UIView in XIB using Autolayout is always 600x600

Question

I created a separate .xib because I wanted to design a UIView with autolayout outside of a viewController. I created the .xib, added the UIView and the constraints, using wCompact hRegular. Simple.

Then add it to my viewController in viewDidLoad:

UIView *header = [[[NSBundle mainBundle] loadNibNamed:@"HeaderSearch" owner:self options:nil] lastObject];
NSLog(@"%@", NSStringFromCGRect(header.frame));
[self.view addSubview:header];

But, when it is added, the frame size is 600x600 and I cannot figure out why.

What have I done wrong here that is forcing this strange size?

Answer 1

You need to uncheck 'Use size classes' in your xib

and the view frame size will be the one you set and not 600x600

Answer 2

Please refer to this.

header.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:header];

NSLayoutConstraint *widthConstraint = [NSLayoutConstraint constraintWithItem:self.view attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:header attribute:NSLayoutAttributeWidth multiplier:1.0 constant:0];
[self.view addConstraint:widthConstraint];

NSLayoutConstraint *heightConstraint = [NSLayoutConstraint constraintWithItem:header attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:130.0];
[self.view addConstraint:widthConstraint];
[self.view addConstraint:heightConstraint];