I get null pointer exception at line mService.start() when i try to bind to an already started service. I do the same thing from different activity(where the service gets started) everythig goes right. All these activities are part of one application.
What do you think I do wrong?
public class RouteOnMap extends MapActivity{
private static final int NEW_LOCATION = 1;
private static final int GPS_OFF = 2;
private MapView mMapView;
private ILocService mService;
private boolean mServiceStarted;
private boolean mBound;
private Intent mServiceIntent;
private double mLatitude, mLongitude;
private ServiceConnection connection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder iservice) {
mService = ILocService.Stub.asInterface(iservice);
mBound = true;
}
public void onServiceDisconnected(ComponentName className) {
mService = null;
mBound = false;
}
};
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.mapview);
mMapView = (MapView) findViewById(R.id.mapview);
mMapView.setBuiltInZoomControls(true);
mServiceIntent = new Intent();
mLatitude = 0.0;
mLongitude = 0.0;
mBound = false;
}
@Override
public void onStart(){
super.onStart();
mServiceIntent.setClass(this, LocationService.class);
//startService(mServiceIntent);
if(!mBound){
mBound = true;
this.bindService(mServiceIntent, connection, Context.BIND_AUTO_CREATE);
}
}
@Override
public void onResume(){
super.onResume();
try {
mService.start();
} catch (RemoteException e) {
e.printStackTrace();
}
}
@Override
public void onPause(){
super.onPause();
if(mBound){
this.unbindService(connection);
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
You have no way of knowing if the service is bound by onResume()
. bindService()
is not a blocking call. Call mService.start()
from your onServiceConnected()
method.
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