从tableView中获取所有textField值到Array和Validation中

Question

我有两个具有类似单元格设计的tableView。单元格名称和年龄里面有两个textField。您可以在图像中看到。

现在用户将数据填充到每个textField中。然后在continue按钮上，我想在数组上附加所有名称。年龄相似。

并且还想将验证值作为空白值。如果任何文本字段为空白，请按Continue按钮，弹出警报。

Answer 1

您可以使用方法cellForRow(at:)获取表格视图的单元格，然后按如下所示相应地访问名称标签或年龄标签

let indexPath = IndexPath(row: 0, section: 0)
if let cell = yourTableView.cellForRow(at: indexPath) as? yourTableViewCell {
    let name = cell.nameLabel.text
    ...
}

Answer 2

需要在UITextFieldDelegate中实现ViewController并实现TextFieldEndEditing方法，然后将编辑后的文本字段文本保存在字符串数组中。

请参考以下链接以获取所有文本字段值。

https://phrkrish.wordpress.com/2016/12/25/table-view-with-text-field-in-swift-3-0/

Answer 3

不是使用两个表视图，而是将一个表视图包含两个部分。并且不要使用dequeueReusableCell。创建两个UITableViewCell对象数组。并通过继续按钮操作从数组对象中获取文本字段值。

// CustomCell.swift

class CustomCell: UITableViewCell {
    let titleLbl = UILabel()
    let seatNoLbl = UILabel()
    let nameTxtField = UITextField()
    let ageTxtField = UITextField()
    //etc
}

// ViewController.swift

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    let tableView = UITableView()
    var onwardSeatNos = ["L1","L15"]
    var returnSeatNos = ["L2","L3"]
    var onwardSeatCells = [CustomCell]()
    var returnSeatCells = [CustomCell]()
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white

        onwardSeatNos.enumerated().forEach { (index,seatNo) in
            let cell = CustomCell()
            print(index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index))
            cell.titleLbl.text = index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index)
            cell.seatNoLbl.text = "Seat No. \(seatNo)"
            onwardSeatCells.append(cell)
        }
        returnSeatNos.enumerated().forEach { (index,seatNo) in
            let cell = CustomCell()
            cell.titleLbl.text = index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index)
            cell.seatNoLbl.text = "Seat No. \(seatNo)"
            returnSeatCells.append(cell)
        }
    }
    func numberOfSections(in tableView: UITableView) -> Int {
        return returnSeatNos.isEmpty ? 1 : 2
    }
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        if section == 0 {
            return onwardSeatNos.count
        } else {
            return returnSeatNos.count
        }
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        if indexPath.section == 0 {
            return onwardSeatCells[indexPath.row]
        } else {
            return returnSeatCells[indexPath.row]
        }
    }
    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        if section == 0 {
            return "Passenger Information (Onward)"
        } else {
            return "Passenger Information (Return)"
        }
    }
    @objc func confirmBtnAction(_ sender: UIButton) {
        if let index = onwardSeatCells.firstIndex(where: { $0.nameTxtField.text!.isEmpty }) {
            print("Onward " + (index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index)) + " name is empty")
        } else if let index = onwardSeatCells.firstIndex(where: { $0.nameTxtField.text!.isEmpty }) {
            print("Onward " + (index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index)) + " age is empty")
        } else if let index = returnSeatCells.firstIndex(where: { $0.nameTxtField.text!.isEmpty }) {
            print("Return " + (index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index)) + " name is empty")
        } else if let index = returnSeatCells.firstIndex(where: { $0.nameTxtField.text!.isEmpty }) {
            print("Return " + (index == 0 ? "Primary Passenger" : String(format: "Co-passenger %02d", index)) + " age is empty")
        } else {
            let onwardNamesArr = onwardSeatCells.map { $0.nameTxtField.text! }
            let onwardAgesArr = onwardSeatCells.map { $0.ageTxtField.text! }
            let returnNamesArr = returnSeatCells.map { $0.nameTxtField.text! }
            let returnAgesArr = returnSeatCells.map { $0.ageTxtField.text! }
        }
    }
}