public int getPixelInsetTop(boolean withActionBar) {
            return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);
        }
Get the layout inset for any system UI that appears at the top of the screen.

@param withActionBar True to include the height of the action bar, False otherwise.
@return The layout inset (in pixels).
app/src/main/java/com/zhao/myreader/util/SystemBarTintManager.java