You need to do next:
File->Import (android-sdk\extras\android\support\v7)
. Choose “AppCompat”Project-> properties->Android.
In the section library “Add” and choose “AppCompat”- That is all!
Note: if you are using “android:showAsAction” in menu item, you need to change prefix android as in the example http://developer.android.com/guide/topics/ui/actionbar.html