带有 DatePicker 的 UITextField 崩溃

Question

我是 iOS/Swift 的新手，所以请多多包涵。

我有一个 TextField、timeTextField，并希望在单击时显示一个 TimePicker。 All this is working 属性 but when another element is selected the app crashes why does it crash? 更新 1：更新代码 代码：

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)
}

错误：

[TestApp.ViewController pickTime:]: unrecognized selector sent to instance 0x7f9305e08e20

Answer 1

自 iOS8/iOS9 起，当您将视图添加为 inputView 至 UITextField 应用程序崩溃。要解决崩溃问题，请在将 datePicker 作为 inputView 添加到 UITextField 之前调用 [<pickerView> removeFromSuperView]。这将解决崩溃问题。

带有 DatePicker 的 UITextField 崩溃

UITextField with DatePicker crashes

uidatepicker

selector

ios

swift