Flutter Table 日历：CalendarController 问题

Question

所以根据 table 日历版本的变更日志。 3.0.0，CalendarController 被移除。我的代码中有它，现在显示为错误 Undefined class 'CalendarController'。现在，我想知道该怎么办，因为我在任何地方都找不到答案。另外，有人可以向我解释一下 CalendarController 的用途吗？

任何帮助将不胜感激，谢谢！！

Answer 1

如变更日志所述，CalendarController 在较新版本中已被删除。它用于突出显示的（当前选择的）日功能。

您可以通过将这些属性添加到 TableCalender():

来手动配置选定的日期

selectedDayPredicate: (day) {
      // Use `selectedDayPredicate` to determine which day is currently selected.
      // If this returns true, then `day` will be marked as selected.

      // Using `isSameDay` is recommended to disregard
      // the time-part of compared DateTime objects.
      return isSameDay(_selectedDay, day);
    },
    onDaySelected: (selectedDay, focusedDay) {
      if (!isSameDay(_selectedDay, selectedDay)) {
        // Call `setState()` when updating the selected day
        setState(() {
          _selectedDay = selectedDay;
          _focusedDay = focusedDay;
        });
      }
    },
    onFormatChanged: (format) {
      if (_calendarFormat != format) {
        // Call `setState()` when updating calendar format
        setState(() {
          _calendarFormat = format;
        });
      }
    },
    onPageChanged: (focusedDay) {
      // No need to call `setState()` here
      _focusedDay = focusedDay;
    },

还要确保定义 firstDay:、lastDay: 和 focusedDay: 因为 TableCalendar() 函数需要它，还要设置日历格式。

参考官方table_calendar例子：https://github.com/aleksanderwozniak/table_calendar/blob/master/example/lib/pages/basics_example.dart

Flutter Table 日历：CalendarController 问题

Flutter Table Calendar: CalendarController Question

flutter

flutter-dependencies