问如何使用startResolutionForResult获取服务中的活动

EN

public class GPSTestService extends Service  implements  GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener ,VolleyResultCallBack {
private boolean ContinueConnection = true;
LocationRequest mLocationRequest;
public static GoogleApiClient mGoogleApiClient;
PendingResult<LocationSettingsResult> result;
final static int REQUEST_LOCATION = 199;
Context contex;
@Override
public void onVolleyErrorListener(VolleyError error) {

}

@Override
public void onVolleyResultListener(Context mContext, JSONArray response) {

}

@Override
public void onCreate() {
    super.onCreate();
    contex=getApplicationContext();
}

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

}

@Override
public void onConnected(@Nullable Bundle bundle) {
    mLocationRequest = LocationRequest.create();
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setInterval(30 * 1000);
    mLocationRequest.setFastestInterval(5 * 1000);

    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
            .addLocationRequest(mLocationRequest);
    builder.setAlwaysShow(true);

    result = LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());

    result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
        @Override
        public void onResult(LocationSettingsResult result) {
            final Status status = result.getStatus();
            //final LocationSettingsStates state = result.getLocationSettingsStates();
            switch (status.getStatusCode()) {
                case LocationSettingsStatusCodes.SUCCESS:
                    // All location settings are satisfied. The client can initialize location
                    // requests here.
                    //...
                    break;
                case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                    // Location settings are not satisfied. But could be fixed by showing the user
                    // a dialog.
                    Toast.makeText(getApplicationContext(), "GPSTestService", Toast.LENGTH_SHORT).show();
                    try {
                        // Show the dialog by calling startResolutionForResult(),
                        // and check the result in onActivityResult().

                        status.startResolutionForResult((Activity) contex,  REQUEST_LOCATION);
                    } catch (IntentSender.SendIntentException e) {
                        // Ignore the error.
                    }
                    break;
                case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                    // Location settings are not satisfied. However, we have no way to fix the
                    // settings so we won't show the dialog.
                    //...
                    break;
            }
        }
    });
}

@Override
public void onConnectionSuspended(int i) {

}

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
   // Utils.getInstance().syncData(this,this);
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this).build();
    mGoogleApiClient.connect();
    return Service.START_NOT_STICKY;
}