ios - 在导航栏上关闭半透明会使 View 不对齐

Question

我创建了带导航栏的布局，并将导航栏半透明设置为不透明。我添加了这段代码:

var overlay : UIView? // This should be a class variable

overlay = UIView(frame: view.frame)
overlay!.backgroundColor = UIColor.blackColor()
overlay!.alpha = 0.8

view.addSubview(overlay!)

如果我理解正确，这应该会覆盖我的 View 。但它给了我这样的结果: 所以我认为这与我的观点不一致。知道如何解决这个问题吗？

Answer 1

Its is happening because view origin changes if you set translucent off. So Instead of using view.frame use view.bounds.

var overlay : UIView?

overlay = UIView(frame: view.bounds)
overlay!.backgroundColor = UIColor.blackColor()
overlay!.alpha = 0.8

view.addSubview(overlay!)