在UIPickerView和UIDatePicker中为Swift选择第一行或带有完成按钮的任何行

Question

我有一个带有4个UITextFields的ViewController。 前三个由自己的UIPickerView填充，第四个由UIDatePicker填充。

我希望完成按钮能够选择每个选择器的第一行，或者选择不是第一行的任何行。

以下是适用于第一个UIPicker的代码。 从选择UIPickerView问题的第一行得到了它。

func doneButton(sender: AnyObject) {
    let row = pickerView1.selectedRow(inComponent: 0);
    pickerView(pickerView1, didSelectRow: row, inComponent:0)
    view.endEditing(true)
}

如何启用“完成”按钮以针对所有4个选择器独立工作？

这是完整的代码。

任何帮助，不胜感激。

var selectedItemsArray = [String]()

class RunInputViewController: UIViewController, UITextFieldDelegate, UIPickerViewDataSource, UIPickerViewDelegate{

var pickerView1 = UIPickerView()
var pickerView2 = UIPickerView()
var pickerView3 = UIPickerView()
var pickerView4 = UIDatePicker()

@IBOutlet weak var runTypeTextField: UITextField!
@IBOutlet var runTextField: UITextField!
@IBOutlet var snowTypeTextField: UITextField!
@IBOutlet var dateTextField: UITextField!


@IBAction func saveRun(_ sender: Any){
    if (runTypeTextField.text != ""){
    runFeedList.append(runTypeTextField.text!)
        runTypeTextField.text = ""
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    createToolbar()

    pickerView1 = UIPickerView()
    pickerView2 = UIPickerView()
    pickerView3 = UIPickerView()
    pickerView4 = UIDatePicker()

    pickerView1.delegate = self
    pickerView1.dataSource = self

    pickerView2.delegate = self
    pickerView2.dataSource = self

    pickerView3.delegate = self
    pickerView3.dataSource = self


    pickerView1.tag = 0
    pickerView2.tag = 1
    pickerView3.tag = 2
    pickerView4.tag = 3

    self.runTypeTextField.inputView = self.pickerView1;
    self.runTextField.inputView = self.pickerView2;
    self.snowTypeTextField.inputView = self.pickerView3;
    self.dateTextField.inputView = self.pickerView4;

    pickerView4.addTarget(self, action: #selector(datePickerValueChanged(sender:)), for: .valueChanged)

    pickerView4.datePickerMode = UIDatePickerMode.time
    //let currentDate = NSDate()
    //pickerView4.minimumDate = currentDate as Date
    //pickerView4.date = currentDate as Date

    pickerView4.timeZone = NSTimeZone.local
    pickerView4.minuteInterval = 5
}



func createToolbar() {

    let toolBar = UIToolbar()
    toolBar.sizeToFit()

    //Customizations
    toolBar.barTintColor = .black
    toolBar.tintColor = .white

    let doneButton = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(RunInputViewController.doneButton(sender:)))

    toolBar.setItems([doneButton], animated: false)
    toolBar.isUserInteractionEnabled = true

    runTypeTextField.inputAccessoryView = toolBar
    runTextField.inputAccessoryView = toolBar
    snowTypeTextField.inputAccessoryView = toolBar
    dateTextField.inputAccessoryView = toolBar
}

func doneButton(sender: AnyObject) {

    let row = pickerView1.selectedRow(inComponent: 0);
    pickerView(pickerView1, didSelectRow: row, inComponent:0)
    view.endEditing(true)
}

func dismissKeyboard() {
    view.endEditing(true)
}

func datePickerValueChanged(sender:UIDatePicker) {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "HH:mm"
    pickerView4.datePickerMode = UIDatePickerMode.time
    dateTextField.text = dateFormatter.string(from: sender.date)
}


func numberOfComponents(in pickerView: UIPickerView) -> Int {
    return 1
}

 func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {

    if pickerView.tag == 0 {
        return runType.count
    } else if pickerView.tag == 1 {
        return selectedItemsArray.count
    } else if pickerView.tag == 2 {
        return snowType.count
    }
    return 1

}

 func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

if pickerView.tag == 0 {
    return runType[row]
} else if pickerView.tag == 1 {
    return selectedItemsArray[row]
} else if pickerView.tag == 2 {
    return snowType[row]
}

return ""

}


var selectedRow: Int = 0

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)  {

    selectedRow = row

    if pickerView == pickerView1 {
        runTypeTextField.text = runType[row]
        switch row {
        case 0:
            selectedItemsArray = RunGreen
        case 1:
            selectedItemsArray = RunBlue
        case 2:
            selectedItemsArray = RunBlack
        case 3:
            selectedItemsArray = RunDoubleBlack

        default:
            selectedItemsArray = []
        }
        pickerView2.reloadAllComponents()

    } else if pickerView == pickerView2 {
        let item = selectedItemsArray[row]
        if selectedItemsArray == rRunGreen {
            runTextField.text = item
        } else if selectedItemsArray == RunBlue {
            runTextField.text = item
        } else if selectedItemsArray == rRunBlack {
            runTextField.text = item
        } else if selectedItemsArray == RunDoubleBlack {
            runTextField.text = item
        }
    }
        if pickerView.tag == 2 {
        snowTypeTextField.text = snowType[row]
    }
}
}

Answer 1

检查此代码是否与具有不同数组输入的两个选择器和一个日期选择器一起使用

import UIKit

class PickerViewController: UIViewController,UIPickerViewDataSource, UIPickerViewDelegate {
    @IBOutlet weak var pickerVieww: UIPickerView!

    @IBOutlet weak var DateePicker: UIDatePicker!
    @IBOutlet weak var newPickr: UIPickerView!
    var viewControllerArray = [String]()
    var viewControllerArray1 = [String]()
    var value = Int()
    var value1 = Int()

    override func viewDidLoad() {
        super.viewDidLoad()
        pickerVieww.delegate = self
        pickerVieww.dataSource = self
        newPickr.delegate = self
        newPickr.dataSource = self
        pickerVieww.tag = 1
        newPickr.tag = 2
        viewControllerArray = ["controller1","controller2","controller3"]
        viewControllerArray1 = ["controller4","controller5","controller6","controller7"]
    }
    func numberOfComponents(in pickerView: UIPickerView) -> Int {

        return 1
    }
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        if pickerView == pickerVieww
        {
            return viewControllerArray.count
        }
        else if pickerView == newPickr
        {
            return viewControllerArray1.count
        }
        return 0
    }
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        if pickerView == pickerVieww
        {
            return viewControllerArray[row]
        }
        else if pickerView == newPickr
        {
            return viewControllerArray1[row]
        }

        return ""
    }
    func pickerView(_ pickerView: UIPickerView,didSelectRow row: Int,inComponent component: Int)
    {


    }
    @IBAction func DoneButton(_ sender: Any) {

        let row = pickerVieww.selectedRow(inComponent: 0);
       print("pickervieww value: \(row)")

        let row1 = newPickr.selectedRow(inComponent: 0);
        print("newpicker value: \(row1)")

        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "dd MMM yyyy"
        let date:String = dateFormatter.string(from: DateePicker.date)
        print("date: \(date)")

    }

}

控制台输出在按钮上的动作

Answer 2

所以我想出了我自己问题的答案。 我曾尝试为每个UITextFiled和UIPickerView创建单独的代码，如@ user3589771所建议，但我缺少了一些东西。

我原来的代码有

runTypeTextField.inputAccessoryView = toolBar
runTextField.inputAccessoryView = toolBar
snowTypeTextField.inputAccessoryView = toolBar
dateTextField.inputAccessoryView = toolBar

但是，一旦我为每个UITextField分离了.inputAccessoryView，它们就会全部合并在一起。

我终于解决了，答案在下面。

func createToolbar() {

    // Tool bar for 1st UIPickerView

    let toolBar1 = UIToolbar()
        toolBar1.sizeToFit()
        toolBar1.barTintColor = .black
        toolBar1.tintColor = .white

    let doneButton1 = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(RunInputViewController.doneButton1(sender:)))
        toolBar1.setItems([doneButton1], animated: false)
        toolBar1.isUserInteractionEnabled = true
        runTypeTextField.inputAccessoryView = toolBar1

    // Tool bar for 2nd UIPickerView

    let toolBar2 = UIToolbar()
        toolBar2.sizeToFit()
        toolBar2.barTintColor = .black
        toolBar2.tintColor = .white

    let doneButton2 = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(RunInputViewController.doneButton2(sender:)))
        toolBar2.setItems([doneButton2], animated: false)
        toolBar2.isUserInteractionEnabled = true
        runTextField.inputAccessoryView = toolBar2

    // Tool bar for 3rd UIPickerView


    let toolBar3 = UIToolbar()
        toolBar3.sizeToFit()
        toolBar3.barTintColor = .black
        toolBar3.tintColor = .white

    let doneButton3 = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(RunInputViewController.doneButton3(sender:)))
        toolBar3.setItems([doneButton3], animated: false)
        toolBar3.isUserInteractionEnabled = true
        snowTypeTextField.inputAccessoryView = toolBar3

    // Tool bar for UIDatePicker

    let toolBar4 = UIToolbar()
        toolBar4.sizeToFit()
        toolBar4.barTintColor = .black
        toolBar4.tintColor = .white

    let doneButton4 = UIBarButtonItem(title: "Done", style: .plain, target: self, action: #selector(RunInputViewController.doneButton4))
        toolBar4.setItems([doneButton4], animated: false)
        toolBar4.isUserInteractionEnabled = true
        dateTextField.inputAccessoryView = toolBar4

}

// Done button for 1st UIPickerView


func doneButton1(sender: AnyObject) {
    let row1 = pickerView1.selectedRow(inComponent: 0);
        pickerView(pickerView1, didSelectRow: row1, inComponent:0)
        view.endEditing(true)
}

// Done button for 2nd UIPickerView

func doneButton2(sender: AnyObject) {
    let row2 = pickerView2.selectedRow(inComponent: 0);
        pickerView(pickerView2, didSelectRow: row2, inComponent:0)
        view.endEditing(true)
}
// Done button for 3rd UIPickerView

func doneButton3(sender: AnyObject) {
    let row3 = pickerView3.selectedRow(inComponent: 0);
        pickerView(pickerView3, didSelectRow: row3, inComponent:0)
        view.endEditing(true)
}

// Done button for UIDatePicker

func doneButton4(){
    let formatter = DateFormatter()
        formatter.dateFormat = "dd/MM/yyyy HH:mm"
        dateTextField.text = formatter.string(from: pickerView4.date)
        self.view.endEditing(true)
}