Flutter 颤振|如何验证时间选择器
这里我想验证时间选择器。当我要从时间选择器中选择时间时,它必须只允许我选择当前时间或当前时间之前的时间。我不应该允许选择未来的时间 这是我试过的时间选择器片段Flutter 颤振|如何验证时间选择器,flutter,dart,flutter-layout,timepicker,Flutter,Dart,Flutter Layout,Timepicker,这里我想验证时间选择器。当我要从时间选择器中选择时间时,它必须只允许我选择当前时间或当前时间之前的时间。我不应该允许选择未来的时间 这是我试过的时间选择器片段 DateTimeField( format: format, autocorrect: true, autovalidate: false, controller: _serviceDate, readOnly: true, validator: (date) =&g
DateTimeField(
format: format,
autocorrect: true,
autovalidate: false,
controller: _serviceDate,
readOnly: true,
validator: (date) => (date == null || _serviceDate.text == '')
? 'Please enter valid date'
: null,
onShowPicker: (context, currentValue) async {
final date = await showDatePicker(
context: context,
firstDate: DateTime.now(),
initialDate: currentValue ?? DateTime.now(),
lastDate: DateTime(2100));
if (date != null) {
final time = await showTimePicker(
context: context,
initialTime: TimeOfDay.fromDateTime(
currentValue ?? DateTime.now(),
),
);
return DateTimeField.combine(date, time);
} else {
return currentValue;
}
},
);
将firstDate更改为firstDate:DateTime(1900),将lastDate更改为lastDate:DateTime