I'm working on moving the UIView inside the UIScrollView. If the UIScrollView is not pannable then I could manage to trigger the TouchesBegan and TouchesMoved events but when the UIScrollView is zoomed and if I try to touch and move the UIView, scrollview is intercepting and started scrolling. I could not move the UIVIew freely across the UIScrollView.
Can anyone suggest me how to resolve this issue?
Solution:
I have found the solution by setting the UIPanGestureRecognizer ShouldRecognizerSimultaneously to true.
Related
I am using a UIView subclass which can be resized by dragging on the borders and it is added as subview on a UIScrollView. I am also using a UIGestureRecognizer subclass to move the view on the UIScrollView such that the custom view remains visible and the scrollview autoscrolls.
This setup is working as intended but for one problem. Whenever the custom view is resized, the touches on UIScrollView are lost, i.e the scrollview does not recognise the tap or scroll on it unless the custom view is tapped or dragged once again. I have found that after resizing, neither custom UIView nor custom UIGestureRecognizer's touches began, cancelled or ended are called.
Where might the problem be?
I have a UIScrollView configured like this :
canCancelContentTouches:YES
delaysContentTouches:NO
Inside the UIScrollView, I have a few UIButtons (think thumbnails). If I click a button, the touch is detected and if I then start scrolling, the touch is cancelled on the UIButton as expected.
The issue I'm encountering is if I give the UIScrollView a good swing, and I stop the scrolling by simply touching the UIScrollView, once I touch a UIButton it will receive the touchesCancelled after approximately 1 second of holding the button, until I re-scroll the UIScrollView
The problem seems to come from the UIScrollView still thinking that it is getting dragged (which is false because i haven't moved yet on my last touch).
Strangely, if I disable bouncing via [UIScrollView setBounces:false] the issue is not there anymore. But I obviously lose the bounce, which is problematic.
I have tried a bunch of thing like disabling/re-enabling the scrollview, its gesture recognizer. I'm running out of ideas here.
What you can do here when uibutton receives touch began you can set uiscrollview contentsize equal to uiscrollview superview size.
When uibutton receives touch end you can set uiscrollview contentsize back to what it was before.
By setting uiscrollview contentsize equal to uiscrollview superview size it will not allow uiscrollview content to move.
I have a UIScrollView with a group of UIButtons embedded in it. When the UIButtons receive any sort of touch event (while the UIScrollView isn't scrolling) I have them perform an animation that looks like they are being pressed. However, when the UIScrollView is scrolling, the touch event actions of the UIButtons are not triggered. I have attempted to set the zPosition on the UIButtons above the UIScrollView and I have also tried to pass the touch event from the UIScrollView to the UIButton in the same CGRect, but neither of these approaches worked. Let me know what you got...
I have seen many similar questions to this but none help me exactly. I have many vertical UISliders filling a wide UIScrollView. If I drag the thumb on the slider I want the horizontal UIScrollView to be locked and only allow vertical sliding. If I drag the UISlider other than on the thumb I want the horizontal UIScrollView scrolling. It currently works if I touch the thumb before dragging.
I have overridden touchesShouldCancelInContentView in the scroll view but never hit the breakpoint in that method.
I had to override touchesShouldBegin:withEvent:inContentView and also set delaysContentTouches to NO to intercept the touch message.
I have this UIScrollView with UIViews in it. Inside the UIView there is a UIImageView which can be dragged in and out of the UIScrollView. The problem is when I tried to drag the UIImageView out of the UIScrollView within 150ms swiping speed, the UIScrollView becomes active and makes the UIImageView impossible to drag out (Swiping diagonally/horizontally).
What I know is, UIScrollView starts a timer during the first touch event and when the touch ended (within 150ms of touch duration), the scroll view will start to scroll. Is there a possible way to change that 150ms touch duration? Or can I disable the touch event when the user swipes diagonally?
Thanks!