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POLaying out & sizing of subviews in a UIViewController
 

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    <p>I have an app with with a <code>UITabController</code> and each tab is a <code>UINavigationController</code>. The root of one of my <code>UINavigationControllers</code> is a <code>UIViewController</code>.</p> <p>Inside that view controller's view, I want to layout some subviews, but I'm confused as to where &amp; how to lay them out in a way that will be resolution independent (i.e. not hardcode values such as 320px, 480px, 44px, etc.).</p> <p>When the view is fully loaded and presented on a vertical iPhone, it's height will be 367px = 480 - 20 (status bar) - 44 (nav bar) - 49 (tab bar).</p> <p>Inside the view controller, I currently create all my subviews within the <code>viewDidLoad</code> method. However, it appears that within this method, the view's current height is 460px (<code>self.view.bounds.size.height</code>). So when setting up my subviews, I cannot properly calculate the sizes of anything.</p> <p>Within the <code>viewWillAppear:</code> method, the view <strong>does</strong> know it's proper size, but that would mean setting &amp; calculating the subview's frames every time the view will appear (e.g. tab changes or popping from child view controllers on the navigation stack.</p> <p>Is the only way to do this properly to layout in <code>viewWillAppear:</code>?</p> <p>I have tried using the autoresizing properties (parent's <code>autoresizesSubviews</code> &amp; <code>autoresizingMask</code>) but they don't seem to work at all!? Do these only take effect once the view is all setup and then it is resized (manually / orientation change?).</p> <p>I'd be grateful if someone could let me know why the autoresizing isn't working, and how best to lay things out by not hardcoding any sizes.</p>
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