Android SDK给你提供开发测试所必须的Android API类库，开发工具
要下载最新的 Android SDK, 请访问 developer.android.com/sdk/ 如因特殊原因无法访问，可以使用VPN网络。
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You'll soon be developing apps for Android! Once the download completes, you need to follow a few steps to set up your environment.
To continue, follow the guide to Installing the SDK.
Note: Eclipse 3.5 (Galileo) is no longer supported with the latest version of ADT.
Note: Some Linux distributions may include JDK 1.4 or Gnu Compiler for Java, both of which are not supported for Android development.