Hello Quincey, First, I should have originally made clear this is iOS, apologies. Also, to clarify, I am talking about the drag-scroll gesture, which would be the Pan gesture.
The scroller-within-a-scroller is definitely more complex but I've usually made them work in previous view controllers I've developed. Like you, I don't really have a great idea of what is happening under the hood in these various UIScrollviews. Or even a good idea how to debug what seems like lower-level stuff. Thinking about it more, I might look into priorities of the gesture recognizers, since this sounds like it could be related. Otherwise, I'm still looking for other ways to track this down. Thanks again. Doug Hill > On Jun 19, 2017, at 11:29 PM, Quincey Morris > <quinceymor...@rivergatesoftware.com> wrote: > > On Jun 19, 2017, at 16:22 , Doug Hill <cocoa...@breaqz.com > <mailto:cocoa...@breaqz.com>> wrote: >> >> The embedded collection view will only scroll if I drag on the area of the >> collection view that is originally visible. > > Can you clarify this a bit? Are you talking about the autoscrolling that > happens when you drag-select, or scrolling that happens when you use a scroll > gesture on a trackpad? If you click on one of the > previously-hidden-but-now-exposed rows, then try to drag it as a separate > step, does the scroll happen? > > I’d assume the problem arises because you have a scroll view within a scroll > view, and each scroll has installed a pan gesture recognizer. The recognizer > may be capturing the visibleRect of the scrolled view, and when you scroll > the outer view, there may not be anything to tell the inner view that its > visibleRect has changed. > > This is all pretty moot, though. Even if that’s the explanation, I can’t > think of anything you can do about it. > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
