Android四大组件之BroadcastReceiver

广播

class BroadCast extends BroadcastReceiver{
	//广播接受者
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i("zyb", "onReceive: 广播");

    }
}

动态注册

        broadCast = new BroadCast();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction("xxx.xxx");//广播频道
        getActivity().registerReceiver(broadCast,intentFilter);

销毁

		//解除注册
        getActivity().unregisterReceiver(broadCast);

发送广播

                //发送广播
                Intent intent = new Intent();
                intent.setAction("xxx.xxx");
                sendBroadcast(intent);