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    <blockquote> <p>a) How do I know which instances of a class work with the appearance property? For e.g. since UITableView conforms to the UIAppearance protocol I was thinking I could do something like</p> </blockquote> <p>You look in the header of the class (and the headers of all the superclasses). Any method that has <code>UI_APPEARANCE_SELECTOR</code> next to it is supported for use with the <code>UIAppearance</code> proxy.</p> <pre><code>[[UITableView appearance] setBackgroundColor:mytableViewColor]; </code></pre> <p>The <code>backgroundColor</code> property is not decorated with <code>UI_APPEARANCE_SELECTOR</code> in <code>UIView.h</code>. Thus it is not technically supported for use with the appearance proxy. It will <em>probably</em> work, but (given the lack of method decoration) isn't guaranteed to.</p> <p>From the <code>UIAppearance Protocol Reference</code>:</p> <blockquote> <p>To support appearance customization, a class must conform to the <code>UIAppearanceContainer</code> protocol and relevant accessor methods must be marked with <code>UI_APPEARANCE_SELECTOR</code>.</p> </blockquote> <p>(note "<strong>and</strong> relevant accessor methods <strong>must</strong> be marked..." [emphasis added])</p> <hr> <blockquote> <p>b) Is there a list of all properties that are manipulatable with the appearance property?</p> </blockquote> <p>Is there a single page showing every setter that works with the appearance proxy? I don't know of one, nor is there a way to build the list at runtime.</p> <hr> <blockquote> <p>c) At what point is the appearance customization being called? I was hoping to make changes threw the appearance property at runtime, but unfortunately the changes aren't taking place.</p> </blockquote> <p>You can use the appearance proxy at any point during execution. The changes won't be applied to the affected views until the next time those views have their <code>-layoutSubviews</code> method invoked.</p>
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    1. USDave DeLong
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    1. COThere's a list of UIAppearance supporting classes now. You can [see it here](http://blog.mosheberman.com/list-of-classes-that-support-uiappearance-in-ios-5/). Might want to update your answer.
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      1. USMoshe
    2. COC) I'm experiencing that changes are not applied until the next time -layoutSubviews is applied **In the next run loop**. Anyone else experiencing this?
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      1. USAdam Ritenauer
 

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