13 BroadcastReceiver

1. 复写BroadcastReceiver中的onReceive()方法。


2. intent-filter过滤器：
   
   

   <intent-filter>
   <action
   android:name="android.provider.Telephony.SMS_RECEIVED"/>
   
   </intent-filter>
   </receiver>



3. 发送intent
   protected static final String ACTION =
   "com.szy.broadcast.ACTION";

   public void onClick(View v)
   {
   Intent intent=new
   Intent();
   intent.setAction(ACTION);
   sendBroadcast(intent);
   }



4. 生命周期：每次发送的时候都创建，执行完之后都销毁。

在程序中注册，而不在xml配置文件中注册：

protected static final String ACTION = "com.szy.broadcast.ACTION";

private SecondReceiver receiver;

//发送消息

public void onClick(View v)
{
Intent intent=new
Intent();
intent.setAction(ACTION);
sendBroadcast(intent);
}

//注册广播

public void onClick(View v)
{
receiver=new
SecondReceiver();
IntentFilter filter=new
IntentFilter();
filter.addAction(ACTION);
registerReceiver(receiver,
filter);
}

//注销广播

public void onClick(View
v)
{
unregisterReceiver(receiver);
}

13 BroadcastReceiver,码迷,mamicode.com