When I add this line to my ActionBarStyle: 

```
  <item name="android:windowActionBarOverlay">true</item>

```

and in my layout I add this :

```
  android:paddingTop="?android:attr/actionBarSize"

```

The ActionBar won't be transparent.
picture : ![enter image description here](https://i.stack.imgur.com/wARdx.png)