activity画面间通知 BroadcastReceiver

注册广播和接受消息:

final BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        //todo sth
    }
};
registerReceiver(receiver, new IntentFilter("broadsend.action"));

发送广播：

Intent intent = new Intent("broadsend.action");
intent.putExtra("data","send");
sendBroadcast(intent);