UIPageViewController disable scrolling

Question

I am using a UIPageViewController with transitionStyle UIPageViewControllerTransitionStyleScroll and navigationOrientation UIPageViewControllerNavigationOrientationVertical

I also have a UIPanGestureRecognizer on the view and I want to disable page scrolling when the pan gesture is active.

I am trying to set the following when the gesture begins:

pageViewController.view.userInteractionEnabled = NO;

This seems to have no effect, or it appears to work sporadically.

The only other way I have found to do it (which works) is to set the UIPageViewController dataSource to nil while the pan gesture is running, however this causes a huge delay when resetting the dataSource.

score 22 · Answer 1 · edited Jul 30 '15 at 17:26

22

UIPageViewController uses some UIScrollView object to handle scrolling (at least for transitionStyle UIPageViewControllerTransitionStyleScroll). You can iterate by controller's subviews pageViewController.view.subviews to get it. Now, you can easly enable/disable scrolling:

- (void)setScrollEnabled:(BOOL)enabled forPageViewController:(UIPageViewController*)pageViewController
{
    for (UIView *view in pageViewController.view.subviews) {
        if ([view isKindOfClass:UIScrollView.class]) {
            UIScrollView *scrollView = (UIScrollView *)view;
            [scrollView setScrollEnabled:enabled];
            return;
        }
    }
}

edited Jul 30 '15 at 17:26

sig

6,024
2
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answered Aug 23 '13 at 08:25

squikend

269
2
7

I've been searching for a while and this is the best answer i've found for disabling swiping on UIPageViewController but keeping the tap movement. – William Robinson May 07 '14 at 14:29
In swift, if you like condensed stuff a bit hard to read: `pageViewController.view.subviews.flatMap({ $0 as? UIScrollView}).forEach({$0.isScrollEnabled = enabled})` – HHK Oct 13 '16 at 01:56

score 3 · Answer 2 · answered Jan 10 '15 at 18:29

For those who are using swift instead of objective-c, here is Squikend's solution transposed.

func findScrollView(#enabled : Bool) {
    for view in self.view.subviews {
      if view is UIScrollView {
        let scrollView = view as UIScrollView
        scrollView.scrollEnabled = enabled;
      } else {
        println("UIScrollView does not exist on this View")
      }

    }
  }

score 0 · Answer 3 · answered Feb 20 '22 at 13:09

0

Everyone is complicating this very very much.

This is the whole function you need to disable or enable the scroll.

    func enableScroll(_ enable: Bool) {
        dataSource = enable ? self : nil
    }

answered Feb 20 '22 at 13:09

Programmer

134
1
12

score -1 · Answer 4 · answered Oct 16 '18 at 20:50

Swift 4.2 Version of the answer

func findScrollView(enabled: Bool) {
    for view in self.view.subviews {
        if view is UIScrollView {
            let scrollView = view as! UIScrollView
            scrollView.isScrollEnabled = enabled
        } else {
            print("UIScrollView does not exist on this View")
        }

    }
}

then yourpagecontorller.findScrollView(enabled: false)

kelin · Answer 5 · 2021-10-22T07:15:46.373

-2

You may also disable gesture recognizers.

for (UIGestureRecognizer *recognizer in pageViewController.gestureRecognizers)
{
    recognizer.enabled = NO;
}

Unlike the popular answer, which relies on existing of the inner UIScrollView, this one uses public gestureRecognizers array. The underlying scroll view may not exist if you use book-style paging.

edited Oct 22 '21 at 07:15

answered Nov 17 '15 at 10:50

kelin

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UIPageViewController disable scrolling

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