title: How to bring UIButton to front of Mapbox view
body: <p>I am using Mapbox SDK (SWIFT) and created my custom map. I added a button and image on the map in storyboard but when I run the application it seems like it is hidden behind. I tried everything including <code>view.bringSubview(toFront:UIimage)</code> and I can't use this function with a UIButton. I even tried sending the map to the backView but it messes up my custom map and still don't see my image or button. Please help! Thank you.</p>