How can I get the frame of a UIView subclass using Autolayout with Storyboard?

Question

When I use a subclass of UIView and put it on the storyboard with some constraints,i check its frame in awakeFromNib() or didMoveToWindow() . The result is not correct cause the constraints are not applied yet.

Is there any callback to inform me that the constraints are applied? So after that i can do sth with the correct frame.

Answer 1

When awakeFromNib viewDidLoad or didMoveToWindow is called, layout is not completed yet. You have to use viewDidLayoutSubviews of a viewController. This method will be called after applying constraints and completing layout.

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
}