Develop Reference

GPS Location Is Enabled but Cant Find the Coordinates

I use the Below code to get the Long Lat and its works fine when GPS location is on. But Issue is. when i turned Off the GPS location and then turn it On again. It didnt Show me the Any Log Lat.
public class GetGPSlocation implements LocationListener {
Context context;
public GetGPSlocation(Context c) {
context = c;
}
public Location getLocation() {
if (ActivityCompat.checkSelfPermission(this.context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
Toast.makeText(context, "Permision Not Granted", Toast.LENGTH_SHORT).show();
return null;
}
LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
boolean isGPSenabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (isGPSenabled) {
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 6000, 10, this);
Location l = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
return l;
} else {
Toast.makeText(context, "Please Enable GPS", Toast.LENGTH_LONG).show();
}
return null;
}
#Override
public void onLocationChanged(Location location) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
i use this code on button CLick Listner...
btnSaveAttd.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
GetGPSlocation g = new GetGPSlocation(v.getContext());
Location l = g.getLocation();
if (l!=null){
LAT = l.getLatitude();
LON = l.getLongitude();
}
AlertDialog.Builder alertDialog = new AlertDialog.Builder(v.getContext());
alertDialog.setTitle("Confirmation");
alertDialog.setMessage("Are you sure you want to Call this doctor?\n\n" +
"DocID: " +DocID.getText().toString()+ "\n"+
"EmpName: " + empName.getText().toString() + "\n"+
"DateTime: " + date +"\n" +
"Time: "+time+"\n"+
"Status : " + spinner.getSelectedItem()+"\n"+
"Location: "+LON +" , " +LAT);
alertDialog.setIcon(R.drawable.ic_menu_camera);
alertDialog.setPositiveButton("YES",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
//endregion
alertDialog.setNegativeButton("NO",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
alertDialog.show();
}
});
And Any one can tell me is there any way to enable GPS location automatically if GPS is disabled?

You can listen to changes of providers (i.e GPS) using Broadcast Receiver:
registerReceiver(mReceiverCallback, new IntentFilter(LocationManager.PROVIDERS_CHANGED_ACTION));
private BroadcastReceiver mReceiverCallback = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().matches("android.location.PROVIDERS_CHANGED")) {
// Do whatever you want here
}
}
};

onLocationChanged() not called in Android

I'm developing a mini app to detect the current location of the user which i follow on this website http://androidexample.com/GPS_Basic__-__Android_Example/index.php?view=article_discription&aid=68 . I'm able to change the Lat and Lon in the extended control on the emulator itself. But when comes to using in my Xiaomi 1S (running version 4.2.2) phone it does not show any of my location. Below is my code
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnShowLocation = (Button) findViewById(R.id.btnShowLocation);
btnSpoof = (Button) findViewById(R.id.btn_spoof);
lblShowLat = (TextView) findViewById(R.id.lblShowLat);
lblShowLon = (TextView) findViewById(R.id.lblShowLon);
lblShowTime = (TextView) findViewById(R.id.lblShowTime);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
btnShowLocation.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
Thread t = new Thread() {
#Override
public void run() {
try {
while (!isInterrupted()) {
Thread.sleep(1000);
runOnUiThread(new Runnable() {
#Override
public void run() {
updateDateTime();
// Toast.makeText(getApplicationContext(), "Refresh ", Toast.LENGTH_LONG).show();
}
});
}
} catch (InterruptedException e) {
}
}
};
t.start();
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
} else {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
2);
}
}
lblShowLat.setText("No Lat");
lblShowLon.setText("No Lon");
}
#Override
//code does not run here
public void onLocationChanged(Location location) {
if(location !=null) {
lblShowLat.setText(Double.toString(location.getLatitude()));
lblShowLon.setText(Double.toString(location.getLongitude()));
String str = "Latitude: " + location.getLatitude() + " Longitude: " + location.getLongitude();
System.out.println("Latitude: " + location.getLatitude() + " Longitude: " + location.getLongitude());
Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(this, "Unable to find your location, try again", Toast.LENGTH_SHORT).show();
}
}
Your help is appreciated thank you

I think You forgot to add this line ,
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,3000,10,this);
and as well as ensure that device gps and network is enable or not with internet connectivity.

Please add these line ..it will work for you .
Add permission:-
android.permission.ACCESS_FINE_LOCATION
android.permission. ACCESS_COARSE_LOCATION
android.permission.INTERNET
In Java.class:-
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtLat = (TextView) findViewById(R.id.textview1);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
}
#Override
public void onLocationChanged(Location location)
{
txtLat = (TextView) findViewById(R.id.textview1);
txtLat.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
}
#Override
public void onProviderDisabled(String provider)
{
Log.d("Latitude","disable");
}
#Override
public void onProviderEnabled(String provider) {
Log.d("Latitude","enable");
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d("Latitude","status");
}
}

Google Location Services API, not accurate location

I am using the following code to get accurate location of user, however I have to say that location is not accurate. It varies within 30meters which is not acceptable if you wanna get exact location for crucial purposes. I use the code below (followed a tutorial) to get the accurate location however it's not precise. Any hints on how to get more preferably 100% accurate position.
Activity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new_location);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("Nieuwe Locatie Toevoegen");
setSupportActionBar(toolbar);
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
boolean gps_enabled = false;
boolean network_enabled = false;
try {
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch(Exception ex) {}
try {
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch(Exception ex) {}
if(!gps_enabled && !network_enabled) {
// notify user
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("Enable Gps Location plaeast");
dialog.setPositiveButton("Ja ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
// TODO Auto-generated method stub
Intent myIntent = new Intent( Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(myIntent);
//get gps
}
});
dialog.setNegativeButton("Nee liever niet", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
// TODO Auto-generated method stub
}
});
dialog.show();
}
if (checkGooglePlayServices()) {
buildGoogleApiClient();
//prepare connection request
createLocationRequest();
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
private boolean checkGooglePlayServices() {
int checkGooglePlayServices = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(this);
if (checkGooglePlayServices != ConnectionResult.SUCCESS) {
/*
* google play services is missing or update is required
* return code could be
* SUCCESS,
* SERVICE_MISSING, SERVICE_VERSION_UPDATE_REQUIRED,
* SERVICE_DISABLED, SERVICE_INVALID.
*/
GooglePlayServicesUtil.getErrorDialog(checkGooglePlayServices,
this, REQUEST_CODE_RECOVER_PLAY_SERVICES).show();
return false;
}
return true;
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE_RECOVER_PLAY_SERVICES) {
if (resultCode == RESULT_OK) {
// Make sure the app is not already connected or attempting to connect
if (!mGoogleApiClient.isConnecting() &&
!mGoogleApiClient.isConnected()) {
mGoogleApiClient.connect();
}
}else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "Google Play Services must be installed.",
Toast.LENGTH_SHORT).show();
finish();
}
}
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
#Override
public void onConnected(Bundle bundle) {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
//
// Toast.makeText(this, "Latitude:" + mLastLocation.getLatitude()+", Longitude:"+mLastLocation.getLongitude(),Toast.LENGTH_LONG).show();
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(this, Locale.getDefault());
try {
addresses = geocoder.getFromLocation(mLastLocation.getLatitude(), mLastLocation.getLongitude(), 1);
String city = addresses.get(0).getLocality();
String address = addresses.get(0).getAddressLine(0);
String postalCode = addresses.get(0).getPostalCode();
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("You locatie momenteel is : "+ " " + address + " " + city + " " + postalCode);
dialog.setPositiveButton("Ja dit klopt", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
dialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
dialog.show();
//Toast.makeText(this, "Stad:" + city + " Straat: "+ address + " Postcode :" + postalCode, Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
}
}
startLocationUpdates();
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
// Second Part
#Override
protected void onStart() {
super.onStart();
if (mGoogleApiClient != null) {
mGoogleApiClient.connect();
}
}
protected void startLocationUpdates() {
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(20000);
mLocationRequest.setFastestInterval(5000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
Toast.makeText(this, "Update -> Latitude:" + mLastLocation.getLatitude()+", Longitude:"+mLastLocation.getLongitude(),Toast.LENGTH_LONG).show();
}
protected void stopLocationUpdates() {
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient, this);
}
}
#Override
protected void onPause() {
super.onPause();
stopLocationUpdates();
}
#Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient != null) {
mGoogleApiClient.disconnect();
}
}
}
Thanks in advance,

Isit possible to find the Current Location in Android using Latitude Longitude and Altitude

Manifest
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
OnCreate
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_get_location_main);
//All textView
textViewNetLat = (TextView)findViewById(R.id.textViewNetLat);
textViewNetLng = (TextView)findViewById(R.id.textViewNetLng);
textViewGpsLat = (TextView)findViewById(R.id.textViewGpsLat);
textViewGpsLng = (TextView)findViewById(R.id.textViewGpsLng);
}
public void onDestroy() {
//Remove GPS location update
if(glocManager != null){
glocManager.removeUpdates(glocListener);
Log.d("ServiceForLatLng", "GPS Update Released");
}
//Remove Network location update
if(nlocManager != null){
nlocManager.removeUpdates(nlocListener);
Log.d("ServiceForLatLng", "Network Update Released");
}
super.onDestroy();
}
//This is for Lat lng which is determine by your wireless or mobile network
public class MyLocationListenerNetWork implements LocationListener
{
#Override
public void onLocationChanged(Location loc)
{
nlat = loc.getLatitude();
nlng = loc.getLongitude();
//Setting the Network Lat, Lng into the textView
textViewNetLat.setText("Network Latitude: " + nlat);
textViewNetLng.setText("Network Longitude: " + nlng);
Log.d("LAT & LNG Network:", nlat + " " + nlng);
}
#Override
public void onProviderDisabled(String provider)
{
Log.d("LOG", "Network is OFF!");
}
#Override
public void onProviderEnabled(String provider)
{
Log.d("LOG", "Thanks for enabling Network !");
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
}
//This is for Lat lng which is determine by your device GPS
public class MyLocationListenerGPS implements LocationListener
{
#Override
public void onLocationChanged(Location loc)
{
glat = loc.getLatitude();
glng = loc.getLongitude();
//Setting the GPS Lat, Lng into the textView
textViewGpsLat.setText("GPS Latitude: " + glat);
textViewGpsLng.setText("GPS Longitude: " + glng);
Log.d("LAT & LNG GPS:", glat + " " + glng);
}
#Override
public void onProviderDisabled(String provider)
{
Log.d("LOG", "GPS is OFF!");
}
#Override
public void onProviderEnabled(String provider)
{
Log.d("LOG", "Thanks for enabling GPS !");
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
}
public void showLoc(View v) {
//Location access ON or OFF checking
ContentResolver contentResolver = getBaseContext().getContentResolver();
boolean gpsStatus = Settings.Secure.isLocationProviderEnabled(contentResolver, LocationManager.GPS_PROVIDER);
boolean networkWifiStatus = Settings.Secure.isLocationProviderEnabled(contentResolver, LocationManager.NETWORK_PROVIDER);
//If GPS and Network location is not accessible show an alert and ask user to enable both
if(!gpsStatus || !networkWifiStatus)
{
AlertDialog.Builder alertDialog = new AlertDialog.Builder(GetLocationMainActivity.this);
alertDialog.setTitle("Make your location accessible ...");
alertDialog.setMessage("Your Location is not accessible to us.To show location you have to enable it.");
alertDialog.setIcon(R.drawable.warning);
alertDialog.setNegativeButton("Enable", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
startActivityForResult(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS), 0);
}
});
alertDialog.setPositiveButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {
Toast.makeText(getApplicationContext(), "Remember to show location you have to enable it !", Toast.LENGTH_SHORT).show();
dialog.cancel();
}
});
alertDialog.show();
}
//IF GPS and Network location is accessible
else
{
nlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
nlocListener = new MyLocationListenerNetWork();
nlocManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000 * 1, 0, nlocListener);
glocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
glocListener = new MyLocationListenerGPS();
glocManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000 * 1, 0, glocListener);
}
}
}

This Looks similar:
Google api
It is javasript, but you can use the Google api in andriod as well :-)

Testing GPS current location on Android mobile phone

When, I test this code on my android mobile phone the current location doesn't show up. Should I configure my mobile or increment new code into the code to allow it run on my mobile properly. A hint will be much appreciated. the code is as follows
public class GetLocation extends Activity {
TextView tv;
double latitude,longitude,accuracy;
private LocationManager lm;
private LocationListener lo;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView)this.findViewById(R.id.txtLocation);
lm=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
lo = new mylocationlistener();
tv.setText("waiting for location");
if (!lm.isProviderEnabled(LocationManager.GPS_PROVIDER)){
createGpsDisabledAlert();
}
}
//dialog to check if gps enabled or not
private void createGpsDisabledAlert() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Your GPS is disabled! Would you like to enable it?")
.setCancelable(false)
.setPositiveButton("Enable GPS",
new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id){
showGpsOptions();
}
});
builder.setNegativeButton("Do nothing",
new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id){
dialog.cancel();
}
}); //close negative builder
AlertDialog alert = builder.create();
alert.show();
}
private void showGpsOptions(){
Intent gpsOptionsIntent = new Intent(
android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(gpsOptionsIntent);
}
private class mylocationlistener implements LocationListener {
public void onLocationChanged(Location location) {
if (location !=null){
longitude = location.getLongitude();
latitude = location.getLatitude();
accuracy = location.getAccuracy();
/*
Log.d("LOCATION CHANGED", latitude + "");
Log.d("LOCATION CHANGED", longitude + "");
*/ String str = "\n CurrentLocation: "+
"\n Latitude: "+ latitude +
"\n Longitude: " + longitude +
"\n Accuracy: " + accuracy;
Toast.makeText(GetLocation.this,str,Toast.LENGTH_LONG).show();
tv.append(str);
}
}
public void onProviderDisabled(String provider) {
Toast.makeText(GetLocation.this,"Error onProviderDisabled",Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String provider) {
Toast.makeText(GetLocation.this,"onProviderEnabled",Toast.LENGTH_LONG).show();
}
public void onStatusChanged(String provider, int status, Bundle extras) {
Toast.makeText(GetLocation.this,"onStatusChanged",Toast.LENGTH_LONG).show();
}
}
#Override
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
}
public void onResume(){
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, lo);
super.onResume();
}
}

In your onCreate you need to call lm.requestLocationUpdates() to get your location listener working . See Requesting Location Updates