Ios 2个文本字段，1个UIView中有2个选择器

我在1iView中创建了一个包含2个选择器的2文本字段，但我无法在右文本字段中显示正确的选择器，因为我不知道如何识别当前活动视图。 我尝试使用标记（但只使用选择器，不使用textfield），并创建var current=UITextField（）

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作为一个想法的人

首先在

viewDidLoad

GenderTextField.delegate = self
WitchSportTextField.delegate = self

将此扩展名用于已识别的TextField处于活动状态

extension YourClass: UITextFieldDelegate {
    func textFieldDidBeginEditing(_ textField: UITextField) {
         currentTextField = textField
         picker.reloadAllComponents() //Reload for accurate data
    }
}

注意：变量名称应以小写字母开头。使用描述性名称阐明您的意图：

---

看看这个：

这是完整的代码

var genre = ["-","Homme","Femme"]
var Sport = ["-","Tennis"]
var genrepicker = UIPickerView()
var Sportpicker = UIPickerView()
var genretTextField = UITextField()
var SportTextField = UITextField()

override func viewDidLoad() {
        super.viewDidLoad()

    genrepicker.delegate = self
    genrepicker.dataSource = self

    Sportpicker.delegate = self
    Sportpicker.dataSource = self
    genretTextField.inputView = genrepicker
    SportTextField.inputView = Sportpicker

func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if pickerView == genrepicker{
        return genre.count
        }else{
            return Sport.count
        }
    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        if pickerView == genrepicker {
            GenderTextField.text = genre[row]
        }else{
            WitchSportTextField.text = Sport[row]
        }
    }
   func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if pickerView == genrepicker{
        return genre[row]
         }else{
            return Sport[row]
        }
    }

---

使用TextField委托。

extension YourClass: UITextFieldDelegate {
    func textFieldDidBeginEditing(_ textField: UITextField) {
         currentTextField = textField
         picker.reloadAllComponents() //Reload for accurate data
    }
}

var genre = ["-","Homme","Femme"]
var Sport = ["-","Tennis"]
var genrepicker = UIPickerView()
var Sportpicker = UIPickerView()
var genretTextField = UITextField()
var SportTextField = UITextField()

override func viewDidLoad() {
        super.viewDidLoad()

    genrepicker.delegate = self
    genrepicker.dataSource = self

    Sportpicker.delegate = self
    Sportpicker.dataSource = self
    genretTextField.inputView = genrepicker
    SportTextField.inputView = Sportpicker

func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if pickerView == genrepicker{
        return genre.count
        }else{
            return Sport.count
        }
    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        if pickerView == genrepicker {
            GenderTextField.text = genre[row]
        }else{
            WitchSportTextField.text = Sport[row]
        }
    }
   func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if pickerView == genrepicker{
        return genre[row]
         }else{
            return Sport[row]
        }
    }