App Crashes While Requesting Location Updates With The Help Of Fused Location

I was requesting the location updates with the help of LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, locationListener); But As I trie

Solution 1:

You have requested location updates with the help of locationListener which you have not initialized. You can solve the problem either by initializing a location listener or by changing locationListener to this in the given statement of your code.

LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, locationListener);

to:

LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);

Solution 2:

Implementation of fused location service has changed, you can do that without the GoogleApiClient. You can try like this,

Add required location library to build.grade

implementation 'com.google.android.gms:play-services-location:15.0.0'

Add required permissions to manifest

<uses-permissionandroid:name="android.permission.ACCESS_COARSE_LOCATION"/><uses-permissionandroid:name="android.permission.ACCESS_FINE_LOCATION"/>

Inside Welcome activity

publicclassWelcomeextendsAppCompatActivityimplementsOnMapReadyCallback {

    ...
    ...

    privateFusedLocationProviderClient mFusedLocationClient;

    privateLocationRequest mLocationRequest = LocationRequest.create()
            .setInterval(1000)
            .setFastestInterval(500)
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

    privateLocationCallback mLocationCallback = newLocationCallback() {
        @OverridepublicvoidonLocationResult(LocationResult result) {
            super.onLocationResult(result);
            for (Location location : result.getLocations())
                if (location != null) {
                    displayLocation(result.getLastLocation());
                    break;
                }
        }
    };

    ...
    ...

    @OverrideprotectedvoidonCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome);

        ...
        ...

        // Get fussed location instance
        mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);

        ...
        ...
    }

    @OverridepublicvoidonMapReady(GoogleMap googleMap) {

        ...
        ...

        // Check if location permission is grantedif (!hasLocationPermission()) {
            // Request location permission
        } else {
            // Get the last known locationstartLocationUpdate();
        }
    }

    privatevoidstartLocationUpdate() {
        try {
            mFusedLocationClient.getLastLocation().addOnSuccessListener(newOnSuccessListener<Location>() {
                @OverridepublicvoidonSuccess(Location location) {
                    if (location != null) {
                        displayLocation(location);
                    } else {
                    mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, null);
                    }
                }
            });
        } catch (SecurityException ex) {
            ex.printStackTrace();
        }
    }

    privatebooleanhasLocationPermission() {
        returnActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
            != PackageManager.PERMISSION_GRANTED
            && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
            != PackageManager.PERMISSION_GRANTED;
    }

    privatevoidstopLocationUpdate() {
        mFusedLocationClient.removeLocationUpdates(mLocationCallback);
    }

    privatevoiddisplayLocation(Location location) {
        // do something
        ...
        ...
    }
}