Android Support v4: This package is designed to take care of 1.6 and later versions, and this package is the most widely used, and the Eclipse new project comes with the default.
Android Support V7: This package is designed to take care of 2.1 and later versions, but does not include lower, so if you do not consider 1.6, we can use this package, plus
Note thatV7 is dependent on the V4 of this package, that is, two must be included at a time.
Android Support V13: This package is designed for Android 3.2 and later, generally we are not used, tablet development can be used.
Android Support Library-Open source China community
http://my.oschina.net/xinxingegeya/blog/280722
Android Support Library Setup
Http://www.csdn.net/tag/v4.v7.v8.v13
http://blog.csdn.net/crazybigfish/article/details/18554201
http://blog.csdn.net/crazybigfish/article/details/18552305
http://blog.csdn.net/crazybigfish/article/details/18363351
Sidebar (using extensions provided with support Library 4)-Android Tutorial-Android Development Forum-Android Development Forum-Mobile Internet portal-Android forum-Powered by discuz!
Http://www.apkbus.com/android-117148-1-1.html
Support V4 V7 v13:android Support Library