An early look at the the Android SDK is alsoavailable. It includes sampleprojects with source code, development tools, an emulator, and of course allthe libraries you will need to build an Android application.

• 一个可供早期研究android SDK已经发布，它包括示例项目（含源代码）、开发工具、模拟器，当然也包括开发android应用时所需要的各种库。