BroadCastReceive的使用

1.在activity中

Intent i  = new Intent();
i.setAction("ck");  //ck是随便定义的一个字符串
i.putExtra("msg","message from broadcast...");
sendBroadcast(i);


2.在Manifest中

<receiver android:name="MyReceiver">       //MyReceiver是接受类的名字
<intent-filter>
<action android:name="ck"/>  //和之前的字符串保持一致..
</intent-filter>
</receiver>


3.在接受类MyReceiver中

MyReceiver继承BroadcastReceiver
重写onReceive方法,获取msg信息..
String msg = intent.getString("msg");