BroadCastReceiver

文章目录

1. 1. 注册BroadcastReceiver
2. 2. 触发BroadcastReceiver

在Android中，Broadcast是一种广泛运用在应用程序之间传输信息的机制，而BroadcastReceiver是对发送出来的Broadcast进行过滤接收并响应的一类组件

注册BroadcastReceiver

在AndroidManifest.xml中用标签注册

• 静态注册过滤器

  <receiver android:name="myRecevice">
  	<intent-filer>
  		<action android:name="com.zoe.net"/>
  	</intent-filer>
  </receiver>

• 动态注册过滤器

  IntentFilter intentFilter = new IntentFilter();
  intentFilter.addAction(String);
  registerReceiver(BroadcastReceiver,intentFilter); // 在BroadCastReceiver的onStart中注册，onStop中unregiterReceiver

触发BroadcastReceiver

Intent intent = new Intent("com.zoe.net");
intent.putExtra("msg","发送消息");
Content.sendBroadcast(intent);

接受到广播消息后会执行onReceive()方法

@Override 
public void onReceive(Context context,Intent intent) {
	String msg = intent.getStringExtra("msg");
	int id = intent.getIntExtra("who",0);
	if(intent.getAction().equals("com.zoe.sendMsg")) {
		mn = (NotificationManage)context.getSystemService(Context.NOTIFICATION_SERViCE);
		notification = new Notification(R.drawable.icon,id+"发送广播",System.currentTimeMillis());
		Intent it = new Intent(context,Main.class);
		PendIntent contentIntent = PenIntent.getActivity(context,0,it,0);
		notification.sendLatesEventInfo(context,"msg","msg",contentIntent);
		mn.notify(0,notification);
	}
}