Question

我很难通过自定义单元格中的按钮传递数据。所以我有一个自定义单元格，有一个按钮。在单元格的TableViewCell中，按钮被声明为

@IBOutlet var UserEdit: RoundButton!

然后在具有自定义单元格的ViewController中，按钮被赋予一个动作。

@IBAction func EditClicked(_ sender: UIButton) -> Void {

       let indexPath = self.selectedIndex
        performSegue(withIdentifier: "EditPost", sender: indexPath)


    }

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cells", for: indexPath) as! ProfileTableViewCell

cell.UserEdit.addTarget(self, action: #selector(EditClicked), for: UIControlEvents.touchUpInside)
        cell.UserEdit.tag = indexPath.row
        print(indexPath.row)
        cell.UserEdit.isUserInteractionEnabled = true
}

并且segue工作得很好但是，我想传递单击按钮的单元格的信息，所以我这样做：

 override public func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    guard segue.identifier == "Hello", let chatVc = segue.destination as? SendMessageViewController else {
        return
    }

    chatVc.senderId = self.loggedInUser?.uid
    chatVc.receiverData = self.userpicuid
    chatVc.senderDisplayName = self.userpicuid
    chatVc.username = self.username

           if segue.identifier == "EditPost" {

            if let indexPath = sender as? IndexPath {
                let vc = segue.destination as! EditPostViewController
                let post = self.posts[indexPath.row] as! [String: AnyObject]
                let Booked = post["title"] as? String
                let Authors = post["Author"] as? String
                let ISBNS = post["ISBN"] as? String
                let Prices = post["Price"] as? String
                let imageNames = post["image"] as? String
                vc.Booked = Booked
                vc.Authors = Authors
                vc.ISBNS = ISBNS
                vc.Prices = Prices
                vc.imageNames = imageNames

                print(indexPath.row)
            }
        }}

在目标视图控制器中，我有：

 @IBOutlet var Author: UITextField!
    @IBOutlet var Price: UITextField!

    @IBOutlet var Books: UIImageView!
    @IBOutlet var ISBN13: UITextField!

    @IBOutlet var ISBN10: UITextField!
    @IBOutlet var CoverType: UITextField!
    @IBOutlet var Details: UITextField!

 var Booked: String?
    var Authors: String?
    var ISBNS: String?
    var Prices: String?
    var imageNames: String?

 override func viewDidLoad() {
        super.viewDidLoad()

        self.BookTitle.text = self.Booked
        self.Author.text = self.Authors
        self.ISBN10.text = self.ISBNS
        self.Price.text = self.Prices
}

但是当我点击按钮时没有传递任何信息。目标视图控制器中的文本字段为空。

Answer 1

按照以下步骤轻松完成任务。首先在你的UITableViewCell类中定义一个按钮属性，就像下面的函数..

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)
    // Configure the view for the selected state
}

添加此行

var editBtnClickFunction: (() -> Void)? = nil

在此行之后，在您的按钮单击操作中添加一点代码。

if let onButtonTapped = self. editBtnClickFunction {
        onButtonTapped()
    }

现在使用UITableViewDataSource和Delegate
进入主控制器
在cellForRowAt功能中，在return cell声明
之前添加其他代码

cell. editBtnClickFunction = {
   performSegue(withIdentifier: "EditPost", sender: indexPath.row)
}

现在是你的segue准备方法中的最终代码

if segue.identifier == "EditPost" {
if sender != nil {
let index : Int = Int(sender! as! String)
            let vc = segue.destination as! EditPostViewController
            let post = self.posts[index] as! [String: AnyObject]
            let Booked = post["title"] as? String
            let Authors = post["Author"] as? String
            let ISBNS = post["ISBN"] as? String
            let Prices = post["Price"] as? String
            let imageNames = post["image"] as? String
            vc.Booked = Booked
            vc.Authors = Authors
            vc.ISBNS = ISBNS
            vc.Prices = Prices
            vc.imageNames = imageNames
        }
    }

希望这会对你有所帮助

Answer 2

按如下方式更改此行

cell.UserEdit.addTarget(self, action: #selector(EditClicked(sender:)), for: UIControlEvents.touchUpInside)

并按如下所示更改目标方法声明

@IBAction func EditClicked(sender: UIButton) -> Void {

   let indexPath = self.selectedIndex
    performSegue(withIdentifier: "EditPost", sender: indexPath)


}

尝试按上述方式更改代码。

使用自定义单元格

2 个答案: