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我目前有 2 个 UITextField,一个需要返回日期,另一个需要返回时间。
我遇到的问题是,如果我单击第一个文本字段(即“出生日期:”),则会返回我选择的日期(显然这正是我想要发生的情况) ,如果我单击第二个文本字段(即“第一顿饭的时间:”),第二个文本字段不会更新,但第一个文本字段会更新(这是我的第一个问题)。
我遇到的下一个问题是,当我单击第二个文本字段(即“第一顿饭的时间:”)时,选择器上显示日期,而不是时间(我希望显示时间) .
我认为这两个问题是相关的,但我无法弄清楚我缺少什么来区分这两个选择器。
计划是让第三个文本字段(即“最后一餐时间”)也显示一个时间(与第二个文本字段显示不同),所以我想一旦我能得到我目前遇到的这两个问题排序后,我可以将相同的解决方案应用于第三个文本字段。
正如您可以想象的那样(基于我拥有的文本字段的数量),我已将代码缩减为仅与日期选择器相关的位。
Picture of text fields from my storyboard
Picture of date picker (the same picker shows up for both text fields)
import UIKit
class ProfileCreator: UIViewController, UIPickerViewDelegate, UITextFieldDelegate, UIPickerViewDataSource {
var output: Int = 0
var output2: Int = 0
// -------------------------------------------------------------------------------------- //
// DOB Selector From Text Field Start 1 //
@IBOutlet weak var DOBSelectorTextField: UITextField!
func textFieldDidBeginEditing(DOBtextField: UITextField) {
let DOBPicker = UIDatePicker()
DOBtextField.inputView = DOBPicker
DOBPicker.datePickerMode = UIDatePickerMode.Date
DOBPicker.addTarget(self, action: "DOBpickerchanged:", forControlEvents: .ValueChanged)
}
func textFieldShouldReturn(DOBtextField: UITextField) -> Bool {
DOBtextField.resignFirstResponder()
return true
}
func DOBpickerchanged(DOBsender: UIDatePicker) {
let DOBformatter = NSDateFormatter()
DOBformatter.dateFormat = "dd MMMM yyyy"
DOBSelectorTextField.text = DOBformatter.stringFromDate(DOBsender.date)
}
// DOB Selector From Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// First Meal Time Text Field Start 1 //
@IBOutlet weak var FirstMealTimeTextField: UITextField!
@IBAction func FirstMealTimeTextField(FirstMealTimeSender: UITextField) {
let FirstMealTimePicker = UIDatePicker()
FirstMealTimeSender.inputView = FirstMealTimePicker
FirstMealTimePicker.datePickerMode = UIDatePickerMode.Time
FirstMealTimePicker.addTarget(self, action: "FirstMealTimeChanged:", forControlEvents: .ValueChanged)
}
func FirstMealTimeChanged(FirstMealTimesender: UIDatePicker) {
let FirstMealtimeFormatter = NSDateFormatter()
FirstMealtimeFormatter.dateFormat = "HH:mm"
FirstMealTimeTextField.text = FirstMealtimeFormatter.stringFromDate(FirstMealTimesender.date)
}
// First Meal Time Text Field End 1 //
// -------------------------------------------------------------------------------------- //
override func viewDidLoad() {
super.viewDidLoad()
// -------------------------------------------------------------------------------------- //
// DOB Selector From Text Field Start 2 //
DOBSelectorTextField.delegate = self
// DOB Selector From Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// First Meal Time Text Field Start 2 //
FirstMealTimeTextField.delegate = self
// First Meal Time Text Field End 2 //
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
这是与我的“创建个人资料”页面相关的完整代码。也许这有助于理解我迄今为止所做的事情。我对创建数据来自数组的选择器相当有信心,我正在努力解决的是在同一页面上执行多个日期选择器。
import UIKit
class ProfileCreator: UIViewController, UIPickerViewDelegate, UITextFieldDelegate, UIPickerViewDataSource {
var output: Int = 0
var output2: Int = 0
// -------------------------------------------------------------------------------------- //
// DOB Selector From Text Field Start 1 //
@IBOutlet weak var DOBSelectorTextField: UITextField!
func textFieldDidBeginEditing(DOBtextField: UITextField) {
let DOBPicker = UIDatePicker()
DOBtextField.inputView = DOBPicker
DOBPicker.datePickerMode = UIDatePickerMode.Date
DOBPicker.addTarget(self, action: "DOBpickerchanged:", forControlEvents: .ValueChanged)
}
func textFieldShouldReturn(DOBtextField: UITextField) -> Bool {
DOBtextField.resignFirstResponder()
return true
}
func DOBpickerchanged(DOBsender: UIDatePicker) {
let DOBformatter = NSDateFormatter()
DOBformatter.dateFormat = "dd MMMM yyyy"
DOBSelectorTextField.text = DOBformatter.stringFromDate(DOBsender.date)
}
// DOB Selector From Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Gender Selector From Text Field Start 1 //
@IBOutlet weak var GenderSelectorTextField: UITextField!
var GenderSelectorData = ["Male", "Female"]
var GenderSelectorPicker = UIPickerView()
// Gender Selector From Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Height Whole Number Text Field Start 1 //
@IBOutlet weak var HeightWholeNumberTextField: UITextField!
// Height Whole Number Text Field Start 1 //
// -------------------------------------------------------------------------------------- //
// Height Whole Number Unit Selector Text Field Start 1 //
@IBOutlet weak var HeightWholeNumberUnitSelectorTextField: UITextField!
var HeightWholeNumberUnitSelectorData = ["m", "ft"]
var HeightWholeNumberUnitSelectorPicker = UIPickerView()
// Height Whole Number Unit Selector Text Field Start 1 //
// -------------------------------------------------------------------------------------- //
// Height Decimal Number Text Field Start 1 //
@IBOutlet weak var HeightDecimalTextField: UITextField!
// Height Decimal Number Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Height Decimal Number Unit Selector Text Field Start 1 //
@IBOutlet weak var HeightDecimalNumberUnitSelectorTextField: UITextField!
var HeightDecimalNumberUnitSelectorData = ["cm", "inch"]
var HeightDecimalNumberUnitSelectorPicker = UIPickerView()
// Height Decimal Number Unit Selector Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Current Weight Whole Number Text Field Start 1 //
@IBOutlet weak var CurrentWeightWholeNumberTextField: UITextField!
// Current Weight Whole Number Text Field Start 1 //
// -------------------------------------------------------------------------------------- //
// Current Weight Whole Number Unit Selector Text Field Start 1 //
@IBOutlet weak var CurrentWeightWholeNumberUnitSelectorTextField: UITextField!
var CurrentWeightWholeNumberUnitSelectorData = ["kg", "lb"]
var CurrentWeightWholeNumberUnitSelectorPicker = UIPickerView()
// Current Weight Whole Number Unit Selector Text Field Start 1 //
// -------------------------------------------------------------------------------------- //
// Current Weight Decimal Number Text Field Start 1 //
@IBOutlet weak var CurrentWeightDecimalNumberTextField: UITextField!
// Current Weight Decimal Number Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Current Weight Decimal Number Unit Selector Text Field Start 1 //
@IBOutlet weak var CurrentWeightDecimalNumberUnitSelectorTextField: UITextField!
var CurrentWeightDecimalNumberUnitSelectorData = ["g", "oz"]
var CurrentWeightDecimalNumberUnitSelectorPicker = UIPickerView()
// Current Weight Decimal Number Unit Selector Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Current Fitness Goal Selector Text Field Start 1 //
@IBOutlet weak var CurrentFitnessGoalSelectorTextField: UITextField!
var CurrentFitnessGoalSelectorData = ["Lose Fat", "Gain Muscle", "Maintain Physique"]
var CurrentFitnessGoalSelectorPicker = UIPickerView()
// Current Fitness Goal Selector Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Weekly Activity Level Text Field Start 1 //
@IBOutlet weak var WeeklyActivityLevelTextField: UITextField!
var WeeklyActivityLevelTextFieldData = ["I am sedentary (little or no exercise)", "I am lightly active (light exercise/sports 1-3 days per week)", "I am moderately active (moderate exercise/sports 3-5 days per week)", "I am very active (hard exercise/sports 6-7 days a week)", "I am extra active (very hard exercise/sports & physical job or 2 x training"]
var WeeklyActivityLevelSelectorPicker = UIPickerView()
// Weekly Activity Level Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// First Meal Time Text Field Start 1 //
@IBOutlet weak var FirstMealTimeTextField: UITextField!
@IBAction func FirstMealTimeTextField(FirstMealTimeSender: UITextField) {
let FirstMealTimePicker = UIDatePicker()
FirstMealTimeSender.inputView = FirstMealTimePicker
FirstMealTimePicker.datePickerMode = UIDatePickerMode.Time
FirstMealTimePicker.addTarget(self, action: "FirstMealTimeChanged:", forControlEvents: .ValueChanged)
}
func FirstMealTimeChanged(FirstMealTimesender: UIDatePicker) {
let FirstMealtimeFormatter = NSDateFormatter()
FirstMealtimeFormatter.dateFormat = "HH:mm"
FirstMealTimeTextField.text = FirstMealtimeFormatter.stringFromDate(FirstMealTimesender.date)
}
// First Meal Time Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Last Meal Time Text Field Start 1 //
// Last Meal Time Text Field End 1 //
// -------------------------------------------------------------------------------------- //
// Close keyboard start //
func closekeyboard() {
self.view.endEditing(true)
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
closekeyboard()
}
// Close keyboard end //
// -------------------------------------------------------------------------------------- //
override func viewDidLoad() {
super.viewDidLoad()
// -------------------------------------------------------------------------------------- //
// DOB Selector From Text Field Start 2 //
DOBSelectorTextField.delegate = self
// DOB Selector From Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Gender Selector From Text Field Start 2 //
GenderSelectorPicker.delegate = self
GenderSelectorPicker.dataSource = self
GenderSelectorTextField.inputView = GenderSelectorPicker
// Gender Selector From Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Height Whole Number Unit Selector Text Field Start 2 //
HeightWholeNumberUnitSelectorPicker.delegate = self
HeightWholeNumberUnitSelectorPicker.dataSource = self
HeightWholeNumberUnitSelectorTextField.inputView = HeightWholeNumberUnitSelectorPicker
// Height Whole Number Unit Selector Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Height Decimal Unit Selector Text Field Start 2 //
HeightDecimalNumberUnitSelectorPicker.delegate = self
HeightDecimalNumberUnitSelectorPicker.dataSource = self
HeightDecimalNumberUnitSelectorTextField.inputView = HeightDecimalNumberUnitSelectorPicker
// Height Decimal Unit Selector Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Current Weight Whole Number Unit Selector Text Field Start 2 //
CurrentWeightWholeNumberUnitSelectorPicker.delegate = self
CurrentWeightWholeNumberUnitSelectorPicker.dataSource = self
CurrentWeightWholeNumberUnitSelectorTextField.inputView = CurrentWeightWholeNumberUnitSelectorPicker
// Current Weight Whole Number Unit Selector Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Current Weight Decimal Unit Selector Text Field Start 2 //
CurrentWeightDecimalNumberUnitSelectorPicker.delegate = self
CurrentWeightDecimalNumberUnitSelectorPicker.dataSource = self
CurrentWeightDecimalNumberUnitSelectorTextField.inputView = CurrentWeightDecimalNumberUnitSelectorPicker
// Current Weight Decimal Unit Selector Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Current Fitness Goal Selector Text Field Start 2 //
CurrentFitnessGoalSelectorPicker.delegate = self
CurrentFitnessGoalSelectorPicker.dataSource = self
CurrentFitnessGoalSelectorTextField.inputView = CurrentFitnessGoalSelectorPicker
// Current Fitness Goal Selector Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// Weekly Activity Level Selector Text Field Start 2 //
WeeklyActivityLevelSelectorPicker.delegate = self
WeeklyActivityLevelSelectorPicker.dataSource = self
WeeklyActivityLevelTextField.inputView = WeeklyActivityLevelSelectorPicker
// Weekly Activity Level Selector Text Field End 2 //
// -------------------------------------------------------------------------------------- //
// First Meal Time Text Field Start 2 //
FirstMealTimeTextField.delegate = self
// First Meal Time Text Field End 2 //
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// -------------------------------------------------------------------------------------- //
// Selectors Start 1 //
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if pickerView == GenderSelectorPicker {
output = 1
} else if pickerView == HeightWholeNumberUnitSelectorPicker {
output = 2
} else if pickerView == HeightDecimalNumberUnitSelectorPicker {
output = 3
} else if pickerView == CurrentWeightWholeNumberUnitSelectorPicker {
output = 4
} else if pickerView == CurrentWeightDecimalNumberUnitSelectorPicker {
output = 5
} else if pickerView == CurrentFitnessGoalSelectorPicker {
output = 6
} else if pickerView == WeeklyActivityLevelSelectorPicker {
output = 7
}
switch output{
case 1:
return GenderSelectorData.count
case 2:
return HeightWholeNumberUnitSelectorData.count
case 3:
return HeightDecimalNumberUnitSelectorData.count
case 4:
return CurrentWeightWholeNumberUnitSelectorData.count
case 5:
return CurrentWeightDecimalNumberUnitSelectorData.count
case 6:
return CurrentFitnessGoalSelectorData.count
case 7:
return WeeklyActivityLevelTextFieldData.count
default:
return 1
}
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if pickerView == GenderSelectorPicker {
output2 = 1
} else if pickerView == HeightWholeNumberUnitSelectorPicker {
output2 = 2
} else if pickerView == HeightDecimalNumberUnitSelectorPicker {
output2 = 3
} else if pickerView == CurrentWeightWholeNumberUnitSelectorPicker {
output2 = 4
} else if pickerView == CurrentWeightDecimalNumberUnitSelectorPicker {
output2 = 5
} else if pickerView == CurrentFitnessGoalSelectorPicker {
output2 = 6
} else if pickerView == WeeklyActivityLevelSelectorPicker {
output2 = 7
}
switch output2{
case 1:
return GenderSelectorData[row]
case 2:
return HeightWholeNumberUnitSelectorData[row]
case 3:
return HeightDecimalNumberUnitSelectorData[row]
case 4:
return CurrentWeightWholeNumberUnitSelectorData[row]
case 5:
return CurrentWeightDecimalNumberUnitSelectorData[row]
case 6:
return CurrentFitnessGoalSelectorData[row]
case 7:
return WeeklyActivityLevelTextFieldData[row]
default:
return ""
}
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == GenderSelectorPicker {
GenderSelectorTextField.text = GenderSelectorData[row]
} else if pickerView == HeightWholeNumberUnitSelectorPicker {
HeightWholeNumberUnitSelectorTextField.text = HeightWholeNumberUnitSelectorData[row]
} else if pickerView == HeightDecimalNumberUnitSelectorPicker {
HeightDecimalNumberUnitSelectorTextField.text = HeightDecimalNumberUnitSelectorData[row]
} else if pickerView == CurrentWeightWholeNumberUnitSelectorPicker {
CurrentWeightWholeNumberUnitSelectorTextField.text = CurrentWeightWholeNumberUnitSelectorData[row]
} else if pickerView == CurrentWeightDecimalNumberUnitSelectorPicker {
CurrentWeightDecimalNumberUnitSelectorTextField.text = CurrentWeightDecimalNumberUnitSelectorData[row]
} else if pickerView == CurrentFitnessGoalSelectorPicker {
CurrentFitnessGoalSelectorTextField.text = CurrentFitnessGoalSelectorData[row]
} else if pickerView == WeeklyActivityLevelSelectorPicker {
WeeklyActivityLevelTextField.text = WeeklyActivityLevelTextFieldData[row]
}
}
}
最佳答案
首先 - 在文本字段委托(delegate)回调中创建文本字段没有任何意义。我看到 IBOutlet 声明,所以我假设您正在使用 Storyboard。如果是这样,那么场景中已经拥有所有文本字段实例。只需创建一个从 EACH 文本字段到 Controller 的导出,以便您可以在需要时在代码中引用它们。
接下来,所有文本字段将调用相同的委托(delegate)或目标/操作方法。因此,在每个方法中,您需要找出哪个文本字段正在调用它并进行特殊处理。
func textFieldDidBeginEditing(textfield: UITextField) {
if textField == self.textField1 {
//do something to textfield1
}
else if textfield == textfield2 {
//do something to textfield2
}
etc....
}
关于ios - 一页上有多个 UITextFields 显示日期,但只有一个 UITextFields 显示从两个 DatePickers 中选择的日期,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35818914/
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