ios - 单击单元格时如何使用另一个数组更新 UICollectionView？

Question

我在一个 View Controller 上有 3 个 Collection View ，如何在我单击一个 Collection View 单元格时更新另一个 Collection View 数据

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
    {
        if collectionView == CollectionViewBottom
        {
            if indexPath.item == 14
            {
           ////what code i should write here to update collection view
                HeadingLabel.text = "Solar"
               CollectionViewMID.reloadData()

            }
         }         
}

Answer 1

我有一个例子给你。希望对你有帮助

var arr : [String] = []

var collectionView:UICollectionView!

override func viewDidLoad()
{
    super.viewDidLoad()

    arr = ["ONE","TWO","THREE"]
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
{
   if indexPath.row == 1
   {
       arr = ["ABC", "EFG", "HIJ"]
       collectionView.reloadData()
   }
   else if indexPath.row == 2
   {
       arr = ["1", "2", "3"]
       collectionView.reloadData()
   }
}