Thanks, will investigate your suggestions. On Thu, Oct 16, 2014 at 10:54 AM, Luke Hiesterman <[email protected]> wrote:
> There are multiple ways to skin this cat. One is to use two collection > views and just modify the content offset of one of them in response to the > scrolling of the other. > > The behavior can also be built into a layout if you want to use a single > scroll view. You don’t need different types of cells - you just need your > layout to make a choice about how it wants each index path to behave. As an > example, I might create a two column layout where all the even numbered > indexes are on the left and all the odd numbered indexes are on the right. > Or maybe it would be something different than that - maybe the first > section would go on the left and the second section would go on the right. > Could be anything. Then if I decided I want the right column to scroll > faster than normal to create the parallax effect, I would return YES from > -shouldInvalidateLayoutForBoundsChange: and then modify the positions of > the layout attributes for all the items in the right hand column based on > some math relative to the content offset. This would accomplish updating > the frames of the right hand column cells every frame that a scroll occurs > and achieve the parallax effect. > > Luke > > > On Oct 15, 2014, at 10:01 PM, Mazzaroth M. <[email protected]> > wrote: > > > > In the running apps view(double-tap Home button) there are two rows each > > which contain two different types of cells. How would one implement this > > using UICollectionView? > > > > I more or less want to do this where the lower row cells are slightly > > narrower than the upper row such that when you swipe to scroll, the items > > in both rows are centred on the screen at the same time but because the > > items in row 1 are slightly narrower, they will scroll slightly faster > than > > the items in row 0 creating a parallax-like effect. An extreme example of > > this would be > > > > https://github.com/allaboutapps/A3ParallaxScrollView > > > > in the tree example, however this is done with a custom UIScrollView > > subclass. > > > > And so, I know that this is possible but not sure if I can do it with > > UICollectionView and may need to use UIScrollView instead(however would > > prefer to figure it out with UICollectionView). > > > > In my attempts for UICollectionView, I was thinking that I'd need to use > > one type of cell for row 0 and another type of cell for row 1, but it's > not > > clear to me how to specify a different layout for each of the rows, which > > appears to be what I need to do. > > > > Any thoughts on this? > > > > maz > > _______________________________________________ > > > > Cocoa-dev mailing list ([email protected]) > > > > 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/luketheh%40apple.com > > > > This email sent to [email protected] > > _______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
