[英]UITextField with DatePicker crashes
I am new to iOS/Swift so please bear with me. 我是iOS / Swift的新手,请耐心等待。
I have a TextField, timeTextField, and want to display a TimePicker on click. 我有一个TextField,timeTextField,并希望在单击时显示一个TimePicker。 All this is working property but when another element is selected the app crashes why does it crash?
所有这些都是工作属性,但是当选择另一个元素时,应用程序崩溃了,为什么会崩溃? UPDATE 1: updated code code:
更新1:更新的代码为:
func setupTimePicker(){
datePickerView.datePickerMode = UIDatePickerMode.time
datePickerView.removeFromSuperview()
timeTextField.inputView = datePickerView
datePickerView.addTarget(self, action: #selector(self.datePickerValueChanged(sender:)), for: .valueChanged)
}
func datePickerValueChanged(sender:UIDatePicker) {
var date = Date()
let calendar = Calendar.current
date = sender.date;
let hour = calendar.component(.hour, from: date)
let minutes = calendar.component(.minute, from: date)
timeTextField.text = String(format: "%02d", hour) + ":" + String(format: "%02d", minutes)
}
error: 错误:
[TestApp.ViewController pickTime:]: unrecognized selector sent to instance 0x7f9305e08e20
[TestApp.ViewController pickTime:]:无法识别的选择器已发送到实例0x7f9305e08e20
Since iOS8/iOS9
, when you added a view as inputView
to UITextField
app crashes. 从
iOS8/iOS9
,将视图作为inputView
添加到UITextField
应用时崩溃。 To resolve your crash, before adding datePicker
as inputView
to UITextField
call [<pickerView> removeFromSuperView]
. 要解决崩溃,请在将
datePicker
作为inputView
添加到UITextField
请调用[<pickerView> removeFromSuperView]
。 This will solve crash issue. 这将解决崩溃问题。
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