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

You can use grepcode to see Android source code

For example you want want to see ActionBarActivity.java source code in version 19.0.1 and 20.0.0 in support.appcompat-v7 .

Well API 19.0.1 will be Android version 4.4 as seen from Wiki

Now you can pick desired android version from grepcode. For example you can see Android 4.4 (Api 19) source code on grepcode here

Next you can see source code for ActionBarActivity inside support package

Similarly you can see Android source code for different build versions without IDE.