Question

我正在尝试在另一个collectionView内创建collectionViewCell。我可以得到外collectionView的单元格，但编译器没有执行内部单元格。我怎样才能得到这两个细胞？

P.S我是新人。

CollectionViewController类：

class CollectionViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout{

@IBOutlet var collectionView1: UICollectionView!

var coll2 = CollectionViewCell()
override func viewDidLoad() {
    super.viewDidLoad()
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

   return 3
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: view.frame.width, height: 150)
}

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)as! CollectionViewCell
    cell.backgroundColor = UIColor.black

    return cell

}

}

CollectionViewCell CLass：

class CollectionViewCell: UICollectionViewCell  {

@IBOutlet var collectionView2: UICollectionView!

 func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 1
 }

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: collectionView2.frame.width, height: 150)
}

 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell1 = collectionView.dequeueReusableCell(withReuseIdentifier: "cell2", for: indexPath)as! CollectionViewCell2

    cell1.backgroundColor = UIColor.red

    return cell1

 }

enter image description here }

Answer 1

将内部集合视图的委托和数据源设置为第一个集合视图单元格。

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Answer 2

string Url = "https://www.rottentomatoes.com/browse/dvd-all/?services=netflix_iw"; HtmlAgilityPack.HtmlDocument htmlDoc = new HtmlWeb().Load(Url); IEnumerable<string> movieTitles = from movieNode in htmlDoc.DocumentNode.Descendants() where movieNode.GetAttributeValue("class", "").Equals("movieTitle") select movieNode.InnerHtml;未设置CollectionViewCell的原因是您未将collectionView2的{{1}}和delegate属性设置为dataSource的实例collectionView2。

我在CollectionViewCell中创建了一个名为setupViews的方法，以便在CollectionViewCell中出现CollectionViewCell时可以调用它，以便委托和dataSource正在设置得当。

CollectionViewController

class CollectionViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout {

  override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 3
  }


  func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: view.frame.width, height: 150)
  }

  override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath)as! CollectionViewCell

    cell.backgroundColor = UIColor.black
    cell.setupViews() // added this call

    return cell
  }

}

另一个CollectionViewCell里面的CollectionView

2 个答案: