如何运行外，下载Android上尚未安装的应用程序？ [英] How to run external, downloaded yet not installed apps on Android?

问题描述

我只是好奇：

有些应用程序，通常是开发商，允许其他下载示例应用程序并执行示例应用程序不进行安装。

Some apps , usually for developers, allow to download other sample apps and execute the sample apps without installing them.

有这样的应用程序的一个例子是酷<一href="https://play.google.com/store/apps/details?id=com.inappsquared.devappsdirect">DevAppsDirect"应用程序（强烈推荐BTW）。

An example for such an app is the cool "DevAppsDirect" app (highly recommend it BTW) .

我的问题是：

如何做这样的应用程序工作？

How do such apps work?

我的意思是，他们下载的APK？他们如何跳过安装阶段，并以某种方式运行下载的应用程序？难道他们不知何故与下载的内容合并？难道喜欢一个插件？

I mean , do they download the APK ? How do they skip the installation phase and somehow run the downloaded apps ? Do they somehow merge with the downloaded content? Is it like a plugin?

这样的事情能够为应用程序需要插件和扩展，也许其他的想法，我不能去想是有用的。

Such a thing could be useful for apps that require plugins and extensions, and maybe other ideas that I can't think about.

我也想知道怎么做的其他应用程序使用的插件机制。许多应用程序允许通过Play商店下载其他插件，应用程序。做他们以某种方式运行一些code。在其他的apk文件？可他们甚至到达其他的apk文件？有没有办法告诉机器人哪些应用程序可以访问我的APK文件？

i also wonder how do other apps use a plugins mechanism. many apps allow to download other plugins-apps via the play store. do they somehow run some code in the other apk files? can they even reach the other apk files ? is there a way to tell android which apps can access my apk file ?

推荐答案

您可以使用Android的类装载器（在这种特定情况下可能是PathClassLoader）动态加载类在运行时不进行安装。

You can use Android's class loaders (in this particular case probably the PathClassLoader) to dynamically load classes at runtime without installing them.

看看如<一href="https://github.com/Rookery/AndroidDynamicLoader">https://github.com/Rookery/AndroidDynamicLoader看看这可怎么实现的。

Take a look at e.g. https://github.com/Rookery/AndroidDynamicLoader to see how this can be implemented.

插件的apk甚至都不需要的东西，复杂，但可以只​​通过发送到出口的活动意图沟通，调回结果。您可以使用PackageManager（<一href="http://developer.android.com/reference/android/content/pm/PackageManager.html">http://developer.android.com/reference/android/content/pm/PackageManager.html)要查询哪些的Intent活动的登记。

Plugin apk's might not even need something that complicated but can just communicate via Intents sent to exported activities and posted back results. You can use PackageManager (http://developer.android.com/reference/android/content/pm/PackageManager.html) to query for which intents activities are registered.

这篇关于如何运行外，下载Android上尚未安装的应用程序？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！