CODEWITHSUNDEEP
androidandroid-gpsfusedlocationproviderclient
AruN
AruN

Reputation: 191

How do i fix the getting null location value from FusedLocationProviderClient in android

I have been trying to get current location data using FusedLocationProviderClient in android. I always get null on the location variable, How do i fix it?

I have tried to follow the steps from android developer website for FusedLocationProviderClient, It didn't help.

mFusedLocationClient = LocationServices.getFusedLocationProviderClient(context);

    if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        Toast.makeText(context, "Location permission Required", Toast.LENGTH_SHORT).show();
    } else {
        mFusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
            @Override
            public void onSuccess(Location location) {
                if (location != null) {
                    mLocation = location;
                    Log.d(TAG, "getLocation: "+mLocation.getLatitude()+","+mLocation.getLongitude());

                }

                    locationRequest = LocationRequest.create();
                    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
                    locationRequest.setInterval(20 * 1000);
                    locationCallback = new LocationCallback() {
                        @Override
                        public void onLocationResult(LocationResult locationResult) {
                            super.onLocationResult(locationResult);
                            if (locationResult == null) {
                                return;
                            } else {
                                for (Location location : locationResult.getLocations()) {
                                    if (location != null) {
                                        mLocation = location;
                                        Log.d(TAG, "getLocation: "+mLocation.getLatitude()+","+mLocation.getLongitude());

                                    }
                                }
                            }
                        }
                    };

                if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    Toast.makeText(context, "No Location Permission", Toast.LENGTH_SHORT).show();
                }
                else {
                    mFusedLocationClient.requestLocationUpdates(locationRequest, locationCallback, Looper.myLooper());
                }}
        });

I expect this code to return current location data.

Upvotes: 0

Views: 1742

Answers (2)

iCantC
iCantC

Reputation: 3190

The getLastLocation() returns null if the Android System doesn't have a knowledge about its last location.To provide last location to the System you can try one of the following things:

  1. Before opening your app, open Google Maps and let the device get the current location.After that you can return to your app.

  2. The Location service in Android provide 3 modes.Check-up the High Accuracy mode. Go to Setting -> Location -> High Accuracy Mode.

Upvotes: 0

Gabe Sechan
Gabe Sechan

Reputation: 93708

There's nothing to fix, this is expected behavior. getLastLocation returns the last location IF THE SYSTEM KNOWS IT. It almost never knows it. So it will almost always return null. If you want to get an assured location, use requestLocationUpdates. But you can never rely on getLastLocation working, and even when it does the data may be old. It should really only be used in very limited circumstances.

Upvotes: 1

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