AutoLayout setting UILabel height to zero

Question

I have a UILabel for item description amongst other views, all laid out using constraints in Interface Builder - you can see all relevant constraints in the image b

Answer 1

I think you need to set 5 constraints on your label :

• Leading space to superview
• Trailing space to superview
• Vertical space to "Item"
• Vertical space to "Name"
• Height

Then add an IBOutlet in your controller on the constraint height (let's say labelHeight).

So in your viewDidLoad you will be able to set this constraint value:

@property (weak, nonatomic) IBOutlet UILabel *label;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *labelHeight;


- (void) viewDidLoad{
   [self.label sizeToFit];
   labelHeight.constant = self.label.frame.size.height;
}