Android platform是一个用于开发移动程序的软件包，它包括了操作系统、中间件及一些关键应用。开发者能使用android SDK为Android platform开发应用，这些应用使用JAVA语言书写，运行在虚拟机Dalvik(一个专为手机程序开发的基于linux内核的JAVA虚拟机)。-Android platform is a mobile program for the development package, which includes the operating system, middleware and key applications. Developers can use the android SDK for the Android platform development of applications that use the JAVA language writing, running in a virtual machine Dalvik (a program developed specifically for mobile phones based on linux kernel of the JAVA virtual machine).