当视图显示为幻灯片时，自动滚动UICollectionView元素。

Im working on a project in swift 3 and currently I can go through the UICollectionView items by dragging one after the other. My requirement is to display them (the items) as a slide-show without dragging them (need to disable this)as the screen appears. My code as of now as bellow. Since I'm new to swift help would be much appreciated.Im working on a project in swift 3 and currentl