Swift:将数据从tableView显示到另一个ViewController(JSON，Alamorife，Alamo

Question

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： 项目
如果我们单击照片将打开详细信息页面。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。请帮助我。 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.
}
}

您还可以看到 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
}
}

Answer 1

您可以使用以下代码轻松地将值从表视图传递到详细信息视图：

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!
}

Answer 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]()
}