Location : LocationCallback() is never triggered

Question

I am making an app using fusedLocationProviderClient to locate the user.

First, I try to retrieve last known location and then, if it isn't available I am making a request location.

Here is the issue, when I run the app, it doesn't trigger onLocationResult() method from the Callback.

So here's the logic of the code :

• I tried to get the last known location, if it returns null, the method "checkIfCurrentLocationSettingsSatisfied" is summoned.

• This method verifies if the phone's location is enabled, if not an other activity is launched and asks the user to allow location. The result code is checked on the "onActivityResult" method.

• Furthermore, the location request is initiated. After that, the location Callback is also initiated.

• Last of all, the fusedLocationProviderClient variable is set with the location request and the callback.

When the phone has a last known location, there is no problem. It's only when it tries to get a location.

In the manifest, I gave the " android.permission.ACCESS_FINE_LOCATION " permission. I found a topic that has an issue like mine but I tried every solutions proposed and it hasn't resolving my issue. Here is the topic : LocationCallback not getting called

Here is the code :

@Override
public void onMapReady(GoogleMap googleMap) {
    this.googleMap = googleMap;
    googleMap.setMyLocationEnabled(true);
    googleMap.setOnMapLoadedCallback(this);
    googleMap.getUiSettings().setMyLocationButtonEnabled(true);
    googleMap.setOnMarkerClickListener(this);
    getDeviceLocation();
}

private void getDeviceLocation(){
    fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(getContext());
    try{
        if(mLocationPermissionGranted){
            Task location = fusedLocationProviderClient.getLastLocation();
            location.addOnCompleteListener(task -> {
                if(task.isSuccessful()){
                    Location currentLocation = (Location) task.getResult();
                    if(currentLocation == null){
                        builder = new LocationSettingsRequest.Builder();
                        checkIfCurrentLocationSettingsSatisfied();
                    }else{
                        moveCamera(new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude()));
                    }
                }else{
                    Toast.makeText(getContext(), R.string.couldnt_get_location, Toast.LENGTH_SHORT).show();
                }
            });
        }
    }catch (SecurityException e){
        e.printStackTrace();
    }
}

private void moveCamera(LatLng latLng){
    googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, DEFAULT_ZOOM));
}

public void checkIfCurrentLocationSettingsSatisfied(){
    SettingsClient client = LocationServices.getSettingsClient(getActivity());
    Task<LocationSettingsResponse> task = client.checkLocationSettings(builder.build());
    task.addOnSuccessListener(locationSettingsResponse -> {
        createLocationRequest();
    });

    task.addOnFailureListener(getActivity(), e -> {
        if (e instanceof ResolvableApiException) {
            try {
                ResolvableApiException resolvable = (ResolvableApiException) e;
                startIntentSenderForResult(resolvable.getResolution().getIntentSender(), REQUEST_CHECK_SETTINGS, null, 0, 0, 0, null);
            } catch (IntentSender.SendIntentException sendEx) {
                sendEx.printStackTrace();
            }
        }
    });
}

private void createLocationRequest() {
    locationRequest = LocationRequest.create();
    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    locationRequest.setInterval(5000);
    locationRequest.setFastestInterval(2000);
    initializeLocationCallback();
}

private void initializeLocationCallback() {
    locationCallback = new LocationCallback() {
        @Override
        public void onLocationResult(LocationResult locationResult) {
            if (locationResult == null) {
                Toast.makeText(getContext(), R.string.couldnt_get_location, Toast.LENGTH_SHORT).show();
                return;
            }
            for (Location location : locationResult.getLocations()) {
                // It never gets here
                moveCamera(new LatLng(location.getLatitude(),location.getLongitude()));
            }
        }
    };
    startLocationUpdates();
}

private void startLocationUpdates() {
    fusedLocationProviderClient.requestLocationUpdates(locationRequest,
            locationCallback,
            Looper.getMainLooper());
}