从用户输入刷新UIPicker

// 监听用户输入的文本框
let inputTextField = UITextField(frame: CGRect(x: 0, y: 0, width: 200, height: 40))
inputTextField.addTarget(self, action: #selector(handleUserInput), for: .editingChanged)

// UIPicker控件
let pickerView = UIPickerView()
pickerView.dataSource = self
pickerView.delegate = self

// 数据源数组
var pickerData = ["Option 1", "Option 2", "Option 3"]

// 处理用户输入的方法
@objc func handleUserInput() {
    if let userInput = inputTextField.text {
        // 解析用户输入，更新数据源
        pickerData.append(userInput)
        
        // 刷新UIPicker
        pickerView.reloadAllComponents()
    }
}

// UIPickerViewDataSource和UIPickerViewDelegate方法的实现
extension ViewController: UIPickerViewDataSource, UIPickerViewDelegate {
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return pickerData.count
    }
    
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return pickerData[row]
    }
}