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

Set 3 constraint

1.Leading space to superview

2.Trailing space to superview

3.Top space to superview

then

@property (nonatomic, strong) IBOutlet UILabel *lbl;

- (void) viewDidLoad{
   [self.lbl sizeToFit];
}