帮助首款Android活动 [英] Help with first Android Activity

问题描述

在我的应用程序第一次打开即psented用户$ P $可以根据配置选项因我的第一项活动。我只知道如何到c，当应用程序被添加像这样的清单运行运行的第一个活动硬$ C $

When my app first opens my first activity that is presented to the user can vary based on configuration options. I only know how to hard code the first activity that runs when the app is running by adding something like this in the Manifest

<activity android:label="@string/app_name" android:name=".MyFirstActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

在哪里MyFirstActivity是第一个活动类的要运行的类名。如何动态选择哪些活动首先运行时，应用程序首次启动而不是C很难$ C $在清单？

Where MyFirstActivity is the class name of the first activity class to be run. How can I dynamically select which activity to run first when the app is first launched rather than hard code it in the manifest?

谢谢！

推荐答案

选项＃1：在的onCreate（）的 MyFirstActivity ，呼叫 startActivity（）为正确的活动，那么完成（）。

Option #1: In onCreate() of MyFirstActivity, call startActivity() for the right activity, then finish().

选项2：定义了若干活动与 LAUNCHER ＆LT;意向滤光器＆gt; ，所有，但一个残疾人。在第一次运行（或需要），使正确的活动，并禁止其他人。下行：可能需要重新启动手机来更新发射器，因为不是所有的主屏幕发射器会检测你的变化

Option #2: Define several activities with the LAUNCHER <intent-filter>, all but one disabled. On first run (or as needed), enable the right activity and disable the others. Downside: may require a phone reboot to update the launcher, since not all home screen launchers will detect your change.

选项＃3：重新设计您的GUI，使得这不是一个问题

Option #3: Redesign your GUI such that this is not an issue.

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