How to find every version of android support libraries source code

Question

I meets some problems so I want to find the source code of the Android support libraries . For example , I want to read the ActionBarActivity.java source code in version 19.

Answer 1

If you have downloaded the sources, you should be able to find them versioned at one of these three places (using OSX, but should be familiar enough to deduce the OS locations)

Android Sources

~/Library/Android/sdk/sources/

Maven Local Repo

~/.m2/repository

Gradle Cache (location could probably be a different name)

~/.gradle/caches/modules-2/files-2.1

Using either of these, it shouldn't be too hard to do a diff of the source code that you need.