Background: Recently, I was developing a search bar which is a Entry. I find it is much reasonable to unfocus the Entry when I slip somewhere else. So I use PanGestureRecognizer to get the slip movement. But when encounter an ScrollView or any other View inherited from ItemsView, the PanGestureRecognizer didn't work. It seems that the ScrollView override the pan gesture to implement scroll movement.
So, is there any method to active PanGestureRecognizer when I scroll or slip in ScrollView?
So, is there any method to active PanGestureRecognizer when I scroll or slip in ScrollView?
This is a known issue. See: [Android] PanGestureRecognizer doesn't work with ScrollView/ListView and TapGesture
The person who opened the above issue discusses some possible workarounds: https://github.com/xamarin/Xamarin.Forms/issues/1977#issuecomment-467688741
Related
I have a SectionList which scrolls/swipes vertically. Can I bind a swipe gesture on it, so that it results in swiping a completely separate View which is behind it? Furthermore, is there an example someone could lead me to, in which a swipe gesture on a SectionList is bound to the animation of another object or objects? Here is a good example of what I am trying to achieve:
When the view is scrolled vertically in the example above it causes a menu to animate in from the top. That is close to the desired effect I'm seeking. I'd also love to know how to achieve that rotational animation tied to the horizontal swipe. I'm thinking that I will likely need the Animated API for this kind of behavior. Any tutorials or code examples you have would really help.
The question is very simple, how to enable scroll and zoom inside a UIScrollView in tvOS?
I tried the same initializer code from iOS and returned the scrollview for the focusedView var, but nothing happens when i touch the remote.
Also, i tried to add another custom UIPanGestureRecognizer to the scrollview and actually it works, but i don't want to handle the pan with custom code, just use the same pan behavior like iOS.
Let me know, thanks.
You can configure the scroll view's built-in pan gesture to recognize touches on the Siri Remote. It doesn't do that automatically, because normally scroll views on tvOS aren't scrolled directly by touches: they're scrolled automatically as focus moves between views within the scroll view.
If you really want the scroll view to move directly from touches, you'll need to add UITouchTypeIndirect to the allowedTouchTypes of the scroll view's panGestureRecognizer:
scrollView.panGestureRecognizer.allowedTouchTypes = #[ #(UITouchTypeIndirect) ];
You'll also need to make sure that either the scroll view itself is the focused view, or is a parent of the focused view, since all touches from the remote will start at the center of the focused view: you need to make sure the scroll view is getting hit-tested for the events to work.
Zooming won't work, because the Siri Remote can only recognize one touch at a time, so you can't do a pinch gesture on it.
Swift 4 version (from here: https://stackoverflow.com/a/41000183/945247)
scrollView.panGestureRecognizer.allowedTouchTypes = [NSNumber(value:UITouchType.indirect.rawValue)]
Alright here is my issue. I have a Pivot view. Inside that pivot view a scroll viewer containing many stack panels and grids. On some of the grids I have MouseButton Up Events. What is happening is if I flick the scroll it scrolls as expected but when I release my finger most of the time it fires off the event from mousebutton up. Because technically I let up. The problem is these grids completely fill the screen so finding an area without a mousebutton up to scroll is near impossible. What I want to happen is if the user flicked to scroll I would ideally like it to ignore the mousebutton up event. It does this successfully sometimes but pretty rarely and I have noticed I have to flick pretty fast for it to work as expected.
Any ideas on how to prevent this activity. I assume there is as Listboxes work perfect.
i think u should use windows phone toolkit GestureListener to recognize flick event
I ended up setting a bool for when the scrollviewer was scrolling and based on that allowing the mouseup action to run my code. Here is the the site I used to implement the bool based on scrolling status.
http://blogs.msdn.com/b/ptorr/archive/2010/07/23/how-to-detect-when-a-list-is-scrolling-or-not.aspx
I have UiTableView containing some data, and I want to scroll the UiTableViewCells horizontally to the left or right to show some UiButtons that act some action relatif to the content of the cell.
How Can I do this?
I'm thinking in creating custom cell, and putting a scrollView in it, May this did the trick?
There is a tutorial for this at http://idevrecipes.com/2011/04/14/how-does-the-twitter-iphone-app-implement-side-swiping-on-a-table/ with sample code. He is using a UISwipeGestureRecognizer to trigger an animation that pushes the cell off the screen.
You could use a swipe gesture recognizer attached to your cell.
You can add a UIScrollView to the contentView of a UITableViewCell. If you want to scroll the content using buttons, simply overlay the UIScrollView with buttons and make them call the various scrolling methods of UIScrollView.
Nested UIScrollView (UITableView inherits from UIScrollView) are quite clever about detecting touch conflicts and resolving the users intended gesture.
https://github.com/JonasGessner/JGScrollableTableViewCell might be what you're looking for. It implements this using a UIScrollView inside the cell (just like the iOS 7 mail app).
(Yes the answer is a bit late, but it's never too late! :P)
I am wanting to implement history navigation in my app that mimics the slide away animation found in Safari on Lion and in XCode where a top view slides away at the speed of swipe to reveal the view underneath it.
I was looking for pointers on how to do this. I know how to detect the swipe. I assume I could implement the animation via a CALayer animation slide transition on the top view revealing a view underneath it. Has anybody else done this and can offer some further pointers?
It's a new NSEvent method, -trackSwipeEventWithOptions:.... You should call it from within your regular scroll/swipe event handler, whenever you decide the gesture should begin. Unfortunately it doesn't automatically handle the page animations — it just gives you updates with the gesture amount, and you have to do the animations yourself (using layers or views or somesuch). You'll probably want to save images of each page so you can animate them around during a gesture.