uiswipegesturerecognizer

how detect swipe gesture direction?

Here is an example from one of my projects: // … UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didSwipe:)]; swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft; [self.view addGestureRecognizer:swipeLeft]; UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didSwipe:)]; swipeRight.direction = UISwipeGestureRecognizerDirectionRight; [self.view addGestureRecognizer:swipeRight]; UISwipeGestureRecognizer *swipeUp = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didSwipe:)]; swipeUp.direction = UISwipeGestureRecognizerDirectionUp; [self.view addGestureRecognizer:swipeUp]; UISwipeGestureRecognizer *swipeDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(didSwipe:)]; swipeDown.direction … Read more

How to recognize swipe in all 4 directions?

You set the direction like this UISwipeGestureRecognizer *Swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(SwipeRecognizer:)]; Swipe.direction = (UISwipeGestureRecognizerDirectionLeft | UISwipeGestureRecognizerDirectionRight | UISwipeGestureRecognizerDirectionDown | UISwipeGestureRecognizerDirectionUp); That’s what the direction will be when you get the callback, so it is normal that all your tests fails. If you had – (void) SwipeRecognizer:(UISwipeGestureRecognizer *)sender { if ( sender.direction | UISwipeGestureRecognizerDirectionLeft … Read more

Setting direction for UISwipeGestureRecognizer

Seems like there is a bug. You can specify the allowed direction(s) as you did. But when you try to access the actual direction that triggered the swipe in the action selector method you still get the bit mask you originally set (for the allowed directions). This means that checks for the actual direction will … Read more

How to recognize swipe in all 4 directions

You need to have one UISwipeGestureRecognizer for each direction. It’s a little weird because the UISwipeGestureRecognizer.direction property is an options-style bit mask, but each recognizer can only handle one direction. You can send them all to the same handler if you want, and sort it out there, or send them to different handlers. Here’s one … Read more