Background image size Sprite Kit Game

Question

i just started a new Sprite Kit project to learn how to use it. I watched and read a lot of tutorials but no tutorial has a answer for my question/problem.

I want to

Answer 1

This line returns size in points, not pixels. This is made because different devices have different resolutions, but will have same sizes in points. On non retina devices 1 point is 1 pixel and on retina devices 1 point is two pixels. Thats why you get this size from

SKScene * scene = [MyScene sceneWithSize:skView.bounds.size];

You don't want to double the size of scene since it will just be our of bounds of your screen, invisible.