如何使用swift 4显示像facebook上传图片这样的collectionView?

问题描述

您好，我想完全按照上图显示 collectionView.我知道它负责 UICollectionViewFlowLayout，但无法做到.非常感谢您的帮助.这是我的代码

Hello i want to show the collectionView exactly as the above image. I know that it responsible for UICollectionViewFlowLayout, but unable to do it. Help is much appreciated. Here is my code

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
     let yourWidth = (collectionView.bounds.width - 4) / 3.0
     let yourHeight = yourWidth
     return CGSize(width: yourWidth, height: yourHeight)
}

推荐答案

你的答案在你的问题中，兄弟缺少一些条件

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {

        switch indexPath.item {
        case 0,1:
            return CGSize(width: (UIScreen.main.bounds.width - 16) / 2, height: (UIScreen.main.bounds.width - 16) / 2)
        default:
            return CGSize(width: (UIScreen.main.bounds.width - 32) / 3, height:  (UIScreen.main.bounds.width) / 3)
        }
    }

这篇关于如何使用swift 4显示像facebook上传图片这样的collectionView?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！