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POiOS UIActionSheet presented from LongPress gesture on a button erroneously requires double clicking buttons to dismiss
 

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    <p>I have a tabbar application, in one of the tabs I have a MKMapView. In this view, my viewDidLoad I am initializing a long press gesture recognizer for a UIButton. When this button is pressed and help it presents a UIActionSheet with 5 buttons + the cancel button. Each button represents a zoom level: "World", "Country", "State", "City", "Current Location". Selecting a button in the UIActionSheet zooms the underlying MKMapView to that level. </p> <p>The problem I am having is that all of the buttons (including the cancel button) require double-tapping to dismiss the UIActionSheet. This is not the intended behavior -- it should dismiss after pressing the button once like every other UIActionSheet. After the first press I can see the map zooming to the appropriate level behind the UIActionSheet so I know the touch is registering on the correct button, but the button does not highlight blue upon the first press and the UIActionSheet does not dismiss. Not until I press the button for a second time does it highlight blue and then dismiss. </p> <p>If I remove the longpress gesture recognizer and present the UIActionSheet on a 'touch up inside' then everything works as it is supposed to. So I know the gesture is somehow interfering, any ideas on a fix or workaround? Or is this a bug that should be reported to Apple?</p> <pre><code>- (void) viewDidLoad { // intitialize longpress gesture UILongPressGestureRecognizer *longPressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(zoomOptions:)]; longPressRecognizer.minimumPressDuration = 0.5; longPressRecognizer.numberOfTouchesRequired = 1; [self.currentLocationButton addGestureRecognizer:longPressRecognizer]; } - (IBAction) zoomOptions:(UIGestureRecognizer *)sender { NSString *title = @"Zoom to:"; UIActionSheet *zoomOptionsSheet = [[UIActionSheet alloc] initWithTitle:title delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"World", @"Country", @"State", @"City", @"Current Location", nil]; [zoomOptionsSheet showFromTabBar:appDelegate.tabbarController.tabBar]; } </code></pre>
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    1. COIt's not a bug. See [this question](http://stackoverflow.com/questions/7688329/uilongpressgesturerecognizer-on-uitableviewcell-double-call/7688584#7688584).
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