如何获得多个图标以在一个应用程序中启动不同的活动? [英] How do I get multiple icons to launch different activities in one application?

问题描述

我有一个包含两个活动的应用程序，我希望能够在启动器中显示两个图标，每个图标启动应用程序中的相应活动.

I have an application with two activities and I'd like to be able to have two icons appear in the launcher, each launching the respective activity within the app.

具体来说，我想要一个图标来启动我的主应用程序，另一个图标来启动我的设置活动.这可能吗?

Specifically, I want one icon to launch my main app, and another icon to launch my settings activity. Is this possible?

这是我迄今为止尝试过的:

Here is what I've tried so far:

    <activity android:label="MyApp" android:name=".MyApp">
        <intent-filter>
            <action android:name=".MyApp"/>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>


    <activity android:label="Settings" android:name=".Settings">
        <intent-filter>
            <action android:name=".Settings"/>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>

这会创建两个启动器图标，但它们都运行我的主应用程序，而不是运行我的设置应用程序的第二个图标.我试过只使用启动器类别，但后来我没有得到图标，所以看起来我也需要主要操作.

This creates two launcher icons, but they both run my main app instead of the second icon running my settings app. I've tried just having the launcher category but then I don't get an icon so it looks like I need the main action as well.

这是正确的方法还是我应该在清单中声明两个应用程序?

Is this the right approach or should I be declaring two applications in the manifest instead?

推荐答案

您需要做的是在另一个任务中启动您的设置活动.您可以通过指定其任务关联来完成此操作.这是通过属性 android:taskAffinity 完成的.默认情况下，所有活动共享相同的任务关联，默认为清单中指定的主包.在您的设置活动中，您可以指定 android:taskAffinity="your.own.package.SettingsTask" 以在其自己的任务中启动设置活动.

What you need to do is have your settings activity launch in another task. You can do this by specifying its task affinity. This is done with the attribute android:taskAffinity. By default all activities share the same task affinity that defaults to main package specified in the manifest. On your settings activity you can specify android:taskAffinity="your.own.package.SettingsTask" to have the settings activity launch in its own task.

额外文档.

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