Problems appearing cells before the animation starts.

[alexanderkhitev]

Hello! Thanks for the wonderful framework! I ran into the problem that UICollectionView cells appear before the animation starts, at this point the cells are loading photos and the user names are already visible. Please tell me how can this be avoided?

                self?.collectionView.refreshControl?.endRefreshing()
                let offset = UIScreen.main.bounds.width
                let fromAnimation = AnimationType.from(direction: .left, offset: offset)
                let animationInterval = 0.1
                self?.collectionView.animateViews(animations: [fromAnimation], initialAlpha: 1, finalAlpha: 1, delay: 0, duration: 0.4, animationInterval: animationInterval, completion: {
                    
                })
                self?.collectionView.reloadData()

https://monosnap.com/file/MgYyNwEbBqeMdyI4jedYBPMf0uIKOQ

[marcosgriselli]

If you're animating from outside the view I recommend you hide the views then reload the data and then apply the animation.

self?.collectionView.refreshControl?.endRefreshing()
let offset = UIScreen.main.bounds.width
self?.collectionView.prepareViews()
self?.collectionView.reloadData()
let fromAnimation = AnimationType.from(direction: .left, offset: offset)
let animationInterval = 0.1
self?.collectionView.animateViews(animations: [fromAnimation], initialAlpha: 1, finalAlpha: 1, delay: 0, duration: 0.4, animationInterval: animationInterval, completion: {
                    
})

[alexanderkhitev]

Hello @marcosgriselli ! Sorry for late response. I tried to do so it did not help me. This happens only during the first loading screen, in the future it works.

Also I did so, but it did not help me

self?.collectionView.prepareViews(initialAlpha: 0)
self?.collectionView.reloadData()

[marcosgriselli]

@alexanderkhitev prepareViews will not work if there are no cells to prepare 😕. You'll have to do some workaround. The shortest path to get it could be

self?.collectionView.alpha = 0
self?.collectionView.reloadData()
self?.collectionView.prepareViews(initialAlpha: 0)
self?.collectionView.alpha = 1

Or setting te cell alpha to 0 on cellForItem() only for the first load.

[alexanderkhitev]

@marcosgriselli Yes I tried doing the same method only with isHidden and it also works, thanks!