Ios 根据点击的字段将数据加载到UIPIckerView
我试图找到一种方法，当用户点击视图中的不同字段时，将数据加载到我的PickerView中。我很早就让它工作了，当我完成视图的其他部分时，它不再工作了。数据现在是硬编码的，以获得项目的功能，然后数据将从主服务器上生成的XML文件中提取，该文件包含用户特定的数据 现在我只是想让选择器为一个字段（enterDispTo）工作，但最终代码需要为视图中的三个非日期字段工作 这是我目前拥有的代码。抱歉，时间太长了，但我不想遗漏一些可能是问题所在的内容。这对我来说很新鲜Ios 根据点击的字段将数据加载到UIPIckerView,ios,uidatepicker,Ios,Uidatepicker,我试图找到一种方法，当用户点击视图中的不同字段时，将数据加载到我的PickerView中。我很早就让它工作了，当我完成视图的其他部分时，它不再工作了。数据现在是硬编码的，以获得项目的功能，然后数据将从主服务器上生成的XML文件中提取，该文件包含用户特定的数据 现在我只是想让选择器为一个字段（enterDispTo）工作，但最终代码需要为视图中的三个非日期字段工作 这是我目前拥有的代码。抱歉，时间太长了，但我不想遗漏一些可能是问题所在的内容。这对我来说很新鲜 import UIKit 类分配屏幕
import UIKit
// keep your outlets at the top
@IBOutlet var myDatePicker: UIDatePicker!
@IBOutlet var userLabel: UILabel!
@IBOutlet var teamLabel: UILabel!
@IBOutlet var enterDate: UITextField!
@IBOutlet var enterSeason: UITextField!
@IBOutlet var enterSport: UITextField!
@IBOutlet var enterDispTo: UITextField!
// put variables and constants here
let today = NSDate()
var season = traSeason
var sport = traSport
var dispensedToSelector = dispensedTo
var activeField = []
var datePickerView = UIDatePicker()
var fieldDataPickerView = UIPickerView()
override func viewDidLoad() {
super.viewDidLoad()
userLabel.text = userName
teamLabel.text = teamName
// initialize the inputView of the transaction date field to a datePickerView. This will allow the date picker to appear when the field is tapped
enterDate.inputView = datePickerView
// this limits the date picker to date only
datePickerView.datePickerMode = UIDatePickerMode.Date
datePickerView.date = NSDate()
enterDate.text = NSDate().formatted
datePickerView.addTarget(self, action: "dateChangedAction", forControlEvents: UIControlEvents.ValueChanged)
//initailize the inputView of the season field to the PickerView. This will allow the picker to appear when the field is tapped
enterSeason.inputView = fieldDataPickerView
if season.count > 0 {
enterSeason.text = season[0] as! String //value in [] will be a var that sets default season
}
//initailize the inputView of the season field to the PickerView. This will allow the picker to appear when the field is tapped
enterSport.inputView = fieldDataPickerView
if sport.count == 1 {
enterSport.text = sport[0] as String //need to convert to a string
enterSport.enabled = false //do not allow editing
} else {
//do nothing
}
//initailize the inputView of the enterDispTo field to the PickerView. This will allow the picker to appear when the field is tapped
enterDispTo.inputView = fieldDataPickerView
enterDispTo.text = dispensedToSelector[0]
}
func dateChangedAction() {
datePickerView.maximumDate = NSDate()
enterDate.text = datePickerView.date.formatted
}
//func fieldChangedAction() {
// enterDispTo.text = self.itemSelected
//}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//load data into PickerView and return the value selected
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return self.activeField.count
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
return self.activeField[row] as! String
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
var itemSelected = self.activeField[row] as! String
}
//function to hide keyboard when return key is tapped
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
//funtion to hide keyboard when screen is tapped
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
self.view.endEditing(true)
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
@IBAction func seasonTapped(sender: AnyObject) {
//code for what to do when season field is tapped
activeField = season
}
@IBAction func sportTapped(sender: AnyObject) {
//code for what to do when sport field is tapped
activeField = sport
}
@IBAction func dispToTapped(sender: AnyObject) {
//code for what to do when dispTo is tapped
activeField = dispensedToSelector
//fieldDataPickerView.addTarget(self, action: "fieldChangedAction", forControlEvents: UIControlEvents.ValueChanged)
}
//让您的门店保持在顶部
@IBVAR myDatePicker:UIDatePicker！
@IBOutlet var userLabel:UILabel！
@IBVAR团队标签：UILabel！
@IBOutlet var enterDate:UITextField！
@IbExtfield:UITextField！
@IbExtField！
@IBOutlet var entredispto:UITextField！
//把变量和常量放在这里
let today=NSDate（）
var季节=Traseash
var sport=traSport
var dispensedToSelector=dispensedTo
var activeField=[]
var datePickerView=UIDatePicker（）
var fieldDataPickerView=UIPickerView（）
重写func viewDidLoad（）{
super.viewDidLoad（）
userLabel.text=用户名
teamLabel.text=团队名称
//将事务日期字段的inputView初始化为datePickerView。这将允许在点击该字段时显示日期选择器
enterDate.inputView=datePickerView
//这将日期选择器限制为仅日期
datePickerView.datePickerMode=UIDatePickerMode.Date
datePickerView.date=NSDate（）
enterDate.text=NSDate（）。已格式化
datePickerView.addTarget（自身，操作：“dateChangedAction”，forControlEvents:UIControlEvents.ValueChanged）
//将季节字段的inputView初始化为PickerView。这将允许在点击字段时显示选择器
enterSeason.inputView=fieldDataPickerView
如果season.count>0{
[]中的enterSeason.text=season[0]as！String//值将是设置默认季节的变量
}
//将季节字段的inputView初始化为PickerView。这将允许在点击字段时显示选择器
enterSport.inputView=fieldDataPickerView
如果sport.count==1{
enterSport.text=sport[0]作为字符串//需要转换为字符串
enterport.enabled=false//不允许编辑
}否则{
//无所事事
}
//将enterDispTo字段的inputView初始化为PickerView。这将允许在点击该字段时显示选择器
enterDispTo.inputView=fieldDataPickerView
enterDispTo.text=分发到选择器[0]
}
func dateChangedAction（）{
datePickerView.maximumDate=NSDate（）
enterDate.text=datePickerView.date.formatted
}
//func fieldChangedAction（）{
//enteredispto.text=self.itemSelected
//}
重写函数didReceiveMemoryWarning（）{
超级。我收到了记忆警告（）
//处置所有可以重新创建的资源。
}
//将数据加载到PickerView并返回所选的值
func numberOfComponentsInPickerView（pickerView:UIPickerView）->Int{
返回1
}
func pickerView（pickerView:UIPickerView，numberOfRowsInComponent:Int）->Int{
返回self.activeField.count
}
func pickerView（pickerView:UIPickerView，titleForRow行：Int，forComponent组件：Int）->字符串{
将self.activeField[row]返回为！字符串
}
func pickerView（pickerView:UIPickerView，didSelectRow行：Int，不完整组件：Int）{
var itemSelected=self.activeField[row]作为！字符串
}
//点击返回键时隐藏键盘的功能
func textField应返回（textField:UITextField）->Bool{
textField.resignFirstResponder（）辞职
返回真值
}
//点击屏幕时隐藏键盘的功能
覆盖func touchesBegined（触摸：设置，withEvent事件：UIEvent）{
self.view.endEditing（true）
}
/*
//标记：-导航
//在基于故事板的应用程序中，您通常需要在导航之前做一些准备
覆盖函数prepareforsgue（segue:UIStoryboardSegue，sender:AnyObject？）{
//使用segue.destinationViewController获取新的视图控制器。
//将选定对象传递给新的视图控制器。
}
*/
@iAction func（发送方：任意对象）{
//点击季节字段时的操作代码
活动场=季节
}
@iAction func（发送方：AnyObject）{
//点击运动场时的操作代码
运动场
}
@iAction func dispToTapped（发送方：AnyObject）{
//点击dispTo时要执行的操作代码
activeField=分配的选择器
//fieldDataPickerView.addTarget（自身，操作：“fieldChangedAction”，forControlEvents:UIControlEvents.ValueChanged）
}
扩展日期{
var格式：字符串{
设df=NSDateFormatter（）
df.dateFormat=“dd-MMM-yyyy”
df.locale=NSLocale（localeIdentifier：“en_us_POSIX”）
返回df.stringFromDate（self）
}
}