iOS如何知道哪个按钮被按下了带有自定义委托的CollectionView [英] iOS how know which button is pressed CollectionView with custom delegate

问题描述

所以我在一个集合视图中有一个单元格，里面有 3 个按钮.为了使用这些按钮触发代码，我实现了一个自定义委托.现在代码正在被触发，但我不知道代码是从哪个单元格触发的.我怎样才能最好地实现这一点?这是我的一些代码.协议:

So I have a cells in a collectionview with 3 buttons in it. To trigger code with these buttons I have implemented a custom delegate. Now the code is being triggered, but I don't know from which cell the code triggered. How can I best implement this? Here is some of my code. Protocol:

protocol OverViewDelegate {
func registerButtonClicked()
func evaluateButtonClicked()
func overviewButtonClicked()
}

cellForItemAt:

cellForItemAt:

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "sessionCell", for: indexPath) as? SessionCollectionViewCell
    let session: SessionModel
    session = DebugData.shared.sessionArray[indexPath.row]

    cell?.sessionImage.image = #imageLiteral(resourceName: "carControl")
    cell?.sessionNameLabel.text = session.name
    cell?.sessionLocationLabel.text = session.location
    cell?.overViewDelegate = self

    return cell!
}

单元格:

import UIKit

导入 IBAnimatable

import IBAnimatable

@IBOutlet weak var sessionImage: UIImageView!
@IBOutlet weak var sessionNameLabel: UILabel!
@IBOutlet weak var sessionLocationLabel: UILabel!
@IBOutlet weak var sessionRegisterButton: AnimatableButton!
@IBOutlet weak var sessionOverviewButton: AnimatableButton!
@IBOutlet weak var sessionEvaluateButton: AnimatableButton!

var overViewDelegate: OverViewDelegate?

@IBAction func registerButtonClicked(_ sender: Any) {
    overViewDelegate?.registerButtonClicked()
}

@IBAction func overviewButtonClicked(_ sender: Any) {
    overViewDelegate?.overviewButtonClicked()
}

@IBAction func evaluateButtonClicked(_ sender: Any) {
    overViewDelegate?.evaluateButtonClicked()
}

如有任何帮助，将不胜感激.

Any help would be appriciated.

推荐答案

在Cell类中传递indexPath值在Button Click函数中返回indexPath

Pass indexPath value in Cell class return back indexPath on Button Click function

协议:-

protocol OverViewDelegate {
func registerButtonClicked(_ indexPath : IndexPath)
func evaluateButtonClicked(_ indexPath : IndexPath)
func overviewButtonClicked(_ indexPath : IndexPath)
}

cellForItemAt:

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "sessionCell", for: indexPath) as? SessionCollectionViewCell
        let session: SessionModel
        session = DebugData.shared.sessionArray[indexPath.row]

        cell?.sessionImage.image = #imageLiteral(resourceName: "carControl")
        cell?.sessionNameLabel.text = session.name
        cell?.sessionLocationLabel.text = session.location
        cell?.overViewDelegate = self
        cell?.indexPath = indexPath

        return cell!
    }

单元格:

@IBOutlet weak var sessionImage: UIImageView!
@IBOutlet weak var sessionNameLabel: UILabel!
@IBOutlet weak var sessionLocationLabel: UILabel!
@IBOutlet weak var sessionRegisterButton: AnimatableButton!
@IBOutlet weak var sessionOverviewButton: AnimatableButton!
@IBOutlet weak var sessionEvaluateButton: AnimatableButton!

var overViewDelegate: OverViewDelegate?
var indexPath : IndexPath?

@IBAction func registerButtonClicked(_ sender: Any) {
    overViewDelegate?.registerButtonClicked(indexPath)
}

@IBAction func overviewButtonClicked(_ sender: Any) {
    overViewDelegate?.overviewButtonClicked(indexPath)
}

@IBAction func evaluateButtonClicked(_ sender: Any) {
    overViewDelegate?.evaluateButtonClicked(indexPath)
}

使用 :-

let cell = tableView.cellForRow(at: indexPath)

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