在AndroidManifest.xml中两项主要活动 [英] Two main activities in AndroidManifest.xml

问题描述

我想有我的应用程序主要活动。  所以在我的表现，我把

I would like to have to main activities in my app. So in my manifest I put

  <activity
        android:name="mypackage1.MainActivity"
        android:label="@string/title_activity_main"

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

     <activity
        android:name="mypackage2.MainActivity2"
        android:label="@string/title_activity_main2"
      "
         >
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

    </activity>

两个图标在我的应用程序菜单中创建。但是，当我点击他们每个人的第一个活动MainActivity总是启动。是否有可能有两个主要活动？如果是这样，什么是错的我做了什么？ 谢谢

Two icons are created in my apps menu. But when I click on each of them the first activity MainActivity is always launched. Is it possible to have two main activities? If so, what's wrong with what I did? Thanks

推荐答案

在 LAUNCHER 意图过滤器是什么决定了显示在应用程序的抽屉/发射器。这就是为什么你显示了两个图标。

The LAUNCHER intent filter is what determines what shows up in the app drawer/launcher. That is why you get two icons shown up.

不过，您还可以设置默认意图过滤器，它设置默认的活动为全包。既然你两次设置它，你得到的第一个precedence问题/最新注册。当您删除默认过滤器，你就可以开始无论你在启动点击。

However, you also set the DEFAULT intent filter, which sets the default Activity for the whole package. Since you set it twice, you get the problem of precedence of the first/latest registered. When you remove the DEFAULT filter, you will be able to start whatever you click on in the launcher.

在总之，无论从活动中删除以下行：

In short, remove the following line from both Activities:

<category android:name="android.intent.category.DEFAULT" /> 

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