两个activity之间发送本地广播

本地广播通信详解

最新推荐文章于 2024-03-23 22:05:43 发布

原创最新推荐文章于 2024-03-23 22:05:43 发布 · 1.4k 阅读

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CC 4.0 BY-SA版权

本文详细介绍了Android中使用LocalBroadcastManager进行本地广播发送与接收的方法。包括如何创建广播发送者、注册与注销广播接收者，以及如何定义广播动作等关键步骤。

发送方

  private LocalBroadcastManager localBroadcastManager;

……
localBroadcastManager = LocalBroadcastManager.getInstance(mContext);
//如果该类本身有界面的话直接用this没界面用context
            Intent intent = new Intent("isnotTalking");
            localBroadcastManager.sendBroadcast(intent);

接收方

private IntentFilter intentFilter;
    private LocalBroadcastManager localBroadcastManager;
    private LocalReceiver localReceiver;
……
//下面的写在onCreate()中
   localBroadcastManager = LocalBroadcastManager.getInstance(this);
        intentFilter = new IntentFilter();
        intentFilter.addAction("isnotTalking");
        localReceiver = new LocalReceiver();
        localBroadcastManager.registerReceiver(localReceiver,intentFilter);
//写在onDestroy()中
   localBroadcastManager.unregisterReceiver(localReceiver);
      class  LocalReceiver extends BroadcastReceiver{
        @Override
        public void onReceive(Context context,Intent intent){
           //这里写接收到广播后要执行的操作
        }
    }