Android Broadcast Receiver 簡單例子

Android BroadcastReceiver

（學習mars老師的視頻）

註冊的方式

有兩種：

一個是在AndroidManifest.xml中聲明：

        <receiver android:name=".Test_Receiver" >

            <intent-filter>

                <action android:name="android.intent.action.sss" />

            </intent-filter>

         </receiver>

類文件裏面的代碼：

                       Intent intent = new Intent();

                       intent.setAction("android.intent.action.sss");

                       Test_BCActivity.this.sendBroadcast(intent);

 

另一個是代碼註冊：

綁定receiver

publicstaticfinal String SMS_RECEIVED_ACTION = "android.provider.Telephony.SMS_RECEIVED";

                      // 生成一個receiver對象

                      receiver = new Test_Receiver();

                      // 生成一個filter對象

                      IntentFilter  intentFilter = new IntentFilter();

                      // 爲filter添加一個action

                      intentFilter.addAction(SMS_RECEIVED_ACTION);

                      Test_BCActivity.this.registerReceiver(receiver, intentFilter);

解除綁定receiver

Test_BCActivity.this.unregisterReceiver(receiver);

兩者的主要區別是，xml文件中註冊的廣播機制，在應用程序關閉之後，依然運行。一直運行。通過代碼註冊的廣播是在應用程序關閉之後是關閉的，及時生效。

 

關於receiver類的代碼

publicclass Test_Receiver extends BroadcastReceiver {

      public Test_Receiver()  {

           Log.d("Test_Receiver", "構造函數");

      }

      @Override

      publicvoid onReceive(Context  context, Intent intent) {

           // TODO Auto-generated method stub

           Log.d("Test_Receiver", "OnReceive");

      }

}