ios - swift 中的 Collection View 单元格高度和宽度

Question

Collection View 有多个图像工作正常。显示是这样的

但是我想这样显示

这是 Collection View 单元格的代码

 let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
 layout.sectionInset = UIEdgeInsets(top: 10, left: 0, bottom: 20, right: 0)
 let width = UIScreen.main.bounds.width
 layout.itemSize = CGSize(width: width/2 , height: width/2 )
 layout.minimumInteritemSpacing = 0
 layout.minimumLineSpacing = 0
 collectionView!.collectionViewLayout = layout

Answer 1

只需实现一些 UICollectionViewDelegateFlowLayout 方法即可获得 UICollectionViewCells 的正确大小和间距。

示例:

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
{
    let cellSize = CGSize(width: (collectionView.bounds.width - (3 * 10))/2, height: 120)
    return cellSize
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat
{
    return 10
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets
{
    let sectionInset = UIEdgeInsetsMake(10, 10, 10, 10)
    return sectionInset
}

只需根据您的要求更改大小和间距值即可。