Android: pass parameter to Service from Activity

Question

I'm binding to Service by this way:

Activity class:

ListenLocationService mService; @Override public void onCreate(Bundle savedInstanceState) {         ...         Intent intent = new Intent(this, ListenLocationService.class);         intent.putExtra("From", "Main");         bindService(intent, mConnection, Context.BIND_AUTO_CREATE);         ... }  private ServiceConnection mConnection = new ServiceConnection() {          public void onServiceConnected(ComponentName className,                 IBinder service) {             LocalBinder binder = (LocalBinder) service;             mService = binder.getService();                  }          public void onServiceDisconnected(ComponentName arg0) {         }     }; 

This is onBind method of my Service:

@Override public IBinder onBind(Intent intent) {     Bundle extras = intent.getExtras();      if(extras == null)         Log.d("Service","null");     else     {         Log.d("Service","not null");         String from = (String) extras.get("From");         if(from.equalsIgnoreCase("Main"))             StartListenLocation();     }     return mBinder; } 

So I have "null" in LogCat - bundle is null in spite of I made intent.putExtra before bindService

In general Service works fine. However I need to call StartListenLocation(); only from main activity of application (I decide to do this by sending a flag).

How can I send a data to service?Or maybe there's another way to check what activity launched onBind?

Answer 1

You can pass the parameter in this simple way:-

Intent serviceIntent = new Intent(this,ListenLocationService.class);     serviceIntent.putExtra("From", "Main");    startService(serviceIntent); 

and get the parameter in onStart method of your service class

@Override public void onStart(Intent intent, int startId) {     super.onStart(intent, startId);     Bundle extras = intent.getExtras();      if (extras == null) {         Log.d("Service","null");     else {         Log.d("Service","not null");         String from = (String) extras.get("From");         if(from.equalsIgnoreCase("Main"))         StartListenLocation();     } } 

Enjoy :)