CODEWITHSUNDEEP
androidgoogle-play-servicesandroid-8.0-oreoandroid-locationandroid-fusedlocation
Maximus
Maximus

Reputation: 199

Location Manager always returns false for gps enabled check in oreo+ devices in android

LocationManager is always returning false in oreo and above devices when i check if gps is on or not, even when i turn it on, it still returns false. How do i check if gps is on in oreo and and above devices?

Heres my code:

Location manager;

  manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {

           //this if check is always false even when gps is on    
 startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
            }


void onRestart(){
if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {

         //still returning false when i come back to app from settings screen after turning on gps, but it returns true in android Nougat devices perfectly
            }
}

Upvotes: 0

Views: 1706

Answers (2)

Furkan Yurdakul
Furkan Yurdakul

Reputation: 3157

There is another possibility that is not really related to the device being Oreo or not, but in the settings activity you redirect via startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)); you may not enabled the GPS provider itself. Also since you said Oreo and above I think you have already given the permission of android.manifest.Permission.ACCESS_FINE_LOCATION both in runtime and in manifest.

If you noticed, there are 3 providers: GPS_PROVIDER, NETWORK_PROVIDER and PASSIVE_PROVIDER. You are using GPS_PROVIDER to fetch your location, but if it is not enabled via the settings, it might return false. Only network provider might have been selected while you're trying this.

Here is a picture of what I'm talking about (from HUAWEI-P20 Lite - Android 8.0.0 API 26):

Click if not visible

Upvotes: 0

Mark Kazakov
Mark Kazakov

Reputation: 1116

Please use the fused location client
Documentation
It's battery efficient and very easy to work with and is pretty much the standard in location based apps.
A youtube tutorial

An example from one of my apps: 

@Override
public void onStart() {
    super.onStart();
    fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(getActivity());
}

@Override
public void onMapReady(GoogleMap googleMap) {
    if (googleMap == null) return;// GUARD
    map = googleMap;
    getDeviceLocationUpdates();
}  



/**
 * Start listening to location changes
 */
private void getDeviceLocationUpdates() {
    if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        return;
    }
    locationRequest = new LocationRequest();

    locationRequest.setInterval(Constants.DRIVING_TIME_INTERVAL);
    locationRequest.setFastestInterval(Constants.DRIVING_TIME_INTERVAL);
    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

    fusedLocationProviderClient.requestLocationUpdates(locationRequest, locationCallback, Looper.myLooper());

}  



LocationCallback locationCallback = new LocationCallback() {
    @Override
    public void onLocationResult(LocationResult locationResult) {
        List<Location> locationList = locationResult.getLocations();
        if (locationList.size() > 0) {
            //The last location in the list is the newest
            Location location = locationList.get(locationList.size() - 1);
            Log.i(TAG, "Location: " + location.getLatitude() + " " + location.getLongitude());
            lastLocation = location;

            if (currentLocationMarker != null) {
                currentLocationMarker.remove();
            }

            if (mapPin == null) {
                mapPin = GraphicUtils.resizeImage(getActivity(), Constants.MAP_MARKER_IMAGE_NAME, 100, 100);
            }

            LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
            placeCurrentLocationMarker(latLng);

            //move map camera
            map.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, Constants.DEFAULT_ZOOM));
        }
    }
};  



/**
 * Places a marker with user image on the map on given location
 *
 * @param location GPS Location
 */
private void placeCurrentLocationMarker(LatLng location) {
    Bitmap bitmap = GraphicUtils.createContactBitmap(getActivity(), BitmapFactory.decodeResource(
            getActivity().getResources(),
            Integer.valueOf(((MainActivity) getActivity()).currentUser.getImgUrl())));
    MarkerOptions markerOptions = new MarkerOptions();
    markerOptions.position(location);
    markerOptions.title(getString(R.string.you_are_here));
    markerOptions.icon((bitmap == null) ?
            BitmapDescriptorFactory.fromBitmap(mapPin) :
            BitmapDescriptorFactory.fromBitmap(bitmap));
    currentLocationMarker = map.addMarker(markerOptions);
}

Upvotes: 1

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