syntax.dart

FlatButton(
    onPressed: () {
        DatePicker.showDatePicker(context,
          showTitleActions: true,
          minTime: DateTime(2000, 1, 1),
          maxTime: DateTime(2022, 12, 31),
          onChanged: (date) {print('change $date');},
          onConfirm: (date) {print('confirm $date');},
          currentTime: DateTime.now(), locale: LocaleType.en);},
    child: Text('Show DateTime Picker',)
);

missing "," on 5th line

Thanks @zielu92 for pointing out. It's fixed now.