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POdelegate method throws runtime "unrecognized selector" error when switching back from one UIViewController to the main View Controller
 

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  1. POdelegate method throws runtime "unrecognized selector" error when switching back from one UIViewController to the main View Controller
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    <p>Ok, I've spend like half day on this and it's killing me.</p> <p>So I've got 3 view controllers transitioning from one another, something like this:</p> <p>I call the UploadDecisionViewController after destroying the previous View Controller:</p> <pre><code>[self dismissModalViewControllerAnimated:YES]; [self performSelector:@selector(showUDModalView) withObject:nil afterDelay:0.5]; </code></pre> <p>In my showUDModalView method:</p> <pre><code>- (void)showUDModalView { UploadDecisionViewController *udcontroller = [[UploadDecisionViewController alloc] initWithNibName:@"UploadDecisionViewController" bundle:nil]; udcontroller.delegate = self; [self presentModalViewController:udcontroller animated:YES]; [udcontroller release]; } </code></pre> <p>The UploadDecisionViewController shows up no problem. The UploadDecisionViewController has a button, which when clicked I want it to transition to the FileUploadViewController. I setup a UploadDecisionDelegate, threw a method in there to handle the button clicking:</p> <p>Inside UploadDecisionDelegate protocol (UploadDecisionViewController.h):</p> <pre><code>@protocol UploadDecisionDelegate //let UOnliveViewController know that a button was selected - (void)UploadDecisionViewController:(UploadDecisionViewController *)controller madeChoice:(NSString *)whichDirection; @end </code></pre> <p>Then inside my IBAction method when the button is clicked, I have this:</p> <pre><code>- (IBAction)decisionSelected:(id)sender { [delegate UploadDecisionViewController:self madeChoice:@"upload"];//crashing at this line } </code></pre> <p>When I run this, at this line above it is throwing a runtime exception:</p> <pre><code>2010-06-09 12:48:59.561 UOnlive[4735:207] *** -[UIView UploadDecisionViewController:madeChoice:]: unrecognized selector sent to instance 0x3b65420 2010-06-09 12:48:59.562 UOnlive[4735:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UIView UploadDecisionViewController:madeChoice:]: unrecognized selector sent to instance 0x3b65420' 2010-06-09 12:48:59.563 UOnlive[4735:207] Stack: ( 33502299, 2495698185, 33884219, 33453686, 33306306, 20618, 2982917, 3390286, 3399023, 3394235, 3087839, 2996168, 3022945, 40156505, 33287040, 33283144, 40150549, 40150746, 3026863, 11700, 11554 ) </code></pre> <p>Let me throw in the delegate method implemented also:</p> <pre><code>- (void)UploadDecisionViewController:(UploadDecisionViewController *)controller madeChoice:(NSString *)whichDirection { NSLog(@"it got to here 245"); [self dismissModalViewControllerAnimated:YES]; if (yesOrNo) { //open up the FileUploadViewController and proceed to upload [self performSelector:@selector(showFUModalView) withObject:nil afterDelay:0.5]; } } </code></pre> <p>Can someone tell me what the heck is going on? Thanks a bunch for the help...</p>
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