Question

My app delegate looks like

   [self.splashScreen viewWillDisappear:NO];
    self.window.rootViewController = tabBarController;

    educationButton=[[UIEducationButtonController alloc] init];
    [window addSubview: educationButton.view];

    [self.window makeKeyAndVisible];

And, my UIEducationButtonController looks like:

@implementation UIEducationButtonController

- (void)viewDidLoad {
    [super viewDidLoad];

    UIButton *educationButton = [[UIButton alloc] init];    
}

@end

And that causes my app to freeze in iPhone 4.3 simulator. Any ideas why?

(This might seem like a very specific, nonsensical question but I’m trying to figure out what’s wrong with my implementation theory.)

Answer 1

UIButton doesn’t have an init method defined – use:

UIButton *educationButton = [UIButton buttonWithType:...] 

class method to instantiate the button instead.