showSimpleDatePicker static method

Future<DateTime?> showSimpleDatePicker(BuildContext context, { DateTime? firstDate, DateTime? lastDate, DateTime? initialDate, String? dateFormat, DateTimePickerLocale locale = DATETIME_PICKER_LOCALE_DEFAULT, DateTimePickerMode pickerMode = DateTimePickerMode.date, Color? backgroundColor, Color? textColor, TextStyle? itemTextStyle, String? titleText, String? confirmText, String? cancelText, bool looping = false, bool reverse = false, })

Display date picker in bottom sheet.

context: BuildContext firstDate: DateTime minimum date time lastDate: DateTime maximum date time initialDateTime: DateTime initial date time for selected dateFormat: String date format pattern locale: DateTimePickerLocale internationalization backgroundColor: Color background color of the dialog itemTextStyle: TextStyle item TextStyle of the picker titleText: String text of the dialog's title confirmText: String text of the dialog's confirm button cancelText: String text of the dialog's cancel button

Implementation

static Future<DateTime?> showSimpleDatePicker(
  BuildContext context, {
  DateTime? firstDate,
  DateTime? lastDate,
  DateTime? initialDate,
  String? dateFormat,
  DateTimePickerLocale locale = DATETIME_PICKER_LOCALE_DEFAULT,
  DateTimePickerMode pickerMode = DateTimePickerMode.date,
  Color? backgroundColor,
  Color? textColor,
  TextStyle? itemTextStyle,
  String? titleText,
  String? confirmText,
  String? cancelText,
  bool looping = false,
  bool reverse = false,
}) {
  DateTime? _selectedDate = initialDate ?? DateTime.now().startOfDay();
  final List<Widget> listButtonActions = [
    TextButton(
      style: TextButton.styleFrom(foregroundColor: textColor),
      child: Text(confirmText ?? "OK"),
      onPressed: () {
        Navigator.pop(context, _selectedDate);
      },
    ),
    TextButton(
      style: TextButton.styleFrom(foregroundColor: textColor),
      child: Text(cancelText ?? "Cancel"),
      onPressed: () {
        Navigator.pop(context);
      },
    )
  ];

  // handle the range of datetime
  if (firstDate == null) {
    firstDate = DateTime.parse(DATE_PICKER_MIN_DATETIME);
  }
  if (lastDate == null) {
    lastDate = DateTime.parse(DATE_PICKER_MAX_DATETIME);
  }

  // handle initial DateTime
  if (initialDate == null) {
    initialDate = DateTime.now();
  }

  if (backgroundColor == null)
    backgroundColor = DateTimePickerTheme.Default.backgroundColor;
//    if (itemTextStyle == null)
//      itemTextStyle = DateTimePickerTheme.Default.itemTextStyle;

  if (textColor == null)
    textColor = DateTimePickerTheme.Default.itemTextStyle.color;

  var datePickerDialog = AlertDialog(
    title: Text(
      titleText ?? "Select Date",
      style: TextStyle(color: textColor),
    ),
    contentPadding: EdgeInsets.symmetric(vertical: 0, horizontal: 14),
    backgroundColor: backgroundColor,
    content: Container(
      width: 300,
      child: DatePickerWidget(
        firstDate: firstDate,
        lastDate: lastDate,
        initialDate: initialDate,
        dateFormat: dateFormat,
        locale: locale,
        pickerTheme: DateTimePickerTheme(
          backgroundColor: backgroundColor,
          itemTextStyle: itemTextStyle ?? TextStyle(color: textColor),
        ),
        onChange: ((DateTime date, list) {
          print(date);
          _selectedDate = date;
        }),
        looping: looping,
      ),
    ),
    actions:
        reverse ? listButtonActions.reversed.toList() : listButtonActions,
  );
  return showDialog(
      useRootNavigator: false,
      context: context,
      builder: (context) => datePickerDialog);
}