iPhone: adding button to scrollview makes button inaccessible to interaction

Question

For some reason, the button initialized in the addBook method of my viewController won\'t respond to touches. The selector I\'ve assigned to it never triggers, nor does the UICo

Answer 1

THe UIScrollView might be catching all the touch events.

Maybe try a combination of the following:

_scrollView.delaysContentTouches = NO;
_scrollView.canCancelContentTouches = NO;

and

bookView.userInteractionEnabled = YES;

Answer 2

try to remove the [bookView autorelease]; and do it like this:

// Add the new view/button combo to the scrollview.
// THIS WORKS VISUALLY, BUT THE BUTTON IS UNRESPONSIVE :(
[_scrollView addSubview:bookView];
[bookView release];

_scrollView.canCancelContentTouches = YES; should do the trick

delaysContentTouches - is a Boolean value that determines whether the scroll view delays the handling of touch-down gestures. If the value of this property is YES, the scroll view delays handling the touch-down gesture until it can determine if scrolling is the intent. If the value is NO , the scroll view immediately calls touchesShouldBegin:withEvent:inContentView:. The default value is YES.

canCancelContentTouches - is a Boolean value that controls whether touches in the content view always lead to tracking. If the value of this property is YES and a view in the content has begun tracking a finger touching it, and if the user drags the finger enough to initiate a scroll, the view receives a touchesCancelled:withEvent: message and the scroll view handles the touch as a scroll. If the value of this property is NO, the scroll view does not scroll regardless of finger movement once the content view starts tracking.