下面是我的代码，这允许一个 Textfield 有一个弹出的 pickerView 作为输入源。我想知道我需要添加什么才能允许第二个 TextField 也有一个弹出的 pickerView 作为输入源。
我已设法使firstName文本字段正常工作，但未能使secondNames正常工作。
class RefereeViewController: UIViewController, UIPickerViewDelegate,UIPickerViewDataSource, UITextFieldDelegate, UINavigationControllerDelegate
{
@IBOutlet weak var firstNameTextField: UITextField!
@IBOutlet weak var secondNameTextField: UITextField!
var firstNames = ["Lewis", "Jason","Alex","Mason"]
var secondNames = ["Davies", "Jones","Rees","Kristensen"]
var pickerView = UIPickerView()
override func viewDidLoad()
{
super.viewDidLoad()
pickerView.delegate = self
pickerView.dataSource = self
firstNameTextField.inputView = pickerView
firstNameTextField.textAlignment = .center
firstNameTextField.placeholder = "Select Name"
}
public func numberOfComponents(in pickerView: UIPickerView) -> Int
{
return 1
}
public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
return firstNames.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
{
return firstNames[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{
firstNameTextField.text = reports[row]
}
最佳答案
class RefereeViewController: UIViewController, UIPickerViewDelegate,UIPickerViewDataSource, UITextFieldDelegate, UINavigationControllerDelegate
{
@IBOutlet weak var firstNameTextField: UITextField!
@IBOutlet weak var secondNameTextField: UITextField!
var firstNames = ["Lewis", "Jason","Alex","Mason"]
var secondNames = ["Davies", "Jones","Rees","Kristensen"]
let firstNamePicker = UIPickerView()
let secondNamePicker = UIPickerView()
override func viewDidLoad()
{
super.viewDidLoad()
firstNamePicker.delegate = self
firstNamePicker.dataSource = self
secondNamePicker.delegate = self
secondNamePicker.dataSource = self
firstNameTextField.inputView = firstNamePicker
firstNameTextField.textAlignment = .center
firstNameTextField.placeholder = "Select First Name"
secondNameTextField.inputView = secondNamePicker
secondNameTextField.textAlignment = .center
secondNameTextField.placeholder = "Select Second Name"
}
public func numberOfComponents(in pickerView: UIPickerView) -> Int
{
return 1
}
public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
return pickerView == firstNamePicker ? firstNames.count : secondNames.count
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{
if pickerView == firstNamePicker {
firstNameTextField.text = firstNames[row]
} else {
secondNameTextField.text = secondNames[row]
}
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return pickerView == firstNamePicker ? firstNames[row] : secondNames[row]
}
}
关于ios - 如何多次使用 UIPickerView 和 TextField ？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49676918/