Samsung Note 2 cannot reach onLocationChanged ()

Question

It works on most devices except Galaxy Note 2. It connects to Google Client, but cannot reach onLocationChanged() , which implements LocationListener . Does anyone know what it causes and why only on this device?

 @Override public void onLocationChanged(Location location) { mLastLocation = location; if (mLastLocation != null) { lat = mLastLocation.getLatitude(); lng = mLastLocation.getLongitude(); Toast.makeText(getApplicationContext(), String.valueOf(lat) + "/" + String.valueOf(lng), Toast.LENGTH_LONG).show(); serverUrl = "http://(my server)/offers?lat=" + String.valueOf(mLastLocation.getLatitude()) + "&lng=" + String.valueOf(mLastLocation.getLongitude()) + "&distance=1"; // save makeTag(serverUrl); // after getting location data - unregister listener LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, mFusedLocationCallback); new GetBackgroundUpdate().execute(); } else { // get data from server and update GridView new GetBackgroundUpdate().execute(); Toast.makeText(getApplicationContext(), R.string.no_location_detected, Toast.LENGTH_LONG).show(); } /** Location methods */ protected synchronized void buildGoogleApiClient() { mGoogleApiClient = new GoogleApiClient.Builder(this) .addConnectionCallbacks(this) .addOnConnectionFailedListener(this) .addApi(LocationServices.API) .build(); } /** * Runs when a GoogleApiClient object successfully connects. */ @Override public void onConnected(Bundle connectionHint) { // Provides a simple way of getting a device location and is well suited for // applications that do not require a fine-grained location and that do not need location // updates. Gets the best and most recent location currently available, which may be null // in rare cases when a location is not available. mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient); mLocationRequest = new LocationRequest(); mLocationRequest.setInterval(1000); mLocationRequest.setFastestInterval(500); mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mFusedLocationCallback); } @Override public void onConnectionFailed(ConnectionResult result) { // Refer to the javadoc for ConnectionResult to see what error codes might be returned in // onConnectionFailed. Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode()); if (mResolvingError) { // Already attempting to resolve an error. return; } else if (result.hasResolution()) { try { mResolvingError = true; result.startResolutionForResult(this, REQUEST_RESOLVE_ERROR); } catch (IntentSender.SendIntentException e) { // There was an error with the resolution intent. Try again. mGoogleApiClient.connect(); } } else { // Show dialog using GooglePlayServicesUtil.getErrorDialog() final AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage(String.valueOf(result.getErrorCode())) .setCancelable(false) .setNegativeButton("Ok", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, final int id) { dialog.cancel(); } }); final AlertDialog alert = builder.create(); alert.show(); mResolvingError = true; } //new GetBackgroundUpdate().execute(); } @Override public void onConnectionSuspended(int cause) { // The connection to Google Play services was lost for some reason. We call connect() to // attempt to re-establish the connection. Log.i(TAG, "Connection suspended"); mGoogleApiClient.connect(); } @Override protected void onStart() { super.onStart(); mGoogleApiClient.connect(); } @Override protected void onStop() { super.onStop(); if (mGoogleApiClient.isConnected()) { mGoogleApiClient.disconnect(); } } 

Answer 1

Edit: from a line in your comment where a NullPointerException occurs, just make sure mLastLocation not null.

 if (mLastLocation != null){ address = server + String.valueOf(mLastLocation.getLatitude()) + "&lng=" + String.valueOf(mLastLocation.getLongitude()) + "&distance=" + distance; } 

Another thing to note is to always make sure that mGoogleApiClient not null and not connected before using it.

 if (mGoogleApiClient != null && mGoogleApiClient.isConnected()){ //..... use mGoogleApiClient..... } 

See documentation here

You should also add a check to find out if Google Play services are available, because sometimes the version available on the device is lower than the version with which you will compile the application. There is a dialogue that you can show if so.

Below is a description of how you can check if Google Play services are available.

 private boolean isGooglePlayServicesAvailable() { int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this); if (ConnectionResult.SUCCESS == status) { return true; } else { GooglePlayServicesUtil.getErrorDialog(status, this, 0).show(); return false; } } 

Note that getLastLocation() has a high tendency to return null, so a good approach would be to register a location receiver if you get a null value from the first call to getLastLocation() .
See This Post: LocationClient getLastLocation () returns null

The following is a guide on registering LocationListener :

Creating a listener:

 LocationCallback mFusedLocationCallback = new LocationCallback(); 

Class definition:

 private class LocationCallback implements LocationListener { public LocationCallback() { } @Override public void onLocationChanged(Location location) { mLastLocation = location; lat = String.valueOf(mLastLocation.getLatitude()); lng = String.valueOf(mLastLocation.getLongitude()); } }; 

Then just register the LocationListener :

  mLocationRequest = new LocationRequest(); mLocationRequest.setInterval(minTime); mLocationRequest.setFastestInterval(fastestTime); mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY); mLocationRequest.setSmallestDisplacement(distanceThreshold); LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mFusedLocationCallback); 

Edit: you need to wait until the API is connected before registering for location callbacks, it should be something like this:

 /** * Runs when a GoogleApiClient object successfully connects. */ @Override public void onConnected(Bundle connectionHint) { // Provides a simple way of getting a device location and is well suited for // applications that do not require a fine-grained location and that do not need location // updates. Gets the best and most recent location currently available, which may be null // in rare cases when a location is not available. mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient); if (mLastLocation != null) { lat = String.valueOf(mLastLocation.getLatitude()); lng = String.valueOf(mLastLocation.getLongitude()); } else { Toast.makeText(this, R.string.no_location_detected, Toast.LENGTH_LONG).show(); } mLocationRequest = new LocationRequest(); mLocationRequest.setInterval(1000); mLocationRequest.setFastestInterval(500); mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mFusedLocationCallback); } 

Documentation: for requestLocationUpdates .... and LocationRequest .

Last, make sure you have this in your AndroidManifest.xml inside the application tag:

  <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />