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Disappearing UILabel under iOS 4.3 (fine in iOS 5)

4
October 23, 2011

I noticed some UILabels in my iOS projects would disappear when run under iOS 4.3 after I upgraded to the Xcode 4.2 final revision with the GM iOS 5 SDK. I noticed that all the labels that were missing were in italics. Then I saw the reason out of the corner of my eye. Somehow in the Xcode 4.1 to 4.2 project conversion, the font properties on my labels were changed from System. Changing them back to “System” (or specifying the Helvetica family) fixes the invisible label.  Note that in this case, iOS 5.0 did add “Helvetica Light Oblique” as a font choice.

Disappearing UILabel

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Using iAds While Maintaining Backwards Compatibility

11
June 27, 2010

iAds are going to be all over apps in the AppStore in just a few short weeks as developers try to make some money from the average iPhone user. The only problem is that you won’t make any money unless the user is running iOS 4.0. Versions of the iOS prior to this don’t have the iAd framework and therefore can’t display ads. So what’s a developer who wants a few clams to do?
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Posted in: Technology | Tags: , , , , ,