将 UITableViewController 中选定单元格的“正确"数据传递给 ViewController [英] Passing the “correct” Data from the selected cell in a UITableViewController to a ViewController

问题描述

我遇到了同样的问题 这里 我还没有想出如何将正确的数据从 TableViewController 传递到另一个 ViewController.我从 JSON 获取数据我拥有我需要的一切，但是通过选择任何行数据显示的是最后一行中的数据.我需要获取有关我选择 TableViewController 的确切行的信息.

I'm having the very same trouble here I have not figured out yet how to pass the correct data from TableViewController to another ViewController. I get data from JSON I have everything I need but by selecting any row data showing is the data in the last row. I need to get the information about the exact row I select the TableViewController.

import UIKit

class TableViewController: UITableViewController {

var TableData:Array< String > = Array < String >()

func getData(_ link: String) {
    let url: URL = URL(string: link)!
    let session = URLSession.shared
    let request = NSMutableURLRequest(url: url)
    request.httpMethod = "GET"
    request.cachePolicy = NSURLRequest.CachePolicy.reloadIgnoringCacheData

    let task = session.dataTask(with: request as URLRequest, completionHandler: {
        (data, response, error) in
        guard let _: Data = data , let _: URLResponse = response , error == nil else {
            return
        }
        self.extractJSON(data!)
    })
    task.resume()
}

func extractJSON(_ data: Data) {
    let json: Any?
    do {
        json = try JSONSerialization.jsonObject(with: data, options: [])
    } catch {
        return
    }
    guard let dataList = json as? NSArray else {
        return
    }
    if let countriesList = json as? NSArray {
        for i in 0 ..< dataList.count {
            if let countriesObj = countriesList[i] as? NSDictionary {
                if let countryName = countriesObj["country"] as? String {
                    if let countryCode = countriesObj["code"] as? String {
                        TableData.append(countryName + " [" + countryCode + "]")
                        UserDefaults.standard.set(String(describing: countryName), forKey: "name")
                        UserDefaults.standard.set(String(describing: countryCode), forKey: "code")
                        UserDefaults.standard.synchronize()
                    }
                }
            }
        }
    }

    DispatchQueue.main.async(execute: {self.doTableRefresh()})
}

func doTableRefresh() {
    self.tableView.reloadData()
}

override func viewDidLoad() {
    super.viewDidLoad()
    self.tableView.delegate = self
    self.tableView.dataSource = self
    getData("http://www.kaleidosblog.com/tutorial/tutorial.json")
}

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

// 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 TableData.count
}

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

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

    return cell
}
}

推荐答案

可以使用 tableViewDidSelectRowAtIndexPath 委托方法

let string = TableData[indexPath.row]

获取您的数据并将其传递给 vc

to get your data and pass it to vc

 func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
   let string = TableData[indexPath.row]

    let vc = // Your VC From Storyboard 
    vc.data =  string // 
    self.navigationController?.pushViewController(vc, animated: true)
}

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