[英]2 TextField with 2 picker in 1 UIView
我在 1UIView 中创建了一个带有 2 个选择器的 2 个文本字段,但是我无法在正确的文本字段中显示正确的选择器,因为我不知道如何识别当前处于活动状态的视图。 我尝试了一些带有标签的东西(但只适用于选择器,不适用于文本字段),并创建 var current = UITextField()
var genre = ["-","Homme","Femme"]
var Sport = ["-","Tennis"]
var picker = UIPickerView()
var currentTextField = UITextField()
override func viewDidLoad() {
super.viewDidLoad()
picker.delegate = self
picker.dataSource = self
GenderTextField.inputView = picker
WitchSportTextField.inputView = picker
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if currentTextField == GenderTextField{
return genre.count
}else{
return Sport.count
}
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if currentTextField == GenderTextField {
GenderTextField.text = genre[row]
}else{
WitchSportTextField.text = Sport[row]
}
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if currentTextField == GenderTextField{
return genre[row]
}else{
return Sport[row]
}
}
有人作为一个想法?
首先在viewDidLoad
中将您的两个 TextField 委托分配给 self
GenderTextField.delegate = self
WitchSportTextField.delegate = self
使用此扩展来确定哪个TextField处于活动状态。
extension YourClass: UITextFieldDelegate {
func textFieldDidBeginEditing(_ textField: UITextField) {
currentTextField = textField
picker.reloadAllComponents() //Reload for accurate data
}
}
注意:变量名应以小写字母开头。 使用描述性名称来阐明您的意图:
看看这个: https : //github.com/MLSDev/development-standards/blob/master/platform/ios/swift-coding-conventions.md
这是完整的代码
var genre = ["-","Homme","Femme"]
var Sport = ["-","Tennis"]
var genrepicker = UIPickerView()
var Sportpicker = UIPickerView()
var genretTextField = UITextField()
var SportTextField = UITextField()
override func viewDidLoad() {
super.viewDidLoad()
genrepicker.delegate = self
genrepicker.dataSource = self
Sportpicker.delegate = self
Sportpicker.dataSource = self
genretTextField.inputView = genrepicker
SportTextField.inputView = Sportpicker
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if pickerView == genrepicker{
return genre.count
}else{
return Sport.count
}
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == genrepicker {
GenderTextField.text = genre[row]
}else{
WitchSportTextField.text = Sport[row]
}
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if pickerView == genrepicker{
return genre[row]
}else{
return Sport[row]
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.