UIPickerView 弹出窗口

Posted 2023-02-24

【中文标题】UIPickerView 弹出窗口

【英文标题】：UIPickerView Pop-Up

【发布时间】：2016-03-24 03:55:52

【问题描述】：

我生成的代码有什么问题？我试图在点击文本字段时弹出UIPickerView，然后在进行选择后消失。文本字段应该显示之后选择的内容。

import UIKit

class CreateAJob_View_ControllerViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate 
    @IBOutlet var pickerTextField: UITextField!
    @IBOutlet var picker: UIPickerView!

    var pickerData:[String] = [String]()

    override func viewDidLoad() 
        super.viewDidLoad()
        picker.hidden = true;
        pickerTextField.text = "A4";

        self.pickerTextField.delegate = self
        self.picker.delegate = self
        self.picker.dataSource = self

         pickerData = ["A0","A1","A2","A3","A4","A5","A6","A7","A8","A9","A10"]
    

    override func didReceiveMemoryWarning() 
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    

    func numberOfComponentsInPickerView(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]
    

    func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) 
        pickerTextField.text = pickerData[row];
        picker.hidden = true;
    

    func textFieldShouldBeginEditing(textField: UITextField) -> Bool 
        pickerTextField.hidden = false
        return false
    

【参考方案1】：

你需要这样改变这两个方法：

func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) 
    self.pickerTextField.hidden = false;
    self.picker.hidden = true;
    self.pickerTextField.text = pickerData[row];


func textFieldShouldBeginEditing(textField: UITextField) -> Bool 
    self.pickerTextField.hidden = true
    self.picker.hidden = false;
    return false

【讨论】：

不客气。如果有效，请接受答案。