Develop Reference

request location updates never called onLocationResult

I am using FusedLocationProvider to get the last location of the phone. Unfortunately the returned location is far from being accurate and it is not updating!.
Even When I call requestlocationupdates,the OnlocationResult never being called with PRIORITY_HIGH_ACCURACY. BUT it called ONLY once with PRIORITY_BALANCED_POWER_ACCURACY.
protected void startLocationUpdates() {
// Create the location request to start receiving updates
locationRequest = new LocationRequest();
locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
locationRequest.setInterval(5000);
locationRequest.setFastestInterval(1000);
// Create LocationSettingsRequest object using location request
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
builder.addLocationRequest(locationRequest);
LocationSettingsRequest locationSettingsRequest = builder.build();
// Check whether location settings are satisfied
// https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient
SettingsClient settingsClient = LocationServices.getSettingsClient(this);
Task<LocationSettingsResponse> task =settingsClient.checkLocationSettings(locationSettingsRequest);
task.addOnSuccessListener(new OnSuccessListener<LocationSettingsResponse>() {
#Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
// All location settings are satisfied. The client can initialize
// location requests here.
// ...
Log.i("SRV", "onSuccess: Location settings are satisfied");
}
});
task.addOnFailureListener( new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
if (e instanceof ResolvableApiException) {
// Location settings are not satisfied, but this can be fixed
// by showing the user a dialog.
Log.i("SRV", "onFailure: ");
}
}
});
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// Activity#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 Activity#requestPermissions for more details.
initialized = false;
//return;
}
}
// new Google API SDK v11 uses getFusedLocationProviderClient(this)
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
mFusedLocationClient.requestLocationUpdates(locationRequest, new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
super.onLocationResult(locationResult);
Log.i("SRV", "onLocationResult is called ");
if (locationResult == null) {
return;
}
for (Location location : locationResult.getLocations()) {
if (location != null) {
Log.i("SRV", "My new location is " + location.getLatitude() + " " + location.getLongitude());
onLocationChanged(location);
}
}
}
#Override
public void onLocationAvailability(LocationAvailability locationAvailability) {
Log.i("SRV", "onLocationAvailability is called ");
}
},
Looper.myLooper());
//get last location
mFusedLocationClient.getLastLocation().addOnSuccessListener(location -> {
if (location != null) {
_phoneLocation = location;
Log.i("SRV", "getLastLocation is called : My position " + location.getLatitude() + " " + location.getLongitude());
}
});
Log.i("SRV", "Startlocation updated was completed succesfully");
}
I expect the OnlocationResult to be called and updated very 5 seconds.

It turns out that it is a stupid thing. We spent too much time on this. I had some issues of checking the permissions and allowing it.
Here I post the final code that works perfectly. Make sure to allow the location permission when it prompts. If you are debugging many times, It is recommended to uninstall the app first to allow the permission again.
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION},
1);
} else if (mMap != null) {
mMap.setMyLocationEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(true);
}

How can I get continuous location updates in Android like in Google Maps?

I'm building a friend tracking android app. While my friend activated the app and goes away along with his GPS and cellular data on, I need to track him on my device. That's the concept.
I've implemented LocationListener class and now I can get the last updated location either from Gps or Network but is not updated unless I launch Google Maps and return to my application. After googling, I learned that location cache is updated only by GMaps.!
Is there an alternate way to continuously update location?
What if when I need to get continues location after the device locked without making use of Wakelock?
This is my location listener class:
package com.amazinginside;
/** AMAZING LOCATION SUPPORT CLASS, Devoloped By SANGEETH NANDAKUMAR */
import android.app.AlertDialog;
import android.app.Service;
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.os.IBinder;
import android.provider.Settings;
public class AmazingLocation extends Service implements LocationListener
{
private final Context mContext;
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
boolean canGetLocation = false;
Location location;
double latitude=0.0;
double longitude=0.0;
//MINIMUM DISTANCE FOR UPDATE (meters)
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // 0 Meters
//MINIMUM TIME BETWEEN UPDATES
private static final long MIN_TIME_BW_UPDATES = 1000 * 0; // 0 Seconds
//LOCATION MANAGER
protected LocationManager locationManager;
//CONSTRUCTOR
public AmazingLocation(Context context)
{
this.mContext = context;
getLocation();
}
//LOCATION PROVISION
public Location getLocation()
{
try
{
//GET LOCATION MANAGER
locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
//CHECK GPS STATE
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
//CHECK NETWORK STATE
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled)
{
//NO LOCATION PROVIDERS
}
else
{
this.canGetLocation = true;
/** GET LOCATION FROM NETWORK */
//FIRST GET LOCATION FROM NETWORK
if (isNetworkEnabled)
{
//REQUEST LOCATION
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null)
{
//START WITH LAST KNOWN LOCATION
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//EXTRACT LOCATION
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
/** GET LOCATION FROM GPS SENSOR */
//THEN GET LOCATION FROM GPS
if (isGPSEnabled)
{
if (location == null)
{
//REQUEST GPS LOCATION
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null)
{
//EXTRACT LAST KNOWN LOCATION
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
//RETURN LOCATION
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
return location;
}
//STOP GPS SENSOR
public void stopUsingGPS()
{
if(locationManager != null)
{
locationManager.removeUpdates(AmazingLocation.this);
}
}
//EXTRACT LATTITUDE
public double getLatitude()
{
if(location != null)
{
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
//EXTACT LONGITUDE
public double getLongitude()
{
if(location != null)
{
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
//CAN I GET THE LOCATION.?
public AmazingStatus canGetLocation()
{
AmazingStatus status=new AmazingStatus();
if(this.canGetLocation)
{
status.setStatus(true);
status.setErrorcode(0);
status.setErrormsg("Task completed");
}
else
{
status.setStatus(false);
status.setErrorcode(145);
status.setErrormsg("Please turn on GPS access manually");
}
return status;
}
//SHOW LOCATION SETTINGS
public AmazingStatus showSettingsAlert()
{
final AmazingStatus status=new AmazingStatus();
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
alertDialog.setTitle("REQUIRES LOCATION ACCESS");
alertDialog.setMessage("Please allow GPS access to this app");
//POSSITIVE REPLY
alertDialog.setPositiveButton("Allow", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog,int which)
{
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
status.setStatus(true);
status.setErrorcode(0);
status.setErrormsg("Task completed");
}
});
//NEGATIVE REPLY
alertDialog.setNegativeButton("Deny", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
status.setStatus(false);
status.setErrorcode(408);
status.setErrormsg("User denied permission");
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
return status;
}
//UNUSED OVERRIDE METHORDS...
#Override
public void onLocationChanged(Location location)
{
getLocation();
}
#Override
public void onProviderDisabled(String provider)
{
}
#Override
public void onProviderEnabled(String provider)
{
getLocation();
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
getLocation();
}
#Override
public IBinder onBind(Intent arg0)
{
return null;
}
}
This my onCreate() method:
#Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//CREATE A BUTTON HANDLER
Button start_btn=(Button)findViewById(R.id.start_location_streaming);
//ON BUTTON CLICK EVENT
start_btn.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
//REPEAT A METHORD AT SPECIFIC INTERVALS
Timer myTimer = new Timer();
myTimer.schedule(new TimerTask()
{
#Override
public void run()
{
TimerMethod();
}
}, 0, 8000);
}
}); }
These are other methods:
private void TimerMethod()
{
//START METHORD
this.runOnUiThread(Timer_Tick);
}
//LOCATION REPORTING METHORD
private Runnable Timer_Tick = new Runnable()
{
public void run()
{
Toast.makeText(MainActivity.this, "Current latitude : "+Double.toString(getLocation().latitude), Toast.LENGTH_SHORT).show();
Toast.makeText(MainActivity.this, "Current longitude : "+Double.toString(getLocation().longitude), Toast.LENGTH_SHORT).show();
}
};
private LatLng getLocation()
{
//CREATE A LOCATION CLASS INSTANCE
AmazingLocation gps = new AmazingLocation(this);
//RETRIVE LOCATION
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
//RETURN LOCATION
LatLng loc=new LatLng(latitude,longitude);
return loc;
}
Now the problem is, the toast just shows previously known the location and not updating unless I opened Google Maps and returned.
Any help will be great for me.

Use Fused location provider in Android set your interval in that:
For an example create your activity like this:
public class LocationActivity extends Activity implements
LocationListener,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private static final String TAG = "LocationActivity";
private static final long INTERVAL = 1000 * 10;
private static final long FASTEST_INTERVAL = 1000 * 5;
Button btnFusedLocation;
TextView tvLocation;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mCurrentLocation;
String mLastUpdateTime;
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(INTERVAL);
mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "onCreate ...............................");
//show error dialog if GoolglePlayServices not available
if (!isGooglePlayServicesAvailable()) {
finish();
}
createLocationRequest();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
setContentView(R.layout.activity_main);
tvLocation = (TextView) findViewById(R.id.tvLocation);
btnFusedLocation = (Button) findViewById(R.id.btnShowLocation);
btnFusedLocation.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
updateUI();
}
});
}
#Override
public void onStart() {
super.onStart();
if (mGoogleApiClient.isConnected()) {
startLocationUpdates();
Log.d(TAG, "Location update resumed .....................");
}
}
#Override
public void onStop() {
super.onStop();
Log.d(TAG, "onStop fired ..............");
mGoogleApiClient.disconnect();
Log.d(TAG, "isConnected ...............: " + mGoogleApiClient.isConnected());
}
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (ConnectionResult.SUCCESS == status) {
return true;
} else {
GooglePlayServicesUtil.getErrorDialog(status, this, 0).show();
return false;
}
}
#Override
public void onConnected(Bundle bundle) {
Log.d(TAG, "onConnected - isConnected ...............: " + mGoogleApiClient.isConnected());
startLocationUpdates();
}
protected void startLocationUpdates() {
PendingResult<Status> pendingResult = LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
Log.d(TAG, "Location update started ..............: ");
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.d(TAG, "Connection failed: " + connectionResult.toString());
}
#Override
public void onLocationChanged(Location location) {
Log.d(TAG, "Firing onLocationChanged..............................................");
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getTimeInstance().format(new Date());
updateUI();
}
private void updateUI() {
Log.d(TAG, "UI update initiated .............");
if (null != mCurrentLocation) {
String lat = String.valueOf(mCurrentLocation.getLatitude());
String lng = String.valueOf(mCurrentLocation.getLongitude());
tvLocation.setText("At Time: " + mLastUpdateTime + "\n" +
"Latitude: " + lat + "\n" +
"Longitude: " + lng + "\n" +
"Accuracy: " + mCurrentLocation.getAccuracy() + "\n" +
"Provider: " + mCurrentLocation.getProvider());
} else {
Log.d(TAG, "location is null ...............");
}
}
#Override
protected void onPause() {
super.onPause();
stopLocationUpdates();
}
protected void stopLocationUpdates() {
LocationServices.FusedLocationApi.removeLocationUpdates(
mGoogleApiClient, this);
Log.d(TAG, "Location update stopped .......................");
}
#Override
public void onResume() {
super.onResume();
if (mGoogleApiClient.isConnected()) {
startLocationUpdates();
Log.d(TAG, "Location update resumed .....................");
}
}
}
Google play services required:

To get continiuos location update, you can refer to the above provided answers .
But You can also make use of LocationServices which is faster than other approaches and much easy and efficient to get location.
This approach is quit long but kindly follow all the provided steps
So let me provide a brief working :
Add these two dependencies in your gradle app file
implementation 'com.google.android.gms:play-services-maps:17.0.0'
implementation 'com.google.android.gms:play-services-location:17.0.0'
Add these permissions in the manifest file outside applicationtag
Declare variable outside onCreate
private FusedLocationProviderClient fusedLocationClient;
private LocationRequest mLocationRequest;
private LocationCallback mlocationCallback;
private LocationSettingsRequest.Builder builder;
private static final int REQUEST_CHECK_SETTINGS = 102;
Now inside onCreate :
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
fetchLastLocation();
mlocationCallback = new LocationCallback() {
#Override
public void onLocationResult(LocationResult locationResult) {
if (locationResult == null) {
return;
}
for (Location location : locationResult.getLocations()) {
// Update UI with location data
// ...
Log.e("CONTINIOUSLOC: ", location.toString());
}
};
};
mLocationRequest = createLocationRequest();
builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
checkLocationSetting(builder);
No define fetchLastLocation method
private void fetchLastLocation() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// Activity#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 Activity#requestPermissions for more details.
// Toast.makeText(MainActivity.this, "Permission not granted, Kindly allow permission", Toast.LENGTH_LONG).show();
showPermissionAlert();
return;
}
}
fusedLocationClient.getLastLocation()
.addOnSuccessListener(this, new OnSuccessListener() {
#Override
public void onSuccess(Location location) {
// Got last known location. In some rare situations this can be null.
if (location != null) {
// Logic to handle location object
Log.e("LAST LOCATION: ", location.toString()); // You will get your last location here
}
}
});
}
Now define other two method for permission request
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
switch (requestCode) {
case 123: {
// If request is cancelled, the result arrays are empty.
if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
// permission was denied, show alert to explain permission
showPermissionAlert();
}else{
//permission is granted now start a background service
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
fetchLastLocation();
}
}
}
}
}
private void showPermissionAlert(){
if (ActivityCompat.checkSelfPermission(MainHomeActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(MainHomeActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainHomeActivity.this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION}, 123);
}
}
now define createLocationRequest method and checkLocationSetting method :
protected LocationRequest createLocationRequest() {
LocationRequest mLocationRequest = LocationRequest.create();
mLocationRequest.setInterval(30000);
mLocationRequest.setFastestInterval(10000);
mLocationRequest.setSmallestDisplacement(30);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
return mLocationRequest;
}
private void checkLocationSetting(LocationSettingsRequest.Builder builder) {
SettingsClient client = LocationServices.getSettingsClient(this);
Task<LocationSettingsResponse> task = client.checkLocationSettings(builder.build());
task.addOnSuccessListener(this, new OnSuccessListener<LocationSettingsResponse>() {
#Override
public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
// All location settings are satisfied. The client can initialize
// location requests here.
// ...
startLocationUpdates();
return;
}
});
task.addOnFailureListener(this, new OnFailureListener() {
#Override
public void onFailure(#NonNull final Exception e) {
if (e instanceof ResolvableApiException) {
// Location settings are not satisfied, but this can be fixed
AlertDialog.Builder builder1 = new AlertDialog.Builder(mContext);
builder1.setTitle("Continious Location Request");
builder1.setMessage("This request is essential to get location update continiously");
builder1.create();
builder1.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
ResolvableApiException resolvable = (ResolvableApiException) e;
try {
resolvable.startResolutionForResult(MainHomeActivity.this,
REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e1) {
e1.printStackTrace();
}
}
});
builder1.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(mContext, "Location update permission not granted", Toast.LENGTH_LONG).show();
}
});
builder1.show();
}
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if (requestCode == REQUEST_CHECK_SETTINGS) {
if (resultCode == RESULT_OK) {
// All location settings are satisfied. The client can initialize
// location requests here.
startLocationUpdates();
}
else {
checkLocationSetting(builder);
}
}
}
now atlast define startLocationUpdates and stopLocationUpdates method :
public void startLocationUpdates() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// Activity#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 Activity#requestPermissions for more details.
return;
}
}
fusedLocationClient.requestLocationUpdates(mLocationRequest,
mlocationCallback,
null /* Looper */);
}
private void stopLocationUpdates() {
fusedLocationClient.removeLocationUpdates(mlocationCallback);
}
Note : Replace context with your class context and call stopLocationUpdates() inside onDestroy method of your class
Note : For any futher information or doubt you can refer to :
https://developer.android.com/training/location/retrieve-current
https://developer.android.com/training/location/change-location-settings
https://developer.android.com/training/location/receive-location-updates
You will get your location in Logcat.
Hope this will hope you or somebody else !

I believe rather than reinventing the wheel, you can use one of the third party libraries that are easy to implement and in this case, battery efficient. One of the library I found is SmartLocation. You can add the following dependency in your build.gradle (app) to start using the library.
compile 'io.nlopez.smartlocation:library:3.2.9'
After adding the dependency, you should rebuild the project to get the references.
As an example you can try the following code in your Activity.
Button start_btn=(Button)findViewById(R.id.start_location_streaming);
Context context = start_btn.getContext();
Handler handler = new Handler();
start_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SmartLocation.with(context).location().start(locationListener);
}
});
OnLocationUpdatedListener locationListener = new OnLocationUpdatedListener({
#Override
public void onLocationUpdated(Location location) {
double lat = location.getLatitude();
double lng = location.getLongitude();
handler.postDelayed(locationRunnable,8000);
}
});
Runnable locationRunnable = new Runnable({
#Override
public void run() {
SmartLocation.with(context).location().start(locationListener);
}
});
You can stop location tracking in onStop() method
#Override
public void onStop() {
SmartLocation.with(context).location().stop();
super.onStop();
}
SmartLocation library will give you more than what is expected, just try that once.
Note: Make sure your application does have ACCESS_FINE_LOCATION and ACCESS_COARSE_LOCATION (both) to have accurate results. Don't forget to ask for permissions at runtime for Android 6.0 and above.

You should use android services, rather than the app itself. This way you will achieve to run code continuously in the background and you will receive the location even if the app closes.
https://www.tutorialspoint.com/android/android_services.htm

How to optimise battery with FUSED LOCATION API - Android

Hi I am facing below issue/problem with location API in android
Battery consumption is high as 30% - 40%, which is causing lot of battery drain.
Location icon in status bar is always ON even when app is closed and when app is uninstalled it goes off automatically.
Requirement:
Need user location when app is opened.
I need to have users location even when app is not opened or not in use based on distance - need user location in background.
Approach:
with GPS
API used FUSED LOCATION API with pending intent.
LocationManager - to check state of GPS On/Off.
Code walkthru:
in OnCreate i m getting location manager instance - getting instance of location manager.
checking is GPS enabled or is network state available else show dialog to enable location: CODE: -
// get GPS state.
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (isGPSLocationEnabled(locationManager)) {
buildGooleLocationApiClient();
} else if (isNetworkLocationEnabled(locationManager)) {
buildGooleLocationApiClient();
} else {
showAlert();
}
Code for goolgeLocationAPiClient: In this method I am checking android version, requesting permission and enabling services
private void buildGooleLocationApiClient() {
if (Build.VERSION.SDK_INT >= 23) {
int isFineLocationPermission = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION);
int isCoarseLocationPermission = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION);
if (isFineLocationPermission == PackageManager.PERMISSION_DENIED || isCoarseLocationPermission == PackageManager.PERMISSION_DENIED) {
requestPermission();
} else {
checkGoogleLocationApiClient();
}
} else {
checkGoogleLocationApiClient();
}
}
Building GoogleAPI Client:
private void checkGoogleLocationApiClient() {
try {
if (mGoogleApiClient != null) {
if (mGoogleApiClient.isConnected()) {
getMyLocationCampaigns();
} else {
mGoogleApiClient.connect();
}
} else {
buildGoogleApiClient();
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void getMyLocationCampaigns() {
if (mCurrentLocation != null) {
getData(mCurrentLocation.getLatitude()+"",mCurrentLocation.getLongitude()+"");
} else {
try {
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
getData(mCurrentLocation.getLatitude()+"",mCurrentLocation.getLongitude()+"");
} catch (SecurityException ex) {
ex.printStackTrace();
getData("","");
}
}
}
private synchronized void buildGoogleApiClient() {
try {
Log.i(TAG, "activity Building GoogleApiClient===");
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
} catch (Exception e) {
e.printStackTrace();
getData("","");
}
}
private void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(60 * 60 * 1000);
mLocationRequest.setFastestInterval(60 * 1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
mLocationRequest.setSmallestDisplacement(100);
connectGoogleApiClient();
}
private void connectGoogleApiClient() {
if (mGoogleApiClient != null) {
if (!mGoogleApiClient.isConnected())
mGoogleApiClient.connect();
}
}
#Override
public void onLocationChanged(Location location) {
mCurrentLocation = location;
}
#Override
public void onConnected(#Nullable Bundle bundle) {
if (mCurrentLocation == null) {
try {
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mCurrentLocation != null) {
// MyAPICALL getData(mCurrentLocation.getLatitude()+"",mCurrentLocation.getLongitude()+"");
} else {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest, this);
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mCurrentLocation == null) {
if (locationManager != null) {
String provider = Utils.getUserLastLocation(locationManager);
if (provider != null) {
try {
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
getData(location.getLatitude() + "", location.getLongitude() + "");
} else {
getData("", "");
}
} catch (SecurityException e) {
e.printStackTrace();
}
}
}
} else {
getData(mCurrentLocation.getLatitude()+"",mCurrentLocation.getLongitude()+"");
}
}
} catch (SecurityException ex) {
ex.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
getData("","");
}
}
}
Method to getlocation in background with pending intent
private void startLocationUpdates() {
try {
Intent receiverIntentService = new Intent(this, LocationIntentService.class);
PendingIntent pendingIntent = PendingIntent.getService(this, 1, receiverIntentService, 0);
if (mGoogleApiClient != null) {
if (mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, pendingIntent);
}
}
} catch (SecurityException se) {
se.printStackTrace();
}
}
BroadCastReceiver: In case if device is restarted:
public class LocationBroadcastReceiver extends BroadcastReceiver implements
GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener, LocationListener {
Context context;
protected GoogleApiClient mGoogleApiClient;
protected LocationRequest mLocationRequest;
protected Location mCurrentLocation;
public static Boolean mRequestingLocationUpdates = false;
SharedPreferences checkUserStatus;
public LocationBroadcastReceiver() {
}
#Override
public void onReceive(Context context, Intent intent) {
// TODO: This method is called when the BroadcastReceiver is receiving
// an Intent broadcast.
try {
this.context = context;
checkUserStatus = context.getSharedPreferences(Params.LOGIN_DETAILS_PREFERENCE, 0);
String isUserLogedIn = checkUserStatus.getString(Params.TOKEN,"");
// if user is still logged in then only trigger background service
if (!isUserLogedIn.equals("")) {
buildGoogleApiClient();
if (mGoogleApiClient != null) {
if (mGoogleApiClient.isConnected() && mRequestingLocationUpdates) {
startLocationUpdates();
} else {
buildGoogleApiClient();
}
} else {
buildGoogleApiClient();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void onConnected(Bundle bundle) {
startLocationUpdates();
}
#Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i("Broadcast receiver", "Connection failed: ConnectionResult.getErrorCode() = " + connectionResult.getErrorCode());
}
#Override
public void onLocationChanged(Location location) {
mCurrentLocation = location;
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(context)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
}
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(60 * 60 * 1000);
mLocationRequest.setFastestInterval(60 * 1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
mLocationRequest.setSmallestDisplacement(100);
}
protected void startLocationUpdates() {
try {
Intent receiverIntentService = new Intent(context,LocationIntentService.class);
PendingIntent pendingIntent = PendingIntent.getService(context,1,receiverIntentService,0);
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, pendingIntent);
}catch (SecurityException se) {
se.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
My intent service class: to get user updated location and make an API call
public class LocationIntentService extends IntentService {
Context context;
Bitmap myBitmap;
URL url;
SharedPreferences.Editor mMyLastLocationHolder;
SharedPreferences mMyLastLocation;
SharedPreferences checkUserStatus;
public LocationIntentService() {
super("LocationIntentService");
}
#Override
protected void onHandleIntent(Intent intent) {
if (intent != null) {
Bundle bundle = intent.getExtras();
if (bundle != null) {
Location location = bundle.getParcelable("com.google.android.location.LOCATION");
if (location != null) {
context = getApplicationContext();
// API call to server
updateAPI(location.getLatitude()+"",location.getLongitude()+"");
Log.v("TAG LOCATION ", " ==== " + location.getLatitude() + " - " + location.getLongitude() + " ==== ");
Log.v("TAG LOCATION ", " ==== calling my-campaigns near me ========");
}
}
}
}
/**
* Handle action Foo in the provided background thread with the provided
* parameters.
*/
private void handleActionFoo(String param1, String param2) {
// TODO: Handle action Foo
throw new UnsupportedOperationException("Not yet implemented");
}
/**
* Handle action Baz in the provided background thread with the provided
* parameters.
*/
private void handleActionBaz(String param1, String param2) {
// TODO: Handle action Baz
throw new UnsupportedOperationException("Not yet implemented");
}
}

I hope this could help you finding the best solution/approach.
Personally prefer to use GoogleApiClient and LocationRequest with a certain priority and interval.
Write a service that implements the following interfaces:
GoogleApiClient.ConnectionCallbacks
GoogleApiClient.OnConnectionFailedListener
LocationListener
public class PositionService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {}
Use GoogleApiClient and LocationRequest classes.
Into the onCreate() instantiate a GoogleApiClient object, a LocationRequest object and make mGoogleApiClient connect.
public void onCreate() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY)
.setInterval(mInterval).setFastestInterval(mFastInterval);
mGoogleApiClient.connect();
}
Into the onDestroy() method make the mGoogleApiClient disconnect
#Override
public void onDestroy() {
mGoogleApiClient.disconnect();
}
Now implement the interfaces
#Override
public void onLocationChanged(Location location) {
Log.d("NewLocation", location.toString());
}
#Override
public void onConnected(#Nullable Bundle bundle) throws SecurityException {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
Now GoogleApiClient, based on the settings of the LocationRequest, will inform you of the position calling the onLocationChanged() callback
Your business logic should be placed into the onLocationChanged() method. Just pick a good interval timings and priority for the LocationRequest. (see documentation)
Please refer to the official documentation about location strategies, my solution is based on that.
I'm used to get the service started in Foreground to prevent unexpected behaviour by the operating system (e.g. service being killed)

This will only explain you the better logic
Instead of long running service or IntentService Just use Firebase JobDispatcher or Any 3rd Party lib Jobscheduler API such that you move all your location update code to Jobscheduler (https://github.com/googlesamples/android-JobScheduler/blob/master/Application/src/main/java/com/example/android/jobscheduler/service/MyJobService.java)
Start the Job as per your location update interval, configure or alter the Job as per your requirement !! it's really a better solution compare to long running service !!!(You can use eventBus or RxBus for location update in Activity or fragment !!)
Tips: every time Job starts with firing location update before Job closes setup up some system delay of 3seconds or more because some times Googleapiclient takes some more time to update the new updated GPS time after the delay you can close Googleapiclient all unwanted call backs with the running JobService. control the Job configuration smartly with Google Awareness Api or Google Fit API by detecting the User Activity!
All in one Job Jobscheduler Lib: https://github.com/evernote/android-job
P.S: code will be updated very soon

The documentation states
Activities should strongly consider removing all location request when
entering the background (for example at onPause()), or at least swap
the request to a larger interval and lower quality.
therefore what I did when I faced a similar issue was:
I created two location requests, the first had a priority of PRIORITY_HIGH_ACCURACY and an interval of 1 min while the second one had a priority of PRIORITY_LOW_POWER with an internal of 1 hour and a smallest displacement of 1km
When the app is launched I use the first location request (high priority) to get more frequent and accurate location updates
When the app enters the background I swap to the second location request (low priority) to eliminate the battery usage while getting less frequent location updates
(Optional) You can also get the battery percentage when the app is launched and choose according to a limit (eg. 15%) which location request you might want to use when the app is in the foreground
These steps helped me reduce the battery usage of my app from >30% to <3%.

Run time permission not working access fine location Marshmallow

I am working on project where i need to access user's gps location. Due to android 6, I need run time permissions. I tried to do it , first time it asked for gps location on activity starts, but without giving me location. I am still not getting any location coordinates. Hope someone can help ?
public class benzinpriser_akt extends AppCompatActivity implements OnItemClickListener {
public static final int MY_PERMISSION_REQUEST_GPS_LOCATION = 1 ;
LocationManager locationManager;
LocationListener locationListener;
Location currentLocation;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location provider.
currentLocation = location;
System.out.println("Current Location "+ currentLocation );
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public void onProviderEnabled(String provider) {
}
public void onProviderDisabled(String provider) {
}
};
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
} else {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSION_REQUEST_GPS_LOCATION);
}
}
// Some other code regarding listview and fetching data from database
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSION_REQUEST_GPS_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// contacts-related task you need to do.
System.out.println("Permission Granted");
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}

First of all add theese two lines to your build.gradle:
compile 'com.google.android.gms:play-services-maps:8.4.0'
compile 'com.google.android.gms:play-services-location:8.4.0'
Then in your activity you must implement like that :
public class benzinpriser_akt extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,LocationListener, android.location.LocationListener {
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
private int UPDATE_INTERVAL = 20000; // 20 sec
private int FASTEST_INTERVAL = 10000; // 10 sec
private int DISPLACEMENT = 50; // get location per 50 meter change
protected final String TAG = "Location Service";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(yourlayout);
//build google api client
buildGoogleApiClient();
} //oncreate end
protected synchronized void buildGoogleApiClient() {
Log.v(TAG, "google client building");
if (GooglePlayServicesUtil.isGooglePlayServicesAvailable(this) == ConnectionResult.SUCCESS) {
mGoogleApiClient = new GoogleApiClient.Builder(thisService)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API).build();
if (!mGoogleApiClient.isConnected() || !mGoogleApiClient.isConnecting()) {
mGoogleApiClient.connect();
}
startListenLocation();
} else {
Log.e(TAG, "unable to connect to google play services.");
}
}
public void createLocationRequestWithDialog(final Activity activity){
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
mLocationRequest.setInterval(UPDATE_INTERVAL);
mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(mLocationRequest);
//**************************
builder.setAlwaysShow(true); //this is the key ingredient
//**************************
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
#Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location
// requests here.
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user
// a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(
activity, 1000);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
break;
}
}
});
}
public void checkGpsPermission(Activity activity) {
if (ContextCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(activity,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
PERMISSION_ACCESS_GPS);
}
else
{
createLocationRequestWithDialog(activity);
}
}
protected void startListenLocation() {
if (ActivityCompat.checkSelfPermission(thisService, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
//no permission , create a notification and want permission
NotificationManager notificationManager = (NotificationManager)
getSystemService(NOTIFICATION_SERVICE);
Notification n = new Notification.Builder(thisService)
.setContentTitle(" notification")
.setContentText("there is no permission about using gps services, please give location permissions")
.setSmallIcon(R.drawable.logo)
.setAutoCancel(true)
.build();
notificationManager.notify((int)System.currentTimeMillis(), n);
} else {
// permission has been granted, continue as usual
if(mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
}
#Override
public void onConnected(#Nullable Bundle bundle) {
if (mGoogleApiClient.isConnected() && mLastLocation != null) {
createLocationRequestWithDialog();
startListenLocation();
}
}
#Override
public void onConnectionSuspended(int i) {
mGoogleApiClient.connect();
}
//TODO add other override methods , onresume, onproviderenabled etc...
}//class end
Battery drain :
/*
Priority update interval Battery drain per hour (%) Accuracy
HIGH_ACCURACY 5 seconds 7.25% ~10 meters
BALANCED_POWER 20 seconds 0.6% ~40 meters
NO_POWER N/A small ~1 mile
*/

Samsung Note 2 can't reach onLocationChanged()

It works on most devices except Galaxy Note 2. It connects to Google Client, but can't reach onLocationChanged() that implements LocationListener. Anyone has any idea what it causes and why only on this device?
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
if (mLastLocation != null) {
lat = mLastLocation.getLatitude();
lng = mLastLocation.getLongitude();
Toast.makeText(getApplicationContext(), String.valueOf(lat) + "/" + String.valueOf(lng), Toast.LENGTH_LONG).show();
serverUrl = "http://(my server)/offers?lat=" + String.valueOf(mLastLocation.getLatitude())
+ "&lng=" + String.valueOf(mLastLocation.getLongitude()) + "&distance=1";
// save
makeTag(serverUrl);
// after getting location data - unregister listener
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, mFusedLocationCallback);
new GetBackgroundUpdate().execute();
} else {
// get data from server and update GridView
new GetBackgroundUpdate().execute();
Toast.makeText(getApplicationContext(), R.string.no_location_detected, Toast.LENGTH_LONG).show();
}
/**
Location methods
*/
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
/**
* Runs when a GoogleApiClient object successfully connects.
*/
#Override
public void onConnected(Bundle connectionHint) {
// Provides a simple way of getting a device's location and is well suited for
// applications that do not require a fine-grained location and that do not need location
// updates. Gets the best and most recent location currently available, which may be null
// in rare cases when a location is not available.
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(500);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mFusedLocationCallback);
}
#Override
public void onConnectionFailed(ConnectionResult result) {
// Refer to the javadoc for ConnectionResult to see what error codes might be returned in
// onConnectionFailed.
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode());
if (mResolvingError) {
// Already attempting to resolve an error.
return;
} else if (result.hasResolution()) {
try {
mResolvingError = true;
result.startResolutionForResult(this, REQUEST_RESOLVE_ERROR);
} catch (IntentSender.SendIntentException e) {
// There was an error with the resolution intent. Try again.
mGoogleApiClient.connect();
}
} else {
// Show dialog using GooglePlayServicesUtil.getErrorDialog()
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(String.valueOf(result.getErrorCode()))
.setCancelable(false)
.setNegativeButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int id) {
dialog.cancel();
}
});
final AlertDialog alert = builder.create();
alert.show();
mResolvingError = true;
}
//new GetBackgroundUpdate().execute();
}
#Override
public void onConnectionSuspended(int cause) {
// The connection to Google Play services was lost for some reason. We call connect() to
// attempt to re-establish the connection.
Log.i(TAG, "Connection suspended");
mGoogleApiClient.connect();
}
#Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
#Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient.isConnected()) {
mGoogleApiClient.disconnect();
}
}

Edit: From the line in your comment where the NullPointerException is happening, just ensure that mLastLocation is not null.
if (mLastLocation != null){
address = server + String.valueOf(mLastLocation.getLatitude()) + "&lng=" + String.valueOf(mLastLocation.getLongitude()) + "&distance=" + distance;
}
Another thing to note is that you should always ensure that mGoogleApiClient is not null and connected before using it.
if (mGoogleApiClient != null && mGoogleApiClient.isConnected()){
//..... use mGoogleApiClient.....
}
See documentation here
You should also add a check to see if Google Play Services are available, as sometimes the version available on the device is below the version that you compile your app with. There is a dialog that you can show if that is the case.
Below is how to check if Google Play Services are available.
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (ConnectionResult.SUCCESS == status) {
return true;
} else {
GooglePlayServicesUtil.getErrorDialog(status, this, 0).show();
return false;
}
}
Note that getLastLocation() has a high tendency to return null, so a good approach would be to register a location listener if you get a null value from the first call to getLastLocation().
See this post: LocationClient getLastLocation() return null
Here is a guide for how to register a LocationListener:
Creating a listener:
LocationCallback mFusedLocationCallback = new LocationCallback();
Class definition:
private class LocationCallback implements LocationListener {
public LocationCallback() {
}
#Override
public void onLocationChanged(Location location) {
mLastLocation = location;
lat = String.valueOf(mLastLocation.getLatitude());
lng = String.valueOf(mLastLocation.getLongitude());
}
};
Then just register the LocationListener :
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(minTime);
mLocationRequest.setFastestInterval(fastestTime);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
mLocationRequest.setSmallestDisplacement(distanceThreshold);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mFusedLocationCallback);
Edit: You should wait for the API to be connected before you register for location callbacks, it should be something like this:
/**
* Runs when a GoogleApiClient object successfully connects.
*/
#Override
public void onConnected(Bundle connectionHint) {
// Provides a simple way of getting a device's location and is well suited for
// applications that do not require a fine-grained location and that do not need location
// updates. Gets the best and most recent location currently available, which may be null
// in rare cases when a location is not available.
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
lat = String.valueOf(mLastLocation.getLatitude());
lng = String.valueOf(mLastLocation.getLongitude());
} else {
Toast.makeText(this, R.string.no_location_detected, Toast.LENGTH_LONG).show();
}
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(500);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mFusedLocationCallback);
}
Documentation: for requestLocationUpdates.... and LocationRequest.
One last thing, make sure that you have this in your AndroidManifest.xml inside the application tag:
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />