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POiOS who is file owner of subview?
 

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  1. POiOS who is file owner of subview?
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    <p>I am newbie in iOS development and I have a problem to understand file owner logic.</p> <p>I have this situations:</p> <p>I have two views (View_iPad, View_iPhone) and their controllers (ViewController_iPad, ViewController_iPhone). Based on a device where app is launched, particular view and its controller is used. Then, I add a subview from xib file to this view (it doesn't matter if iPad or iPhone view is used). Let's say that there is a different position of this subview in iPad and iPhone view. This subview contains some labels, so I have to create IBOulets in subviews controller.</p> <p>If I understand, according to apple's logic, file owner of view is a controller (file which has access to this view and can communicate with it). So each of 3 views (iPhone, iPad, subview) has its own controller, it means that these controllers are file owners of these views.</p> <p>But when I load subview with code: </p> <pre><code> NSArray *nibContents = [[NSBundle mainBundle] loadNibNamed:@"subview" owner:self options:nil]; </code></pre> <p>and add it as a subview to iPad/iPhone view, there is a problem because this subview contains IBOutlets for labels and this labels are in subview controller and not in a iPhone/iPad controller.</p> <p>This error is shown then:</p> <blockquote> <p>Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;__NSCFConstantString 0x7ab4> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key view.'</p> </blockquote> <p>How can I solve this? I tried to put as a owner @"subviewController" but it didn't help. Thank you.</p> <p><strong>EDIT!!:</strong> So I was trying to solve this but still it doesn´t work. Here is a new situation:</p> <p>Subview controller is owner of the subview but custom class of the root view is a class (derived from UIView) which contains outlets.</p> <p>If I have in iPad/iPhone controller owner:@"subviewController", Igot this error:</p> <blockquote> <p>Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;__NSObject 0x715bf30> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key view.'</p> </blockquote> <p>Where the view is a property from subview controller. Now tell me where is the problem. I am really desperate!</p> <p>Or If I have owner:self, some window with instructions is opened with EXC_BAD_ACCESS error.</p>
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    1. COTwo questions: 1) In which class is the ` NSArray *nibContents = ` line executed (i.e., what is the value of self) and 2) Where is the exception fired? To find out set an exception breakpoint on 'throw'.
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    2. CO1) Depends on which device the app is launched. Self is either ViewController_iPad or ViewController_iPhone. 2) Exception is fired in the line with loadNibNamed.
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