UIButton inside UIImageView does not respond to taps

ios objective-c cocoa-touch uiimageview uibutton
Ravi picture Ravi · May 28, 2011 · Viewed 17.4k times · Source

I have a scroll view, which has an image view with an image as a subview, and the image view has a UIButton as one of its subviews. The problem is, I am not able to click on the button. I can SEE the button, but I cannot tap on it.

Can someone tell me what is it that I am messing up? Any help is greatly appreciated! Thanks!

Below is the code:

scrollView = [[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];    
imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"img.jpg"]];
scrollView.delegate = self;
self.view = scrollView;

// add invisible buttons
[self addInvisibleButtons];
[scrollView addSubview:imageView];

addInvisibleButtons has the following code:

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self action:@selector(buttonHandler) forControlEvents:UIControlEventAllEvents];
[button setTitle:@"point" forState:UIControlStateNormal];
button.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
[self.imageView addSubview:button];

Answer

Deepak Danduprolu picture Deepak Danduprolu · May 28, 2011

UIImageView has userInteractionEnabled set to NO/ false by default.

You are adding the button as a subview to the image view. You should set it to YES / true.

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