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POUIButton in a UITabBarController crashing when clicked!
 

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  1. POUIButton in a UITabBarController crashing when clicked!
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    <p>I tried to include a custom button programmatically inside a UIView which is a subview of UITabBarController. The button is displays fine but when I click it, it crashes without an error message. Its strange that sometimes it does inconsistently:</p> <pre> Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString playButton]: unrecognized selector sent to instance 0x632cd10' </pre> <p>I even tried removing any code in my play button method, i tried changing the name playButton to playAction, I also tried add the button directly to "self" not to aboutView but the result is still the same.</p> <p>My guess is it got something to do with the tabBar having a UIView as a subview with a button on it. I don't know.</p> <p>Here's a code snippet of how i built the tabBar in my appDelegate method</p> <pre><code> // About Tab aboutViewC = [[[AboutViewController alloc] init] autorelease]; aboutNavC = [[[UIViewController alloc] init] autorelease]; aboutNavC.title = @"About"; aboutNavC.view = aboutViewC.view; // Lessons Tab lessonsViewC = [[[LevelViewController alloc] init] autorelease]; lessonsViewC.title = @"Levels"; lessonsNavC = [[[UINavigationController alloc] initWithRootViewController:lessonsViewC] autorelease]; lessonsNavC.title = @"Lessons"; lessonsNavC.viewControllers = [NSArray arrayWithObjects:lessonsViewC, nil]; tabBarController = [[UITabBarController alloc] init]; tabBarController.viewControllers = [NSArray arrayWithObjects:aboutNavC, lessonsNavC, nil]; </code></pre> <p>and heres the code for implementing the AboutViewController class</p> <p>AboutViewController.h</p> <pre><code> #import @interface AboutViewController : UIViewController { UIButton *playSoundButton; UIView *aboutView; } - (void)playButton; @end </code></pre> <p>AboutViewController.m</p> <pre><code> #import "AboutViewController.h" @implementation AboutViewController - (void)dealloc { [playSoundButton release]; [aboutView release]; [super dealloc]; } - (void)viewDidLoad { aboutView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; [playSoundButton = [UIButton buttonWithType:UIButtonTypeCustom] retain]; image = [UIImage imageNamed:@"bt_play.png"]; [playSoundButton setImage:image forState:UIControlStateNormal]; [playSoundButton addTarget:self action:@selector(playButton) forControlEvents:UIControlEventTouchUpInside]; playSoundButton.frame = CGRectMake(0, 350, 40, 40); [aboutView addSubview:playSoundButton]; stopSoundButton.hidden = YES; playSoundButton.hidden = NO; [self.view addSubview:aboutView]; [super viewDidLoad]; } - (void)playButton { NSLog(@"playAction method"); } @end </code></pre> <p>Thanks in advance!</p>
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