android - Event Raise on Service -


think have service play musics , have actvity bind service , want when service started new music , raise event , activity shows toast , how can , here 

service service = new se... bindtoservice();  service.onmediaplayerstarted(new event(  public void run() {  }; ));

i want craete custom event mediaplayerstarted , when

you can in 2 ways:

1) use localbroadcastmanager , write receiver sending , receiving broadcasts within application (might heavy , complex, not expanding details, works).

2) use message passing using handler (this simple).

  • create handler in main activity , pass reference service
  • send empty message using activity handler respective event id , update ui accordingly in activity.
  • refer example. - user timertask , runnables pupose send empty message using handler , handle them in handlemessage(message msg) call of handler.

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