fix(ios): resolve scrollEnabled prop initialization timing issue

[okwasniewski]

Summary

Store scrollEnabled state in an ivar and apply it when the scroll view becomes available, rather than attempting to set it before initialization. This ensures the prop works reliably regardless of when props are updated relative to UIPageViewController setup.

Fixes #1029

Test Plan

Check if scroll enabled works correctly.

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Note

Store scrollEnabled in an ivar and apply it once the inner UIScrollView exists, updating consistently on prop/imperative changes and lifecycle resets.

• iOS PagerView (RNCPagerViewComponentView):
  • Store scrollEnabled in _scrollEnabled with default YES; reset on recycle.
  • Add applyScrollEnabled and call it after UIPageViewController setup, on prop changes, and in imperative setter.
  • Update updateProps to compare old/new scrollEnabled, set _scrollEnabled, then apply.
  • Replace direct scrollView.scrollEnabled writes with deferred application via _scrollEnabled.

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Bug: Imperative method bypasses scrollEnabled state synchronization

The setScrollEnabledImperatively method directly modifies scrollView.scrollEnabled without updating the _scrollEnabled ivar. This creates state inconsistency where subsequent calls to applyScrollEnabled (during re-initialization or prop updates) will overwrite the imperatively set value with the stale ivar value, causing the scroll state to revert unexpectedly.

ios/RNCPagerViewComponentView.mm#L400-L403

react-native-pager-view/ios/RNCPagerViewComponentView.mm

Lines 400 to 403 in 0a4bb73

	- (void)setScrollEnabledImperatively:(BOOL)scrollEnabled {
	[scrollView setScrollEnabled:scrollEnabled];
	}

 

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[cursor]

Bug: Imperative scroll method doesn't update state variable

The setScrollEnabledImperatively method directly modifies scrollView.scrollEnabled without updating the _scrollEnabled ivar. This creates inconsistency where calling this method before scrollView initialization has no effect, and the imperative setting won't be applied when applyScrollEnabled is later called during initialization. The method should update _scrollEnabled and call applyScrollEnabled to maintain consistency with the new state management pattern.

ios/RNCPagerViewComponentView.mm#L401-L404

react-native-pager-view/ios/RNCPagerViewComponentView.mm

Lines 401 to 404 in 5e3bb6b

	- (void)setScrollEnabledImperatively:(BOOL)scrollEnabled {
	[scrollView setScrollEnabled:scrollEnabled];
	}

 

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