Question

I have the following code in my viewDidLoad method. This is a uiviewcontroller with scrollview and page controller.

I have the following code which creates the views from an array puts a button on the 3rd page:

 for (int i = 0; i < imageNames.count; i++) {
CGRect frame;
frame.origin.x = self.scrollView.frame.size.width * i;
frame.origin.y = 0;
frame.size = self.scrollView.frame.size;

UIView *subview = [[UIView alloc] initWithFrame:frame];

UIImageView *myImageView =[[UIImageView alloc] initWithFrame:CGRectMake(0.0,0.0,self.view.frame.size.width,self.view.frame.size.height)];

myImageView.image=[UIImage imageNamed:[imageNames objectAtIndex:i]];

[subview addSubview: myImageView];


UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
[button addTarget:self 
           action:@selector(doSomething:)
 forControlEvents:UIControlEventTouchDown];
[button setTitle:@"Show View" forState:UIControlStateNormal];

if(i == 1){
[myImageView addSubview:button];
}
[self.scrollView addSubview:subview];

}

I have an ibaction that will dismiss this view as it modal view:
-(IBAction)doSomething:(id)sender{
[self dismissModalViewControllerAnimated:YES];
}

The problem is that this button is unresponsive. It doesn’t even highlight when touch let alone call the doSomething method.

What am I doing wrong?

Answer 1

Note sure if this is the issue but probably.

From the UIImageView docs:

New image view objects are configured to disregard user events by default. If you want to handle events in a custom subclass of UIImageView, you must explicitly change the value of the userInteractionEnabled property to YES after initializing the object.