Ich versuche aber manchmal Standortänderungen anzuhörenonLocationChanged Rückruf wird nie aufgerufen undgetLastLocation kehrt zurücknull, während Google Maps immer einwandfrei funktioniert.

Hinweis

Wenn ich mein Gerät neu starte, funktioniert der Ortungsdienst nur für ca. 2 Tage. danach weder meine app nochdas SDK-Beispiel funktioniert, solange Google Maps noch funktioniert.

Dies ist mein Service-Code:

public class VisitService extends Service implements
        GooglePlayServicesClient.ConnectionCallbacks,
        GooglePlayServicesClient.OnConnectionFailedListener, 
        LocationListener {

    private final IBinder mBinder = new VisitBinder();


    // A request to connect to Location Services
    private LocationRequest mLocationRequest;

    // Stores the current instantiation of the location client in this object
    private LocationClient mLocationClient;


    private boolean mLocationServiceConnected = false;

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        initLocation();
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public IBinder onBind(Intent intent) {
        initLocation();
        return mBinder;
    }

    public void startVisit() {
        if (!servicesConnected()) {
            listener.onVisitStartError();
            return;
        }

        if (mLocationServiceConnected) {
            if (isAcceptableLocation(mLocationClient.getLastLocation())) {
                Toast.makeText(this, "You have arrived!", Toast.LENGTH_LONG);
            } else {
                mVisitListener.onVisitStartError();
            }
        }    
    }

    private boolean isAcceptableLocation(Location location) {
        if (location == null) {
            Toast.makeText(this, "Location is null", Toast.LENGTH_LONG).show();
            return false;
        }

        return true;
    }


    private void initLocation() {

        if (mLocationRequest == null) {
            // Create a new global location parameters object
            mLocationRequest = LocationRequest.create();
            /*
             * Set the update interval
             */
            mLocationRequest
                    .setInterval(LocationUtils.UPDATE_INTERVAL_IN_MILLISECONDS);

            // Use high accuracy
            mLocationRequest
                    .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

            // Set the interval ceiling to one minute
            mLocationRequest
                    .setFastestInterval(LocationUtils.FAST_INTERVAL_CEILING_IN_MILLISECONDS);

        }

        if (mLocationClient == null) {
            mLocationClient = new LocationClient(this, this, this);
            mLocationClient.connect();
        }
    }

    /**
     * Verify that Google Play services is available before making a request.
     * 
     * @return true if Google Play services is available, otherwise false
     */
    private boolean servicesConnected() {

        // Check that Google Play services is available
        int resultCode = GooglePlayServicesUtil
                .isGooglePlayServicesAvailable(this);

        // If Google Play services is available
        if (ConnectionResult.SUCCESS == resultCode) {
            // In debug mode, log the status
            Log.d(LocationUtils.APPTAG,
                    getString(R.string.play_services_available));

            return true;
        } else {

            return false;
        }
    }

    public class VisitBinder extends Binder {
        public VisitService getService() {
            return VisitService.this;
        }
    }


    /**
     * In response to a request to start updates, send a request to Location
     * Services
     */
    private void startPeriodicUpdates() {

        mLocationClient.requestLocationUpdates(mLocationRequest, this);
        Toast.makeText(this, "Location Update Requested", Toast.LENGTH_LONG).show();
    }

    /**
     * In response to a request to stop updates, send a request to Location
     * Services
     */
    private void stopPeriodicUpdates() {
        mLocationClient.removeLocationUpdates(this);

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.d(LocationUtils.APPTAG, "Location Services Connection faild");


    }

    @Override
    public void onConnected(Bundle bundle) {
        Log.d(LocationUtils.APPTAG, "Location Services Connected");
        mLocationServiceConnected = true;
        startPeriodicUpdates();
    }

    @Override
    public void onDisconnected() {
        mLocationServiceConnected = false;
    }

    @Override
    public void onLocationChanged(Location location) {
        Toast.makeText(this, "Location has been changed", Toast.LENGTH_LONG).show();
    }
}

Android-Manifest

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>