Setting alpha on UIView sets the alpha on its subviews which should not happen

Question

According to the documentation for UIVIew @property(nonatomic) CGFloat alpha

The value of this property is a floating-point number in the

Answer 1

In Swift 4.2 and Xcode 10.1

Don't add colour and alpha value through storyboard. Only programmatic approach will work in this case.

transparentView.backgroundColor = UIColor.black.withAlphaComponent(0.5)