自定义动态注册广播和静态注册广播

一.动态注册
关键代码

class MyActivity extentds Activity{
    
    //DYNC_BROADCAST可以随意,但注册广播和发送广播时action应该保持一致
    private static final String DYNC_BROADCAST = "guo.com.example.dyncBroadcastReceiver";
    private DyncBroadcastReceiver dyncBroadcastReceiver = new DyncBroadcastReceiver();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        .....
        // 注册广播
        IntentFilter iFilter = new IntentFilter();
        iFilter.addAction(DYNC_BROADCAST);
        registerReceiver(dyncBroadcastReceiver, iFilter);
    }


    // 发送广播通知
    protected void sendBroadcast(){
        Intent intent = new Intent();
        intent.setAction(DYNC_BROADCAST);
        sendBroacdcast(intent);
    }

　　

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

}

二.静态注册

class MyActivity extentds Activity{

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


    // 发送广播通知
    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>

两者区别:
动态注册广播需要在每个活动页注册,静态广播可以实现注册到所有活动页.因为动态注册逻辑写在onCreate中,所以应用如果没启动,则无法通知.静态注册可不受此限制.