使用表格单元格内的按钮从原型单元格传递数据

Question

我有动态填充原型单元格的数据。 它只会根据需要创建尽可能多的数据单元。 我遇到的问题是单击 UIButton 时将数据传递到详细视图。

在每个动态单元格内都有一个 UIButton，按下该按钮时会将单元格内的任何数据传递到详细视图中。

将数据加载到表格视图中没有问题，我只是无法正确传递值。

这是我在行的单元格：

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

    let part = partList[0]

    cell.a.text = String(part.a)
    cell.b.text = part.b
    cell.c.text = part.c
    cell.d.text = part.d
    cell.e.text = part.e
    cell.f.text = part.f

    self.tableView.rowHeight = 250
    cell.layer.borderColor = UIColor.darkGray.cgColor
    cell.layer.borderWidth = 1
    cell.layer.cornerRadius = 5
    cell.clipsToBounds = true
  //tried using tags, but no luck
    //cell.myButton.tag = indexPath.row

    return cell
}

为了彻底，我为表格单元格设置了一个自定义类。

class partsTableCell: UITableViewCell {
    @IBOutlet weak var a: UILabel!
    @IBOutlet weak var b: UILabel!
    @IBOutlet weak var c: UILabel!
    @IBOutlet weak var d: UILabel!
    @IBOutlet weak var e: UILabel!
    @IBOutlet weak var f: UILabel!
    @IBOutlet weak var myButton: UIButton!
}

这是我传递数据的地方：

    func prepare(for segue: UIStoryboardSegue, sender: UIButton) {


        if (segue.identifier == "partDetail") {
            let detailVC = segue.destination as? PartsVCDetail
            let indexPath = self.tableView.indexPathForSelectedRow
            let part = dataList[indexPath.row]
            detailVC?.a = part.a!
            detailVC?.b = part.b!
            detailVC?.c = part.c!
            detailVC?.d = part.d!
            detailVC?.e = part.e!
            detailVC?.f = part.f

        }
}

一切正常，但是当我单击按钮并执行 segue 时。数据在另一侧显示为空白或 nil。

我是否遗漏了一些明显的东西？

任何帮助都会很棒！

谢谢

编辑--

这就是我设置详细 VC 的方式

@IBOutlet weak var qq: UILabel!
@IBOutlet weak var ww: UILabel!
@IBOutlet weak var ee: UILabel!
@IBOutlet weak var rr: UILabel!
@IBOutlet weak var tt: UILabel!
@IBOutlet weak var yy: UILabel!
@IBOutlet weak var uu: UILabel!

var a: Int64!
var b: String = ""
var c: String = ""
var d: String = ""
var e: String = ""
var f: String = ""
var g: String = ""


override func viewDidLoad() {
    super.viewDidLoad()
    //lineNumber.text = "test"

    print(a,"************")
    print(b, "************")
    print(c, "************")
    print(d, "************")
    print(e, "************")
    print(f,"************")
//ALL DATA ABOVE IS EITHER NULL OR EMPTY

    qq.text = a as! String
    ww.text = b
    ee.text = c
    rr.text = d
    tt.text = e
    yy.text = f
    uu.text = g

}

Answer 1

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

let part = partList[0]

cell.a.text = String(part.a)
cell.b.text = part.b
cell.c.text = part.c
cell.d.text = part.d
cell.e.text = part.e
cell.f.text = part.f

self.tableView.rowHeight = 250
cell.layer.borderColor = UIColor.darkGray.cgColor
cell.layer.borderWidth = 1
cell.layer.cornerRadius = 5
cell.clipsToBounds = true

// give tag to your button and add target
cell.myButton.tag = indexPath.row
cell.myButton.addTarget(self, action: #selector(myButtonAction), for: .touchUpInside)

return cell

}

@objc func myButtonAction(sender:UIButton)  {
// in button action do your stuff like below

let part = partList[sender.tag]

let detailVC = UIStoryboard(name: "YourStoryBoard", bundle: nil).instantiateViewController(withIdentifier: "partDetail") as! PartsVCDetail
detailVC?.a = part.a!
detailVC?.b = part.b!
detailVC?.c = part.c!
detailVC?.d = part.d!
detailVC?.e = part.e!
detailVC?.f = part.f
self.navigationController?.pushViewController(detailVC, animated: true)

}