如何在 swift 4 中在中心显示 CollectionViewCell [英] How to display CollectionViewCell in center in swift 4

问题描述

Collectionview 单元格在一行中有两个项目，但 Collectionview 单元格不在我的设计中.

Collectionview cell has a two item in one row, But Collectionview cell doesn't center in my design.

如何以中心对齐方式显示 collectionViewCell?我想显示如下图

How can I display the collectionViewCell in center alignment? I want to display like the following image

我尝试了很多次，无法显示CollectionView的中心.请帮帮我！

I am trying many times, can't display the center of CollectionView. Please Help me!

推荐答案

工作代码 Swift 4 |斯威夫特 5

你需要像这样使用UICollectionViewDelegateFlowLayout方法

class CardListViewController:UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout{
    
    // UICollectionViewDelegateFlowLayout Delegate method

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
    {
        let leftAndRightPaddings: CGFloat = 45.0
        let numberOfItemsPerRow: CGFloat = 2.0
    
        let width = (collectionView.frame.width-leftAndRightPaddings)/numberOfItemsPerRow
        return CGSize(width: width, height: width) // You can change width and height here as pr your requirement
    
    }
}

输出:

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