Debug.java

public class DebugScreen extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {


    private GoogleApiClient googleApiClient;
    private LocationRequest locationRequest;
    private FusedLocationProviderApi fusedLocationProviderApi = LocationServices.FusedLocationApi;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_debug_screen);
        Button wpBttn = (Button) findViewById(R.id.wpNtfy);

        googleApiClient = new GoogleApiClient.Builder(DebugScreen.this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(DebugScreen.this)
                .addOnConnectionFailedListener(DebugScreen.this)
                .build();
        googleApiClient.connect();
        locationRequest = new LocationRequest();

        locationRequest.setInterval(1000);
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    }

    @Override
    public void onConnected(@Nullable Bundle bundle) {
        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            fusedLocationProviderApi.requestLocationUpdates(googleApiClient, locationRequest, this);
            return;
        }
        fusedLocationProviderApi.getLastLocation(googleApiClient);
        Log.d("GPS Connected","Location Services API Connected");
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

    }

    @Override
    public void onLocationChanged(Location location) {
        Log.d("Location Changed",String.valueOf(location.getLatitude()));
    }
}