I have table view and scroll view. Table view is on scroll view. Now I want to drag scroll view and if scroll view dragged to some point, scroll view should stop drag and table view start to scroll within single drag (touch) event. I tried it with UIPanGestureRecognizer and also tried with implementation of - (void)scrollViewDidScroll:(UIScrollView *)scrollView.
But not getting success.
This is implementation [Please go through image. table view scrolling and depend on that above view moved to top. now i want table view scroll to stop and move table view and topView to top and when topView invisible tableview should scroll withn that single drag event]
Up Scrolling Table View:
Down Scrolling Table View:
I have a vertically-scrolling scroll view that has a single subview. This subview has a couple of collection views. I want them to scroll horizontally. It doesn't work because they are inside the scroll view.
The problem is that the pan/scrolling gesture is working just for the scroll view and it doesn't propagate to the collection views. I just see the scroll view scrolling.
There is the same problem with tapping on a collection cell. This event just doesn't happen.
I already tried adding the gestures manually but I am not able to scroll the collection views.
How can I propagate all the gestures ?
Thank you !
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I have a couple horizontal scrolling collection views and one vertical scrolling collection view that are added to the same view. These collection views are overlapping like this.
If you're touching the horizontal scrolling collection view I would still like to be able to scroll the vertical scrolling collection view and vice versa. Is that possible to do?
iOS 8, Swift.
I'm trying to have a vertically scrolling view over a horizontally scrolling view. They're both UIScrollViews. The vertical scroll view is there to allow swiping up a view from the bottom. There is a spacer view on top using auto layout that is 1 pixel wide but the screens height.
This works fine until the underlying view is itself a scrollview to support horizontal scrolling.
I somehow need to pass the left/right pan gesture to the subview which is a UIScrollView.
Currently, the top level vertical scroll view is capturing all the gestures and not letting the underlying horizontal scroll view see the events.
I've tried various combinations of hitTest, gestureRecognizer delegate methods, scrollview subclassing but having come up with a nice clean solution.
I can use hitTest to pass events to the underlying horizontal scroll view when tapping the empty space at the top of the vertical scroll view, but then the vertical scroll view never processes a pan or swipe up to reveal the content that should appear on a swipe up.
Ideally, I'd like the top vertical scroll view to only handle pan up/down, and pass left/right pan to subview when the vertical scroll view is at the top.
Here's a brief method that may help you out:
Obj-C:
create scroll view that is invisible, and then pass the offset of the invisible scroll view or the touch events to the scroll views below depending on the offset of the touch events on the top invisible scroll view that covers the two underlying scroll views:
-(void)scrollViewDidScroll:(UIScrollView *)scrollView {
[_verticalScrollView setContentOffset:CGPointMake(0, _insivibleScrollView.contentOffset.y)];
[_horizontalScrollView setContentOffset:CGPointMake(_insivibleScrollView.contentOffset.x, 0)];
}
You create an invisible scroll view, and by invisible, I mean you may have to keep the alpha value at like 0.01. You don't allow user interaction for the horizontal and vertical scroll views, but instead use the method above so that when the user touches the invisible scroll view you translate those touches to the scroll views below that are locked down to respond to only the offset of the invisible scroll view. As you've stated in your comment, there's probably more to this answer for your individual needs, but this is the basic "foundation" that will give you the effect that you probably want.
Swift:
Same method as above, but here's the function that you'll need:
func scrollViewDidScroll(scrollView: UIScrollView!) {
verticalScrollView.contentOffset = CGPointMake(0, invisibleScrollView.contentOffset.y)
horizontalScrollView.contentOffset = CGPointMake(invisibleScrollView.contentOffset.x, 0)
}
I have a view that contains a scroll view and that scroll view has another 2 views in it: on top a standard view, and under that another view. This last view has a scroll view inside it. (a matroshka doll has nothing on this app) .
The problem is there is a button that causes the bottom view to resize and increase it's height, but the outer scroll view doesn't increase content size. So the bottom part of the bottom view (now resized to be bigger) is not visible.
Any suggestions on how to fix this mess ?