Darkening a UIView
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by igul222
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Published on 2010-04-16T01:07:42Z
Indexed on
2010/04/16
1:13 UTC
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I'd like to "darken" a UIView by a certain amount. Right now, I'm doing the darkening like this:
UIView *overlay = [[UIView alloc] initWithFrame:mainView.bounds];
overlay.backgroundColor = [UIColor blackColor];
overlay.alpha = 0.5f;
[mainView addSubview:overlay];
Unfortunately, this also adds a semi-transparent black overlay to parts of mainView that are transparent. Is there any way to only darken the non-transparent sections?
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