android BroadcastReceiver

public abstract class BroadcastReceiver

register

IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_1);
filter.addAction(ACTION_2);
...
// filter.addDataScheme("file");
registerReceiver(broadcastReceiver, filter);

handle broadcast

BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
	String str = intent.getAction();
	if (str.equals(ACTION_1)) {
		// do something...
	} else if (str.equals(ACTION_2)) {
		// do another thing...
	} ...
    }
}

send broadcast

Intent intent = new Intent(ACTION_1);
sendBroadcast(intent);

unregister

unregisterReceiver(broadcastReceiver);