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POUITextFieldDelegate Causes Exception
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copied!<p>Simple Case. I want to create a UIViewController displaying and reacting to the input of a simple UITextField. </p> <ol> <li>I created a UIViewController including the <strong>xib</strong> file. </li> <li>In Interface Builder I added a <strong>View</strong> and a containing <strong>UITextField</strong>. </li> <li>The <strong>File's Owner</strong> is set to the according class name that contains the logic "CardViewController". </li> <li>The File Owner points to the View as view. </li> <li>The <strong>text field</strong> uses the <strong>File's Owner</strong> as <strong>delegate</strong>.</li> </ol> <p>It looks like this...</p> <p><img src="https://i.stack.imgur.com/WCMvs.png" alt="enter image description here"></p> <p>The view is being displayed correctly, but as soon as I tap the textfield the application crashes with an exception "EXC_BAD_ACCESS...."</p> <p>My guess is that there's something wrong with the assignement of the delegate, but I have problems finding the issue. Any idea? What did I miss?</p> <hr> <p>Further Findings. When I instantiate this viewcontroller directly <strong>in the AppDelegate the delegation of the UITextField actually works!</strong>!</p> <p>But what I actually plan to do to create an instance of a "BoardViewController" class first which then creates "CardViewController" objects. Having this kind nesting causes the delegation to fail.</p> <p>As a reference. In my App Delegate:</p> <pre><code>BoardViewController *bvc = [[BoardViewController alloc] init]; [self.window setRootViewController:bvc]; </code></pre> <p>in the Board Class I have a "add" button that triggers the creation of the CardViewControllers</p> <pre><code>-(void) addCard:(id)touchEvent{ NSLog(@"<Board> Add"); CardViewController *cvc = [[CardViewController alloc]init]; [self.view addSubview:cvc.view]; } </code></pre> <p>and then the CardViewController looks as mentioned at first with the delegation being set in the xib.</p>

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