Swift UITextField text clears with button action in TableViewCell

问题

I have recorded my screen and here is the link to it. Going into details

I have a tableView section, in which there is a tableviewcell (PhoneCell) with two textfields (one is a pickerview input and other a textfield), and an Add Button.
When Add button is tapped, I am appending an empty phone to the array of phones (reusing the same PhoneCell) and calling tableView.reloadData() method.

The Problem :(
Whenever I tap on Add button, the textFields text that I enter is cleared. I would like to retain it and ultimately should be able to save data (number of phones the user entered) when I click Save_Button

Add Phone Button action code:

func addUserPhone(userData: MyUserData) {
        self.user = userData

        var emptyPhoneDict:[String:String] = ["country":"", "number":""]

        if (user.phones?.count < 4) {
            var emptyPhone : MyUserPhoneNumber = MyUserPhoneNumber(dictionary: emptyPhoneDict)!
            emptyPhone.country = ""
            emptyPhone.number = ""
            user.phones?.append(emptyPhone)
        }
    }

In my PhoneCell.swift class, I have the below method that is taking care of data and indexPath values

override func configure(withUser user: MyUserData, language: String, indexPath: NSIndexPath) {
        super.configure(withUser: user, language: language, indexPath: indexPath)

        configureCountryCodePicker()
        fetchCountryTeleCodeList()

        userInfo = user

        self.countryCode.borderStyle = .RoundedRect
        self.teleNumber.borderStyle = .RoundedRect

        if user.phones?.count == 0 {
            self.countryCode.text = ""
            self.teleNumber.text = ""
        }

        else {
            if let userPhoneInfo = user.phones {

                self.countryCode.text = userPhoneInfo[indexPath.row].country
                self.teleNumber.text = userPhoneInfo[indexPath.row].number

            }
        }
    }

EDIT (ADDED cellForRowAtIndexPath)

public override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

        guard let section = Section(rawValue: indexPath.section) else {
            print("❌ Invalid section index.")
            return UITableViewCell()
        }

        let expanded = expandedCellPaths.contains(indexPath)

        var cell: ProfileCell?

        switch section {       

        case .ContactPhones:
            if contactCellExpanded == true {
                cell = tableView.dequeueReusableCellWithIdentifier("PhoneCell") as? PhoneCell
                (cell as? PhoneCell)?.dataSource = self

                if user.phones?.count == 4 {
                    (cell as! PhoneCell).addPhoneButton.hidden = true
                }
                else {
                    (cell as! PhoneCell).addPhoneButton.hidden = false
                }

            }
        case .ContactEmail:
            if contactCellExpanded == true {
                cell = tableView.dequeueReusableCellWithIdentifier("EmailCell") as? EmailCell
            }

        default:
            break
        }

        cell?.configure(withUser: user, language: languageCode, indexPath: indexPath)
        cell?.delegate = self

        return cell ?? UITableViewCell()

    }

EDIT 2 (added addPhoneButtonAction)

@IBAction func addPhoneButtonAction(sender: AnyObject) {
        self.dataSource?.addUserPhone(userInfo!)
    }

Where dataSource is variable of type PhoneCellDataSource protocol

protocol PhoneCellDataSource : class {

    func fetchCountryTeleCodeList(completion:((XtraResult<NSArray, XtraError>) -> Void))
    func addUserPhone(userData: MyUserData)

}

I can share more inputs/code as required. Please help. Thanks in Advance!

回答1:

I am going to answer my own question ;-)

TextFeilds are only boxes that accommodate some data (text). And since I was reusing the Phonecell each time I add a new row, the text I entered gets erased. This is because it is not "stored/saved" in the user object.

So in my addPhoneButtonAction method, I added this -

@IBAction func addPhoneButtonAction(sender: AnyObject) {
        userInfo?.phones![myIndexPath!.row].country = countryCode.text!
        userInfo?.phones![myIndexPath!.row].number = teleNumber.text!

        self.dataSource?.addUserPhone(userInfo!)
    }

Where myIndexPath is the indexPath of the row :-)

The working sample is here

来源：https://stackoverflow.com/questions/41394099/swift-uitextfield-text-clears-with-button-action-in-tableviewcell

标签

ios

swift

uitableview

tableviewcell