ios - UIVIew size use device size in interface builder and no constraint -

i have following scene in interface builder.

and following code in viewdidload function of controller

print(string.init(format:"basecircleview width %f height %f", basecircleview.bounds.size.width, basecircleview.bounds.size.height)) print(string.init(format:"userdrawingview width %f height %f", userdrawingview.bounds.size.width, userdrawingview.bounds.size.height)) print(string.init(format:"view width %f height %f", self.view.bounds.size.width, self.view.bounds.size.height)) 

when launch app (on iphone6 simulator "view : iphone se" selected in storyboard), have following in console :

basecircleview width 320.000000 height 504.000000

userdrawingview width 320.000000 height 504.000000

view width 375.000000 height 667.000000

i not understand why 2 views infer sizes device "view : iphone se" selected in storyboard , not superview.

can me figure what's wrong ?

you should test constraints @ viewdidlayoutsubviews.

here blog post additional info uiviewcontroller lifecycle: https://blog.caramba.io/ios-uiviewcontroller-lifecycle-261e3e2f6133