The difference between Android V4, V7, V13

Android Support V4 : This package is designed to take care of 1.6 and later versions, This package is the most widely used, Eclipse new project when the default comes with.

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 add this package, in addition, note that V7 is to rely on V4 This package, that is, two must be included at the same time.

Android Support V13 : This package is designed for Android 3.2 and later, generally we are not used, tablet development can be used.

1, why still use V7? V4 backwards compatible versions are not more?

The V7 version is not intended to provide something that V4 does not provide, it is not a patch. V7 later if you create a project, it will create a fragmentactivity for you.

In other words, all the interfaces of Android development in the future can be fragment mode. V7 is a new framework and a better solution.

The difference between Android V4, V7, V13