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Android applications are written in the Java programming language. Android应用是用Java 语言写的The Android SDK tools compile the code—along with any data and resource files—into anAndroid package, an

Android is a software stack for mobile devices that includes an operating system, middleware and key applications.Android是一个包括了操作系统，中间件和关键应用的移动设备软件集.The Android SDK provides the tools and APIs nec

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