showPlatformSpecificDatePicker function

Future<DateTime?> showPlatformSpecificDatePicker({ required BuildContext context, required DateTime initialDate, required DateTime firstDate, required DateTime lastDate, DateTime? currentDate, DatePickerEntryMode initialEntryMode = DatePickerEntryMode.calendar, SelectableDayPredicate? selectableDayPredicate, String? helpText, String? cancelText, String? confirmText, Locale? locale, bool useRootNavigator = true, RouteSettings? routeSettings, TextDirection? textDirection, TransitionBuilder? builder, DatePickerMode initialDatePickerMode = DatePickerMode.day, String? errorFormatText, String? errorInvalidText, String? fieldHintText, String? fieldLabelText, })

Shows a platform specific date picker with the given initialDateTime with a possible range starting with firstDate and ending with lastDate.

On iOS and macOS a CupertinoDatePicker is used. The builder, initialEntryMode, helpText, useRootNavigator and rootSettings parameters are ignored there. On other platforms the Material showTimePicker method is called with the given parameters.

Implementation

Future<DateTime?> showPlatformSpecificDatePicker({
  required BuildContext context,
  required DateTime initialDate,
  required DateTime firstDate,
  required DateTime lastDate,
  DateTime? currentDate,
  DatePickerEntryMode initialEntryMode = DatePickerEntryMode.calendar,
  SelectableDayPredicate? selectableDayPredicate,
  String? helpText,
  String? cancelText,
  String? confirmText,
  Locale? locale,
  bool useRootNavigator = true,
  RouteSettings? routeSettings,
  TextDirection? textDirection,
  TransitionBuilder? builder,
  DatePickerMode initialDatePickerMode = DatePickerMode.day,
  String? errorFormatText,
  String? errorInvalidText,
  String? fieldHintText,
  String? fieldLabelText,
}) async {
  if (PlatformInfo.isCupertino) {
    DateTime? pickedTime;
    final result = await showCupertinoModalPopup<bool>(
      context: context,
      builder: (context) => SizedBox(
        width: MediaQuery.of(context).size.width,
        height: MediaQuery.of(context).size.height * 0.4,
        child: Container(
          color: CupertinoTheme.of(context).barBackgroundColor,
          child: Column(
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  CupertinoButton(
                      child: (cancelText != null)
                          ? Text(cancelText)
                          : Icon(CupertinoIcons.clear_circled),
                      onPressed: () => Navigator.of(context).pop(false)),
                  CupertinoButton(
                      child: (confirmText != null)
                          ? Text(confirmText)
                          : Icon(CupertinoIcons.check_mark_circled),
                      onPressed: () => Navigator.of(context).pop(true)),
                ],
              ),
              Expanded(
                child: CupertinoDatePicker(
                  mode: CupertinoDatePickerMode.date,
                  onDateTimeChanged: (value) => pickedTime = value,
                  use24hFormat: MediaQuery.of(context).alwaysUse24HourFormat,
                  initialDateTime: initialDate,
                ),
              ),
            ],
          ),
        ),
      ),
    );
    if (result == true && pickedTime != null) {
      return pickedTime;
    }
    return null;
  } else {
    return showDatePicker(
      context: context,
      initialDate: initialDate,
      firstDate: firstDate,
      lastDate: lastDate,
      currentDate: currentDate,
      initialEntryMode: initialEntryMode,
      selectableDayPredicate: selectableDayPredicate,
      helpText: helpText,
      cancelText: cancelText,
      confirmText: confirmText,
      locale: locale,
      useRootNavigator: useRootNavigator,
      routeSettings: routeSettings,
      textDirection: textDirection,
      builder: builder,
      initialDatePickerMode: initialDatePickerMode,
      errorFormatText: errorFormatText,
      errorInvalidText: errorInvalidText,
      fieldHintText: fieldHintText,
      fieldLabelText: fieldLabelText,
    );
  }
}