Xcode 8 layout engine changes

[alexandre-g]

Due to some changes in how Autolayout works with new storyboard format in Xcode 8, CKTextField with constraints does not show unless misplaced on storyboard as gets 0,0, 1000, 1000 frame by default.

See http://stackoverflow.com/questions/39503572/xcode-8-uibuttons-with-constraints-not-showing-up/39548367#39548367

For my project I've solved by setting the frame in layoutSubviews: (mind the differences from repo)

if (self.acceptButton) {
    CGFloat width = self.bounds.size.height - 5;
    self.acceptButton.frame = CGRectMake(self.bounds.size.width - width - 3, 3, width, width - 1);
    self.acceptButton.layer.cornerRadius = (self.bounds.size.height - 6.0) / 2;
}

Is there a better way?

[JaNd3r]

I'm currently in the process of migrating an app from Swift 2 / iOS 9 to Swift 3 / iOS 10 and will have a look at it.