Programatically scroll to next item

[hugocroch]

Hello,
I am trying to find a way to scroll to the next item programatically. Is there something that I can use to achieve this?

Thanks

[a-voronov]

@hugocroch just set dummyCount to 1, so it doesn't scroll through several screens (with animation) once you try to select an item.
And call selectItem(at:animated:scrollPosition:) with proper indexPath.
Usually you store your data and selected index in some kind of data object or model in case of mvc.

But to fulfill example from this repo for Pattern1ViewController, next code will do the trick:

fileprivate func nextItemIndexPath() -> IndexPath {
    let nextIndex = pageControl.currentPage + 1
    if nextIndex < itemsCount {
        return IndexPath(item: nextIndex, section: 0)
    }
    return IndexPath(item: 0, section: 0)
}

fileprivate func prevItemIndexPath() -> IndexPath {
    let prevIndex = pageControl.currentPage - 1
    if prevIndex >= 0 {
        return IndexPath(item: prevIndex, section: 0)
    }
    return IndexPath(item: itemsCount - 1, section: 0)
}

and then just call this method whenever you need to move to next item

collectionView.selectItem(at: nextItemIndexPath(), animated: true, scrollPosition: .centeredHorizontally)

[krishnakirana]

I want to do auto scrollable, Above code works but I wanted in reverse order(Right to left scroll)