If you run into a problem that the Cancel button does not seem to work as expected inside a UIActionSheet, I feel your pain. Here’s what I figured out after a fair amount of trial and error (and frustration) – seems if you attempt to show a UIActionSheet when using a UITabBarController, you’ll run into display and event management problems.
For example, here is how you might traditionally allocate and request a UIActionSheet to be displayed:
// Create the action sheet UIActionSheet *menu = [[UIActionSheet alloc] initWithTitle: @"Shopping List Options" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Clear Shopping List", @"Sort by Recipe", @"Sort by Grocery Aisle", nil]; // Show in the current view [menu showInView:self.view];
All the buttons above, with the exception of Cancel, work as expected. In my code, the Cancel button was essentially ignored, however, to make things interesting, every now and then the expected event (signifying dismissal of the event) was fired. Ugh.
Solution
There is a simple fix – if you change the view in which you want to show the actionsheet to point to the UITabBarController view, as shown here, things seems to by hunky-dory.
// Set the view to be the UITabBarController [menu showInView:self.parentViewController.view];
This assumes of course that the parentViewController for the object in which you are creating the actionsheet is a UITabBarController.