我已经用uiviewcontroller
和uitextfields
,当用户点击文本字段uipickerview
时,如附件所示。
如何生成多个uipickerview
?例如,当用户点击国家/地区文本字段时,pickerview将显示国家/地区数组数据,当用户点击性别文本字段时,uipickerview将显示性别数组数据,依此类推。我试过了,但只能在一个数组中完成,这个数组是我的代码中显示的国家。如果您能告诉我如何在我的uitextfields的其余部分中使用它,我将不胜感激。
import UIKit
class testVC: UIViewController,UITextViewDelegate,UINavigationControllerDelegate,UIImagePickerControllerDelegate,UIPickerViewDelegate,UIPickerViewDataSource {
var countries = ["USA","UK","Spain" ]
var gender = ["Male","Female","Both"]
var language = ["English","French","Spanish","Other"]
override func viewDidLoad() {
super.viewDidLoad()
var pickerView = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 100))
pickerView.backgroundColor = .whiteColor()
pickerView.showsSelectionIndicator = true
var toolBar = UIToolbar()
toolBar.barStyle = UIBarStyle.Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)
toolBar.sizeToFit()
pickerView.delegate = self
pickerView.dataSource = self
[![enter image description here][1]][1]
var doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Plain, target: self, action: "donePicker")
var spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
var cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Plain, target: self, action: "canclePicker")
toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
toolBar.userInteractionEnabled = true
genderTxt.inputView = pickerView
genderTxt.inputAccessoryView = toolBar
countriesTxt.inputView = pickerView
countriesTxt.inputAccessoryView = toolBar
categoriesTxt.inputView = pickerView
categoriesTxt.inputAccessoryView = toolBar
startDateTxt.inputView = pickerView
startDateTxt.inputAccessoryView = toolBar
endDateTxt.inputView = pickerView
endDateTxt.inputAccessoryView = toolBar
languageTxt.inputView = pickerView
languageTxt.inputAccessoryView = toolBar
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return countries.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
return countries[row]
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
var itemselected = countries[row]
countriesTxt.text = itemselected
}
最佳答案
您不需要多个UIPickerView
。相反,您需要基于第一个响应程序文本视图设置选择器视图数据源。您还应该实现textFieldShouldBeginEditing
委托方法,通过调用picker视图的reloadAllComponents
方法来重新加载其内容。
var pickerView : UIPickerView!
override func viewDidLoad() {
self.pickerView = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 100))
NSNotificationCenter.defaultCenter().addObserver(self, selector: ("updatePicker"), name: UITextFieldTextDidBeginEditingNotification, object: nil)
}
func updatePicker(){
self.pickerView.reloadAllComponents()
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if countriesTxt.isFirstResponder(){
return countries.count
}else if genderTxt.isFirstResponder(){
return gender.count
}
// continue this way and implement all cases
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
if countriesTxt.isFirstResponder(){
return countries[row]
}else if genderTxt.isFirstResponder(){
return gender[row]
}
// continue this way and implement all cases
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if countriesTxt.isFirstResponder(){
var itemselected = countries[row]
countriesTxt.text = itemselected
}else if genderTxt.isFirstResponder(){
var itemselected = gender[row]
genderTxt.text = itemselected
}
// ...
}
关于swift - 如何在Swift中为多个UIpickerview设置数据?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/32010730/