Swift - 单击行后在表格视图中显示每一行的数据

Question

在单击行后在 tableview 中显示每一行的数据时出现问题，我想使用 didselectRowAtIndexPath，而不是没有它！ :)

ViewController.swift

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
   @IBOutlet weak var tableView: UITableView!

   let textToDisplayInCell:[String] = ["item 1", "item 2", "item 3", "item 4"]
   let textDataforEachRowWhenClicked:[String] = ["first item", "second item ", "third item", "fourth item"]

    override func viewDidLoad() {
       super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
       self.tableView.delegate = self
       self.tableView.dataSource = self
    }

    override func didReceiveMemoryWarning() {
       super.didReceiveMemoryWarning()
       // Dispose of any resources that can be recreated.
    }

    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.textToDisplayInCell.count
    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell:UITableViewCell = tableView.dequeueReusableCellWithIdentifier("Tablecell") as! UITableViewCell
        cell.textLabel!.text = self.textToDisplayInCell[indexPath.row]
        return cell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        self.performSegueWithIdentifier("toDetailSegue", sender: self)
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        var whatToPass = self.textDataforEachRowWhenClicked
        let detailVC = segue.destinationViewController as! DetailViewController
        detailVC.array = whatToPass
    }
}

DetailViewcontroller.swift

导入 UIKit

class DetailViewController: UIViewController {
@IBOutlet weak var label: UILabel!

var array:[String] = [String]()

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
    var connection = self.array
    self.label.text = String(stringInterpolationSegment: connection)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

我在单击每一行后得到了这个，相同的数据，当单击第 1 行时，我想要在 detailviewcontroller 的标签中显示第一个项目，依此类推，其他行，帮助，ty

Answer 1

    import UIKit

    class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    @IBOutlet weak var tableView: UITableView!


    let textToDisplayInCell:[String] = ["item 1", "item 2", "item 3", "item 4"]
    let textDataforEachRowWhenClicked:[String] = ["first item", "second item ", "third item", "fourth item"]
    var selectedValue:String!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        self.tableView.delegate = self
        self.tableView.dataSource = self
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

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

        return self.textToDisplayInCell.count

    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
       let cell:UITableViewCell = tableView.dequeueReusableCellWithIdentifier("Tablecell") as! UITableViewCell
       cell.textLabel!.text = self.textToDisplayInCell[indexPath.row]
       return cell
    }

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        selectedValue = textDataforEachRowWhenClicked[indexPath.row] as String
        self.performSegueWithIdentifier("toDetailSegue", sender: self)
    }

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

        let detailVC = segue.destinationViewController as! DetailViewController
        detailVC.message = selectedValue
     }
 }

在详细视图中：

class DetailViewController: UIViewController {
@IBOutlet weak var label: UILabel!

var message:String!

override func viewDidLoad() {
    super.viewDidLoad()
    var message = self.message
    self.label.text = message
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

Answer 2

在 prepareForSegue 中，您将整个数组传递给子控制器，而不是单个特定元素。您需要在 didSelectRowAtIndexPath 中为要传递的元素设置一些变量 (_rowToPass)，并在 prepareForSegue 中仅传递该元素。

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {


    _rowToPass = indexPath.row 
    self.performSegueWithIdentifier("toDetailSegue", sender: self)
}



override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    var whatToPass = self.textDataforEachRowWhenClicked[_rowToPass]

    let detailVC = segue.destinationViewController as! DetailViewController

    detailVC.array = whatToPass

 }