I was trying to update the icon of my app in LaunchScreen, turned out that the UIImage doesn't update for the situation that a user update from old version to new version, and I searched on web for some solutions, there is one suggesting that I should load image files that are out of the *.xcassets folder, I know how to put the image files to my project root directory, but I don't know how to load it in storyboard, as LaunchScreen.storyboard can't have a view controller class
So my question is: How to reference image files in storyboard
This is the source link: http://arsenkin.com/launch_screen_image_cache.html