我如何使用 withReuseIdentifier

Question

如何使用多个withReuseIdentifier？

这是代码 因为我有 4 个按钮不起作用 当我使用标识符“1”时，其他按钮不起作用

这是代码

extension ViewController : UICollectionViewDataSource
{
func numberOfSections(in collectionView: UICollectionView) -> Int
{
    return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
{
    return interests3.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
{
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "1", for: indexPath as IndexPath) as! interestCollectionViewCell
    cell.interest2 = self.interests3[indexPath.item]
    return cell
}

新代码

    import UIKit

class interestCollectionViewCell: UICollectionViewCell
{

    var interest2: Interest1! {
        didSet {
            updateUI()

        }

    }
    @IBOutlet weak var futerdimageview: UIImageView!
    @IBOutlet weak var interstTitleLabel: UILabel!


    private func updateUI()
    {
        interstTitleLabel.text! = interest2.title
        futerdimageview.image = interest2.featuredImage!


    }
    override func layoutSubviews() {
        super.layoutSubviews()
        self.layer.cornerRadius = 10.0
        self.clipsToBounds = true
    }
}

还有这段代码

    import UIKit

class Interest1
{
    var title = ""
    var description = ""
    var featuredImage: UIImage!
    var button1: UIButton!
    var button2: UIButton!
    var button3: UIButton!
    var button4: UIButton!



    init(title: String, featuredImage: UIImage!)
    {
        self.title = title
        self.featuredImage = featuredImage



    }

    static func createInterest() -> [Interest1]
    {

        return [
           Interest1(title: "One", featuredImage: UIImage(named:"001.png")!),
            Interest1(title: "Two", featuredImage: UIImage(named:"002.png")!),
            Interest1(title: "Three", featuredImage: UIImage(named:"003.png")!),
            Interest1(title: "Four", featuredImage: UIImage(named:"004.png")!),




        ]

    }
       }

Answer 1

试试这个，在你的 viewDidLoad 方法中添加

self.collectionView.register(interestCollectionViewCell.self, forCellWithReuseIdentifier: "1")
self.collectionView.register(interestCollectionViewCell.self, forCellWithReuseIdentifier: "2")
self.collectionView.register(interestCollectionViewCell.self, forCellWithReuseIdentifier: "3")
self.collectionView.register(interestCollectionViewCell.self, forCellWithReuseIdentifier: "4")

并更改您的 collectionView cellForItemAt

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "1", for: indexPath as IndexPath) as? interestCollectionViewCell
        {
            cell.interest2 = self.interests3[indexPath.item]
            return cell
        } else if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "2", for: indexPath as IndexPath) as? interestCollectionViewCell
        {
            cell.interest2 = self.interests3[indexPath.item]
            return cell

        } else if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "3", for: indexPath as IndexPath) as? interestCollectionViewCell
        {
            cell.interest2 = self.interests3[indexPath.item]
            return cell

        } else if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "4", for: indexPath as IndexPath) as? interestCollectionViewCell
        {
            cell.interest2 = self.interests3[indexPath.item]
            return cell
        }
     return interestCollectionViewCell()
}