ANDROID--V4 V7 V13

Support Library

Android Support V4 : 

Used on API Lever 4 (i.e. Android 1.6) or later. It contains relatively more content and is used more broadly, for example: Fragment,notificationcompat,loadbroadcastmanager,viewpager,pagetabstrip,loader, Fileprovider, etc.

Gradle Reference Method:

compile ‘com.android.support:support-v4:21.0.3‘

Android Support V7 :

This package was designed to consider API Level 7 (i.e. Android 2.1) and above, but V7 relies on V4 for this package, V7 supports action bar and some theme compatibility.

Gradle Reference Method:

compile ‘com.android.support:appcompat-v7:21.0.3‘

Android Support V13 :

3.2 and later, generally we are not used, flat-panel development can be used.

ANDROID--V4 V7 V13