android studio 无法在可视化页面预览布局文件或预览有偏移现象

Rendering Problems

the following classes could not be found:
android.support.v7.internal.widget.ActionBarOverlayLayout (Fix Build Path, Edit XML, Create Class)

Tip: Try to build the project

解决办法：把style文件中theme改一下在Theme.AppCompat.Light.DarkActionBar前面加上Base.  如下<!-- Base application theme. -->
<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
   <!-- Customize your theme here. -->
</style>