Xcode Swift initial view incorrectly sized -

Xcode Swift initial view incorrectly sized -

when app starts, view looks this:

then when alter views using code:

let skview = self.view! skview var scene: titlescene! scene = titlescene(size: skview.bounds.size) skview.presentscene(scene, transition: transition)

and alter initial screen 1 time again using above technique, screen looks this:

why zoomed out? how can create sizing remain consistent across views?

put line in viewdidload method:

self.size = view.bounds.size

xcode swift