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POViewController added as a subView getting released too soon
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copied!<p>I am trying to optimize the code in my app. I have quite a few ViewControllers which all use a common "keypad". I wanted to extract the keypad into a separate ViewController and then include it into the existing ViewControllers. This way I could obliviate duplicate code (which was needed to deal with the reactions from the keypad) in the separate ViewControllers.</p> <p>So in the KeyPadVC I have methods set up that look something like this.</p> <pre><code>-(IBAction)keyPadKeyPressed:(id)sender { [self.delegate interpretKeyPressed:[[sender titleLabel] text]]; } </code></pre> <p>In my "parent" ViewControllers I include the keypad by adding a subview to a plain UIView that I placed in Interface Builder (so that I have a visual placeholder) and hooked up to the variable <code>keypadView</code>.</p> <pre><code>-(void) viewDidLoad { [super viewDidLoad]; KeyPadViewController *kpVC = [[KeyPadViewController alloc] init]; [kpVC setDelegate: self]; [[self keypadView] addSubview:[kpVC view]]; } </code></pre> <p>This displays fine, but when I press a button on the KeyPadViewController I get a zombie object because the object was already released. I then tried to declare <code>KeyPadViewController *kpVC</code> in the <code>@interface</code> and tried a self instantiating method like: </p> <pre><code>-(KeyPadViewController *)kpVC { if (!kpVC) { kpVC = [[KeyPadViewController alloc] init]; } return kpVC; } </code></pre> <p>I obviously modified the <code>viewDidLoad</code> method, but the result was always the same. The object gets released too soon. If I add NSLogs I can see that <code>-(IBAction)keyPadKeyPressed</code> from the KeyPadVC never gets called, because it KeyPadVC was already released. </p> <p>What am I doing wrong? I am using ARC and iOS6 SDK.</p> <p>Thanks</p> <p>PS: this is pseudo-code to make things shorter - hope there are no typos - if so then that is not the issue. :)</p>

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