http://d.apkbus.com/android/category/actionbar
https://github.com/Trinea/android-open-project
http://www.23code.com/page/2/
https://github.com/googlesamples
http://blog.csdn.net/dajian790626/article/details/36207521
http://code.taobao.org/p/cnAndroidSDK/src/trunk/dev/java/android/
http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/5.1.1_r1/org/chromium/content/common/IChildProcessCallback.java?av=f
http://blog.csdn.net/ns_code?viewmode=contents