I implemented a parallax in my code but the buttons move horizontally as well as vertically. Is there any way I can cancel the horizontal movement out without losing my vertical movement? Any help will be appreciated!
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My application consists of multiple pages by scrolling horizontally - done by having 2 swipe gesture recognizers over the whole ViewController. On every page I have a ViewTable with items that scroll vertically.
Unless I do a perfect horizontal swipe, the TableView takes over the recognition and does a slight vertical scroll on the table rows.
How do it change the scrolling recognition angle for TableView? Because the table's vertical scrolling is responding from touches around 10º ~ 170º. Whereas I'd like them to be 45º for each direction. How do I narrow that angle? So that my main left/right pages respond easier without having to try to do a perfect horizontal swipe.
I have not really made such a gesture but this is how I think this can be achieved. This is similar to ViewPager on Android. You can use a normal Gesture Recognizer over UITableView, calculate how much x and y displacements are there and then decide whether you want to handle the horizontal scroll yourself by shifting the page or pass the control down to UITableView.
But if you keep your Gesture Recognizer below UITableView, you will never get the control to act upon the gesture unless UITableView passes down to you.
I have a scroll view .I want to scroll it in both direction horizontal and vertical.But when i am scrolling the subview is bouncing as both scrolling are enabled. how to mange this issue like when i am scrolling the view vertically,horizontal scroll should be disabled.
Set the directionalLockEnabled property to YES.
However,
If the drag direction is diagonal, then scrolling will not be locked
and the user can drag in any direction until the drag completes.
Set scrollview.directionalLockEnabled to YES
Note: If this property is NO, scrolling is permitted in both
horizontal and vertical directions. If this property is YES and the
user begins dragging in one general direction (horizontally or
vertically), the scroll view disables scrolling in the other
direction. If the drag direction is diagonal, then scrolling will not
be locked and the user can drag in any direction until the drag
completes. The default value is NO
I have a UIScrollView stretching over the entire screen, which the user is able to scroll vertically only. Right 'above' it is a UIView with a few buttons, which covers the bottom 120 px only. The user may tap the buttons to invoke their selectors. But I wish to be able to pass the panning movement to the scrollView, so that the user may scroll the scrollView if they pan with a velocity greater than a certain threshold, if the panning begins over the UIView.
How would I go about it?
Thanks
You can do 2 things.
Add a UITouchesMoved function to your uiView, calculate finger movement and move your scrollView accordingly by scrolling it to a CGPoint.
You can use UIPanGestureRecognizer.
Is there anyway to produce a vertical scroll view that will have the illusion of an endless continuous scroll?
Apple has released sample code for something called StreetScroller that does this for a horizontal scrollview but can this be reproduced for a vertical one?
Try This it is a great control the allows horizontal and vertical infinite scrolling.
I have a strange issue: When I scroll vertically it triggers swipe right/left events.
I've checked it on iOS...
The swipe events are bound to the data-role='page'.
you can try configuring the horizontalDistanceThreshold to a higher value to allow more horizontal movement when scrolling.