// // LiveContainerFlowLayout_6.swift // BuguLive // //Created by Zhigang Yang on 2020/11/5 // Copyright © 2020 xfg. All rights reserved. // import UIKit class LiveContainerFlowLayout_6: UICollectionViewFlowLayout { override func prepare() { super.prepare() } override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? { guard let attrsArray = super.layoutAttributesForElements(in: rect)else { return [] } let centerX = self.collectionView!. frame.size.width / 2 + self.collectionView!. contentOffset.x var loopIndex = 0 var colWidth = UIScreen.main.bounds.width var firstCellWidth = colWidth/3*2-0.5; var smallCellWidth = firstCellWidth/2 for attrs in attrsArray { var width:CGFloat = 0.0; var x:CGFloat = 0.0; var y:CGFloat = 0.0; if(loopIndex == 0) { width = firstCellWidth } else { width = smallCellWidth switch loopIndex{ case 1: y = 0 x = firstCellWidth case 2: y = firstCellWidth/2 x = firstCellWidth default: y = firstCellWidth x = CGFloat(loopIndex - 3) * smallCellWidth } } attrs.frame = CGRect(x: x,y: y,width: width,height: width) loopIndex += 1 } return attrsArray; } }
