一个Android应用程序中包含多个应用程序文件 [英] Multiple Application Files in one Android app

问题描述

我制作了三个应用程序，现在我希望将它们打包到一个apk文件中(一个安装程序).在启动包装器应用"时，用户应决定要运行哪个应用.

I made three apps, which I now want to ship in one apk file (one installation). On startup of the "wrapper app" the user should decide which app to run.

到目前为止，还不错，但是问题是，每个应用程序都使用应用程序文件中的全局常量.有没有一种方法可以将三个应用程序合为一个，每个应用程序都使用自己的应用程序文件?

So far, so good, but the problem is, each app is using global constants from an Application file. Is there a way to build the three apps into one, where each app uses its own application file?

谢谢！

为避免混淆，我添加一个简短的示例:

To avoid confusion i add a short example:

应用1:

public class AApplication extends Application {
    public static String CONSTANT_1 = "aaa";
}

应用2:

public class BApplication extends Application {
public static String CONSTANT_1 = "bbb";
}

应用3:

public class CApplication extends Application {
    public static String CONSTANT_1 = "ccc";
}

推荐答案

好吧，由于我的想法显然无法实现，因此我提出了以下解决方法:

Ok, since the idea I head is obviously not realizable I came up with the following workaround:

1. 我在新项目中创建了一个Apllication类

1. I created an Apllication class in the new Project

public class NewApplication extends OldSuperApplication {}

我添加了一种方法

I added a method

public static void setApplication(RGCApplication a) {
    CONSTANT_1 = a.CONSTANT_1;
    ...
} 

在开始屏幕上选择所需的子应用"后，在这种情况下，我会调用"A"应用

after selecting the desired "sub-app" on the startscreen in this case application "A" i call

NewApplication.setApplication(new AApplication());

或

NewApplication.setApplication(new BApplication());

我不确定这是否是臭代码，但可以！

I'm not sure if this is smelly coding or not, but it works!

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