Swift：将数据从 tableView 显示到另一个 ViewController（JSON、Alamorife、AlamofireImage）

Posted 2023-02-24

【中文标题】Swift：将数据从 tableView 显示到另一个 ViewController（JSON、Alamorife、AlamofireImage）

【英文标题】：Swift: Show data from tableView to another ViewController (JSON, Alamorife, AlamofireImage)

【发布时间】：2018-06-26 06:53:44

【问题描述】：

我正在尝试做一个从 JSON 获取数据的应用程序。

在下图中您可以看到该项目： Project 如果我们点击照片会打开详细信息页面。问题是因为我不知道如何获取详细信息页面中显示的数据。请帮我。 这是代码

import UIKit
import Alamofire
import AlamofireImage
import SwiftyJSON

class ViewController: UIViewController ,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate 

    @IBOutlet weak var searchbarValue: UISearchBar!
    weak open var delegate: UISearchBarDelegate?
    @IBOutlet weak var tableView: UITableView!

    var albumArray = [AnyObject]()
    var url = ("https://jsonplaceholder.typicode.com/photos")

        override func viewDidLoad() 
            super.viewDidLoad()
            // Do any additional setup after loading the view, typically from a nib.
             self.searchbarValue?.delegate = self
                  Alamofire.request("https://jsonplaceholder.typicode.com/photos").responseJSON  (responseData) -> Void in
                if((responseData.result.value) != nil) 
                    let swiftyJsonVar = JSON(responseData.result.value!)
                       if let resData = swiftyJsonVar[].arrayObject 
                        self.albumArray = resData as [AnyObject]; ()
                    
                    if self.albumArray.count > 0 
                        self.tableView.reloadData()
                    
                
            

        
    public func searchBarTextDidEndEditing(_ searchBar: UISearchBar) // called when text ends editing
    
        callAlamo(searchTerm: searchbarValue.text!)
    

    func callAlamo(searchTerm: String)
    
        Alamofire.request("https://jsonplaceholder.typicode.com/photos").responseJSON  (responseData) -> Void in
            if((responseData.result.value) != nil) 
                let swiftyJsonVar = JSON(responseData.result.value!)
                if let resData = swiftyJsonVar[].arrayObject 
                    self.albumArray = resData as [AnyObject]; ()
                
                if self.albumArray.count > 0 
                    self.tableView.reloadData()
                
            
        
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
        return albumArray.count
    

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

        let title = albumArray[indexPath.row]
        cell?.titleLabel?.text = title["title"] as? String
        //cell?.url?.image = UIImage(data: title as! Data)
        let imageUrl = title["thumbnailUrl"] as? String
        //print(imageUrl)

        let urlRequest = URLRequest(url: URL(string: imageUrl!)!)
        Alamofire.request(urlRequest).responseImage  response in

            if let image = response.result.value 
               // print("image downloaded: \(title["url"])")
                cell?.url?.image = image
            
        
        return cell!
    

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) 
        performSegue(withIdentifier: "showDetails", sender: self)
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) 
        let indexPath = self.tableView.indexPathForSelectedRow?.row

        let vc = segue.destination as! DetailsViewController
       //here should be the code
    

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

你还可以看到DetailsViewController代码：

import UIKit

class DetailsViewController: UIViewController 

    var image2 = UIImage()
    var title2 = String()

    @IBOutlet var mainImageView: UIImageView!
    @IBOutlet var songTitle: UILabel!

    override func viewDidLoad() 

        songTitle.text = title2
        mainImageView.image = image2
    

【参考方案1】：

您可以使用以下代码轻松地将值从表视图传递到详细视图：

override func prepare(for segue: UIStoryboardSegue, sender: Any?) 
    let indexPath = self.tableView.indexPathForSelectedRow

    let cell : CostumTableViewCell = self.tableView.cellForRow(at: indexPath!) as! CostumTableViewCell

    let vc = segue.destination as! DetailsViewController

    vc.image2 = cell.url.image!
    vc.title2 = cell.titleLabel.text!
    

【参考方案2】：

class ViewController: UIViewController ,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate 


var customArr = [CustomElement]()
var arr = [Any]()

// In viewDidLoad , you can append element to customArr


func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) 

    var image = customArr[indexpath.row].image
    var title = customArr[indexpath.row].title

    arr.append(image)
    arr.append(title)

    performSegue(withIdentifier: "showDetails", sender: arr)



override func prepare(for segue: UIStoryboardSegue, sender: Any?) 
    let indexPath = self.tableView.indexPathForSelectedRow?.row

    if segue.identifier = "showDetails" 
        if let vc = segue.destination as! DetailsViewController 
        vc.arr = sender
        

    

   //here should be the code








class DetailsViewController: UIViewController 

    var arr = [Any]()