?

Here's what I do:
First of all I check what providers are enabled. Some may be disabled on the device, some may be disabled in application manifest.
If any provider is available I start location listeners and timeout timer. It's 20 seconds in my example, may not be enough for GPS so you can enlarge it.
If I get update from location listener I use the provided value. I stop listeners and timer.
If I don't get any updates and timer elapses I have to use last known values.
I grab last known values from available providers and choose the most recent of them.
Here's how I use my class:
LocationResult locationResult = new LocationResult(){
#Override
public void gotLocation(Location location){
//Got the location!
}
};
MyLocation myLocation = new MyLocation();
myLocation.getLocation(this, locationResult);
And here's MyLocation class:
import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled=false;
boolean network_enabled=false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(lm==null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
timer1.schedule(new GetLastLocation(), 20000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
#Override
public void run() {
lm.removeUpdates(locationListenerGps);
lm.removeUpdates(locationListenerNetwork);
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
}
Somebody may also want to modify my logic. For example if you get update from Network provider don't stop listeners but continue waiting. GPS gives more accurate data so it's worth waiting for it. If timer elapses and you've got update from Network but not from GPS then you can use value provided from Network.
One more approach is to use LocationClient http://developer.android.com/training/location/retrieve-current.html. But it requires Google Play Services apk to be installed on user device.

After searching for best implementation how to get best precise user location I managed to combine all the best methods and come up with following class:
/**
* Retrieve accurate location from GPS or network services.
*
*
* Class usage example:
*
* public void onCreate(Bundle savedInstanceState) {
* ...
* my_location = new MyLocation();
* my_location.init(main.this, locationResult);
* }
*
*
* public LocationResult locationResult = new LocationResult(){
* #Override
* public void gotLocation(final Location location){
* // do something
* location.getLongitude();
* location.getLatitude();
* }
* };
*/
class MyLocation{
/**
* If GPS is enabled.
* Use minimal connected satellites count.
*/
private static final int min_gps_sat_count = 5;
/**
* Iteration step time.
*/
private static final int iteration_timeout_step = 500;
LocationResult locationResult;
private Location bestLocation = null;
private Handler handler = new Handler();
private LocationManager myLocationManager;
public Context context;
private boolean gps_enabled = false;
private int counts = 0;
private int sat_count = 0;
private Runnable showTime = new Runnable() {
public void run() {
boolean stop = false;
counts++;
System.println("counts=" + counts);
//if timeout (1 min) exceeded, stop tying
if(counts > 120){
stop = true;
}
//update last best location
bestLocation = getLocation(context);
//if location is not ready or don`t exists, try again
if(bestLocation == null && gps_enabled){
System.println("BestLocation not ready, continue to wait");
handler.postDelayed(this, iteration_timeout_step);
}else{
//if best location is known, calculate if we need to continue to look for better location
//if gps is enabled and min satellites count has not been connected or min check count is smaller then 4 (2 sec)
if(stop == false && !needToStop()){
System.println("Connected " + sat_count + " sattelites. continue waiting..");
handler.postDelayed(this, iteration_timeout_step);
}else{
System.println("#########################################");
System.println("BestLocation found return result to main. sat_count=" + sat_count);
System.println("#########################################");
// removing all updates and listeners
myLocationManager.removeUpdates(gpsLocationListener);
myLocationManager.removeUpdates(networkLocationListener);
myLocationManager.removeGpsStatusListener(gpsStatusListener);
sat_count = 0;
// send best location to locationResult
locationResult.gotLocation(bestLocation);
}
}
}
};
/**
* Determine if continue to try to find best location
*/
private Boolean needToStop(){
if(!gps_enabled){
return true;
}
else if(counts <= 4){
return false;
}
if(sat_count < min_gps_sat_count){
//if 20-25 sec and 3 satellites found then stop
if(counts >= 40 && sat_count >= 3){
return true;
}
return false;
}
}
return true;
}
/**
* Best location abstract result class
*/
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
/**
* Initialize starting values and starting best location listeners
*
* #param Context ctx
* #param LocationResult result
*/
public void init(Context ctx, LocationResult result){
context = ctx;
locationResult = result;
myLocationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
gps_enabled = (Boolean) myLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
bestLocation = null;
counts = 0;
// turning on location updates
myLocationManager.requestLocationUpdates("network", 0, 0, networkLocationListener);
myLocationManager.requestLocationUpdates("gps", 0, 0, gpsLocationListener);
myLocationManager.addGpsStatusListener(gpsStatusListener);
// starting best location finder loop
handler.postDelayed(showTime, iteration_timeout_step);
}
/**
* GpsStatus listener. OnChainged counts connected satellites count.
*/
public final GpsStatus.Listener gpsStatusListener = new GpsStatus.Listener() {
public void onGpsStatusChanged(int event) {
if(event == GpsStatus.GPS_EVENT_SATELLITE_STATUS){
try {
// Check number of satellites in list to determine fix state
GpsStatus status = myLocationManager.getGpsStatus(null);
Iterable<GpsSatellite>satellites = status.getSatellites();
sat_count = 0;
Iterator<GpsSatellite>satI = satellites.iterator();
while(satI.hasNext()) {
GpsSatellite satellite = satI.next();
System.println("Satellite: snr=" + satellite.getSnr() + ", elevation=" + satellite.getElevation());
sat_count++;
}
} catch (Exception e) {
e.printStackTrace();
sat_count = min_gps_sat_count + 1;
}
System.println("#### sat_count = " + sat_count);
}
}
};
/**
* Gps location listener.
*/
public final LocationListener gpsLocationListener = new LocationListener(){
#Override
public void onLocationChanged(Location location){
}
public void onProviderDisabled(String provider){}
public void onProviderEnabled(String provider){}
public void onStatusChanged(String provider, int status, Bundle extras){}
};
/**
* Network location listener.
*/
public final LocationListener networkLocationListener = new LocationListener(){
#Override
public void onLocationChanged(Location location){
}
public void onProviderDisabled(String provider){}
public void onProviderEnabled(String provider){}
public void onStatusChanged(String provider, int status, Bundle extras){}
};
/**
* Returns best location using LocationManager.getBestProvider()
*
* #param context
* #return Location|null
*/
public static Location getLocation(Context context){
System.println("getLocation()");
// fetch last known location and update it
try {
LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
String strLocationProvider = lm.getBestProvider(criteria, true);
System.println("strLocationProvider=" + strLocationProvider);
Location location = lm.getLastKnownLocation(strLocationProvider);
if(location != null){
return location;
}
return null;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
This class tries to connect to min_gps_sat_count satellites if GPS is enabled. Else returns LocationManager.getBestProvider() location. Check the code!

With Fedor's solution I've experienced multiple execution of the callback gotLocation.
It seems to be due to a race condition in the overridden LocationListener.onLocationChanged method, when gotLocation method is 'long enough'. I'm not sure, but I guess removeUpdates prevents the enqueueing of new messages in the Looper queue, but it doesn't remove those already enqueued but not yet consumed. Hence the race condition.
To reduce the probability of this wrong behavior it's possible to call removeUpdates before firing the onLocationChanged event, but still we have the race condition.
The best solution I found is to replace requestLocationUpdates with requestSingleUpdate.
This is my version, based on Fedor's solution, using an Handler to send a message to the looper thread:
public class LocationResolver {
private Timer timer;
private LocationManager locationManager;
private LocationResult locationResult;
private boolean gpsEnabled = false;
private boolean networkEnabled = false;
private Handler locationTimeoutHandler;
private final Callback locationTimeoutCallback = new Callback() {
public boolean handleMessage(Message msg) {
locationTimeoutFunc();
return true;
}
private void locationTimeoutFunc() {
locationManager.removeUpdates(locationListenerGps);
locationManager.removeUpdates(locationListenerNetwork);
Location networkLocation = null, gpsLocation = null;
if (gpsEnabled)
gpsLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (networkEnabled)
networkLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
// if there are both values use the latest one
if (gpsLocation != null && networkLocation != null) {
if (gpsLocation.getTime() > networkLocation.getTime())
locationResult.gotLocation(gpsLocation);
else
locationResult.gotLocation(networkLocation);
return;
}
if (gpsLocation != null) {
locationResult.gotLocation(gpsLocation);
return;
}
if (networkLocation != null) {
locationResult.gotLocation(networkLocation);
return;
}
locationResult.gotLocation(null);
}
};
private final LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer.cancel();
locationResult.gotLocation(location);
locationManager.removeUpdates(this);
locationManager.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
private final LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer.cancel();
locationResult.gotLocation(location);
locationManager.removeUpdates(this);
locationManager.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
public void prepare() {
locationTimeoutHandler = new Handler(locationTimeoutCallback);
}
public synchronized boolean getLocation(Context context, LocationResult result, int maxMillisToWait) {
locationResult = result;
if (locationManager == null)
locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
// exceptions will be thrown if provider is not permitted.
try {
gpsEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception ex) {
}
try {
networkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
}
// don't start listeners if no provider is enabled
if (!gpsEnabled && !networkEnabled)
return false;
if (gpsEnabled)
locationManager.requestSingleUpdate(LocationManager.GPS_PROVIDER, locationListenerGps, Looper.myLooper());
//locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if (networkEnabled)
locationManager.requestSingleUpdate(LocationManager.NETWORK_PROVIDER, locationListenerNetwork, Looper.myLooper());
//locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer = new Timer();
timer.schedule(new GetLastLocationTask(), maxMillisToWait);
return true;
}
private class GetLastLocationTask extends TimerTask {
#Override
public void run() {
locationTimeoutHandler.sendEmptyMessage(0);
}
}
public static abstract class LocationResult {
public abstract void gotLocation(Location location);
}
}
I use this class from a customized looper thread, like the following one:
public class LocationGetter {
private final Context context;
private Location location = null;
private final Object gotLocationLock = new Object();
private final LocationResult locationResult = new LocationResult() {
#Override
public void gotLocation(Location location) {
synchronized (gotLocationLock) {
LocationGetter.this.location = location;
gotLocationLock.notifyAll();
Looper.myLooper().quit();
}
}
};
public LocationGetter(Context context) {
if (context == null)
throw new IllegalArgumentException("context == null");
this.context = context;
}
public synchronized Coordinates getLocation(int maxWaitingTime, int updateTimeout) {
try {
final int updateTimeoutPar = updateTimeout;
synchronized (gotLocationLock) {
new Thread() {
public void run() {
Looper.prepare();
LocationResolver locationResolver = new LocationResolver();
locationResolver.prepare();
locationResolver.getLocation(context, locationResult, updateTimeoutPar);
Looper.loop();
}
}.start();
gotLocationLock.wait(maxWaitingTime);
}
} catch (InterruptedException e1) {
e1.printStackTrace();
}
if (location != null)
coordinates = new Coordinates(location.getLatitude(), location.getLongitude());
else
coordinates = Coordinates.UNDEFINED;
return coordinates;
}
}
where Coordinates is a simple class with two properties: latitude and longitude.

I have created small application with step by step description to gets current locations GPS co-ordinates.
Complete example source code in below URL:
Get Current Location coordinates , City name - in Android
See How it works :
All we need to do is add this permission in manifest file
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION">
</uses-permission>
and create LocationManager instance like this
LocationManager locationManager = (LocationManager)
getSystemService(Context.LOCATION_SERVICE);
Check GPS is enabled or not
then implement LocationListener and Get Coordinates
LocationListener locationListener = new MyLocationListener();
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 5000, 10, locationListener);
here is the sample code to do
/*----------Listener class to get coordinates ------------- */
private class MyLocationListener implements LocationListener {
#Override
public void onLocationChanged(Location loc) {
editLocation.setText("");
pb.setVisibility(View.INVISIBLE);
Toast.makeText(
getBaseContext(),
"Location changed: Lat: " + loc.getLatitude() + " Lng: "
+ loc.getLongitude(), Toast.LENGTH_SHORT).show();
String longitude = "Longitude: " + loc.getLongitude();
Log.v(TAG, longitude);
String latitude = "Latitude: " + loc.getLatitude();
Log.v(TAG, latitude);
/*-------to get City-Name from coordinates -------- */
String cityName = null;
Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
List<Address> addresses;
try {
addresses = gcd.getFromLocation(loc.getLatitude(),
loc.getLongitude(), 1);
if (addresses.size() > 0)
System.out.println(addresses.get(0).getLocality());
cityName = addresses.get(0).getLocality();
} catch (IOException e) {
e.printStackTrace();
}
String s = longitude + "\n" + latitude + "\n\nMy Current City is: "
+ cityName;
editLocation.setText(s);
}
#Override
public void onProviderDisabled(String provider) {}
#Override
public void onProviderEnabled(String provider) {}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
}

You could always just use LocationManager.getLastKnownLocation() but like it says it could be out of date.
And a simple way to get a general location could be registering for the network (usually pretty fast).
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 1000, 1000, this);
and then doing
locationManager.removeUpdates(this);
in the onLocationChanged() method of the listener.

I have written detailed tutorial covering current location here on demonuts.com.You can find more description here and also you can download whole demo source code for better understanding.
There are already many answers there but I want to show latest way to get location using Google API, so new programmers can use new method:
First of all, put this in gradle file
compile 'com.google.android.gms:play-services:8.4.0'
then implement necessary interfaces
public class MainActivity extends BaseActivitiy implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener
declare instances
private GoogleApiClient mGoogleApiClient;
private Location mLocation;
private LocationManager locationManager;
private LocationRequest mLocationRequest;
put this in onCreate()
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
At last, override necessary methods
#Override
public void onConnected(Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
mLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if(mLocation == null){
startLocationUpdates();
}
if (mLocation != null) {
double latitude = mLocation.getLatitude();
double longitude = mLocation.getLongitude();
} else {
// Toast.makeText(this, "Location not Detected", Toast.LENGTH_SHORT).show();
}
}
protected void startLocationUpdates() {
// Create the location request
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(UPDATE_INTERVAL)
.setFastestInterval(FASTEST_INTERVAL);
// Request location updates
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,
mLocationRequest, this);
Log.d("reque", "--->>>>");
}
#Override
public void onConnectionSuspended(int i) {
Log.i(TAG, "Connection Suspended");
mGoogleApiClient.connect();
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i(TAG, "Connection failed. Error: " + connectionResult.getErrorCode());
}
#Override
public void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
#Override
public void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
#Override
public void onLocationChanged(Location location) {
}
Don't forget to start GPS in your device before running app.

Actualy we can use the two providers(GPS & NETWORK). And they just share a public listener:
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10 * 1000, (float) 10.0, listener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 90 * 1000, (float) 10.0, listener);
This is necessary because the OnLocationChanged() method always need to be called in time.

I am not sure if the Location-Based Services can get the location from other infrastructures other than GPS, but according to that article, it does seem possible:
Applications can call on any of
several types of positioning methods.
Using the mobile phone network: The
current cell ID can be used to
identify the Base Transceiver Station
(BTS) that the device is communicating
with and the location of that BTS.
Clearly, the accuracy of this method
depends on the size of the cell, and
can be quite inaccurate. A GSM cell
may be anywhere from 2 to 20
kilometers in diameter. Other
techniques used along with cell ID can
achieve accuracy within 150 meters.
Using satellites: The Global
Positioning System (GPS), controlled
by the US Department of Defense, uses
a constellation of 24 satellites
orbiting the earth. GPS determines the
device's position by calculating
differences in the times signals from
different satellites take to reach the
receiver. GPS signals are encoded, so
the mobile device must be equipped
with a GPS receiver. GPS is
potentially the most accurate method
(between 4 and 40 meters if the GPS
receiver has a clear view of the sky),
but it has some drawbacks: The extra
hardware can be costly, consumes
battery while in use, and requires
some warm-up after a cold start to get
an initial fix on visible satellites.
It also suffers from "canyon effects"
in cities, where satellite visibility
is intermittent.
Using short-range
positioning beacons: In relatively
small areas, such as a single
building, a local area network can
provide locations along with other
services. For example, appropriately
equipped devices can use Bluetooth for
short-range positioning.

Use the below code, it will give the best provider available:
String locCtx = Context.LOCATION_SERVICE;
LocationManager locationMgr = (LocationManager) ctx.getSystemService(locCtx);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationMgr.getBestProvider(criteria, true);
System.out.println("Best Available provider::::"+provider);

The recommended way to do this is to use LocationClient:
First, define location update interval values. Adjust this to your needs.
private static final int MILLISECONDS_PER_SECOND = 1000;
private static final long UPDATE_INTERVAL = MILLISECONDS_PER_SECOND * UPDATE_INTERVAL_IN_SECONDS;
private static final int FASTEST_INTERVAL_IN_SECONDS = 1;
private static final long FASTEST_INTERVAL = MILLISECONDS_PER_SECOND * FASTEST_INTERVAL_IN_SECONDS;
Have your Activity implement GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener, and LocationListener.
public class LocationActivity extends Activity implements
GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener, LocationListener {}
Then, set up a LocationClientin the onCreate() method of your Activity:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLocationClient = new LocationClient(this, this, this);
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(UPDATE_INTERVAL);
mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
}
Add the required methods to your Activity; onConnected() is the method that is called when the LocationClientconnects. onLocationChanged() is where you'll retrieve the most up-to-date location.
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.w(TAG, "Location client connection failed");
}
#Override
public void onConnected(Bundle dataBundle) {
Log.d(TAG, "Location client connected");
mLocationClient.requestLocationUpdates(mLocationRequest, this);
}
#Override
public void onDisconnected() {
Log.d(TAG, "Location client disconnected");
}
#Override
public void onLocationChanged(Location location) {
if (location != null) {
Log.d(TAG, "Updated Location: " + Double.toString(location.getLatitude()) + "," + Double.toString(location.getLongitude()));
} else {
Log.d(TAG, "Updated location NULL");
}
}
Be sure to connect/disconnect the LocationClient so it's only using extra battery when absolutely necessary and so the GPS doesn't run indefinitely. The LocationClient must be connected in order to get data from it.
public void onResume() {
super.onResume();
mLocationClient.connect();
}
public void onStop() {
if (mLocationClient.isConnected()) {
mLocationClient.removeLocationUpdates(this);
}
mLocationClient.disconnect();
super.onStop();
}
Get the user's location. First try using the LocationClient; if that fails, fall back to the LocationManager.
public Location getLocation() {
if (mLocationClient != null && mLocationClient.isConnected()) {
return mLocationClient.getLastLocation();
} else {
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
if (locationManager != null) {
Location lastKnownLocationGPS = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (lastKnownLocationGPS != null) {
return lastKnownLocationGPS;
} else {
return locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
} else {
return null;
}
}
}

Even though the answer is already given here. I just wanted to share this to the world incase the come across such scenario.
My requirement was that i needed to get a user's current location within 30 to 35 seconds at max so here is the solution i made following Nirav Ranpara's Answer.
1. I made MyLocationManager.java class which handles all the GPS and Network stuff
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import com.app.callbacks.OnLocationDetectectionListener;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.widget.Toast;
public class MyLocationManager {
/** The minimum distance to GPS change Updates in meters **/
private final long MIN_DISTANCE_CHANGE_FOR_UPDATES_FOR_GPS = 2; // 2
// meters
/** The minimum time between GPS updates in milliseconds **/
private final long MIN_TIME_BW_UPDATES_OF_GPS = 1000 * 5 * 1; // 5
// seconds
/** The minimum distance to NETWORK change Updates in meters **/
private final long MIN_DISTANCE_CHANGE_FOR_UPDATES_FOR_NETWORK = 5; // 5
// meters
/** The minimum time between NETWORK updates in milliseconds **/
private final long MIN_TIME_BW_UPDATES_OF_NETWORK = 1000 * 10 * 1; // 10
// seconds
/**
* Lets just say i don't trust the first location that the is found. This is
* to avoid that
**/
private int NetworkLocationCount = 0, GPSLocationCount = 0;
private boolean isGPSEnabled;
private boolean isNetworkEnabled;
/**
* Don't do anything if location is being updated by Network or by GPS
*/
private boolean isLocationManagerBusy;
private LocationManager locationManager;
private Location currentLocation;
private Context mContext;
private OnLocationDetectectionListener mListener;
public MyLocationManager(Context mContext,
OnLocationDetectectionListener mListener) {
this.mContext = mContext;
this.mListener = mListener;
}
/**
* Start the location manager to find my location
*/
public void startLocating() {
try {
locationManager = (LocationManager) mContext
.getSystemService(Context.LOCATION_SERVICE);
// Getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// Getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// No network provider is enabled
showSettingsAlertDialog();
} else {
// If GPS enabled, get latitude/longitude using GPS Services
if (isGPSEnabled) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES_OF_GPS,
MIN_DISTANCE_CHANGE_FOR_UPDATES_FOR_GPS,
gpsLocationListener);
}
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES_OF_NETWORK,
MIN_DISTANCE_CHANGE_FOR_UPDATES_FOR_NETWORK,
networkLocationListener);
}
}
/**
* My 30 seconds plan to get myself a location
*/
ScheduledExecutorService se = Executors
.newSingleThreadScheduledExecutor();
se.schedule(new Runnable() {
#Override
public void run() {
if (currentLocation == null) {
if (isGPSEnabled) {
currentLocation = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
} else if (isNetworkEnabled) {
currentLocation = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
if (currentLocation != null && mListener != null) {
locationManager.removeUpdates(gpsLocationListener);
locationManager
.removeUpdates(networkLocationListener);
mListener.onLocationDetected(currentLocation);
}
}
}
}, 30, TimeUnit.SECONDS);
} catch (Exception e) {
Log.e("Error Fetching Location", e.getMessage());
Toast.makeText(mContext,
"Error Fetching Location" + e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
/**
* Handle GPS location listener callbacks
*/
private LocationListener gpsLocationListener = new LocationListener() {
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onLocationChanged(Location location) {
if (GPSLocationCount != 0 && !isLocationManagerBusy) {
Log.d("GPS Enabled", "GPS Enabled");
isLocationManagerBusy = true;
currentLocation = location;
locationManager.removeUpdates(gpsLocationListener);
locationManager.removeUpdates(networkLocationListener);
isLocationManagerBusy = false;
if (currentLocation != null && mListener != null) {
mListener.onLocationDetected(currentLocation);
}
}
GPSLocationCount++;
}
};
/**
* Handle Network location listener callbacks
*/
private LocationListener networkLocationListener = new LocationListener() {
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onLocationChanged(Location location) {
if (NetworkLocationCount != 0 && !isLocationManagerBusy) {
Log.d("Network", "Network");
isLocationManagerBusy = true;
currentLocation = location;
locationManager.removeUpdates(gpsLocationListener);
locationManager.removeUpdates(networkLocationListener);
isLocationManagerBusy = false;
if (currentLocation != null && mListener != null) {
mListener.onLocationDetected(currentLocation);
}
}
NetworkLocationCount++;
}
};
/**
* Function to show settings alert dialog. On pressing the Settings button
* it will launch Settings Options.
* */
public void showSettingsAlertDialog() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
alertDialog.setTitle("GPS is settings");
// Setting Dialog Message
alertDialog
.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// On pressing the Settings button.
alertDialog.setPositiveButton("Settings",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
// On pressing the cancel button
alertDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
}
2. I made an Interface (callback) OnLocationDetectectionListener.java in order to communicate the results back to the calling fragment or activity
import android.location.Location;
public interface OnLocationDetectectionListener {
public void onLocationDetected(Location mLocation);
}
3. Then i made an MainAppActivty.java Activity that implements OnLocationDetectectionListener interface and here is how i receive my location in it
public class MainAppActivty extends Activity implements
OnLocationDetectectionListener {
private Location currentLocation;
private MyLocationManager mLocationManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.activity_home);
super.onCreate(savedInstanceState);
mLocationManager = new MyLocationManager(this, this);
mLocationManager.startLocating();
}
#Override
public void onLocationDetected(Location mLocation) {
//Your new Location is received here
currentLocation = mLocation;
}
4. Add the following permissions to your manifest file
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Hope this is helpful to others :)

Improvements to #Fedor's solution.
Rather than requesting location with '0' time interval and '0' distance, we can use the location manager's requestSingleUpdate method. Updated code(kotlin version)
import android.annotation.SuppressLint
import android.content.Context
import android.location.Criteria
import android.location.Location
import android.location.LocationListener
import android.location.LocationManager
import android.os.Bundle
import java.util.*
#SuppressLint("MissingPermission")
class AppLocationProvider {
private lateinit var timer: Timer
private var locationManager: LocationManager? = null
private lateinit var locationCallBack: LocationCallBack
private var gpsEnabled = false
private var networkEnabled = false
private var locationListener: LocationListener = object : LocationListener {
override fun onLocationChanged(location: Location) {
timer.cancel()
locationCallBack.locationResult(location)
}
override fun onProviderDisabled(provider: String) {}
override fun onProviderEnabled(provider: String) {}
override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {}
}
fun getLocation(context : Context, callBack: LocationCallBack): Boolean {
locationCallBack = callBack
if (locationManager == null)
locationManager = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager?
//exceptions will be thrown if provider is not permitted.
try {
gpsEnabled = locationManager!!.isProviderEnabled(LocationManager.GPS_PROVIDER)
} catch (ex: Exception) {
ex.printStackTrace()
}
try {
networkEnabled = locationManager!!.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
} catch (ex: Exception) {
ex.printStackTrace()
}
//don't start listeners if no provider is enabled
if (!gpsEnabled && !networkEnabled)
return false
val criteria = Criteria()
if (gpsEnabled) {
criteria.accuracy = Criteria.ACCURACY_FINE
} else {
criteria.accuracy = Criteria.ACCURACY_COARSE
}
locationManager!!.requestSingleUpdate(criteria, locationListener, null)
timer = Timer()
timer.schedule(GetLastKnownLocation(), 5000)
return true
}
inner class GetLastKnownLocation : TimerTask() {
override fun run() {
locationManager!!.removeUpdates(locationListener)
var netLoc: Location? = null
var gpsLoc: Location? = null
if (gpsEnabled)
gpsLoc = locationManager!!.getLastKnownLocation(LocationManager.GPS_PROVIDER)
if (networkEnabled)
netLoc = locationManager!!.getLastKnownLocation(LocationManager.NETWORK_PROVIDER)
//check which value use the latest one
if (gpsLoc != null && netLoc != null) {
if (gpsLoc.time > netLoc.time)
locationCallBack.locationResult(gpsLoc)
else
locationCallBack.locationResult(netLoc)
return
}
if (gpsLoc != null) {
locationCallBack.locationResult(gpsLoc)
return
}
if (netLoc != null) {
locationCallBack.locationResult(netLoc)
return
}
locationCallBack.locationResult(null)
}
}
interface LocationCallBack {
fun locationResult(location: Location?)
}
}
To get location need to just call getLocation method as -
AppLocationProvider().getLocation(context, object : AppLocationProvider.LocationCallBack {
override fun locationResult(location: Location?) {
// use location, this might get called in a different thread if a location is a last known location. In that case, you can post location on main thread
}
})
Note:
Before calling getLocation method, required location permission must be granted.

public static Location getBestLocation(Context ctxt) {
Location gpslocation = getLocationByProvider(
LocationManager.GPS_PROVIDER, ctxt);
Location networkLocation = getLocationByProvider(
LocationManager.NETWORK_PROVIDER, ctxt);
Location fetchedlocation = null;
// if we have only one location available, the choice is easy
if (gpslocation != null) {
Log.i("New Location Receiver", "GPS Location available.");
fetchedlocation = gpslocation;
} else {
Log.i("New Location Receiver",
"No GPS Location available. Fetching Network location lat="
+ networkLocation.getLatitude() + " lon ="
+ networkLocation.getLongitude());
fetchedlocation = networkLocation;
}
return fetchedlocation;
}
/**
* get the last known location from a specific provider (network/gps)
*/
private static Location getLocationByProvider(String provider, Context ctxt) {
Location location = null;
// if (!isProviderSupported(provider)) {
// return null;
// }
LocationManager locationManager = (LocationManager) ctxt
.getSystemService(Context.LOCATION_SERVICE);
try {
if (locationManager.isProviderEnabled(provider)) {
location = locationManager.getLastKnownLocation(provider);
}
} catch (IllegalArgumentException e) {
Log.i("New Location Receiver", "Cannot access Provider " + provider);
}
return location;
}

This is the way I am requesting User Permissions.
Outside your application tag in AndroidManifest.xml add these permission requests.
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Then add Google's Location dependencies in the App Gradle file.
implementation 'com.google.android.gms:play-services-location:15.0.0'
Now declare some Global variables.
private lateinit var mFusedLocationProvider:FusedLocationProviderClient
private lateinit var mLocationCallback: LocationCallback
private lateinit var mLocationRequest: LocationRequest
private var mLocationPermissionGranted:Boolean = false
In OnCreate method of your Activity (I was not able to Format the Code Properly, Apology for that)
mFusedLocationProvider = LocationServices.getFusedLocationProviderClient(this)
//Location Callback
mLocationCallback = object: LocationCallback(){
override fun onLocationResult(p0: LocationResult?) {
if(p0==null){
//todo(request user to enable location from settings then remove return)
return
}else{
getDeviceLocation()
}
}
}
//Location Request
mLocationRequest = LocationRequest.create()
mLocationRequest.priority = LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY
//Set the Interval for Latest Interval Update
mLocationRequest.interval = 5000
//Set How Many Location Updated you Want
mLocationRequest.numUpdates = 1
getLocationPermission()
getDeviceLocation()
Now create both the functions.
private fun getLocationPermission() {
val permission:Array<String> = arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION,android.Manifest.permission.ACCESS_COARSE_LOCATION)
if(ContextCompat.checkSelfPermission(applicationContext,Constant.FINE_LOCATION)== PermissionChecker.PERMISSION_GRANTED){
if(ContextCompat.checkSelfPermission(applicationContext,Constant.COARSE_LOCATION)== PermissionChecker.PERMISSION_GRANTED){
mLocationPermissionGranted = true
}
}else{
ActivityCompat.requestPermissions(this,permission,Constant.LOCATION_REQUEST_CODE)
}
}
Second Method
private fun getDeviceLocation() {
try{
if(mLocationPermissionGranted){
mFusedLocationProvider.lastLocation.addOnCompleteListener(this,{task: Task<Location> ->
if(task.isSuccessful){
var currentLocation: Location? = task.result
if(currentLocation!=null){
Log.i("Location","Latitude is ${currentLocation.latitude} and Longitude" +
"${currentLocation.longitude}")
}
else
mFusedLocationProvider.requestLocationUpdates(mLocationRequest,mLocationCallback,null)
}
})
}
}catch (e:SecurityException){
Log.e("Error", "Security Exception ${e.message}")
}
}
For Constant.kt
class Constant{
companion object {
//Location Request Settings
const val SET_INTERVAL:Long = 2000
const val NUM_UPDATES:Int = 1
//Location Permission
const val FINE_LOCATION:String = android.Manifest.permission.ACCESS_FINE_LOCATION
const val COARSE_LOCATION:String = android.Manifest.permission.ACCESS_COARSE_LOCATION
}
}

From last more than one year, I was using the combination of GPS_PROVIDER and NETWORK_PROVIDER to get the current location and it was working good, but from last few months I'm getting location after a long delay, so I switched to latest API FusedLocationProviderClient and it is working pretty good.
Here is the class which I wrote to get current location by using FusedLocationProviderClient.
In below code, I used a timer to wait for while to get the current location, I scheduled timer 15 seconds delay, you can change it according to you.
private static FusedLocationService ourInstance;
private final LocationRequest locationRequest;
private FusedLocationProviderClient mFusedLocationClient;
private Location mLastLocation;
private Context context;
private FindOutLocation findOutLocation;
private boolean callbackTriggered = false;
private Timer timer;
public static FusedLocationService getInstance(Context pContext) {
if (null == ourInstance) ourInstance = new FusedLocationService(pContext);
return ourInstance;
}
private FusedLocationService(Context pContext) {
context = pContext;
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(context);
locationRequest = getLocationRequest();
requestLocation(context);
}
public Location getLastKnownLocation() {
return mLastLocation;
}
private void requestLocation(Context context) {
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mFusedLocationClient.requestLocationUpdates(locationRequest, mLocationCallback, null);
mFusedLocationClient.getLastLocation().addOnSuccessListener(location -> {
if (location != null) {
mLastLocation = location;
triggerCallback(mLastLocation);
}
});
}
private LocationRequest getLocationRequest() {
LocationRequest locationRequest = new LocationRequest();
long INTERVAL = 10 * 1000;
long FASTEST_INTERVAL = 5 * 1000;
locationRequest.setInterval(INTERVAL);
locationRequest.setFastestInterval(FASTEST_INTERVAL);
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
return locationRequest;
}
private LocationCallback mLocationCallback = new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
for (Location location : locationResult.getLocations()) {
if (location != null) mLastLocation = location;
}
if (null != mLastLocation) triggerCallback(mLastLocation);
}
};
public static abstract class FindOutLocation {
public abstract void gotLocation(Location location);
}
#SuppressLint("MissingPermission")
public void findLocation(FindOutLocation findOutLocation) {
long TIMER_TIME_OUT = 15 * 1000;
this.findOutLocation = findOutLocation;
callbackTriggered = false;
try {
requestLocation(context);
timer = new Timer();
timer.schedule(new GetLastLocation(context), TIMER_TIME_OUT);
} catch (Exception e) {
e.printStackTrace();
}
}
private class GetLastLocation extends TimerTask {
Context context;
GetLastLocation(Context context) {
this.context = context;
}
#Override
public void run() {
triggerCallback(mLastLocation);
}
}
private void triggerCallback(Location location) {
if (null != location) mLastLocation = location;
if (!callbackTriggered && null != findOutLocation) {
callbackTriggered = true;
removeLocationUpdates();
findOutLocation.gotLocation(location);
findOutLocation = null;
}
}
private void removeLocationUpdates() {
if (null != timer) timer.cancel();
if (null != mFusedLocationClient)
mFusedLocationClient.removeLocationUpdates(mLocationCallback);
}
}
And called this from activity, here is the code
FusedLocationService.FindOutLocation findOutLocation = new FusedLocationService.FindOutLocation() {
#Override
public void gotLocation(Location currentLocation) {
if (currentLocation != null) {
/*TODO DO SOMETHING WITH CURRENT LOCATION*/
}
}
};
FusedLocationService.getInstance(this).findLocation(findOutLocation);
Add following entries in the AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- Needed only if your app targets Android 5.0 (API level 21) or higher. -->
<uses-feature android:name="android.hardware.location.gps" />

To get and show the user's current location, you could also use MyLocationOverlay. Suppose you have a mapView field in your activity. All you would need to do to show the user location is the following:
myLocationOverlay = new MyLocationOverlay(this, mapView);
myLocationOverlay.enableMyLocation();
mapView.getOverlays().add(myLocationOverlay);
This gets the current location from either the GPS or the network. If both fail, enableMyLocation() will return false.
As for the locations of things around the area, an ItemizedOverlay should do the trick.
I hope I haven't misunderstood your question. Good luck.

This is the code that provides user current location
create Maps Activty:
public class Maps extends MapActivity {
public static final String TAG = "MapActivity";
private MapView mapView;
private LocationManager locationManager;
Geocoder geocoder;
Location location;
LocationListener locationListener;
CountDownTimer locationtimer;
MapController mapController;
MapOverlay mapOverlay = new MapOverlay();
#Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
initComponents();
mapView.setBuiltInZoomControls(true);
mapView.setSatellite(true);
mapView.setTraffic(true);
mapView.setStreetView(true);
mapController = mapView.getController();
mapController.setZoom(16);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (locationManager == null) {
Toast.makeText(Maps.this, "Location Manager Not Available",
Toast.LENGTH_SHORT).show();
return;
}
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location == null)
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
double lat = location.getLatitude();
double lng = location.getLongitude();
Toast.makeText(Maps.this, "Location Are" + lat + ":" + lng,
Toast.LENGTH_SHORT).show();
GeoPoint point = new GeoPoint((int) (lat * 1E6), (int) (lng * 1E6));
mapController.animateTo(point, new Message());
mapOverlay.setPointToDraw(point);
List<Overlay> listOfOverlays = mapView.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverlay);
}
locationListener = new LocationListener() {
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {}
public void onProviderEnabled(String arg0) {}
public void onProviderDisabled(String arg0) {}
public void onLocationChanged(Location l) {
location = l;
locationManager.removeUpdates(this);
if (l.getLatitude() == 0 || l.getLongitude() == 0) {
} else {
double lat = l.getLatitude();
double lng = l.getLongitude();
Toast.makeText(Maps.this, "Location Are" + lat + ":" + lng,
Toast.LENGTH_SHORT).show();
}
}
};
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER))
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 1000, 10f, locationListener);
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 1000, 10f, locationListener);
locationtimer = new CountDownTimer(30000, 5000) {
#Override
public void onTick(long millisUntilFinished) {
if (location != null) locationtimer.cancel();
}
#Override
public void onFinish() {
if (location == null) {
}
}
};
locationtimer.start();
}
public MapView getMapView() {
return this.mapView;
}
private void initComponents() {
mapView = (MapView) findViewById(R.id.map_container);
ImageView ivhome = (ImageView) this.findViewById(R.id.imageView_home);
ivhome.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent(Maps.this, GridViewContainer.class);
startActivity(intent);
finish();
}
});
}
#Override
protected boolean isRouteDisplayed() {
return false;
}
class MapOverlay extends Overlay {
private GeoPoint pointToDraw;
public void setPointToDraw(GeoPoint point) {
pointToDraw = point;
}
public GeoPoint getPointToDraw() {
return pointToDraw;
}
#Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
long when) {
super.draw(canvas, mapView, shadow);
Point screenPts = new Point();
mapView.getProjection().toPixels(pointToDraw, screenPts);
Bitmap bmp = BitmapFactory.decodeResource(getResources(),
R.drawable.select_map);
canvas.drawBitmap(bmp, screenPts.x, screenPts.y - 24, null);
return true;
}
}
}
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black"
android:orientation="vertical" >
<com.google.android.maps.MapView
android:id="#+id/map_container"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="yor api key"
android:clickable="true"
android:focusable="true" />
</LinearLayout>
and define following permission in manifest:
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

EDIT: Updated with the latest Location Service API from Google Play Services library (July 2014)
I would recommend you to use the new Location Service API, available from the Google Play Services library, which provides a more powerful, high-level framework that automates tasks such as location provider choice and power management. According to the official documentation: "... Location API make it easy for you to build location-aware applications, without needing to focus on the details of the underlying location technology. They also let you minimize power consumption by using all of the capabilities of the device hardware."
For further information visit: Making Your App Location-Aware
To see a full example using the latest Location Service API visit: Android LocationClient class is deprecated but used in documentation

It requires lots of things in place to get location updates in android,
requires lots of bolierplate code.
You need to take care of
Google Play services availablity Check,
Update Google play Service if it is old or not available
Dialog Creation of GoogleApiClient and its callbacks connected,disconnected etc.
Stopping and releasing resources for location updates
Handling Location permission scenarios
Checking Location services are On or Off
Getting lastknown location is not so easy either
Fallback to last known location if not getting location after certain duration
I have created Android-EasyLocation (small android library) which will take care all this stuff and you can focus on business logic.
All you need is extend EasyLocationActivity and this
requestSingleLocationFix(easyLocationRequest);
or
requestLocationUpdates(easyLocationRequest);
Checkout sample app and steps needed here at https://github.com/akhgupta/Android-EasyLocation

Kotlin version of #Fedor Greate answer:
usage of class:
val locationResult = object : MyLocation.LocationResult() {
override fun gotLocation(location: Location?) {
val lat = location!!.latitude
val lon = location.longitude
Toast.makeText(context, "$lat --SLocRes-- $lon", Toast.LENGTH_SHORT).show()
}
}
val myLocation = MyLocation()
myLocation.getLocation(inflater.context, locationResult)
MyLocation Class :
class MyLocation {
internal lateinit var timer1: Timer
internal var lm: LocationManager? = null
internal lateinit var locationResult: LocationResult
internal var gps_enabled = false
internal var network_enabled = false
internal var locationListenerGps: LocationListener = object : LocationListener {
override fun onLocationChanged(location: Location) {
timer1.cancel()
locationResult.gotLocation(location)
lm!!.removeUpdates(this)
lm!!.removeUpdates(locationListenerNetwork)
}
override fun onProviderDisabled(provider: String) {}
override fun onProviderEnabled(provider: String) {}
override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {}
}
internal var locationListenerNetwork: LocationListener = object : LocationListener {
override fun onLocationChanged(location: Location) {
timer1.cancel()
locationResult.gotLocation(location)
lm!!.removeUpdates(this)
lm!!.removeUpdates(locationListenerGps)
}
override fun onProviderDisabled(provider: String) {}
override fun onProviderEnabled(provider: String) {}
override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {}
}
fun getLocation(context: Context, result: LocationResult): Boolean {
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult = result
if (lm == null)
lm = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager?
//exceptions will be thrown if provider is not permitted.
try {
gps_enabled = lm!!.isProviderEnabled(LocationManager.GPS_PROVIDER)
} catch (ex: Exception) {
}
try {
network_enabled = lm!!.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
} catch (ex: Exception) {
}
//don't start listeners if no provider is enabled
if (!gps_enabled && !network_enabled)
return false
if (ActivityCompat.checkSelfPermission(context,
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED ||
ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) run {
ActivityCompat.requestPermissions(context as Activity,
arrayOf(Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION), 111)
}
if (gps_enabled)
lm!!.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0f, locationListenerGps)
if (network_enabled)
lm!!.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0f, locationListenerNetwork)
timer1 = Timer()
timer1.schedule(GetLastLocation(context), 20000)
return true
}
internal inner class GetLastLocation(var context: Context) : TimerTask() {
override fun run() {
lm!!.removeUpdates(locationListenerGps)
lm!!.removeUpdates(locationListenerNetwork)
var net_loc: Location? = null
var gps_loc: Location? = null
if (ActivityCompat.checkSelfPermission(context,
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED ||
ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED
) run {
ActivityCompat.requestPermissions(context as Activity,
arrayOf(Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION),111)
}
if (gps_enabled)
gps_loc = lm!!.getLastKnownLocation(LocationManager.GPS_PROVIDER)
if (network_enabled)
net_loc = lm!!.getLastKnownLocation(LocationManager.NETWORK_PROVIDER)
//if there are both values use the latest one
if (gps_loc != null && net_loc != null) {
if (gps_loc.getTime() > net_loc.getTime())
locationResult.gotLocation(gps_loc)
else
locationResult.gotLocation(net_loc)
return
}
if (gps_loc != null) {
locationResult.gotLocation(gps_loc)
return
}
if (net_loc != null) {
locationResult.gotLocation(net_loc)
return
}
locationResult.gotLocation(null)
}
}
abstract class LocationResult {
abstract fun gotLocation(location: Location?)
}
}

Simple and best way for GeoLocation.
LocationManager lm = null;
boolean network_enabled;
if (lm == null)
lm = (LocationManager) Kikit.this.getSystemService(Context.LOCATION_SERVICE);
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
dialog = ProgressDialog.show(Kikit.this, "", "Fetching location...", true);
final Handler handler = new Handler();
timer = new Timer();
TimerTask doAsynchronousTask = new TimerTask() {
#Override
public void run() {
handler.post(new Runnable() {
#Override
public void run()
{
Log.e("counter value","value "+counter);
if(counter<=8)
{
try
{
counter++;
if (network_enabled) {
lm = (LocationManager) Kikit.this.getSystemService(Context.LOCATION_SERVICE);
Log.e("in network_enabled..","in network_enabled");
// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener()
{
public void onLocationChanged(Location location)
{
if(attempt == false)
{
attempt = true;
Log.e("in location listener..","in location listener..");
longi = location.getLongitude();
lati = location.getLatitude();
Data.longi = "" + longi;
Data.lati = "" + lati;
Log.e("longitude : ",""+longi);
Log.e("latitude : ",""+lati);
if(faceboo_name.equals(""))
{
if(dialog!=null){
dialog.cancel();}
timer.cancel();
timer.purge();
Data.homepage_resume = true;
lm = null;
Intent intent = new Intent();
intent.setClass(Kikit.this,MainActivity.class);
startActivity(intent);
finish();
}
else
{
isInternetPresent = cd.isConnectingToInternet();
if (isInternetPresent)
{
if(dialog!=null)
dialog.cancel();
Showdata();
}
else
{
error_view.setText(Data.internet_error_msg);
error_view.setVisibility(0);
error_gone();
}
}
}
}
public void onStatusChanged(String provider, int status,
Bundle extras) {
}
public void onProviderEnabled(String provider) {
//Toast.makeText(getApplicationContext(), "Location enabled", Toast.LENGTH_LONG).show();
}
public void onProviderDisabled(String provider) {
}
};
// Register the listener with the Location Manager to receive
// location updates
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 100000, 10,locationListener);
} else{
//Toast.makeText(getApplicationContext(), "No Internet Connection.", 2000).show();
buildAlertMessageNoGps();
}
} catch (Exception e) {
// TODO
// Auto-generated
// catch
// block
}
}
else
{
timer.purge();
timer.cancel();
if(attempt == false)
{
attempt = true;
String locationProvider = LocationManager.NETWORK_PROVIDER;
// Or use LocationManager.GPS_PROVIDER
try {
Location lastKnownLocation = lm.getLastKnownLocation(locationProvider);
longi = lastKnownLocation.getLongitude();
lati = lastKnownLocation.getLatitude();
Data.longi = "" + longi;
Data.lati = "" + lati;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.i("exception in loc fetch", e.toString());
}
Log.e("longitude of last known location : ",""+longi);
Log.e("latitude of last known location : ",""+lati);
if(Data.fb_access_token == "")
{
if(dialog!=null){
dialog.cancel();}
timer.cancel();
timer.purge();
Data.homepage_resume = true;
Intent intent = new Intent();
intent.setClass(Kikit.this,MainActivity.class);
startActivity(intent);
finish();
}
else
{
isInternetPresent = cd.isConnectingToInternet();
if (isInternetPresent)
{
if(dialog!=null){
dialog.cancel();}
Showdata();
}
else
{
error_view.setText(Data.internet_error_msg);
error_view.setVisibility(0);
error_gone();
}
}
}
}
}
});
}
};
timer.schedule(doAsynchronousTask, 0, 2000);
private void buildAlertMessageNoGps() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Your WiFi & mobile network location is disabled , do you want to enable it?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(#SuppressWarnings("unused") final DialogInterface dialog, #SuppressWarnings("unused") final int id)
{
startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
setting_page = true;
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
dialog.cancel();
finish();
}
});
final AlertDialog alert = builder.create();
alert.show();
}

A bit late here but what I would in such a situation is to use Google Maps API and mark the nearby locations using lat and long API of google maps. Plus user experience is better if you can show his/her location on a map. No need to bother about the updation of user location or frisking with android api. Let google maps handle the internals for you.
#emmby may have got it resolved in his app but for future reference a look at Google maps API for location specific stuff is what I recommend to fellow developers.
Edit: Link for displaying user location in google maps

Here's what I do:
First of all I check whether NETWORK or GPS providers are enabled. Some may be disabled on the device, some may be disabled in application manifest. If any provider is enabled, I fetch cached last location for this provider and start location update listeners for this provider.
There is a method to determine whether a location is better than last received location as mentioned in link :- https://developer.android.com/guide/topics/location/strategies.html#BestEstimate
If I get update from location listener I check whether this location is better than previously received location. and If it is better than replace this location to previous best location(mFinalLocation).
There is also a handler(timer) for two minutes, which eventually stops the service and in onDestroy() method of service, stop listening for location updates for each of the provider.
Below is the code for service. You can run it based upon frequency of location update you need.
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.support.annotation.Nullable;
import android.util.Log;
public class RecordLocationService extends Service {
private final String TAG = RecordLocationService.class.getSimpleName();
private final int TWO_MINUTES = 1000 * 60 * 2;
private LocationManager mLocationManager;
private MyLocationListener mLocationListeners[] = new MyLocationListener[]{
new MyLocationListener(LocationManager.NETWORK_PROVIDER),
new MyLocationListener(LocationManager.GPS_PROVIDER)
};
private Location mFinalLocation;
private class MyLocationListener implements LocationListener {
private String mProvider;
public MyLocationListener(String provider) {
Log.d(TAG, "LocationListener : " + provider);
mProvider = provider;
}
public String getProvider() {
return mProvider;
}
#Override
public void onLocationChanged(Location location) {
Log.d(TAG, "onLocationChanged : " + location);
if (isBetterLocation(location, mFinalLocation)) {
Log.d(TAG, "Setting current Final Location to recent most Location for Provider : " + location.getProvider());
Log.d(TAG, "Setting current Final Location to : " + location);
mFinalLocation = location;
} else {
Log.d(TAG, "Keeping current Final Location to previous Final Location");
}
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d(TAG, "onStatusChanged provider " + provider);
}
#Override
public void onProviderEnabled(String provider) {
Log.d(TAG, "onProviderEnabled provider " + provider);
}
#Override
public void onProviderDisabled(String provider) {
Log.d(TAG, "onProviderDisabled provider " + provider);
}
}
private Handler mStopServiceHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 1: {
stopSelf();
}
break;
}
}
};
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
Log.d(TAG, "onStartCommand");
return START_STICKY;
}
#Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "onCreate");
requestLocation();
mStopServiceHandler.sendEmptyMessageDelayed(1, TWO_MINUTES);
}
private void requestLocation() {
// Acquire a reference to the system Location Manager
if (mLocationManager == null) {
mLocationManager = (LocationManager) this.getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
}
try {
if (mLocationManager.getAllProviders().contains(LocationManager.NETWORK_PROVIDER) && mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
Log.d(TAG, "Fetching Cached Location for Provider : " + LocationManager.NETWORK_PROVIDER);
Location cachedNetworkLocation = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (cachedNetworkLocation != null) {
Log.d(TAG, "Setting Final Location to Cached Location for Provider : " + LocationManager.NETWORK_PROVIDER);
Log.d(TAG, "Setting Final Location to : " + cachedNetworkLocation);
mFinalLocation = cachedNetworkLocation;
} else {
Log.d(TAG, "Cached Location for Provider : " + LocationManager.NETWORK_PROVIDER + " is NULL");
}
Log.d(TAG, "Requesting Location Update for Provider : " + LocationManager.NETWORK_PROVIDER);
mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, mLocationListeners[0]);
}
} catch (SecurityException se) {
Log.e(TAG, se.getMessage(), se);
} catch (IllegalArgumentException iae) {
Log.e(TAG, iae.getMessage(), iae);
}
try {
if (mLocationManager.getAllProviders().contains(LocationManager.GPS_PROVIDER) && mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
Log.d(TAG, "Fetching Cached Location for Provider : " + LocationManager.GPS_PROVIDER);
Location cachedGPSLocation = mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (cachedGPSLocation != null) {
if (isBetterLocation(cachedGPSLocation, mFinalLocation)) {
Log.d(TAG, "Setting Final Location to Cached Location for Provider : " + LocationManager.GPS_PROVIDER);
Log.d(TAG, "Setting Final Location to : " + cachedGPSLocation);
mFinalLocation = cachedGPSLocation;
}
} else {
Log.d(TAG, "Cached Location for Provider : " + LocationManager.GPS_PROVIDER + " is NULL");
}
Log.d(TAG, "Requesting Location Update for Provider : " + LocationManager.GPS_PROVIDER);
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mLocationListeners[1]);
}
} catch (SecurityException se) {
Log.e(TAG, se.getMessage(), se);
} catch (IllegalArgumentException iae) {
Log.e(TAG, iae.getMessage(), iae);
}
}
/**
* Determines whether one Location reading is better than the current Location fix
*
* #param location The new Location that you want to evaluate
* #param currentBestLocation The current Location fix, to which you want to compare the new one
*/
protected boolean isBetterLocation(Location location, Location currentBestLocation) {
if (currentBestLocation == null) {
// A new location is always better than no location
return true;
}
// Check whether the new location fix is newer or older
long timeDelta = location.getTime() - currentBestLocation.getTime();
boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
boolean isNewer = timeDelta > 0;
// If it's been more than two minutes since the current location, use the new location
// because the user has likely moved
if (isSignificantlyNewer) {
return true;
// If the new location is more than two minutes older, it must be worse
} else if (isSignificantlyOlder) {
return false;
}
// Check whether the new location fix is more or less accurate
int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
boolean isLessAccurate = accuracyDelta > 0;
boolean isMoreAccurate = accuracyDelta < 0;
boolean isSignificantlyLessAccurate = accuracyDelta > 200;
// Check if the old and new location are from the same provider
boolean isFromSameProvider = isSameProvider(location.getProvider(),
currentBestLocation.getProvider());
// Determine location quality using a combination of timeliness and accuracy
if (isMoreAccurate) {
return true;
} else if (isNewer && !isLessAccurate) {
return true;
} else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
return true;
}
return false;
}
/**
* Checks whether two providers are the same
*/
private boolean isSameProvider(String provider1, String provider2) {
if (provider1 == null) {
return provider2 == null;
}
return provider1.equals(provider2);
}
#Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy");
if (mLocationManager != null) {
for (int i = 0; i < mLocationListeners.length; i++) {
try {
Log.d(TAG, "Removing Location Update for Provider : " + mLocationListeners[i].getProvider());
mLocationManager.removeUpdates(mLocationListeners[i]);
} catch (Exception ex) {
Log.e(TAG, "fail to remove location listeners, ignore", ex);
}
}
}
}
}

In the Activity Class makes a customized method :
private void getTheUserPermission() {
ActivityCompat.requestPermissions(this, new String[]
{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_LOCATION);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationGetter locationGetter = new LocationGetter(FreshMenuSearchActivity.this, REQUEST_LOCATION, locationManager);
if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
locationGetter.OnGPS();
} else {
locationGetter.getLocation();
}
}
Make a UserDefined Class name LocationGetter:-
public class LocationGetter {
private int REQUEST_LOCATION;
private FreshMenuSearchActivity mContext;
private LocationManager locationManager;
private Geocoder geocoder;
public LocationGetter(FreshMenuSearchActivity mContext, int requestLocation, LocationManager locationManager) {
this.mContext = mContext;
this.locationManager = locationManager;
this.REQUEST_LOCATION = requestLocation;
}
public void getLocation() {
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext,
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(mContext, new String[]
{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_LOCATION);
} else {
Location LocationGps = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Location LocationNetwork = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
Location LocationPassive = locationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
if (LocationGps != null) {
double lat = LocationGps.getLatitude();
double longi = LocationGps.getLongitude();
getTheAddress(lat, longi);
} else if (LocationNetwork != null) {
double lat = LocationNetwork.getLatitude();
double longi = LocationNetwork.getLongitude();
getTheAddress(lat, longi);
} else if (LocationPassive != null) {
double lat = LocationPassive.getLatitude();
double longi = LocationPassive.getLongitude();
getTheAddress(lat, longi);
} else {
Toast.makeText(mContext, "Can't Get Your Location", Toast.LENGTH_SHORT).show();
}
}
}
private void getTheAddress(double latitude, double longitude) {
List<Address> addresses;
geocoder = new Geocoder(mContext, Locale.getDefault());
try {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
String address = addresses.get(0).getAddressLine(0);
String city = addresses.get(0).getLocality();
String state = addresses.get(0).getAdminArea();
String country = addresses.get(0).getCountryName();
String postalCode = addresses.get(0).getPostalCode();
String knownName = addresses.get(0).getFeatureName();
Log.d("neel", address);
} catch (IOException e) {
e.printStackTrace();
}
}
public void OnGPS() {
final AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setMessage("Enable GPS").setCancelable(false).setPositiveButton("YES", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
mContext.startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
}).setNegativeButton("NO", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
final AlertDialog alertDialog = builder.create();
alertDialog.show();
}
}

some of these ans are now out of date, so im answering,
FusedLocationProviderClient fusedLocationProviderClient; //set global variable
Location currentLocation;//set global var
private boolean mLocationPermissionGranted; //set global var
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(getContext()); //write this oncreate
fetchLastLocation(); // call the funct for current location
//here is the function
private void fetchLastLocation() {
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(getActivity(),new String[]{
Manifest.permission.ACCESS_FINE_LOCATION},REQUEST_CODE);
return;
}else {
mLocationPermissionGranted=true;
}
Task<Location> task= fusedLocationProviderClient.getLastLocation();
task.addOnSuccessListener(new OnSuccessListener<Location>() {
#Override
public void onSuccess(Location location) {
if(location != null){
currentLocation =location;
Toast.makeText(getContext(), currentLocation.getLatitude()+"" +
" "+currentLocation.getLongitude(),
Toast.LENGTH_SHORT).show();
//if you want to show in google maps
SupportMapFragment supportMapFragment =(SupportMapFragment)
getChildFragmentManager().findFragmentById(R.id.map);
supportMapFragment.getMapAsync(MapsFragment.this);
}
}
});
}

By using FusedLocationProviderApi which is the latest API and the best among the available possibilities to get location in Android.
add this in build.gradle file
dependencies {
compile 'com.google.android.gms:play-services:6.5.87'
}
you can get full source code by this url
http://javapapers.com/android/android-location-fused-provider/

Recently refactored to obtain the location of the code, learn some good ideas, and finally achieved a relatively perfect library and Demo.
//request all valid provider(network/gps)
private boolean requestAllProviderUpdates() {
checkRuntimeEnvironment();
checkPermission();
if (isRequesting) {
EasyLog.d("Request location update is busy");
return false;
}
long minTime = getCheckTimeInterval();
float minDistance = getCheckMinDistance();
if (mMapLocationListeners == null) {
mMapLocationListeners = new HashMap<>();
}
mValidProviders = getValidProviders();
if (mValidProviders == null || mValidProviders.isEmpty()) {
throw new IllegalArgumentException("Not available provider.");
}
for (String provider : mValidProviders) {
LocationListener locationListener = new LocationListener() {
#Override
public void onLocationChanged(Location location) {
if (location == null) {
EasyLog.e("LocationListener callback location is null.");
return;
}
printf(location);
mLastProviderTimestamp = location.getTime();
if (location.getProvider().equals(LocationManager.GPS_PROVIDER)) {
finishResult(location);
} else {
doLocationResult(location);
}
removeProvider(location.getProvider());
if (isEmptyValidProviders()) {
requestTimeoutMsgInit();
removeUpdates();
}
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
};
getLocationManager().requestLocationUpdates(provider, minTime, minDistance, locationListener);
mMapLocationListeners.put(provider, locationListener);
EasyLog.d("Location request %s provider update.", provider);
}
isRequesting = true;
return true;
}
//remove request update
public void removeUpdates() {
checkRuntimeEnvironment();
LocationManager locationManager = getLocationManager();
if (mMapLocationListeners != null) {
Set<String> keys = mMapLocationListeners.keySet();
for (String key : keys) {
LocationListener locationListener = mMapLocationListeners.get(key);
if (locationListener != null) {
locationManager.removeUpdates(locationListener);
EasyLog.d("Remove location update, provider is " + key);
}
}
mMapLocationListeners.clear();
isRequesting = false;
}
}
//Compared with the last successful position, to determine whether you need to filter
private boolean isNeedFilter(Location location) {
checkLocation(location);
if (mLastLocation != null) {
float distance = location.distanceTo(mLastLocation);
if (distance < getCheckMinDistance()) {
return true;
}
if (location.getAccuracy() >= mLastLocation.getAccuracy()
&& distance < location.getAccuracy()) {
return true;
}
if (location.getTime() <= mLastProviderTimestamp) {
return true;
}
}
return false;
}
private void doLocationResult(Location location) {
checkLocation(location);
if (isNeedFilter(location)) {
EasyLog.d("location need to filtered out, timestamp is " + location.getTime());
finishResult(mLastLocation);
} else {
finishResult(location);
}
}
//Return to the finished position
private void finishResult(Location location) {
checkLocation(location);
double latitude = location.getLatitude();
double longitude = location.getLongitude();
float accuracy = location.getAccuracy();
long time = location.getTime();
String provider = location.getProvider();
if (mLocationResultListeners != null && !mLocationResultListeners.isEmpty()) {
String format = "Location result:<%f, %f> Accuracy:%f Time:%d Provider:%s";
EasyLog.i(String.format(format, latitude, longitude, accuracy, time, provider));
mLastLocation = location;
synchronized (this) {
Iterator<LocationResultListener> iterator = mLocationResultListeners.iterator();
while (iterator.hasNext()) {
LocationResultListener listener = iterator.next();
if (listener != null) {
listener.onResult(location);
}
iterator.remove();
}
}
}
}
Complete code: https://github.com/bingerz/FastLocation/blob/master/fastlocationlib/src/main/java/cn/bingerz/fastlocation/FastLocation.java
*Each request to complete the location, it is best to removeUpdates, otherwise the phone status bar will always display the positioning icon.

After seeing all the answers, and question (Simplest and Robust). I got clicked about only library Android-ReactiveLocation.
When i made an location tracking app. Then i realized that its very typical to handle location tracking with optimised with battery.
So i want tell freshers and also developers who don't want to maintain their location code with future optimisations. Use this library.
ReactiveLocationProvider locationProvider = new
ReactiveLocationProvider(context);
locationProvider.getLastKnownLocation()
.subscribe(new Consumer<Location>() {
#Override
public void call(Location location) {
doSthImportantWithObtainedLocation(location);
}
});
Dependencies to put in app level build.gradle
dependencies {
...
compile 'pl.charmas.android:android-reactive-location2:2.1#aar'
compile 'com.google.android.gms:play-services-location:11.0.4' //you can use newer GMS version if you need
compile 'com.google.android.gms:play-services-places:11.0.4'
compile 'io.reactivex:rxjava:2.0.5' //you can override RxJava version if you need
}
Pros to use this lib:
This lib is and will be actively maintained.
You dont worry about battery optimisation. As developers have done their best.
Easy installation, put dependency and play.
easily connect to Play Services API
obtain last known location
subscribe for location updates use
location settings API
manage geofences
geocode location to list of addresses
activity recognition
use current place API fetch place
autocomplete suggestions

How do I get the current GPS location programmatically in Android?

I need to get my current location using GPS programmatically.
How can i achieve it?

I have created a small application with step by step description to get current location's GPS coordinates.
Complete example source code is in Get Current Location coordinates , City name - in Android.
See how it works:
All we need to do is add this permission in the manifest file:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
And create a LocationManager instance like this:
LocationManager locationManager = (LocationManager)
getSystemService(Context.LOCATION_SERVICE);
Check if GPS is enabled or not.
And then implement LocationListener and get coordinates:
LocationListener locationListener = new MyLocationListener();
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 5000, 10, locationListener);
Here is the sample code to do so
/*---------- Listener class to get coordinates ------------- */
private class MyLocationListener implements LocationListener {
#Override
public void onLocationChanged(Location loc) {
editLocation.setText("");
pb.setVisibility(View.INVISIBLE);
Toast.makeText(
getBaseContext(),
"Location changed: Lat: " + loc.getLatitude() + " Lng: "
+ loc.getLongitude(), Toast.LENGTH_SHORT).show();
String longitude = "Longitude: " + loc.getLongitude();
Log.v(TAG, longitude);
String latitude = "Latitude: " + loc.getLatitude();
Log.v(TAG, latitude);
/*------- To get city name from coordinates -------- */
String cityName = null;
Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
List<Address> addresses;
try {
addresses = gcd.getFromLocation(loc.getLatitude(),
loc.getLongitude(), 1);
if (addresses.size() > 0) {
System.out.println(addresses.get(0).getLocality());
cityName = addresses.get(0).getLocality();
}
}
catch (IOException e) {
e.printStackTrace();
}
String s = longitude + "\n" + latitude + "\n\nMy Current City is: "
+ cityName;
editLocation.setText(s);
}
#Override
public void onProviderDisabled(String provider) {}
#Override
public void onProviderEnabled(String provider) {}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
}

There are already many answers there but I want to show latest way to get location using Google API, so new programmers can use new method:
I have written detailed tutorial on current location in android at my blog demonuts.com You can also find full source code developed with android studio.
First of all, put this in gradle file
compile 'com.google.android.gms:play-services:9.0.2'
then implement necessary interfaces
public class MainActivity extends BaseActivitiy implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener
declare instances
private GoogleApiClient mGoogleApiClient;
private Location mLocation;
private LocationManager locationManager;
private LocationRequest mLocationRequest;
put this in onCreate()
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
At last, override necessary methods
#Override
public void onConnected(Bundle bundle) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
} startLocationUpdates();
mLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if(mLocation == null){
startLocationUpdates();
}
if (mLocation != null) {
double latitude = mLocation.getLatitude();
double longitude = mLocation.getLongitude();
} else {
// Toast.makeText(this, "Location not Detected", Toast.LENGTH_SHORT).show();
}
}
protected void startLocationUpdates() {
// Create the location request
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(UPDATE_INTERVAL)
.setFastestInterval(FASTEST_INTERVAL);
// Request location updates
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,
mLocationRequest, this);
Log.d("reque", "--->>>>");
}
#Override
public void onConnectionSuspended(int i) {
Log.i(TAG, "Connection Suspended");
mGoogleApiClient.connect();
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i(TAG, "Connection failed. Error: " + connectionResult.getErrorCode());
}
#Override
public void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
#Override
public void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}
#Override
public void onLocationChanged(Location location) {
}
Don't forget to start GPS in your device before running app.

Since I didn't like some of the code in the other answers, here's my simple solution. This solution is meant to be usable in an Activity or Service to track the location. It makes sure that it never returns data that's too stale unless you explicitly request stale data. It can be run in either a callback mode to get updates as we receive them, or in poll mode to poll for the most recent info.
Generic LocationTracker interface. Allows us to have multiple types of location trackers and plug the appropriate one in easily:
package com.gabesechan.android.reusable.location;
import android.location.Location;
public interface LocationTracker {
public interface LocationUpdateListener{
public void onUpdate(Location oldLoc, long oldTime, Location newLoc, long newTime);
}
public void start();
public void start(LocationUpdateListener update);
public void stop();
public boolean hasLocation();
public boolean hasPossiblyStaleLocation();
public Location getLocation();
public Location getPossiblyStaleLocation();
}
ProviderLocationTracker- this class will track the location for either GPS or NETWORK.
package com.gabesechan.android.reusable.location;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public class ProviderLocationTracker implements LocationListener, LocationTracker {
// The minimum distance to change Updates in meters
private static final long MIN_UPDATE_DISTANCE = 10;
// The minimum time between updates in milliseconds
private static final long MIN_UPDATE_TIME = 1000 * 60;
private LocationManager lm;
public enum ProviderType{
NETWORK,
GPS
};
private String provider;
private Location lastLocation;
private long lastTime;
private boolean isRunning;
private LocationUpdateListener listener;
public ProviderLocationTracker(Context context, ProviderType type) {
lm = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
if(type == ProviderType.NETWORK){
provider = LocationManager.NETWORK_PROVIDER;
}
else{
provider = LocationManager.GPS_PROVIDER;
}
}
public void start(){
if(isRunning){
//Already running, do nothing
return;
}
//The provider is on, so start getting updates. Update current location
isRunning = true;
lm.requestLocationUpdates(provider, MIN_UPDATE_TIME, MIN_UPDATE_DISTANCE, this);
lastLocation = null;
lastTime = 0;
return;
}
public void start(LocationUpdateListener update) {
start();
listener = update;
}
public void stop(){
if(isRunning){
lm.removeUpdates(this);
isRunning = false;
listener = null;
}
}
public boolean hasLocation(){
if(lastLocation == null){
return false;
}
if(System.currentTimeMillis() - lastTime > 5 * MIN_UPDATE_TIME){
return false; //stale
}
return true;
}
public boolean hasPossiblyStaleLocation(){
if(lastLocation != null){
return true;
}
return lm.getLastKnownLocation(provider)!= null;
}
public Location getLocation(){
if(lastLocation == null){
return null;
}
if(System.currentTimeMillis() - lastTime > 5 * MIN_UPDATE_TIME){
return null; //stale
}
return lastLocation;
}
public Location getPossiblyStaleLocation(){
if(lastLocation != null){
return lastLocation;
}
return lm.getLastKnownLocation(provider);
}
public void onLocationChanged(Location newLoc) {
long now = System.currentTimeMillis();
if(listener != null){
listener.onUpdate(lastLocation, lastTime, newLoc, now);
}
lastLocation = newLoc;
lastTime = now;
}
public void onProviderDisabled(String arg0) {
}
public void onProviderEnabled(String arg0) {
}
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
}
}
The is the FallbackLocationTracker, which will track by both GPS and NETWORK, and use whatever location is more accurate.
package com.gabesechan.android.reusable.location;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
public class FallbackLocationTracker implements LocationTracker, LocationTracker.LocationUpdateListener {
private boolean isRunning;
private ProviderLocationTracker gps;
private ProviderLocationTracker net;
private LocationUpdateListener listener;
Location lastLoc;
long lastTime;
public FallbackLocationTracker(Context context) {
gps = new ProviderLocationTracker(context, ProviderLocationTracker.ProviderType.GPS);
net = new ProviderLocationTracker(context, ProviderLocationTracker.ProviderType.NETWORK);
}
public void start(){
if(isRunning){
//Already running, do nothing
return;
}
//Start both
gps.start(this);
net.start(this);
isRunning = true;
}
public void start(LocationUpdateListener update) {
start();
listener = update;
}
public void stop(){
if(isRunning){
gps.stop();
net.stop();
isRunning = false;
listener = null;
}
}
public boolean hasLocation(){
//If either has a location, use it
return gps.hasLocation() || net.hasLocation();
}
public boolean hasPossiblyStaleLocation(){
//If either has a location, use it
return gps.hasPossiblyStaleLocation() || net.hasPossiblyStaleLocation();
}
public Location getLocation(){
Location ret = gps.getLocation();
if(ret == null){
ret = net.getLocation();
}
return ret;
}
public Location getPossiblyStaleLocation(){
Location ret = gps.getPossiblyStaleLocation();
if(ret == null){
ret = net.getPossiblyStaleLocation();
}
return ret;
}
public void onUpdate(Location oldLoc, long oldTime, Location newLoc, long newTime) {
boolean update = false;
//We should update only if there is no last location, the provider is the same, or the provider is more accurate, or the old location is stale
if(lastLoc == null){
update = true;
}
else if(lastLoc != null && lastLoc.getProvider().equals(newLoc.getProvider())){
update = true;
}
else if(newLoc.getProvider().equals(LocationManager.GPS_PROVIDER)){
update = true;
}
else if (newTime - lastTime > 5 * 60 * 1000){
update = true;
}
if(update){
if(listener != null){
listener.onUpdate(lastLoc, lastTime, newLoc, newTime);
}
lastLoc = newLoc;
lastTime = newTime;
}
}
}
Since both implement the LocationTracker interface, you can easily change your mind about which one to use. To run the class in poll mode, just call start(). To run it in update mode, call start(Listener).
Also take a look at my blog post on the code

Get location of gps by -
LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
LocationListener locationListener = new LocationListener()
{
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
double latitude = location.getLatitude();
double longitude = location.getLongitude();
double speed = location.getSpeed(); //spedd in meter/minute
speed = (speed*3600)/1000; // speed in km/minute Toast.makeText(GraphViews.this, "Current speed:" + location.getSpeed(),Toast.LENGTH_SHORT).show();
}
};
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}

As of the second half of 2020, there is a much easier way to do this.
Excluding requesting permissions (which I will include at the bottom for devs newer to this), below is the code.
Just remember, you need to include at least this version of the library in your dependencies (in the app's build.gradle):
implementation 'com.google.android.gms:play-services-location:17.1.0'
... and of course the fine permission in your manifest:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Kotlin (first the setup):
private val fusedLocationClient: FusedLocationProviderClient by lazy {
LocationServices.getFusedLocationProviderClient(applicationContext)
}
private var cancellationTokenSource = CancellationTokenSource()
Then the main code (for FINE_LOCATION):
private fun requestCurrentLocation() {
// Check Fine permission
if (ActivityCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_FINE_LOCATION) ==
PackageManager.PERMISSION_GRANTED) {
// Main code
val currentLocationTask: Task<Location> = fusedLocationClient.getCurrentLocation(
PRIORITY_HIGH_ACCURACY,
cancellationTokenSource.token
)
currentLocationTask.addOnCompleteListener { task: Task<Location> ->
val result = if (task.isSuccessful) {
val result: Location = task.result
"Location (success): ${result.latitude}, ${result.longitude}"
} else {
val exception = task.exception
"Location (failure): $exception"
}
Log.d(TAG, "getCurrentLocation() result: $result")
}
} else {
// Request fine location permission (full code below).
}
If you prefer Java, it looks like this:
public class JavaVersion extends AppCompatActivity {
private final String TAG = "MainActivity";
// The Fused Location Provider provides access to location APIs.
private FusedLocationProviderClient fusedLocationClient;
// Allows class to cancel the location request if it exits the activity.
// Typically, you use one cancellation source per lifecycle.
private final CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
}
...
private void requestCurrentLocation() {
Log.d(TAG, "requestCurrentLocation()");
// Request permission
if (ActivityCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_FINE_LOCATION) ==
PackageManager.PERMISSION_GRANTED) {
// Main code
Task<Location> currentLocationTask = fusedLocationClient.getCurrentLocation(
PRIORITY_HIGH_ACCURACY,
cancellationTokenSource.getToken()
);
currentLocationTask.addOnCompleteListener((new OnCompleteListener<Location>() {
#Override
public void onComplete(#NonNull Task<Location> task) {
String result = "";
if (task.isSuccessful()) {
// Task completed successfully
Location location = task.getResult();
result = "Location (success): " +
location.getLatitude() +
", " +
location.getLongitude();
} else {
// Task failed with an exception
Exception exception = task.getException();
result = "Exception thrown: " + exception;
}
Log.d(TAG, "getCurrentLocation() result: " + result);
}
}));
} else {
// TODO: Request fine location permission
Log.d(TAG, "Request fine location permission.");
}
}
...
}
The arguments:
PRIORITY type is self-explanatory. (Other options are PRIORITY_BALANCED_POWER_ACCURACY, PRIORITY_LOW_POWER, and PRIORITY_NO_POWER.)
CancellationToken - This allows you to cancel the request if, for instance, the user navigates away from your Activity.
Example (Kotlin):
override fun onStop() {
super.onStop()
// Cancels location request (if in flight).
cancellationTokenSource.cancel()
}
That's it.
Now, this does use the FusedLocationProviderClient which is a Google Play Services APIs.
That means this works on all Android devices with the Google Play Store (which is a lot of them). However, for devices in China without the Play Store, this won't work, so take that into account.
For developers who are a little newer to this, you need to request the fine (or coarse) location permission if the user hasn't approved it yet, so in the code above, I would request the location permission.
Below is the full code (in Kotlin).
I hope that helps (and makes your live's a little easier)!
/**
* Demonstrates how to easily get the current location via the [FusedLocationProviderClient.getCurrentLocation].
* The main code is in this class's requestCurrentLocation() method.
*/
class MainActivity : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
// The Fused Location Provider provides access to location APIs.
private val fusedLocationClient: FusedLocationProviderClient by lazy {
LocationServices.getFusedLocationProviderClient(applicationContext)
}
// Allows class to cancel the location request if it exits the activity.
// Typically, you use one cancellation source per lifecycle.
private var cancellationTokenSource = CancellationTokenSource()
// If the user denied a previous permission request, but didn't check "Don't ask again", this
// Snackbar provides an explanation for why user should approve, i.e., the additional rationale.
private val fineLocationRationalSnackbar by lazy {
Snackbar.make(
binding.container,
R.string.fine_location_permission_rationale,
Snackbar.LENGTH_LONG
).setAction(R.string.ok) {
requestPermissions(
arrayOf(Manifest.permission.ACCESS_FINE_LOCATION),
REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE
)
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
val view = binding.root
setContentView(view)
}
override fun onStop() {
super.onStop()
// Cancels location request (if in flight).
cancellationTokenSource.cancel()
}
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<String>,
grantResults: IntArray
) {
Log.d(TAG, "onRequestPermissionResult()")
if (requestCode == REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE) {
when {
grantResults.isEmpty() ->
// If user interaction was interrupted, the permission request
// is cancelled and you receive an empty array.
Log.d(TAG, "User interaction was cancelled.")
grantResults[0] == PackageManager.PERMISSION_GRANTED ->
Snackbar.make(
binding.container,
R.string.permission_approved_explanation,
Snackbar.LENGTH_LONG
)
.show()
else -> {
Snackbar.make(
binding.container,
R.string.fine_permission_denied_explanation,
Snackbar.LENGTH_LONG
)
.setAction(R.string.settings) {
// Build intent that displays the App settings screen.
val intent = Intent()
intent.action = Settings.ACTION_APPLICATION_DETAILS_SETTINGS
val uri = Uri.fromParts(
"package",
BuildConfig.APPLICATION_ID,
null
)
intent.data = uri
intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
startActivity(intent)
}
.show()
}
}
}
}
fun locationRequestOnClick(view: View) {
Log.d(TAG, "locationRequestOnClick()")
requestCurrentLocation()
}
/**
* Gets current location.
* Note: The code checks for permission before calling this method, that is, it's never called
* from a method with a missing permission. Also, I include a second check with my extension
* function in case devs just copy/paste this code.
*/
private fun requestCurrentLocation() {
Log.d(TAG, "requestCurrentLocation()")
if (ActivityCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_FINE_LOCATION) ==
PackageManager.PERMISSION_GRANTED) {
// Returns a single current location fix on the device. Unlike getLastLocation() that
// returns a cached location, this method could cause active location computation on the
// device. A single fresh location will be returned if the device location can be
// determined within reasonable time (tens of seconds), otherwise null will be returned.
//
// Both arguments are required.
// PRIORITY type is self-explanatory. (Other options are PRIORITY_BALANCED_POWER_ACCURACY,
// PRIORITY_LOW_POWER, and PRIORITY_NO_POWER.)
// The second parameter, [CancellationToken] allows the activity to cancel the request
// before completion.
val currentLocationTask: Task<Location> = fusedLocationClient.getCurrentLocation(
PRIORITY_HIGH_ACCURACY,
cancellationTokenSource.token
)
currentLocationTask.addOnCompleteListener { task: Task<Location> ->
val result = if (task.isSuccessful) {
val result: Location = task.result
"Location (success): ${result.latitude}, ${result.longitude}"
} else {
val exception = task.exception
"Location (failure): $exception"
}
Log.d(TAG, "getCurrentLocation() result: $result")
logOutputToScreen(result)
}
} else {
val provideRationale = shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)
if (provideRationale) {
fineLocationRationalSnackbar.show()
} else {
requestPermissions(arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE)
}
}
}
private fun logOutputToScreen(outputString: String) {
val finalOutput = binding.outputTextView.text.toString() + "\n" + outputString
binding.outputTextView.text = finalOutput
}
companion object {
private const val TAG = "MainActivity"
private const val REQUEST_FINE_LOCATION_PERMISSIONS_REQUEST_CODE = 34
}
}

You need to use latest/newest
GoogleApiClient Api
Basically what you need to do is:
private GoogleApiClient mGoogleApiClient;
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
Then
#Override
public void onConnected(Bundle connectionHint) {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
mLatitudeText.setText(String.valueOf(mLastLocation.getLatitude()));
mLongitudeText.setText(String.valueOf(mLastLocation.getLongitude()));
}
}
for the most accurate and reliable location. See my post here:
https://stackoverflow.com/a/33599228/2644905
Do not use LocationListener which is not accurate and has delayed response. To be honest this is easier to implement.
Also read documentation: https://developers.google.com/android/reference/com/google/android/gms/common/api/GoogleApiClient

class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled = false;
boolean network_enabled = false;
public boolean getLocation(Context context, LocationResult result) {
// I use LocationResult callback class to pass location value from
// MyLocation to user code.
locationResult = result;
if (lm == null)
lm = (LocationManager) context
.getSystemService(Context.LOCATION_SERVICE);
// Exceptions will be thrown if the provider is not permitted.
try {
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
}
catch (Exception ex) {
}
try {
network_enabled = lm
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
}
catch (Exception ex) {
}
// Don't start listeners if no provider is enabled.
if (!gps_enabled && !network_enabled)
return false;
if (gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,
locationListenerGps);
if (network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0,
locationListenerNetwork);
timer1 = new Timer();
timer1.schedule(new GetLastLocation(), 5000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
class GetLastLocation extends TimerTask {
#Override
public void run() {
lm.removeUpdates(locationListenerGps);
lm.removeUpdates(locationListenerNetwork);
Location net_loc = null, gps_loc = null;
if (gps_enabled)
gps_loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (network_enabled)
net_loc = lm
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
// If there are both values, use the latest one.
if (gps_loc != null && net_loc != null) {
if (gps_loc.getTime() > net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if (gps_loc != null) {
locationResult.gotLocation(gps_loc);
return;
}
if (net_loc != null) {
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult {
public abstract void gotLocation(Location location);
}
}
I hope this will help you...

Now that Google Play locations services are here, I recommend that developers start using the new fused location provider. You will find it easier to use and more accurate. Please watch the Google I/O video Beyond the Blue Dot: New Features in Android Location by the two guys who created the new Google Play location services API.
I've been working with location APIs on a number of mobile platforms, and I think what these two guys have done is really revolutionary. It's gotten rid of a huge amount of the complexities of using the various providers. Stack Overflow is littered with questions about which provider to use, whether to use last known location, how to set other properties on the LocationManager, etc. This new API that they have built removes most of those uncertainties and makes the location services a pleasure to use.
I've written an Android app that periodically gets the location using Google Play location services and sends the location to a web server where it is stored in a database and can be viewed on Google Maps. I've written both the client software (for Android, iOS, Windows Phone and Java ME) and the server software (for ASP.NET and SQL Server or PHP and MySQL). The software is written in the native language on each platform and works properly in the background on each. Lastly, the software has the MIT License. You can find the Android client here:
https://github.com/nickfox/GpsTracker/tree/master/phoneClients/android

GoogleSamples has verbose example using latest FusedLocationProviderApi.
Unfortunately the most upvoted answers are out of date.
Follow the below examples to implement Location Services using FusedLocationProviderApi
https://github.com/googlesamples/android-play-location/tree/master/LocationUpdates
https://github.com/googlesamples/android-play-location/blob/master/LocationUpdates/app/src/main/java/com/google/android/gms/location/sample/locationupdates/MainActivity.java

LocationManager is a class that provides in-build methods to get last know location
STEP 1 :Create a LocationManager Object as below
LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
STEP 2 : Add Criteria
*Criteria is use for setting accuracy*
Criteria criteria = new Criteria();
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
if (currentapiVersion >= android.os.Build.VERSION_CODES.HONEYCOMB) {
criteria.setSpeedAccuracy(Criteria.ACCURACY_HIGH);
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(true);
criteria.setBearingRequired(true);
criteria.setSpeedRequired(true);
}
STEP 3 :GET Avaliable Provider
Threre are two types of provider GPS and network
String provider = locationManager.getBestProvider(criteria, true);
STEP 4: Get Last Know Location
Location location = locationManager.getLastKnownLocation(provider);
STEP 5: Get Latitude and Longitude
If location object is null then dont try to call below methods
getLatitude and getLongitude is methods which returns double values

Getting location updates requires lots of bolierplate code in Android, You need to take care of
Google Play services availablity Check,
Update Google play Service if it is old or not available
Dialog Creation of GoogleApiClient and its callbacks connected,disconnected etc.
Stopping and releasing resources for location updates
Handling Location permission scenarios
Checking Location services are On or Off
Getting lastknown location is not so easy either
Fallback to last known location if not getting location after certain duration
To ease out all these steps i have created Android-EasyLocation (small android library) which will take care all this stuff and you can focus on business logic.
All you need is extend EasyLocationActivity and this
requestSingleLocationFix(easyLocationRequest);
or
requestLocationUpdates(easyLocationRequest);
Checkout sample app and steps needed here at https://github.com/akhgupta/Android-EasyLocation

I have made a project from which we can get the accurate location using Google Play Services, GPS and Network providers. This project can be found here.
Strategy in finding the best location is that first get the location from google play services if location is found then check weather it is better or not, if location found is null restart google play services and try to fetch the location from Android Location API. Register the location on change listeners and when ever the better location is found the call back returns it to the main activity.
It is very simple to use and implement in code only two classes we need to embed i.e. LocationManagerInterface and SmartLocationManager, LocationActivity is implementing the interface and using SmartLocationManager to fetch location.
/**
* Created by Syed Raza Mehdi Naqvi on 8/10/2016.
*/
public interface LocationManagerInterface {
String TAG = LocationManagerInterface.class.getSimpleName();
void locationFetched(Location mLocation, Location oldLocation, String time, String locationProvider);
}
here is the location manager class
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import java.text.DateFormat;
import java.util.Date;
/**
* Created by Syed Raza Mehdi Naqvi on 8/9/2016.
*/
public class SmartLocationManager implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private static final String TAG = SmartLocationManager.class.getSimpleName();
private static final int TWO_MINUTES = 1000 * 60 * 2;
private static final int PERMISSION_REQUEST_CODE = 1000;
private static final int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
// default value is false but user can change it
private String mLastLocationUpdateTime; // fetched location time
private String locationProvider; // source of fetched location
private Location mLastLocationFetched; // location fetched
private Location mLocationFetched; // location fetched
private Location networkLocation;
private Location gpsLocation;
private int mLocationPiority;
private long mLocationFetchInterval;
private long mFastestLocationFetchInterval;
private Context mContext; // application context
private Activity mActivity; // activity context
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
private LocationManagerInterface mLocationManagerInterface;
private android.location.LocationManager locationManager;
private android.location.LocationListener locationListener;
boolean isGPSEnabled;
boolean isNetworkEnabled;
private int mProviderType;
public static final int NETWORK_PROVIDER = 1;
public static final int ALL_PROVIDERS = 0;
public static final int GPS_PROVIDER = 2;
// private final double STANDARD_LOCATION_ACCURACY = 100.0;
// private final double STANDARD_LOCATION_SEED_LIMIT = 6.95;
public static final int LOCATION_PROVIDER_ALL_RESTICTION = 1;
public static final int LOCATION_PROVIDER_RESTRICTION_NONE = 0;
public static final int LOCATION_PROVIDER_GPS_ONLY_RESTICTION = 2;
public static final int LOCATION_PROVIDER_NETWORK_ONLY_RESTICTION = 3;
private int mForceNetworkProviders = 0;
public SmartLocationManager(Context context, Activity activity, LocationManagerInterface locationInterface, int providerType, int locationPiority, long locationFetchInterval, long fastestLocationFetchInterval, int forceNetworkProviders) {
mContext = context;
mActivity = activity;
mProviderType = providerType;
mLocationPiority = locationPiority;
mForceNetworkProviders = forceNetworkProviders;
mLocationFetchInterval = locationFetchInterval;
mFastestLocationFetchInterval = fastestLocationFetchInterval;
mLocationManagerInterface = locationInterface;
initSmartLocationManager();
}
public void initSmartLocationManager() {
// 1) ask for permission for Android 6 above to avoid crash
// 2) check if gps is available
// 3) get location using awesome strategy
askLocationPermission(); // for android version 6 above
checkNetworkProviderEnable(mForceNetworkProviders); //
if (isGooglePlayServicesAvailable()) // if googleplay services available
initLocationObjts(); // init obj for google play service and start fetching location
else
getLocationUsingAndroidAPI(); // otherwise get location using Android API
}
private void initLocationObjts() {
// Create the LocationRequest object
mLocationRequest = LocationRequest.create()
.setPriority(mLocationPiority)
.setInterval(mLocationFetchInterval) // 10 seconds, in milliseconds
.setFastestInterval(mFastestLocationFetchInterval); // 1 second, in milliseconds
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(mActivity)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
startLocationFetching(); // connect google play services to fetch location
}
#Override
public void onConnected(Bundle connectionHint) {
Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
startLocationUpdates();
if (location == null) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
getLocationUsingAndroidAPI();
} else {
setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
}
}
#Override
public void onLocationChanged(Location location) {
if (location == null) {
getLastKnownLocation();
} else {
setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
}
}
#Override
public void onConnectionSuspended(int i) {
Log.i(TAG, "Connection suspended");
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
if (connectionResult.hasResolution()) {
try {
connectionResult.startResolutionForResult(mActivity, CONNECTION_FAILURE_RESOLUTION_REQUEST); // Start an Activity that tries to resolve the error
getLocationUsingAndroidAPI(); // try to get location using Android API locationManager
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
} else {
Log.i(TAG, "Location services connection failed with code " + connectionResult.getErrorCode());
}
}
private void setNewLocation(Location location, Location oldLocation) {
if (location != null) {
mLastLocationFetched = oldLocation;
mLocationFetched = location;
mLastLocationUpdateTime = DateFormat.getTimeInstance().format(new Date());
locationProvider = location.getProvider();
mLocationManagerInterface.locationFetched(location, mLastLocationFetched, mLastLocationUpdateTime, location.getProvider());
}
}
private void getLocationUsingAndroidAPI() {
// Acquire a reference to the system Location Manager
locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
setLocationListner();
captureLocation();
}
public void captureLocation() {
if (Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
try {
if (mProviderType == SmartLocationManager.GPS_PROVIDER) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
} else if (mProviderType == SmartLocationManager.NETWORK_PROVIDER) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
} else {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
}
private void setLocationListner() {
// Define a listener that responds to location updates
locationListener = new android.location.LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location provider.
if (location == null) {
getLastKnownLocation();
} else {
setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
// if (isLocationAccurate(location) && location.getAccuracy() < STANDARD_LOCATION_ACCURACY && location.getSpeed() < STANDARD_LOCATION_SEED_LIMIT) {// no use of this if
// setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
// } else {
// setNewLocation(getBetterLocation(location, mLocationFetched), mLocationFetched);
// }
}
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public void onProviderEnabled(String provider) {
}
public void onProviderDisabled(String provider) {
}
};
}
public Location getAccurateLocation() {
if (Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return null;
}
try {
gpsLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
networkLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
Location newLocalGPS, newLocalNetwork;
if (gpsLocation != null || networkLocation != null) {
newLocalGPS = getBetterLocation(mLocationFetched, gpsLocation);
newLocalNetwork = getBetterLocation(mLocationFetched, networkLocation);
setNewLocation(getBetterLocation(newLocalGPS, newLocalNetwork), mLocationFetched);
}
} catch (Exception ex) {
Log.e(TAG, ex.getMessage());
}
return mLocationFetched;
}
protected void startLocationUpdates() {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
public void startLocationFetching() {
mGoogleApiClient.connect();
if (mGoogleApiClient.isConnected()) {
startLocationUpdates();
}
}
public void pauseLocationFetching() {
if (mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
mGoogleApiClient.disconnect();
}
}
public void abortLocationFetching() {
mGoogleApiClient.disconnect();
// Remove the listener you previously added
if (locationManager != null && locationListener != null) {
if (Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
try {
locationManager.removeUpdates(locationListener);
locationManager = null;
} catch (Exception ex) {
Log.e(TAG, ex.getMessage());
}
}
}
public void resetLocation() {
mLocationFetched = null;
mLastLocationFetched = null;
networkLocation = null;
gpsLocation = null;
}
// Android M Permission check
public void askLocationPermission() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(mActivity, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED
|| ContextCompat.checkSelfPermission(mActivity, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
) {
if (ActivityCompat.shouldShowRequestPermissionRationale(mActivity, Manifest.permission.ACCESS_COARSE_LOCATION)
|| ActivityCompat.shouldShowRequestPermissionRationale(mActivity, Manifest.permission.ACCESS_FINE_LOCATION)) {
final AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
builder.setMessage("Please allow all permissions in App Settings for additional functionality.")
.setCancelable(false)
.setPositiveButton("Allow", new DialogInterface.OnClickListener() {
public void onClick(#SuppressWarnings("unused") final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
Toast.makeText(mContext, "Welcome", Toast.LENGTH_SHORT).show();
}
})
.setNegativeButton("Deny", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
mActivity.finish();
}
});
final AlertDialog alert = builder.create();
alert.show();
} else
ActivityCompat.requestPermissions(mActivity, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION
, Manifest.permission.ACCESS_FINE_LOCATION
}, PERMISSION_REQUEST_CODE);
}
}
}
public void checkNetworkProviderEnable(int enforceActive) {
locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
buildAlertMessageTurnOnLocationProviders("Your location providers seems to be disabled, please enable it", "OK", "Cancel");
} else if (!isGPSEnabled && mForceNetworkProviders == LOCATION_PROVIDER_GPS_ONLY_RESTICTION) {
buildAlertMessageTurnOnLocationProviders("Your GPS seems to be disabled, please enable it", "OK", "Cancel");
} else if (!isNetworkEnabled && mForceNetworkProviders == LOCATION_PROVIDER_NETWORK_ONLY_RESTICTION) {
buildAlertMessageTurnOnLocationProviders("Your Network location provider seems to be disabled, please enable it", "OK", "Cancel");
}
// getting network status
if (!isGPSEnabled && !isNetworkEnabled) {
Toast.makeText(mContext, "Location can't be fetched!", Toast.LENGTH_SHORT).show(); // show alert
mActivity.finish();
}
}
private void buildAlertMessageTurnOnLocationProviders(String message, String positiveButtonText, String negativeButtonText) {
final AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
builder.setMessage(message)
.setCancelable(false)
.setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {
public void onClick(#SuppressWarnings("unused") final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
Intent mIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(mIntent);
}
})
.setNegativeButton(negativeButtonText, new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
mActivity.finish();
}
});
final AlertDialog alert = builder.create();
alert.show();
}
public Location getLastKnownLocation() {
locationProvider = LocationManager.NETWORK_PROVIDER;
Location lastKnownLocation = null;
// Or use LocationManager.GPS_PROVIDER
if (Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return lastKnownLocation;
}
try {
lastKnownLocation = locationManager.getLastKnownLocation(locationProvider);
return lastKnownLocation;
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
return lastKnownLocation;
}
public boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(mContext);
if (status == ConnectionResult.SUCCESS) {
return true;
} else {
return false;
}
}
/**
* Determines whether one Location reading is better than the current Location fix
*
* #param location The new Location that you want to evaluate
* #param currentBestLocation The current Location fix, to which you want to compare the new one
*/
protected Location getBetterLocation(Location location, Location currentBestLocation) {
if (currentBestLocation == null) {
// A new location is always better than no location
return location;
}
// Check whether the new location fix is newer or older
long timeDelta = location.getTime() - currentBestLocation.getTime();
boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
boolean isNewer = timeDelta > 0;
// If it's been more than two minutes since the current location, use the new location
// because the user has likely moved
if (isSignificantlyNewer) {
return location;
// If the new location is more than two minutes older, it must be worse
} else if (isSignificantlyOlder) {
return currentBestLocation;
}
// Check whether the new location fix is more or less accurate
int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy());
boolean isLessAccurate = accuracyDelta > 0;
boolean isMoreAccurate = accuracyDelta < 0;
boolean isSignificantlyLessAccurate = accuracyDelta > 200;
// Check if the old and new location are from the same provider
boolean isFromSameProvider = isSameProvider(location.getProvider(),
currentBestLocation.getProvider());
// Determine location quality using a combination of timeliness and accuracy
if (isMoreAccurate) {
return location;
} else if (isNewer && !isLessAccurate) {
return location;
} else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
return location;
}
return currentBestLocation;
}
/**
* Checks whether two providers are the same
*/
private boolean isSameProvider(String provider1, String provider2) {
if (provider1 == null) {
return provider2 == null;
}
return provider1.equals(provider2);
}
public boolean isLocationAccurate(Location location) {
if (location.hasAccuracy()) {
return true;
} else {
return false;
}
}
public Location getStaleLocation() {
if (mLastLocationFetched != null) {
return mLastLocationFetched;
}
if (Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission(mContext, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return null;
}
if (mProviderType == SmartLocationManager.GPS_PROVIDER) {
return locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
} else if (mProviderType == SmartLocationManager.NETWORK_PROVIDER) {
return locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
} else {
return getBetterLocation(locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER), locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER));
}
}
}
we can use it with activity or a fragment, here i am using it with activity
import android.location.Location;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import android.widget.Toast;
import com.example.raza.locationaware.location.LocationManagerInterface;
import com.example.raza.locationaware.location.SmartLocationManager;
import com.google.android.gms.location.LocationRequest;
public class LocationActivity extends AppCompatActivity implements LocationManagerInterface {
public static final String TAG = LocationActivity.class.getSimpleName();
SmartLocationManager mLocationManager;
TextView mLocalTV, mLocationProviderTV, mlocationTimeTV;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_location);
mLocationManager = new SmartLocationManager(getApplicationContext(), this, this, SmartLocationManager.ALL_PROVIDERS, LocationRequest.PRIORITY_HIGH_ACCURACY, 10 * 1000, 1 * 1000, SmartLocationManager.LOCATION_PROVIDER_RESTRICTION_NONE); // init location manager
mLocalTV = (TextView) findViewById(R.id.locationDisplayTV);
mLocationProviderTV = (TextView) findViewById(R.id.locationProviderTV);
mlocationTimeTV = (TextView) findViewById(R.id.locationTimeFetchedTV);
}
protected void onStart() {
super.onStart();
mLocationManager.startLocationFetching();
}
protected void onStop() {
super.onStop();
mLocationManager.abortLocationFetching();
}
#Override
protected void onPause() {
super.onPause();
mLocationManager.pauseLocationFetching();
}
#Override
public void locationFetched(Location mLocal, Location oldLocation, String time, String locationProvider) {
Toast.makeText(getApplication(), "Lat : " + mLocal.getLatitude() + " Lng : " + mLocal.getLongitude(), Toast.LENGTH_LONG).show();
mLocalTV.setText("Lat : " + mLocal.getLatitude() + " Lng : " + mLocal.getLongitude());
mLocationProviderTV.setText(locationProvider);
mlocationTimeTV.setText(time);
}
}
Hope it helps, if you can suggest any improvement kindly post it on git. Thanks.

For just location checking you can use following code. You can put it in your onStart() of main activity and display alert dialog if return is false.
private boolean isLocationAccurate()
{
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
{
String provider = Settings.Secure
.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if (provider != null && !provider.contains("gps"))
{
return false;
}
}
else
{
try
{
int status = Settings.Secure
.getInt(this.getContentResolver(), Settings.Secure.LOCATION_MODE);
if (status != Settings.Secure.LOCATION_MODE_HIGH_ACCURACY)
{
return false;
}
}
catch (Settings.SettingNotFoundException e)
{
Log.e(TAG, e.getMessage());
}
}
return true;
}

I have got very accurate location using FusedLocationProviderClient
(Google Play services required)
Permissions Required
android.permission.ACCESS_FINE_LOCATION
android.permission.ACCESS_COARSE_LOCATION
Dependency
'com.google.android.gms:play-services-location:15.0.0'
Kotlin Code
val client = FusedLocationProviderClient(this)
val location = client.lastLocation
location.addOnCompleteListener {
// this is a lambda expression and we get an 'it' iterator to access the 'result'
// it.result.latitude gives the latitude
// it.result.longitude gives the longitude
val geocoder = Geocoder(applicationContext, Locale.getDefault())
val address = geocoder.getFromLocation(it.result.latitude, it.result.longitude, 1)
if (address != null && address.size > 0) {
// Get the current city
city = address[0].locality
}
}
location.addOnFailureListener {
// Some error in getting the location, let's log it
Log.d("xtraces", it.message)
}

Since September 23, 2020 play-services-location version 17.1.0 includes FusedLocationProviderClient.getCurrentLocation() method which is the recommended and straightforward way to get the current location:
Returns a single current location fix on the device. Unlike getLastLocation() that returns a cached location, this method could cause active location computation on the device. A single fresh location will be returned if the device location can be determined within reasonable time (tens of seconds), otherwise null will be returned.
For a detailed example take a look at codingjeremy's answer and an official Android location sample on GitHub - Current Location (Kotlin).

If you are creating new location projects for Android you should use the new Google Play location services. It is much more accurate and much simpler to use.
I have been working on an open source GPS tracker project, GpsTracker, for several years. I recently updated it to handle periodic updates from Android, iOS, Windows Phone and Java ME cell phones. It is fully functional and does what you need and has the MIT License.
The Android project within GpsTracker uses the new Google Play services and there are also two server stacks (ASP.NET and PHP) to allow you to track those phones.

April 2020
Full steps to get current location, and avoid Last Known Location nullability.
According to official documentation, Last Known Location could be Null in case of:
Location is turned off in the device settings. As it clears the
cache.
The device never recorded its location. (New device)
Google Play services on the device has restarted.
In this case, you should requestLocationUpdates and receive the new location on the LocationCallback.
By the following steps your last known Location never null.
Pre-requisite:
EasyPermission library
Step 1:
In manifest file add this permission
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Step 2:
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
//Create location callback when it's ready.
createLocationCallback()
//createing location request, how mant request would be requested.
createLocationRequest()
//Build check request location setting request
buildLocationSettingsRequest()
//FusedLocationApiClient which includes location
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this)
//Location setting client
mSettingsClient = LocationServices.getSettingsClient(this)
//Check if you have ACCESS_FINE_LOCATION permission
if (!EasyPermissions.hasPermissions(
this#MainActivity,
Manifest.permission.ACCESS_FINE_LOCATION)) {
requestPermissionsRequired()
}
else{
//If you have the permission we should check location is opened or not
checkLocationIsTurnedOn()
}
}
Step 3:
Create required functions to be called in onCreate()
private fun requestPermissionsRequired() {
EasyPermissions.requestPermissions(
this,
getString(R.string.location_is_required_msg),
LOCATION_REQUEST,
Manifest.permission.ACCESS_FINE_LOCATION
)
}
private fun createLocationCallback() {
//Here the location will be updated, when we could access the location we got result on this callback.
mLocationCallback = object : LocationCallback() {
override fun onLocationResult(locationResult: LocationResult) {
super.onLocationResult(locationResult)
mCurrentLocation = locationResult.lastLocation
}
}
}
private fun buildLocationSettingsRequest() {
val builder = LocationSettingsRequest.Builder()
builder.addLocationRequest(mLocationRequest!!)
mLocationSettingsRequest = builder.build()
builder.setAlwaysShow(true)
}
private fun createLocationRequest() {
mLocationRequest = LocationRequest.create()
mLocationRequest!!.interval = 0
mLocationRequest!!.fastestInterval = 0
mLocationRequest!!.numUpdates = 1
mLocationRequest!!.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
}
public fun checkLocationIsTurnedOn() { // Begin by checking if the device has the necessary location settings.
mSettingsClient!!.checkLocationSettings(mLocationSettingsRequest)
.addOnSuccessListener(this) {
Log.i(TAG, "All location settings are satisfied.")
startLocationUpdates()
}
.addOnFailureListener(this) { e ->
val statusCode = (e as ApiException).statusCode
when (statusCode) {
LocationSettingsStatusCodes.RESOLUTION_REQUIRED -> {
try {
val rae = e as ResolvableApiException
rae.startResolutionForResult(this#MainActivity, LOCATION_IS_OPENED_CODE)
} catch (sie: IntentSender.SendIntentException) {
}
}
LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE -> {
mRequestingLocationUpdates = false
}
}
}
}
private fun startLocationUpdates() {
mFusedLocationClient!!.requestLocationUpdates(
mLocationRequest,
mLocationCallback, null
)
}
Step 4:
Handle callbacks in onActivityResult() after ensuring the location is opened or the user accepts to open it in.
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
when (requestCode) {
LOCATION_IS_OPENED_CODE -> {
if (resultCode == AppCompatActivity.RESULT_OK) {
Log.d(TAG, "Location result is OK")
} else {
activity?.finish()
}
}
}
Step 5:
Get last known location from FusedClientApi
override fun onMapReady(map: GoogleMap) {
mMap = map
mFusedLocationClient.lastLocation.addOnSuccessListener {
if(it!=null){
locateUserInMap(it)
}
}
}
private fun locateUserInMap(location: Location) {
showLocationSafetyInformation()
if(mMap!=null){
val currentLocation = LatLng(location.latitude,location.longitude )
addMarker(currentLocation)
}
}
private fun addMarker(currentLocation: LatLng) {
val cameraUpdate = CameraUpdateFactory.newLatLng(currentLocation)
mMap?.clear()
mMap?.addMarker(
MarkerOptions().position(currentLocation)
.title("Current Location")
)
mMap?.moveCamera(cameraUpdate)
mMap?.animateCamera(cameraUpdate)
mMap?.setMinZoomPreference(14.0f);
}
I hope this would help.
Happy Coding 🤓

I have published a small library that can make it easy to get location data in Android, it even takes care of Android M runtime permissions.
You might check it out here: https://github.com/julioromano/RxLocation and use it or its source code as examples for your implementation.

Simple Find Write Code in On Location Method
public void onLocationChanged(Location location) {
if (mCurrLocationMarker != null) {
mCurrLocationMarker.remove();
}
//Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Position");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
mCurrLocationMarker = mMap.addMarker(markerOptions);
//move map camera
mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.animateCamera(CameraUpdateFactory.zoomTo(18));
PolylineOptions pOptions = new PolylineOptions()
.width(5)
.color(Color.GREEN)
.geodesic(true);
for (int z = 0; z < routePoints.size(); z++) {
LatLng point = routePoints.get(z);
pOptions.add(point);
}
line = mMap.addPolyline(pOptions);
routePoints.add(latLng);
}

Best way to fetch location is below
// put dependancy
implementation 'com.google.android.gms:play-services-location:11.0.4'
// PUT permissions in Menifest
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
// create a Java file as below
public class SingleShotLocationProvider {
public static interface LocationCallback {
public void onNewLocationAvailable(GPSCoordinates location);
}
// calls back to calling thread, note this is for low grain: if you want higher precision, swap the
// contents of the else and if. Also be sure to check gps permission/settings are allowed.
// call usually takes <10ms
public static void requestSingleUpdate(final Context context, final LocationCallback callback) {
final LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
boolean isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (isNetworkEnabled) {
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_COARSE);
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestSingleUpdate(criteria, new LocationListener() {
#Override
public void onLocationChanged(Location location) {
callback.onNewLocationAvailable(new GPSCoordinates(location.getLatitude(), location.getLongitude()));
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
}, null);
} else {
boolean isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (isGPSEnabled) {
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
locationManager.requestSingleUpdate(criteria, new LocationListener() {
#Override
public void onLocationChanged(Location location) {
callback.onNewLocationAvailable(new GPSCoordinates(location.getLatitude(), location.getLongitude()));
}
#Override public void onStatusChanged(String provider, int status, Bundle extras) { }
#Override public void onProviderEnabled(String provider) { }
#Override public void onProviderDisabled(String provider) { }
}, null);
}
}
}
// consider returning Location instead of this dummy wrapper class
public static class GPSCoordinates {
public float longitude = -1;
public float latitude = -1;
public GPSCoordinates(float theLatitude, float theLongitude) {
longitude = theLongitude;
latitude = theLatitude;
}
public GPSCoordinates(double theLatitude, double theLongitude) {
longitude = (float) theLongitude;
latitude = (float) theLatitude;
}
}
}
// FILE FINISHED
// FETCH LOCATION FROM ACTIVITY AS BELOW
public void getLocation(Context context) {
MyApplication.log(LOG_TAG, "getLocation() ");
SingleShotLocationProvider.requestSingleUpdate(context,
new SingleShotLocationProvider.LocationCallback() {
#Override
public void onNewLocationAvailable(SingleShotLocationProvider.GPSCoordinates loc) {
location = loc;
MyApplication.log(LOG_TAG, "getLocation() LAT: " + location.latitude + ", LON: " + location.longitude);
}
});
}

Edit 2022: Don't use this as that lib has memory leaks and is not support/updated any more.
I will recommend using Smart Location Library
Very simple to use and it wraps the location logic nicely.
For starting the location service:
SmartLocation.with(context).location()
.start(new OnLocationUpdatedListener() { ... });
If you just want to get a single location (not periodic) you can just use the oneFix modifier. Example:
SmartLocation.with(context).location()
.oneFix()
.start(new OnLocationUpdatedListener() { ... });