Ios “中的多个列”；UIPickerView“；

在我的项目中添加了天和月 如何在（日期和时间）UIPickerView中添加两个字段。 在我的代码中是

class TableViewController: UITableViewController ,UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource{
    @available(iOS 2.0, *)
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
@IBOutlet var dateTextfield:UITextField!
    @IBOutlet var dateLabel:UILabel!
 var pickerDaysYear = [["1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"],["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]];

override func viewDidLoad() {
        super.viewDidLoad()
self.pickerview.delegate = self

}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
        return 2
    }
    numberOfRowsInComponent component: Int) -> Int {
           return self.pickerDaysYear[component].count
    }
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if(component == 0)
        {
            return self.pickerDaysYear[component][row]
        }
        else
        {
            return self.pickerDaysYear[component][row]
        }
        
//        return pickerDaysYear[component][row]
    }
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        let days =  pickerDaysYear[0][pickerView.selectedRow(inComponent: 0)]
        let month = pickerDaysYear[1][pickerView.selectedRow(inComponent: 1)]
        dateTextfield.text = days + " " + month
    }
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        view.endEditing(false)
    }

类TableViewController:UITableViewController、UIExtFieldDelegate、UIPickerViewDeleteGate、UIPickerViewDataSource{
@可用（iOS 2.0，*）
func numberOfComponents（在pickerView:UIPickerView中）->Int{
返回1
}
@IBOutlet var dateTextfield:UITextField！
@IBVAR日期标签：UILabel！
var pickerDaysYear=[“1”，“2”，“3”，“4”，“5”，“6”，“7”，“8”，“9”，“10”，“11”，“12”，“13”，“14”，“15”，“16”，“17”，“18”，“19”，“20”，“21”，“22”，“23”，“24”，“25”，“26”，“27”，“28”，“29”，“30”，“31”，“1月”，“2月”，“3月”，“4月”，“5月”，“6月”，“7月”，“8月”，“9月”，“10月”，“11月”，“12月]；
重写func viewDidLoad（）{
super.viewDidLoad（）
self.pickerview.delegate=self
}
func numberOfComponentsInPickerView（pickerView:UIPickerView）->Int{
返回2
}
numberOfRowsInComponent组件：Int）->Int{
返回self.pickerDaysYear[component].count
}
func pickerView（pickerView:UIPickerView，titleForRow行：Int，forComponent组件：Int）->String{
如果（组件==0）
{
返回self.pickerDaysYear[组件][行]
}
其他的
{
返回self.pickerDaysYear[组件][行]
}
//返回选择器日期EAR[组件][行]
}
func pickerView（pickerView:UIPickerView，didSelectRow行：Int，不完整组件：Int）{
let days=pickerdaysear[0][pickerView.selectedRow（不完整：0）]
let month=pickerDaysYear[1][pickerView.selectedRow（不完整项：1）]
dateTextfield.text=天+月
}
覆盖函数touchesend（touchs:Set，带有事件：UIEvent？）{
视图。重新编辑（false）
}

输出为：

[图像丢失]

我期望得到这样的结果：

---

函数

numberOfComponents

和

numberOfRowsInComponent

来自数据源，而不是委托

因此，您需要将此行添加到您的

viewDidLoad

：

self.pickerview.delegate=self

class TableViewController: UITableViewController ,UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource{

@IBOutlet var dateTextfield:UITextField!
    @IBOutlet var dateLabel:UILabel!
    let datePicker = UIPickerView()
override func viewDidLoad() {
        super.viewDidLoad()
        self.dateTextfield.delegate = self

        self.datePicker.dataSource = self
        self.datePicker.delegate = self

        self.dateTextfield.inputView = self.datePicker

        let toolBar = UIToolbar()
        toolBar.barStyle = UIBarStyle.default
        toolBar.isTranslucent = true
        toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)
        toolBar.sizeToFit()
        let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.plain, target: self, action: #selector(self.doneButtonTapped))
        toolBar.setItems([doneButton], animated: false)
        self.dateTextfield.inputAccessoryView = toolBar
}
func doneButtonTapped(){
        self.dateTextfield.resignFirstResponder()
    }
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        view.endEditing(true)
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

//----------------   PickerView  delegate Method   --------------------------------//

    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 2
    }
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return self.pickerDaysmonth[component].count
    }
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return self.pickerDaysmonth[component][row]
    }
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

        let days =  pickerDaysmonth[0][pickerView.selectedRow(inComponent: 0)]
        let month = pickerDaysmonth[1][pickerView.selectedRow(inComponent: 1)]
        dateTextfield.text =   days + " " + month

    }

为工具栏中的文本字段指定inputAccessoryView

let toolBar = UIToolbar()
    self.dateTextfield.inputAccessoryView = toolBar

很好用

当前输出为：

---

以防有人在协议调用中查找组件的OBJC调用

• 对于行数，请使用

   return [yourArrayName[component] count];
  

• 用于行使用的标题

   return yourArrayName[component][row];
  

---

当前输出是什么？它只显示一个字段（月），但我预期的输出在PickerViewer中添加了两个字段（天和月）。您可以添加当前状态的图像吗？很高兴您有一个答案-但要了解您的问题和您的问题，然后了解答案，很高兴看到图像当前输出为：“@RamprasathS如果解决了您的问题，请将其标记为正确，或者如果出现其他问题，请通知我。谢谢

 return yourArrayName[component][row];