获取android build-tools/platform-t

To install:

• Sources for Android 26 (sources;android-26)
• Android SDK Platform 26 (platforms;android-26)
• Android SDK Build-Tools 26.0.2 (build-tools;26.0.2)
  https://dl.google.com/android/repository/sources-26_r01.zip
  https://dl.google.com/android/repository/platform-26_r02.zip
  https://dl.google.com/android/repository/build-tools_r26.0.2-windows.zip

安装目录在：
SDK\sources\android-26
SDK\platforms\android-26
SDK\build-tools\26.0.2

platform-tools：
https://developer.android.com/studio/releases/platform-tools

这些tool都有镜像：
Index of /android/repository/
http://mirrors.neusoft.edu.cn/android/repository/?C=M&O=D