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POCustomizing UISegmentedControl in iOS 5
 

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  1. POCustomizing UISegmentedControl in iOS 5
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    <p>Here is my problem. I am customizing a UISegmentedControl by setting the background and divider images in the following way:</p> <pre><code>[[UISegmentedControl appearance] setDividerImage:segmentUnselectedUnselected forLeftSegmentState:UIControlStateNormal rightSegmentState:UIControlStateNormal barMetrics:UIBarMetricsDefault]; [[UISegmentedControl appearance] setDividerImage:segmentSelectedUnselected forLeftSegmentState:UIControlStateSelected rightSegmentState:UIControlStateNormal barMetrics:UIBarMetricsDefault]; [[UISegmentedControl appearance] setDividerImage:segUnselectedSelected forLeftSegmentState:UIControlStateNormal rightSegmentState:UIControlStateSelected barMetrics:UIBarMetricsDefault]; [[UISegmentedControl appearance] setBackgroundImage:segmentUnselected forState:UIControlStateNormal barMetrics:UIBarMetricsDefault]; [[UISegmentedControl appearance] setBackgroundImage:segmentSelected forState:UIControlStateSelected barMetrics:UIBarMetricsDefault]; </code></pre> <p>When I try to make the 1st segmented selected within <code>viewDidLoad</code></p> <pre><code>self.segmentedControl.selectedIndex = 1; </code></pre> <p>I get the following weird thing:</p> <p><img src="https://i.stack.imgur.com/x3zOB.png" alt="enter image description here"></p> <p>instead of: </p> <p><img src="https://i.stack.imgur.com/abymP.png" alt="enter image description here"></p> <p>Does anyone know if this is a bug and how could I provide a bug report? If not, what could be wrong with my code?</p>
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    1. CODo I gather correctly that your control looks fine when you manually tap one of the segments after your view has loaded? Or does it always look as in your first image?
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    2. COYou are right. It looks like this the very first time the class is loaded and the value is manually set. Then later in the application if the user taps on any of the segments, then it looks fine. Also, if there are two segmented controls and user changes value of the first and I programmatically change the value of the second due to some logic, then it looks fine too. I am using iOS 4.2 SDK on Snow Leopard.
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    3. COIt seems that the control is using the wrong divider image at the start (it's using the one for unselected/unselected instead of unselected/selected). At what point exactly in your application's lifecycle are you setting the appearance of the UISegmentedControl?
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