Android SDK version and ADT version

Android Early version number is a bit "confusing", such as Android 2.2 corresponding to the ADT version of ADT-0.9.9
The version of ADT that corresponds to Android 2.3 suddenly jumps to adt-8.0.0.zip.

And the Android SDK also contains SDK tools and SDK platform two things, they have different meanings, they also have their own version number, so some people are easily confused here, the corresponding relationship between them for a brief summary:

The corresponding relationship between the Android platform and the SDK tools version and the ADT version

Version ADT version of the Android platform SDK Tools
Android 2.2 R7 ADT-0.9.9
Android 2.3 R8 ADT-8.0.1
Android 3.0 Preview R9 ADT-9.0.0
Android 3.0 R10 ADT-10.0.0
Android 3.1 R11 ADT-11.0.0

Android 3.2 R12 ADT-12.0.0

Android 4.0 R14 ADT-14.0.0

SDK platform version, and API version

Android platform                   api level
Android 2.0.11                API6
Android 2.1-update1      API7
Android 2.2                      API8
Android 2.3                       API9
Android 2.3.3                   api10 
Android 3.0                      API11
Android 3.1                      API12

Android 3.2 API13

Android 4.0 API14

Android SDK version and ADT version