Swift UIView background color opacity

Question

I have a UIView with a UILabel in it. I want the UIView to have white background color, but with an opacity of 50%. The problem whith setting view.alpha = 0.5 is that the label will have an opacity of 50% as well, so I figured out that it maybe would be possible to have a UIView with white background color and opacity (white_view), and then have another UIView with the label (label_view). Then add the "white_view" to "label_view" by doing this: label_view.addSubview(white_view). This apparently doesn't work. I'd like to do like: label_view.backgroundView(white_view) but you can't set a background view on a UIView like you can do in a UICollectionView for instance.

Does anyone have any clue of how to solve this?

EDIT Because several answers are approx the same I'll type it here. Now I've tried even these:

label_view1.backgroundColor = UIColor.whiteColor().colorWithAlphaComponent(0.5)
label_view1.addSubview(firstPlacelbl)
endGameView.addSubview(label_view1)

and

label_view1.backgroundColor = UIColor(white: 1, alpha: 0.5)
label_view1.addSubview(firstPlacelbl)
endGameView.addSubview(label_view1)

And still the label is also affected by the alpha, and it gets an opacity of 50%. I don't get it what I do wrong because I only set the colors alpha to 0.5 and not the labels. Any ideas?

Answer 1

You can set background color of view to the UIColor with alpha, and not affect view.alpha:

view.backgroundColor = UIColor(white: 1, alpha: 0.5)

or

view.backgroundColor = UIColor.red.withAlphaComponent(0.5)