Table View Swift Xcode

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Table View Swift Xcode

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#1 by (1 votes)

1

I am new programming for iOS so I do not know how to solve this problem, I have a view where I have 2 tableview one where you select which chat you want to open and the other table is where the messages are displayed. Now I have 3 problems

At the time of selecting the chat my messages are not automatically shown (Refresh) if not until selecting the tableview chat

When sending a message does not show the gray balloon and the same try to refresh it and even then it only deletes me the messages

That every time a message is sent or shows you the chat the last message is displayed

This is my Table View code

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
     var cell:UITableViewCell?
    if tableView == self.tableView2 {
            let tu = ((identificador[indexPath.row])as NSString).integerValue
            if tu == 2{
                    let cell = tableView.dequeueReusableCell(withIdentifier: "Messages",  for: indexPath) as! ChatTableViewCell
                    cell.emisor.isHidden = true
                    cell.receptortxt.text = self.chats[indexPath.row]
                    return cell
            }
            else if tu == 1{
                    let cell = tableView.dequeueReusableCell(withIdentifier: "Messages",  for: indexPath) as! ChatTableViewCell
                    cell.receptor.isHidden = true
                    cell.emisortxt.text = self.chats[indexPath.row]
                    return cell
            }
    }
    if tableView == self.tableView {
            cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
            cell?.textLabel?.text=separated[indexPath.row]
    }
    return cell!
}

This is the code when you select chat

 func peticionhttp()
{
   /// Codigo que manda a traer cual chat
             self.refresh()
             self.boton.setTitle("\(self.separated[0])", for: .normal)
             }
        }
        task.resume()
}
func refresh(){
    print("refreshed" , tu2)
    self.tableView2.reloadData()
    self.tableView2.separatorStyle = .none
}

Code when sending message

@IBAction func onClicEnviar(_ sender: Any) {
   // dismissKeyboard()
    peticionhttpcuatro()

    refresher = UIRefreshControl()
    refresher.attributedTitle = NSAttributedString(string: "Pulsa para refrescar")
    refresher.addTarget(self, action: #selector(ChatIndividual.refrescar), for: UIControlEvents.valueChanged)

    tableView2.addSubview(refresher)
}


 @objc func refrescar () {
    chats.append(textfield.text!)
    identificador += ["1"]

    tableView2.reloadData()
    refresher.endRefreshing()
    print(chats,identificador,"Heeeeeeeeeeeeeeeeeeey ")
}

P.d: I'm not using Firebase

ios swift xcode

asked by Milan 05.06.2018 в 19:27

source

1 answer

Can you create 1 Visual Basi C # and 1 Web Form in ASP.NET? Send values from a Fragment to an Adapter

score 1 · Accepted Answer

Try to call your function self.refresh in the main thread since all the operations that try to modify UI must execute in this thread. 1 -

DispatchQueue.main.async { 
  self.refresh()
}

2- In this case all your messages must be in an arrangement, when you send the message insert that message in your directory and in the table:

tableView.beginUpdates()
tableView.insertRows(at: <#T##[IndexPath]#>, with: <#T##UITableViewRowAnimation#>)
 tableView.endUpdates()

Example:

import UIKit

class ChatCell: UITableViewCell { @IBOutlet weak var senderMessage: UILabel! @IBOutlet weak var receiverMessage: UILabel!

static let idenfitier: String = String(describing: ChatCell.self)

var message: Message?{
    didSet{
        if let unwrappedMessage = message{
            if unwrappedMessage.sender == 1{
                senderMessage.text = unwrappedMessage.message
                receiverMessage.text = ""
            }else{
                receiverMessage.text = unwrappedMessage.message
                senderMessage.text = ""
            }
        }
    }
}
}

struct Message {
    var message: String?
    var sender: Int?
//    2 = receptor, 1 = emisor
}

class ChatViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

@IBOutlet weak var chatView: UITableView!
@IBOutlet weak var messageTextField: UITextField!

var messages = [Message(message: "Hola", sender: 2), Message(message: "Hola, ¿Comó estas?", sender: 1)]


override func viewDidLoad() {
    super.viewDidLoad()
    chatView.delegate = self
    chatView.dataSource = self
    chatView.estimatedRowHeight = 80
    chatView.keyboardDismissMode = .onDrag
    chatView.separatorStyle = .none
}

func numberOfSections(in tableView: UITableView) -> Int {
    return 1
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return messages.count
}


func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: ChatCell.idenfitier) as! ChatCell

    cell.message = messages[indexPath.item]

    return cell
}

@IBAction func sendMessage(_ sender: UIButton){
    if let text = messageTextField.text{
        let newMessage = Message(message: text, sender: 1)
        messages.append(newMessage)
        chatView.reloadData()
    }
}
}