uipangesturerecognizer

I'm trying to replicate the swipe to delete function like in the mail tableview. Only this time I need to build it on a collectionview but I'm having a bit of a hard time. It's a horizontal scrolling list with a swipe up to delete. I already got the swipe up working but having a hard time figuring out how I need to setup the swipe to delete / tap to delete or ignore functionality. It looks like the following: So I'm using the following collectionview: func buildCollectionView() { let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout() layout.scrollDirection = .horizontal layout

I have a custom slider-type object, that I wish to make more usable. Currently I use UIPanGestureRecognizer and translationInView to make it work. It works pretty well but I'd like some sort of velocity in there to make it feel a bit more useful. I've tried a few things but cant quite figure out how to properly implement velocity changedLevel equation. - (void)panDetected:(UIPanGestureRecognizer *)gesture { CGPoint swipeLocation = [gesture locationInView:self.tableView]; NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:swipeLocation]; LevelCounterTableCell *swipedCell =

I have a UIImageView which is moveable via a pan gesture. UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)]; [self.photoMask addGestureRecognizer:pan]; I would like to restrict the area this can be moved on screen. Rather than the user be able to drag the view right to the side of the screen, I want to restrict it by a margin of some sort. How can I do this? Also, how is this then handled when rotated? EDIT --- #pragma mark - Gesture Recognizer -(void)handlePan:(UIPanGestureRecognizer *)gesture { NSLog(@"Pan Gesture"); gesture.view

I want to allow user to drag UIView inside a limited area of its super view. Trying the following simple code: func handlePanForImage(recognizer: UIPanGestureRecognizer) { if let myView = recognizer.view { switch (recognizer.state) { case .Changed: let translation = recognizer.translationInView(self) if insideDraggableArea(myView.center) { myView.center = CGPoint(x:recognizer.view!.center.x + translation.x, y:recognizer.view!.center.y + translation.y) recognizer.setTranslation(CGPointZero, inView: self) } default: break } } } I see that indeed the view is not dragged outside the limited area,

I am new to ios, so I apologize in advance if I am missing something obvious. I am creating a puzzle where I would like the individual puzzle pieces to increase in size on touch and decrease on letting go. Currently I have: -(IBAction)handlePan:(UIPanGestureRecognizer *)recognizer{ if(recognizer.state == UIGestureRecognizerStateBegan) else if(recognizer.state == UIGestureRecognizerStateEnded) } The puzzle piece increases size when the pan begins (which is also when the statebegan) and decreases in size when the pan ends (as expected). I would like the size to increase once the user has touched

When using UIPanGestureRecognizer and detecting UIGestureRecognizerStateEnded , then the velocity of the gesture is not the true velocity. Instead, it's the old velocity of the previous invocation of my action method. How can I access the true velocity at the end of the gesture? I create my UIPanGestureRecognizer like this: UIPanGestureRecognizer* panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGestureRecognized:)]; [panGestureRecognizer setMaximumNumberOfTouches:2]; [panGestureRecognizer setMinimumNumberOfTouches:1]; [panGestureRecognizer