Android Broadcast广播机制

有时需要加上Android的版本

3、写一个接受Broadcast的类TestReceiver extends BroadcastReceiver{
//写构造方法
public TestReceiver(){
System.out.println("TestReceiver");
}

//override onReceive方法
public void onReceiver(Context context,Intent intent){
System.out.println("onReceive");
}
}

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深入了解Broadcast
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1、更新UI,那么在应用程序中注册。在Activity启动时注册BroadcastReceiver，在Activity
不可见以后取消注册

//注册BroastcastReceiver
registerReceiver(receiver,filter);

//取消注册BroadcastReceiver
unregisterReceiver(receiver);