我有这个 JSON 数据
移动.json
{
"status":"ok",
"movement":
[
{
"refno":"REF 1",
"dtfrom":"2017-13-12"
},
{
"refno":"REF 2",
"dtfrom":"2017-13-13"
},
{
"refno":"REF 3",
"dtfrom":"2017-13-14"
},
]
}
到目前为止,我设法将值提取到 TableViewCell 中。
但我的目标是将值从 ViewController.swift 传递到 MoveDetails.swift 以便该值可以显示在 MoveDetails.swift
我有这四个 swift 文件。我在 ViewController.swift 和 MoveDetails.swift 上遇到了问题。我不确定如何将值传递给新的 Controller 。
代码如下。
ViewController.swift
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
@IBOutlet weak var tableview: UITableView!
var move: [Move]? = []
override func viewDidLoad() {
super.viewDidLoad()
fetchData()
}
func fetchData() {
let urlRequest = URLRequest(url: URL(string: "http://localhost/move.json")!)
let task = URLSession.shared.dataTask(with: urlRequest) {
(data,response,error)in
if error != nil { return }
self.move = [Move]()
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as! [String: AnyObject]
if let msFromJson = json["movement"] as? [[String: AnyObject]] {
for mFromJson in msFromJson {
let ms = Move()
if let refno = mFromJson["refno"] as? String, let dtfrom = mFromJson["dtfrom"] as? String {
ms.refno = refno
ms.dtfrom = dtfrom
}
self.move?.append(ms)
}
}
DispatchQueue.main.async {
self.tableview.reloadData()
}
}
catch let error{ print(error)}
}
task.resume()
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "movementstatusCell", for: indexPath) as! MoveCell
cell.refnoLbl.text = self.move?[indexPath.item].refno
cell.dtfromLbl.text = self.move?[indexPath.item].dtfrom
return cell
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.move?.count ?? 0
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let vc = self.storyboard?.instantiateViewController(withIdentifier: "MoveDetails") as! MoveDetails
let selectedMove = self.move?[indexPath.item]
vc.refnoString = selectedMove.refno
vc.dtfromString= selectedMove.dtfrom
self.navigationController?.pushViewController(vc, animated: true)
}
}
MoveCell.swift
import UIKit
class MoveCell: UITableViewCell {
@IBOutlet weak var dtfromLbl: UILabel!
@IBOutlet weak var refnoLbl: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
}
移动.swift (NSObject)
import UIKit
class Move: NSObject {
var refno: String?
var dtfrom: String?
}
MoveDetails.swift
import UIKit
class MoveDetails: UIViewController {
@IBOutlet weak var refnoLbl: UILabel!
@IBOutlet weak var dtfromLbl: UILabel!
var refnoString: String!
var dtfromString: String!
override func viewDidLoad() {
super.viewDidLoad()
refnoString = refnoLbl.text
dtfromString = dtfromLbl.text
}
override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() }
}
感谢有人能提供帮助。谢谢。
最佳答案
您只需设置MoveDetails
View Controller 的属性。作为建议
- 不是在
MoveDetails
中存储refnoString
和dtfromString
属性,您可以只存储一个Move
类型的属性: - 缓存
MoveDetails
View Controller 以重用它 - 实现
viewDidAppear
以更新MoveDetails
socket
所以:
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var detailsVC : MoveDetails?
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if (detailsVC == nil) {
detailsVC = self.storyboard?.instantiateViewController(withIdentifier: "MoveDetails") as! MoveDetails
}
detailsVC.move = self.move?[indexPath.item]
self.navigationController?.pushViewController(detailsVC , animated: true)
}
}
然后,覆盖 MoveDetails
View Controller 中的 viewDidAppear
,然后您只需将值填入文本标 checkout 口即可。
class MoveDetails: UIViewController {
@IBOutlet weak var refnoLbl: UILabel!
@IBOutlet weak var dtfromLbl: UILabel!
var move:Move?
override func func viewDidAppear(_ animated: Bool) {
refnoLbl.text = move?.refno
dtfromLbl.text = move?.dtfrom
}
}
语法错误是因为我目前没有可用的 Xcode 来进行检查
关于ios - 如何将 TableViewCell 值传递给 Swift 3.0 中的新 ViewController?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42220443/