两个相同APK软件包可能吗？ [英] Two Packages in Same APK possible?

问题描述

我想实现共享preferences这个伟大的技术跨越两个不同的应用程序，同时还MODE_PRIVATE。

我的问题是，第一个应用程序不能认为第一个应用程序安装（反之亦然）等等：

 上下文C = createPackageContext（com.app.first，MODE_PRIVATE）;
 

必须被替换为：

 上下文C = createPackageContext（com.app.shared，MODE_PRIVATE）;
 

但是，这任务并称 com.app.shared 真实的，换算成第二个APK？

在换句话说，有只有一个 的Andr​​oidManifest.xml 每个APK和仅一个 ＆LT;表明包=＆GT; 每页清单文件。因此只有一个每个APK实际的包？

我不希望每个应用程序的APK 2，我只希望每个应用程序的单个APK。

有没有办法实现这一目标？

解决方案

  

我想在两个不同的应用程序来实现共享preferences这个伟大的技术，同时还MODE_PRIVATE。

其实，就是这样一个反很好的技术，我只是删除了我的答案。使用的android：sharedUserId 是有风险的，和已经部署的应用程序完全不可能的。我了解到我在两年的方式错误，因为我已经张贴了我的答案在那里。

此外，该技术并不可靠地工作，因为你无法控制哪些应用程序在用户安装......和卸载。如果借助于应用程序A和应用B股preferences都使用App A的副本，那么当用户卸载应用程序A，应用B的大清洗。

  

因此​​只有一个每个APK实际的包？

正确的。

  

我不希望每个应用程序的APK 2，我只希望每个应用程序的单个APK。

有关两个应用程序，你有两个APK文件，每个都有自己的包名。

I am trying to implement this great technique of sharing preferences across two different applications while still MODE_PRIVATE.

My problem is that the first application cannot assume that the first application is installed (and vice versa) and so:

 Context c = createPackageContext("com.app.first", MODE_PRIVATE);

Must be replaced by:

 Context c = createPackageContext("com.app.shared", MODE_PRIVATE);

But that mandates adding that com.app.shared for real, which translates into a second APK?

In other words, there is only one AndroidManifest.xml per APK and only one <manifest package= > per manifest file. Therefore only one actual package per APK?

I don't want 2 APKs per application, I only want a single APK per application.

Is there a way to achieve this?

解决方案

I am trying to implement this great technique of sharing preferences across two different applications while still MODE_PRIVATE.

Actually, that is such an anti-great technique that I just deleted my answer. Using android:sharedUserId is risky, and downright impossible for already-deployed apps. I learned the error of my ways in the two years since I had posted my answer there.

Also, the technique doesn't work reliably, because you have no control over which apps the user installs... and uninstalls. If App A and App B share preferences by means of both using App A's copy, then when the user uninstalls App A, App B is hosed.

Therefore only one actual package per APK?

Correct.

I don't want 2 APKs per application, I only want a single APK per application.

For two applications, you have two APK files, each with their own package name.

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