自定義動態注冊廣播和靜態注冊廣播

一.動態注冊
關鍵代碼

 

class MyActivity extentds Activity{
    
    //DYNC_BROADCAST可以隨意,但注冊廣播和發送廣播時action應該保持一致
    private static final String DYNC_BROADCAST = "guo.com.example.dyncBroadcastReceiver";
    private DyncBroadcastReceiver dyncBroadcastReceiver = new DyncBroadcastReceiver();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        .....
        // 注冊廣播
        IntentFilter iFilter = new IntentFilter();
        iFilter.addAction(DYNC_BROADCAST);
        registerReceiver(dyncBroadcastReceiver, iFilter);
    }


    // 發送廣播通知
    protected void sendBroadcast(){
        Intent intent = new Intent();
        intent.setAction(DYNC_BROADCAST);
        sendBroacdcast(intent);
    }

　　

　　@Override
　　protected void onDestroy() {
　　　　unregisterReceiver(dyncBroadcastReceiver);
    　　super.onDestroy();
　　　　
　　}

}

 

二.靜態注冊

class MyActivity extentds Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        .....
    }


    // 發送廣播通知
    protected void sendBroadcast(){
        Intent intent = new Intent();
        intent.setAction("guo.com.example.MyBroadcast");
        sendBroacdcast(intent);
    }

}

 

AndroidManifest.xml

<receiver android:name=".MyBroadcastReceiver">
    <intent-filter>
        <action android:name="guo.com.example.MyBroadcast" />
    </intent-filter>
</receiver>

 

兩者區別:
動態注冊廣播需要在每個活動頁注冊,靜態廣播可以實現注冊到所有活動頁.因為動態注冊邏輯寫在onCreate中,所以應用如果沒啟動,則無法通知.靜態注冊可不受此限制.