迅速将数据从带有段的表视图单元格传递到另一个视图控制器

Question

我在传递数据

以清楚的情况下遇到了问题，我将解释我从事的工作的想法以及问题所在。

这个想法是在第一个视图控制器中，用户将输入标题和描述，然后从弹出按钮的选项中选择，这些选项为（Exchange，Exchange，Borrow，Donnation，Sell）。输入的数据将保存在用户选择的选项中。然后，数据将在表视图中的第二视图控制器中显示。如果用户选择Exchange选项并输入数据，则其数据将显示在交换的表视图中（索引0），这对我来说有效，数据以正确的形式显示在表视图中。

我遇到的问题是将数据传递给其他视图控制器时。 当用户单击任何单元格时，无论索引的差异如何，它都会传递相同的数据。如果用户选择借用（索引1）并单击任何单元格，则它将显示Exchange（索引0）数据。无论您选择什么索引，单击的单元格都会传递相同的数据！

第一个视图控制器

在这里我要输入数据

该细分市场的右索引中的表视图

我单击后，数据

如果我更改索引并单击任何单元格，请在此处查看此处，它将传递相同的数据！ ！

如果我更改索引并单击任何单元格，请查看此处，它将传递相同的数据！ ！

这是我的第一个VC的代码

import UIKit
import FirebaseFirestore

class ViewController4: UIViewController {
    @IBOutlet weak var mssglabel: UILabel!
    @IBOutlet weak var selectservice: UIButton!
    @IBOutlet weak var titleTextField: UITextField!
    @IBOutlet weak var descriptionTextField: UITextView!
    @IBOutlet weak var custombtun: UIButton!
    
   
    let db = Firestore.firestore()

    var chooseOption = ""

    override func viewDidLoad() {
        super.viewDidLoad()
       
        setpopupbutn()
        selectservice.layer.cornerRadius = 25
        descriptionTextField.layer.cornerRadius = 25
        custombtun.layer.cornerRadius = 25

    }
    
    @IBAction func containbutn(_ sender: Any) {

            let vc = (storyboard?.instantiateViewController(withIdentifier: "vc3"))!
            navigationController?.pushViewController(vc, animated: true)
           
        
        spcificOption()
      
    }
    

    
    func saveDataDonation() {
        
         if let description = descriptionTextField.text,
            let tittle = titleTextField.text{
            // Save Data to Database
            
            db.collection("userDonationDatabase")
                .addDocument(data: [
                    "description" : description,
                    "BookTitle": tittle ]) {
                    (error) in
                    if let err = error {
                        print(err.localizedDescription)
                    }else {
                        print("تم حفظ البيانات بنجاح")
                        print(description)
                        print(tittle)
                    }
                } // end of closure
            
        }

        
    }
    
    func saveDataSale() {
        
        if let description = descriptionTextField.text,
           let tittle = titleTextField.text{
            // Save Data to Database
            
            db.collection("userSaleDatabase")
                .addDocument(data: [
                    "description" : description,
                    "BookTitle": tittle ]) {
                    (error) in
                    if let err = error {
                        print(err.localizedDescription)
                    }else {
                        print("تم حفظ البيانات بنجاح")
                        print(description)
                        print(tittle) }
                }
        }
        
    }
    
    func saveDataExchange() {
        
        if let description = descriptionTextField.text,
           let tittle = titleTextField.text {
            // Save Data to Database
            
            db.collection("userExchangeDatabase")
                .addDocument(data: [
                    "description" : description,
                    "BookTitle": tittle ]) {
                    (error) in
                    if let err = error {
                        print(err.localizedDescription)
                    }else {
                        print("تم حفظ البيانات بنجاح")
                        print(description)
                        print(tittle) }
                }
        }
        
    }
    
    func saveDataBorrow() {
        
        if let description = descriptionTextField.text,
           let tittle = titleTextField.text {
            // Save Data to Database
            
            db.collection("userBorrowDatabase")
                .addDocument(data: [
                    "description" : description,
                    "BookTitle": tittle]) {
                    (error) in
                    if let err = error {
                        print(err.localizedDescription)
                    }else {
                        print("تم حفظ البيانات بنجاح")
                        print(description)
                        print(tittle) }
                }
        }
        
    }
    
    func setpopupbutn () {
       
        let option = {( ACTION : UIAction ) in
            self.chooseOption = ACTION.title
            print("حفظ الداتا في ",self.chooseOption)}
        selectservice.menu = UIMenu (children : [
            UIAction (title : "تبرع" , state: .on , handler: option),
            UIAction (title : "بيع" ,  handler: option),
            UIAction (title : "تبادل" ,  handler: option),
            UIAction (title : "إستعارة" ,  handler: option),
            
        ])

        
        saveDataDonation()
        selectservice.showsMenuAsPrimaryAction = true
        selectservice.changesSelectionAsPrimaryAction = true
        

    }

    func spcificOption() {
        if chooseOption == ("تبرع") {
            saveDataDonation()
        } else if chooseOption == ("بيع") {
            saveDataSale()
        } else if chooseOption == ("تبادل") {
            saveDataExchange()
        } else if chooseOption == ("إستعارة") {
            saveDataBorrow()
        }
    }

}

，这是第二个VC（表视图）

import UIKit
import FirebaseFirestore
import Firebase


class ViewController3: UIViewController, UITableViewDataSource, UITableViewDelegate {

    
    let db = Firestore.firestore()
    var exchange : [exchange] = []
    var borrow : [borrow] = []
    var donation : [donation] = []
    var sale : [sale] = []


    @IBOutlet weak var segmentOutlet: UISegmentedControl!
    @IBOutlet weak var userDataTableView: UITableView!
   
    override func viewDidLoad() {
        super.viewDidLoad()
  
        userDataTableView.dataSource = self
        userDataTableView.delegate = self
        getDataDonation()
        getDataSale()
        getDataExchange()
        getDataBorrow()
        userDataTableView.reloadData()

        
    }
    

    @IBAction func serviceSeg(_ sender: UISegmentedControl) {
       
       if sender.selectedSegmentIndex == 0 {
           getDataExchange()
          
        }
        
        else if sender.selectedSegmentIndex == 1 {
           
            getDataBorrow()
           
            
        }
        else if sender.selectedSegmentIndex == 2 {
           
            getDataDonation()
           
          
        }
        else if sender.selectedSegmentIndex == 3 {
            
            getDataSale()
            
           
        }
    }
    
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {



        if segmentOutlet.selectedSegmentIndex == 0 {
            return exchange.count
        } else if segmentOutlet.selectedSegmentIndex == 1 {
            return borrow.count
        }else if segmentOutlet.selectedSegmentIndex == 2 {
            return donation.count
        } else if segmentOutlet.selectedSegmentIndex == 3 {
       return sale.count
   }
       return 0
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        if segmentOutlet.selectedSegmentIndex == 0 {
            cell.textLabel?.text = exchange [indexPath.row].passTitle
        } else if segmentOutlet.selectedSegmentIndex == 1 {
            cell.textLabel?.text = borrow [indexPath.row].passTitle
        } else if segmentOutlet.selectedSegmentIndex == 2 {
            cell.textLabel?.text = donation [indexPath.row].passTitle
        } else if segmentOutlet.selectedSegmentIndex == 3 {
            cell.textLabel?.text = sale [indexPath.row].passTitle
        }
        return cell
    }
    
    func getDataDonation(){
        donation.removeAll()
        db.collection("userDonationDatabase")
            .getDocuments { querySnapshot, error in
                if let err = error { print(err.localizedDescription)}
                else {
                    for document in querySnapshot!.documents {
                        let data = document.data()
                        print( data["BookTitle"] as! String )
                        self.donation.append(finalProject.donation(passTitle3:data["BookTitle"] as! String , passDes3: data["description"] as! String))

                    }
                    DispatchQueue.main.async {
                        self.userDataTableView.reloadData()
                    }
                }
            }
    }
   
    func getDataSale(){
        sale.removeAll()
        db.collection("userSaleDatabase")
            .getDocuments { querySnapshot, error in
                if let err = error { print(err.localizedDescription)}
                else {
                    for document in querySnapshot!.documents {
                        let data = document.data()
                        print( data["BookTitle"] as! String )
                        self.sale.append(finalProject.sale(passTitle4:data["BookTitle"] as! String , passDes4: data["description"] as! String))

                        
                    }
                   
                    DispatchQueue.main.async {
                        self.userDataTableView.reloadData()
                    }
                }
            }
    }
    
    func getDataExchange(){
        exchange.removeAll()
        db.collection("userExchangeDatabase")
            .getDocuments { querySnapshot, error in
                if let err = error { print(err.localizedDescription)}
                else {
                    for document in querySnapshot!.documents {
                        let data = document.data()
                        print( data["BookTitle"] as! String )
                        self.exchange.append(finalProject.exchange(passTitle1:data["BookTitle"] as! String , passDes1: data["description"] as! String))
                        

                    }
        
                    DispatchQueue.main.async {
                        self.userDataTableView.reloadData()
                    }
                }
            }
    }
    
    func getDataBorrow(){
        borrow.removeAll()
        db.collection("userBorrowDatabase")
            .getDocuments { querySnapshot, error in
                if let err = error { print(err.localizedDescription)}
                else {
                    for document in querySnapshot!.documents {
                        let data = document.data()
                        print( data["BookTitle"] as! String )
                        self.borrow.append(finalProject.borrow(passTitle2:data["BookTitle"] as! String , passDes2: data["description"] as! String))

                    }
                   
                    DispatchQueue.main.async {
                        self.userDataTableView.reloadData()
                    }
                }
            }
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        if let vc = storyboard?.instantiateViewController(withIdentifier:"vc10") as? ViewController10 {
            vc.recivedE = exchange[indexPath.row]
            self.navigationController?.pushViewController(vc, animated: true)
        }
    }
    
    
}

注释...我尝试这样做，但它不起作用，

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

        if let vc = storyboard?.instantiateViewController(withIdentifier:"vc10") as? ViewController10 {
            vc.recivedE = exchange[indexPath.row]
            vc.recivedB = borrow[indexPath.row]
            vc.recivedD = donation[indexPath.row]
            vc.recivedS = sale[indexPath.row]
            self.navigationController?.pushViewController(vc, animated: true)
        }
    }

这是结构， 我为每个索引创建了一个结构

public struct exchange {
      var passTitle : String
      var passDes : String
      init (passTitle1:String, passDes1:String) {
          self.passTitle = passTitle1
          self.passDes = passDes1
      }
}
public struct borrow {
      var passTitle : String
      var passDes : String
      init (passTitle2:String, passDes2:String) {
          self.passTitle = passTitle2
          self.passDes = passDes2
      }
}
public struct donation {
      var passTitle : String
      var passDes : String
      init (passTitle3:String, passDes3:String) {
          self.passTitle = passTitle3
          self.passDes = passDes3
      }
}

public struct sale {
      var passTitle : String
      var passDes : String
      init (passTitle4:String, passDes4:String) {
          self.passTitle = passTitle4
          self.passDes = passDes4
      }
}

，这是最后一张VC

import UIKit
import FirebaseStorage
import Firebase
import FirebaseFirestore
import SDWebImage

class ViewController10: UIViewController {
   
    @IBOutlet weak var userBookTitle: UILabel!
    @IBOutlet weak var userBookDescription: UILabel!
    
    var recivedE:exchange?
    var recivedB:borrow?
    var recivedD:donation?
    var recivedS:sale?
    


    override func viewDidLoad() {
        super.viewDidLoad()
 

     
        userBookTitle.text = recivedE?.passTitle
        userBookDescription.text = recivedE?.passDes

    }
    

}

注意...我试图这样做，但它不起作用

    override func viewDidLoad() {
        super.viewDidLoad()

        if let et = recivedE?.passTitle ,
        let ed = recivedE?.passDes{
            userBookTitle.text = et
            userBookDescription.text = ed
        }
        else if let bt = recivedB?.passTitle ,
          let  bd = recivedB?.passDes {
                userBookTitle.text = bt
                userBookDescription.text = bd

            }
        else if let dt = recivedD?.passTitle ,
            let dd = recivedD?.passDes {
                userBookTitle.text = dt
                userBookDescription.text = dd
            }
            else if let st = recivedS?.passTitle ,
                let sd = recivedS?.passDes {
                    userBookTitle.text = st
                    userBookDescription.text = sd
                }
        


    }

，这也无法

    override func viewDidLoad() {
        super.viewDidLoad()

        userBookTitle.text = recivedE?.passTitle
        userBookDescription.text = recivedE?.passDes
        userBookTitle.text = recivedB?.passTitle
        userBookDescription.text = recivedB?.passDes
        userBookTitle.text = recivedD?.passTitle
        userBookDescription.text = recivedD?.passDes
        userBookTitle.text = recivedS?.passTitle
        userBookDescription.text = recivedS?.passDes
    }

帮助我，请

Answer 1

在您的两个numberFrowsInsection和cellforrowat函数中，您正在检查所选的段索引以确定要使用的数据：

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if segmentOutlet.selectedSegmentIndex == 0 {
        return exchange.count
    } else if segmentOutlet.selectedSegmentIndex == 1 {
        return borrow.count
    }else if segmentOutlet.selectedSegmentIndex == 2 {
        return donation.count
    } else if segmentOutlet.selectedSegmentIndex == 3 {
        return sale.count
    }
    return 0
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
    if segmentOutlet.selectedSegmentIndex == 0 {
        cell.textLabel?.text = exchange [indexPath.row].passTitle
    } else if segmentOutlet.selectedSegmentIndex == 1 {
        cell.textLabel?.text = borrow [indexPath.row].passTitle
    } else if segmentOutlet.selectedSegmentIndex == 2 {
        cell.textLabel?.text = donation [indexPath.row].passTitle
    } else if segmentOutlet.selectedSegmentIndex == 3 {
        cell.textLabel?.text = sale [indexPath.row].passTitle
    }
    return cell
}

但是，在didselectRowat中，您 仅 使用Exchange data：

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

    if let vc = storyboard?.instantiateViewController(withIdentifier:"vc10") as? ViewController10 {
        vc.recivedE = exchange[indexPath.row]
        self.navigationController?.pushViewController(vc, animated: true)
    }
}

如果您在didsectrowat中实现相同的If结构/代码>您应该获得所需的结果。