What should image sizes be at @1x, @2x and @3x in Xcode?

Question

For example, I have a 100*100 size imageview or button, and I want to set its image or backgroundImage with a local .png file. Based o

Answer 1

Use the assets catalog. Xcode will manage the @1x, @2x, @3x easilly, and tell you the dimensions for the images.

With it it's easy to manage the AppIcon and LaunchScreen images.