CODEWITHSUNDEEP
iosuicollectionviewuicollectionviewlayout
Hex Bob-omb
Hex Bob-omb

Reputation: 314

How can I delete an item from a collection view without animation?

I have an array of item IDs that backs a collection view. As the user scrolls through the collection view, each cell gets the object for that ID, then the image associated with that object. If an object happens not to have an image associated with it, I would like to delete that item ID from the array, and then update the collection view onscreen. The problem is that there are a lot of objects without images (lots of updating) and I need to update the collection view immediately (no time for animation).

Using reloadData causes the collection view to flicker as each object is removed. Using deleteItemsAtIndexPaths requires animations which are undesirable. Any way to remove an item from a collection view without animation that's not reloadData?

Upvotes: 4

Views: 2651

Answers (2)

Skoua
Skoua

Reputation: 3603

Here's a Swift 5 version with a slightly different way to do it:

UIView.performWithoutAnimation {
    self.collectionView.performBatchUpdates({
        self.collectionView.insertItems(at: indexPaths)
    }, completion: nil)
}

Upvotes: 5

KKRocks
KKRocks

Reputation: 8322

you need to reload particular row with disable animation option .

[UIView setAnimationsEnabled:NO];

[collectionView performBatchUpdates:^{
    [collectionView reloadItemsAtIndexPaths:indexPaths];
} completion:^(BOOL finished) {
    [UIView setAnimationsEnabled:YES];
}];

Upvotes: 2

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