将数据从 tableview 传递到另一个 tableview

Question

我是 swift 的初学者，我真的很想解决这个问题。我正在尝试将数据从 tableview 传递到另一个，但是当我运行代码时，它只显示一个空白的 tableview。这是我在源 tableviewcontroller 中的代码：

import UIKit

class C1TableViewController: UITableViewController {

var categorisePagePOneName = ["CLOTHING", "SHOES", "ACCESSORIES", "THEME"]
var selectedIndex = Int()



override func viewDidLoad() {
    super.viewDidLoad()

override func numberOfSections(in tableView: UITableView) -> Int {

    return 1
}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return categorisePagePOneName.count
}


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cellIdt = "Conecell"
  let cell = tableView.dequeueReusableCell(withIdentifier: cellIdt, for: indexPath) as! C1TableViewCell

    cell.textLabel?.text = categorisePagePOneName[indexPath.row]


    // Configure the cell...

    return cell
}


func laodForNextPage(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath, segue: UIStoryboardSegue, sender: AnyObject?) {
    performSegue(withIdentifier: "connect2", sender: self)
    self.selectedIndex = indexPath.row
    if segue.identifier == "connect2" {
        let vc = segue.destination as! C2TableViewController
        vc.firstRow = categorisePagePOneName[self.selectedIndex]

    }
}

}

然后这是我在另一个 tableViewController 中的代码：

import UIKit

class C2TableViewController: UITableViewController {

var firstRow: String!


var secondArray: [String] = []


var clothingCat = ["ALL CLOTHING", "THEME", "JACKET", "T-SHIRT", "SHIRT", "SWEATSHIRT", "HOODIES", "PANTS", "JEANS", "SHORTS", "KNITWEAR", "VESTS"]

var shoesCat = ["ALL SHOES", "THEME", "BOOTS", "SANDALS", "SNEAKERS"]

var asscessoriesCat = ["ALL ASSCESSORIES", "THEME", "HAT","BAGS", "JEWELLERY", "EYEWEAR", "WATCHES", "WALLETS", "SOCKS", "UNDERWEAR"]

var themeCat = ["VINTAGE", "KOREA","JAPAN", "SPORTY"]


override func viewDidLoad() {
    super.viewDidLoad()
    }

// MARK: - Table view data source

override func numberOfSections(in tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return secondArray.count
}


override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {


    let cell = tableView.dequeueReusableCell(withIdentifier: "C2", for: indexPath) as! C2TableViewCell

    // Configure the cell...

    switch firstRow {
     case "CLOTHING":
         secondArray = clothingCat

     case "SHOES":
         secondArray = shoesCat

     case "ASSCESSORIES":
     secondArray = asscessoriesCat

     case "THEME":
         secondArray = themeCat

     default:
         break
     }
    cell.textLabel?.text = secondArray[indexPath.row]


    return cell
}

}

我不确定在这种情况下我是否正确使用了 switch

Answer 1

替换（自定义方法laodForNextPage反正也没用）

func laodForNextPage(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath, segue: UIStoryboardSegue, sender: AnyObject?) {
    performSegue(withIdentifier: "connect2", sender: self)
    self.selectedIndex = indexPath.row
    if segue.identifier == "connect2" {
        let vc = segue.destination as! C2TableViewController
        vc.firstRow = categorisePagePOneName[self.selectedIndex]

    }
}

与

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
    performSegue(withIdentifier: "connect2", sender: indexPath)
}

并实施

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "connect2" {
        let indexPath = sender as! IndexPath
        let vc = segue.destination as! C2TableViewController
        vc.firstRow = categorisePagePOneName[indexPath.row]
    }
}

你可以删除selectedIndex

Answer 2

发送者为indexPath时需要添加此函数

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

}