Tag: never

The onMapReady() contains code (mFusedLocationAPI-requestLcoationUpdates) which should call the LocationCallback() function that updates the current location. But it seems that the LocationCallback() never gets called at all.

All the permissions required have been given before calls to the Location related methods. The onMapReady() contains code to call the LocationCallback() to update the latest Location but we get a null instead.

public class CustomerMapActivity extends FragmentActivity implements OnMapReadyCallback{

private GoogleMap mMap; Location mlastLocation; LocationRequest mLocationRequest; private Button mRequest; private FusedLocationProviderClient mFusedLocationClient;  @Override protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setContentView(R.layout.activity_customer_map);      mFusedLocationClient = LocationServices.getFusedLocationProviderClient(CustomerMapActivity.this);      SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);     mapFragment.getMapAsync(this);       mRequest = (Button) findViewById(R.id.request);     mRequest.setOnClickListener(new View.OnClickListener(){          @Override         public void onClick(View v){                      checkLocationPermission();                     mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, Looper.myLooper());                     String userid = FirebaseAuth.getInstance().getCurrentUser().getUid();  //Getting the userid from FireBase and will be passed to GeoFire's setLocation method                      DatabaseReference ref = FirebaseDatabase.getInstance().getReference("customerRequests");   // Database reference passed to GeoFire                     GeoFire geoFire = new GeoFire(ref);                     geoFire.setLocation(userid, new GeoLocation(mlastLocation.getLatitude(), mlastLocation.getLongitude()));                  }          }     });  }  @Override public void onMapReady(GoogleMap googleMap) {     mMap = googleMap;      mLocationRequest = new LocationRequest();     mLocationRequest.setInterval(1000);     mLocationRequest.setFastestInterval(1000);     mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);        if(android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){         if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {          }else{             checkLocationPermission();         }     }        //            mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, Looper.myLooper());          mMap.setMyLocationEnabled(true);  }    LocationCallback mLocationCallback = new LocationCallback(){     @Override     public void onLocationResult(LocationResult locationResult) {         for(Location location : locationResult.getLocations()){                 Toast.makeText(CustomerMapActivity.this,"CallbackDoe",Toast.LENGTH_SHORT).show();                 ActivityCompat.requestPermissions(CustomerMapActivity.this, new String[] {Manifest.permission.ACCESS_FINE_LOCATION},1);             if(getApplicationContext() != null) {                 mlastLocation = location;                 LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());     //Updates the Location of the USER                 mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));                  mMap.animateCamera(CameraUpdateFactory.zoomTo(11));               }         }     } }; 

}

I expected the onMapReady() to call the LocationCallback() to update the Current Location to the Variable mLastLocation which is used to update it on FireBAse Database using the geoFire.setLocation(userid, new GeoLocation(mlastLocation.getLatitude(), mlastLocation.getLongitude())); at the mRequest.SetOnClickListener() But i get a null “mLastLocation” instead.