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POLocationClient getLastLocation() return null
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copied!<p>Like the questions someone encountered before I tested one the nexus s(4.0.4 with google play service available) and avd (4.2.2 with google api), in both case locationclient's <code>getLastLocation()</code> always return <code>null</code>.</p> <pre><code>public class MainActivity extends Activity implements LocationListener, GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener { private LocationClient mLocationClient; private LocationRequest mLocationRequest; boolean mUpdatesRequested = false; boolean mConnected = false; SharedPreferences mPrefs; SharedPreferences.Editor mEditor; private TextView mText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mText = (TextView) findViewById(R.id.text); mLocationRequest = LocationRequest.create(); mLocationRequest .setInterval(LocationUtils.UPDATE_INTERVAL_IN_MILLISECONDS); mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY); mLocationRequest .setFastestInterval(LocationUtils.FAST_INTERVAL_CEILING_IN_MILLISECONDS); mUpdatesRequested = false; mPrefs = getSharedPreferences(LocationUtils.SHARED_PREFERENCES, Context.MODE_PRIVATE); mEditor = mPrefs.edit(); mLocationClient = new LocationClient(this, this, this); } @Override public void onStart() { super.onStart(); /* * Connect the client. Don't re-start any requests here; instead, wait * for onResume() */ mLocationClient.connect(); } @Override protected void onResume() { super.onResume(); // If the app already has a setting for getting location updates, get it if (mPrefs.contains(LocationUtils.KEY_UPDATES_REQUESTED)) { mUpdatesRequested = mPrefs.getBoolean( LocationUtils.KEY_UPDATES_REQUESTED, false); // Otherwise, turn off location updates until requested } else { mEditor.putBoolean(LocationUtils.KEY_UPDATES_REQUESTED, false); mEditor.commit(); } } @Override public void onStop() { // If the client is connected if (mLocationClient.isConnected()) { stopPeriodicUpdates(); } // After disconnect() is called, the client is considered "dead". mLocationClient.disconnect(); super.onStop(); } @Override public void onPause() { // Save the current setting for updates mEditor.putBoolean(LocationUtils.KEY_UPDATES_REQUESTED, mUpdatesRequested); mEditor.commit(); super.onPause(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } public void getLocation(View v) { // If Google Play Services is available if (isGooglePlayServicesAvailable()) { if (!mConnected) mText.setText("location client is not connected to service yet"); else { // Get the current location Location currentLocation = mLocationClient.getLastLocation(); // Display the current location in the UI mText.setText(LocationUtils.getLocationString(currentLocation)); } } } private boolean isGooglePlayServicesAvailable() { // 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, "google play service is available"); // Continue return true; // Google Play services was not available for some reason } else { // Display an error dialog Dialog dialog = GooglePlayServicesUtil.getErrorDialog(resultCode, this, 0); if (dialog != null) { Log.e(LocationUtils.APPTAG, "google play service is unavailable"); } return false; } } private void stopPeriodicUpdates() { mLocationClient.removeLocationUpdates(this); // mConnectionState.setText(R.string.location_updates_stopped); } @Override public void onConnectionFailed(ConnectionResult arg0) { mConnected = false; Log.d(LocationUtils.APPTAG, "connection failed"); } @Override public void onConnected(Bundle arg0) { mConnected = true; Log.d(LocationUtils.APPTAG, "location client connected to the location server"); LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); lm.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, 0, 0, new android.location.LocationListener() { @Override public void onStatusChanged(String provider, int status, Bundle extras) {} @Override public void onProviderEnabled(String provider) {} @Override public void onProviderDisabled(String provider) {} @Override public void onLocationChanged(final Location location) { } }); Log.d(LocationUtils.APPTAG, "done trying to get location"); } @Override public void onDisconnected() { // TODO Auto-generated method stub mConnected = false; Log.d(LocationUtils.APPTAG, "location client disconnected from the location server"); } @Override public void onLocationChanged(Location arg0) {} } </code></pre> <p>most of them came from examples given by google. In the code above hava tried the method like that:</p> <pre><code>LocationRequest request = LocationRequest.create(); request.setNumUpdates(1); mLocationClient.requestLocationUpdates(request, this); </code></pre> <p>and </p> <pre><code>LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); lm.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, 0, 0, new android.location.LocationListener() { @Override public void onStatusChanged(String provider, int status,Bundle extras) {} @Override public void onProviderEnabled(String provider) {} @Override public void onProviderDisabled(String provider) {} @Override public void onLocationChanged(final Location location) {} }); </code></pre> <p>In <code>onConnected()</code> before calling <code>getLastLocation()</code>, but still get no luck. Where's the mistake, Thanks in advance.</p>

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