如何使用自动布局根据其子视图调整父视图的高度？

Question

I have cutomized a view, whose subviews's height will dynamically change. My intention is to let the view's height adjust to its subviews' height by using auto layout.

Answer 1

One simple way to do it:
1. Set the view's height constant in storyboard
2. Import that constraint as an outlet

@property (weak, nonatomic) IBOutlet NSLayoutConstraint *viewHeight;

3. As your subViews change height change the value of the outlet
   

self.viewHeight.constant = firstSubView.frame.size.height + secondSubView.frame.size.height;

Should work.