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POHow to use a ViewController as a AppDelegate?
 

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  1. POHow to use a ViewController as a AppDelegate?
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    <p>I made a book for children. Every page is a ViewController. In the beginning, I did all the switching of the ViewControllers in the AppDelegate, but after having troubles with AutoRotation i did all the switching in another ViewController called ViewControllerSwitch. Before, the code was like this. In the AppDelegate:</p> <pre><code>- (void)goToNextPage3 { self.view3 = [[[ViewController3 alloc] init] autorelease]; view3.view.frame = CGRectMake(769, 0, 768, 1024); [window addSubview:view3.view]; [UIView …SomeAnimationStuff...];   [UIView setAnimationDidStopSelector:@selector(animationDidStop3:finished:context:)]; }  - (void)animationDidStop3:(NSString *)animationID finished:(NSNumber *)finished context: (void *)context { [self.view1a.view removeFromSuperview]; self.view1a = nil; } </code></pre> <p>And here is the code from one of my view controllers ("pages") called ViewController1a:</p> <pre><code>- (void)buttonClicked { MyBookAppDelegate* next2 =(MyBookAppDelegate *) [[UIApplication sharedApplication] delegate]; [next2 goToNextPage3]; } </code></pre> <p>This worked like a charm.</p> <p>Now all my switching is in ViewControllerSwitch. How should I change the code in ViewController1a to access goToNextPage3?</p> <p>I tried this:</p> <pre><code> - (void)buttonClicked { ViewControllerSwitch* next2 = (ViewControllerSwitch *) [[UIApplication sharedApplication] delegate]; [next2 goToNextPage3]; } </code></pre> <p>It gives me a SIGABRT at [next2 goToNextPage3].</p> <p>Any ideas?</p> <p><strong>Update:</strong> </p> <p>i am still trying, so now i did this:</p> <p>in my Viewcontroller1a.h:</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import "ViewControllerSwitch.h" @class ViewController2; @class ViewControllerSwitch; @protocol ViewController1Delegate; @interface ViewController1a : UIViewController { id&lt;ViewController1aDelegate&gt;myDelegate; } @property(nonatomic, assign)id&lt;ViewController1Delegate&gt;myDelegate; @end @protocol ViewController1Delegate -(void)goToNextPageV; @end </code></pre> <p>and in my .m file:</p> <pre><code>- (void)buttonClicked { [self.myDelegate goToNextPageV]; } </code></pre> <p>i know there is something missing in the ViewControllerSwitch but i don´t know what.</p>
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