Android ADT, SDK, SDK_tool等官方下载链接（12.08.17更新）

android-sdk_r20

http://dl.google.com/android/android-sdk_r20-windows.zip
http://dl.google.com/android/android-sdk_r20-mac_x86.zip
http://dl.google.com/android/android-sdk_r20-linux_x86.tgz
 


Android SDK platforms
https://dl-ssl.google.com/android/repository/android-1.1_r1-windows.zip
https://dl-ssl.google.com/android/repository/android-1.1_r1-macosx.zip 
https://dl-ssl.google.com/android/repository/android-1.1_r1-linux.zip 
https://dl-ssl.google.com/android/repository/android-1.5_r04-windows.zip
https://dl-ssl.google.com/android/repository/android-1.5_r04-macosx.zip
https://dl-ssl.google.com/android/repository/android-1.5_r04-linux.zip
https://dl-ssl.google.com/android/repository/android-1.6_r03-windows.zip
https://dl-ssl.google.com/android/repository/android-1.6_r03-linux.zip
https://dl-ssl.google.com/android/repository/android-1.6_r03-macosx.zip
https://dl-ssl.google.com/android/repository/android-2.0_r01-linux.zip
https://dl-ssl.google.com/android/repository/android-2.0_r01-macosx.zip
https://dl-ssl.google.com/android/repository/android-2.0_r01-windows.zip
https://dl-ssl.google.com/android/repository/android-2.0.1_r01-linux.zip
https://dl-ssl.google.com/android/repository/android-2.0.1_r01-macosx.zip
https://dl-ssl.google.com/android/repository/android-2.0.1_r01-windows.zip
https://dl-ssl.google.com/android/repository/android-2.1_r03-linux.zip
https://dl-ssl.google.com/android/repository/android-2.2_r03-linux.zip
https://dl-ssl.google.com/android/repository/android-2.3.1_r02-linux.zip
https://dl-ssl.google.com/android/repository/android-2.3.3_r02-linux.zip
https://dl-ssl.google.com/android/repository/android-3.0_r02-linux.zip
https://dl-ssl.google.com/android/repository/android-3.1_r03-linux.zip