android - 具有不同操作的 Intent 过滤器

Question

以下BroadcastReceiver有什么区别:

1. ReceiverA 有一个 intent 过滤器，有两个 action

   <receiver android:name="com.example.somepackage.ReceiverA">
       <intent-filter>
           <action android:name="com.example.somepackage.intent.actionA"/>
           <action android:name="com.example.somepackage.intent.actionB"/>
       </intent-filter>
   </receiver>
   

2. ReceiverB 有两个 Intent 过滤器，每个过滤器有一个 Action

   <receiver android:name="com.example.somepackage.ReceiverB">
       <intent-filter>
           <action android:name="com.example.somepackage.intent.actionA"/>
       </intent-filter>
       <intent-filter>
           <action android:name="com.example.somepackage.intent.actionB"/>
       </intent-filter>
   </receiver>
   

对于这些actionA 和actionB，ReceiverA 和ReceiverB 在功能上有何不同？

Answer 1

AFAIK 在功能上，它们都做同样的事情:它们被注册为监听 actionA 和 actionB。

ReceiverA 就像:

 IntentFilter intentFilter = new IntentFilter();
 intentFilter.addAction(actionA);
 intentFilter.addAction(actionB);
 registerReceiver(ReceiverA, intentFilter);

ReceiverB 就像:

registerReceiver(ReceiverB, intentFilterActionA);
registerReceiver(ReceiverB, intentFilterActionB);