iOS Gesture not detected due to accessibility settings

An app I am developing requires a three-point swipe gesture.

I have successfully implemented this using a UIGestureRecognizer and it works fine for the most part.

However, if you sw开发者_StackOverflowitch the device Zoom accessibility setting on (Settings > General > Accessibility > Zoom) this stops the gesture from being recognized.

The Zoom function uses various three-point gestures to operate, so I can understand this superseding my app gesture.

However, does anyone know how I can determine if the Zoom setting is turned on (or the zoom accessibility gesture performed) so I can at least advise the user that the gesture will not be recognized?

Thanks!

If you're targeting iOS 5, take a look at UIAccessibilityRegisterGestureConflictWithZoom(). While it doesn't tell you if Zoom is enabled, it will let your users know when there's a conflict.

I would use an if statement to check if the user has accessability enabled then if they do, make your app do a four finger swipe.

if (isAccessabilityElement)

? have you tried that?

There is an option to find out is zoom set or not set in UIScrollView delegate methods but u can try using UIPinchGestureREcognizer in addition to swipe gesture recognizer. For Further information you can check out in apple's developer documentation.