CODEWITHSUNDEEP
iosswiftuicollectionviewnsindexpath
Хосе Игнасио
Хосе Игнасио

Reputation: 13

Swift iOS. How can I get indexPath's of cells in UICollectionView

I need to update collectionView when without reloadData() (To animatedly insert and delete cells) So I want to get array of indexPaths of cells.

Upvotes: 0

Views: 3640

Answers (1)

Stefan Salatic
Stefan Salatic

Reputation: 4523

To get the array of index paths for currently visible UICollectionView cells just call

collectionView.indexPathsForVisibleItems()

To get all cells you can create your own array using the data source methods.

var indexPaths: [NSIndexPath] = []
for s in 0..<collectionView.numberOfSections() {
    for i in 0..<collectionView.numberOfItemsInSection(s) {
        indexPaths.append(NSIndexPath(forItem: i, inSection: s))
    }
}

Here's the Swift5 syntax!

    var allIPs: [IndexPath] = []
    for s in 0..<coll.numberOfSections {
        for i in 0..<coll.numberOfItems(inSection: s) {
            allIPs.append(IndexPath(item: i, section: s))
        }
    }

Upvotes: 9

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