My app now supports iOS7.0+, and I want to cover the area outside of safe area with black color, so the bottom 34 height area should look well. But I get so many controllers to change, is there a shortcut? I've searched many guides, but it all just introduced how to created a new pretty controller view in iphone X. What I want to do make all old views behave well inside safe area.
----------Update I tried a way, add a black view to the key window, and set the additional insets in customized root controller, but 1) the bottom aligned button is covered by the black view when a controller view does not contain the scroll view. 2) If scroll view is contained, then how would the additional insets effect the scroll view.