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

本文介绍了如何使用swift 4显示像facebook上传图片这样的collectionView?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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) }

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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) } }