Pickerview-多种教科书输入的有效方法

Question

所以我的第一个实际代码进展缓慢。我的目标是创建一个具有40行输入的应用程序，每行两个文本框用于输入，每行一个标签用于输出。我希望每个文本框输入都有一个选择器来选择输入。每行都是相同的，即，一个文本框用于“商店”，一个文本框用于数量，一个标签用于重量。希望所附图片能更好地理解界面样式。

因为它是40行，每行有2个文本框，所以输入很多。我对专家的提问有两个方面。首先，下面显示的代码可以正常工作。它适用于第一行，但无法弄清楚如何使用选择器将数据输入到第二行，依此类推。

第二，您可以从我的代码中看到我正在将每条输入行分别添加到代码中。有更有效的方法吗？

App Interface Picture

class SecondViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {

    // Outlets for LHS Cabin Floor Shoring LINE ONE
    @IBOutlet weak var fwdLHSCabinFloorShoringOne: UITextField!
    @IBOutlet weak var fwdLHSCabinFloorShoringOneQty: UITextField!
    @IBOutlet weak var fwdLHSCabinFloorShoringOneWeight: UILabel!

    // Outlets for LHS Cabin Floor Shoring LINE TWO
    @IBOutlet weak var fwdLHSCabinFloorShoringTwo: UITextField!
    @IBOutlet weak var fwdLHSCabinFloorShoringTwoQty: UITextField!
    @IBOutlet weak var fwdLHSCabinFloorShoringTwoWeight: UILabel!

    // Pickerview Menu list for Stores and Quantity
    let storesQty = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20"]

    let storesList = ["SLDMB", "Switlik Liferaft", "Mass Casualty Liferaft"]

    var pickerViewStoresList = UIPickerView()
    var pickerViewQuantity = UIPickerView()

    // Stores weights
    var stores = [
        "SLDMB":26,
        "Switlik Liferaft":119,
        "Mass Casualty Liferaft":110,
        ]

    var currentTextField: UITextField?

    override func viewDidLoad() {
        super.viewDidLoad()

        pickerViewStoresList.delegate = self
        pickerViewStoresList.dataSource = self
        pickerViewQuantity.delegate = self
        pickerViewStoresList.dataSource = self

        // Textbox setup for pickerview
        // FWD LHS Cabin Floor Shoring LINE 1

        fwdLHSCabinFloorShoringOne.inputView = pickerViewStoresList
        fwdLHSCabinFloorShoringOne.textAlignment = .center
        fwdLHSCabinFloorShoringOne.placeholder = "Select SAR Store"

        fwdLHSCabinFloorShoringOneQty.inputView = pickerViewQuantity
        fwdLHSCabinFloorShoringOneQty.textAlignment = .center
        fwdLHSCabinFloorShoringOneQty.placeholder = "Q"

        // FWD LHS Cabin Floor Shoring LINE 2

        fwdLHSCabinFloorShoringTwo.inputView = pickerViewStoresList
        fwdLHSCabinFloorShoringTwo.textAlignment = .center
        fwdLHSCabinFloorShoringTwo.placeholder = "Select SAR Store"

        fwdLHSCabinFloorShoringTwoQty.inputView = pickerViewQuantity
        fwdLHSCabinFloorShoringTwoQty.textAlignment = .center
        fwdLHSCabinFloorShoringTwoQty.placeholder = "Q"

    }
    // Picker Functions
    public func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }

    public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if pickerView == pickerViewStoresList {
            return storesList.count
        } else {
            return storesQty.count
        }
    }

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if pickerView == pickerViewStoresList {
            return storesList[row]
        } else {
            return storesQty[row]
        }
    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        if pickerView == pickerViewStoresList {
        fwdLHSCabinFloorShoringOne.text = storesList[row]
        fwdLHSCabinFloorShoringOne.resignFirstResponder()
        } else {
            fwdLHSCabinFloorShoringOneQty.text = storesQty[row]
            fwdLHSCabinFloorShoringOneQty.resignFirstResponder()
    }
}
    // Calculate and display Line Weight
    @IBAction func textChanged(_ sender: Any) {

        //Weight for LHS Cabin Floor Shoring Line 1

        let fwdLHSCabinFloorShoringOneSelectedStoreWeight = stores[fwdLHSCabinFloorShoringOne.text!]
        let fwdLHSCabinFloorShoringOneQtyValue = Int(fwdLHSCabinFloorShoringOneQty.text!)
        fwdLHSCabinFloorShoringOneWeight.text = String(describing:
            fwdLHSCabinFloorShoringOneSelectedStoreWeight! * (fwdLHSCabinFloorShoringOneQtyValue ?? 0))

        //Weight for LHS Cabin Floor Shoring Line 2

        let fwdLHSCabinFloorShoringTwoSelectedStoreWeight = stores[fwdLHSCabinFloorShoringTwo.text!]
        let fwdLHSCabinFloorShoringTwoQtyValue = Int(fwdLHSCabinFloorShoringTwoQty.text!)
        fwdLHSCabinFloorShoringTwoWeight.text = String(describing:
            (fwdLHSCabinFloorShoringTwoSelectedStoreWeight ?? 0) * (fwdLHSCabinFloorShoringTwoQtyValue ?? 0))
}

}