uipangesturerecognizer

I am trying to set up an edge swipe gesture in iOS 8 on iPad but getting and error that seems like a bug. I have the following code: UIScreenEdgePanGestureRecognizer *edgeRecognizer = [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(handleRightEdgeSwipe:)]; edgeRecognizer.edges = UIRectEdgeRight; [self.view addGestureRecognizer:edgeRecognizer]; and then I handle the gesture: -(void)handleRightEdgeSwipe:(UIGestureRecognizer*)sender { //slide in view code here } The problem is that it doesn't detect the right edge swipe every time. And sometimes it detects it

I have a collectionView. I want to detect scroll direction. I have a two different animation style for scroll down and scroll up. So I must learn scroll direction. CGPoint scrollVelocity = [self.collectionView.panGestureRecognizer velocityInView:self.collectionView.superview]; if (scrollVelocity.y > 0.0f) NSLog(@"scroll up"); else if(scrollVelocity.y < 0.0f) NSLog(@"scroll down"); This is just work at finger touched. Not work for me Douglas Ferreira Try this: Add this somewhere in you header: @property (nonatomic) CGFloat lastContentOffset; Then override the scrollViewDidScroll: method:

I have a vertically-scrolling UIScrollView . I want to also handle horizontal pans on it, while allowing the default vertical scroll behavior. I've put a transparent UIView over the scroll view, and added a pan gesture recognizer to it. This way I can get the pans just fine, but then the scroll view doesn't receive any gestures. I've implemented the following UIPanGestureRecognizerDelegate methods, hoping to limit my gesture recognizer to horizontal pans only, but that didn't help: - (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)gestureRecognizer { // Only accept horizontal pans

I have two UIViews on my ViewController. I added panGesture to first view and when i start moving this view the second view will move towards first view. I want to detect an event when these two views collides. Here is my code. @IBAction func dragFirstView(sender: UIPanGestureRecognizer) { let translation = sender.translationInView(self.view) dispatch_async(dispatch_get_main_queue()) { () -> Void in UIView.animateWithDuration(2.5, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: { self.secondView.frame = CGRectMake(sender.view!.center.x + translation.x, sender.view!.center

I d'like to combine a UILongPressGestureRecognizer with a UIPanGestureRecognizer. The UIPanGestureRecognizer should start with a long press. Is there a simple way to do this? or do I really have to write my own gesture recognizer? I wan't something like on the home screen. You press on an icon and after some time the icons start wobbling. Afterwards without releasing my finger from the screen I can start dragging the icon under my finger around. actually, you don't have to combine gesture recognizers - you can do this solely with UILongPressGestureRecognizer... You enter StateBegan once your

I want to implement an interactive transition between two view controllers. I would like it to be a modal or present transition. I want the app to start out on the first view controller and allow the user to swipe down to bring in the second view controller The second view controller should come in and cover the current (first view controller) rather than move it out of the way I understand that I would need to use the following. transitioningDelegate animationController(forPresented:presenting:Source:) interactionControllerForPresentation(Using:) UIPercentDrivenInteractiveTransition I am