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POUIButton with background image: title text randomly does not appear
 

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  1. POUIButton with background image: title text randomly does not appear
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    <p>I am setting the background image on a UIButton which has title text. This works fine, except that about 5% of the time, rarely and non-deterministically, with the same code, the text does not appear.</p> <p>In my UIButton subclass:</p> <pre><code>[self setBackgroundImage:normalImage forState:UIControlStateNormal]; // Also set a background image for all other states. </code></pre> <p>In a UIButton category, I have this convenience method for setting the title:</p> <pre><code>- (void)setNormalTitle:(NSString *)title { [self setTitle:title forState:UIControlStateNormal]; [self setTitle:title forState:UIControlStateSelected]; [self setTitle:title forState:UIControlStateHighlighted]; [self setTitle:title forState:UIControlStateSelected | UIControlStateHighlighted]; } </code></pre> <p>I'm not finding this issue having been encountered by anyone. Any ideas? I can always create a custom UIView which contains the button and draws text on top using a UILabel, but I wonder if there's a known issue I'm encountering here.</p> <p><strong>Update</strong>: I seem to have worked around the issue by setting the title asynchronously:</p> <pre><code>_tabCell = loadTopNibObject(@"MYTabSmall3HeaderCell"); dispatch_async(dispatch_get_main_queue(), ^{ _tabCell.tab0Button.normalTitle = @"Option 1"; _tabCell.tab1Button.normalTitle = @"Option 2"; _tabCell.tab2Button.normalTitle = @"Option 3"; }); </code></pre> <p><strong>Update 2</strong>: Nope, the above doesn't work. I've breakpointed and printed out the empty button's text, which reports the correct string even though the button appears blank. I've also tried running <code>setNeedsDisplay:</code> when the button is touched, to no avail. Also tried re-setting the button text to some specific string (e.g. <code>@"test"</code>) on touch but this doesn't kick in any visible letting.</p>
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    1. COAre you sure that whatever "title" you are passing into setNormalTitle is never nil or empty??? I would NSLog the title when it comes in...
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    2. COLogged and added some asserts to make sure the title is never nil or an empty string, and I'm getting the same result. In fact I tried hardcoding the title value in the above to be a specific string, and the problem still happens.
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