app-starlock/lib/tools/showCalendar.dart

import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

import '../app_settings/app_settings.dart';

typedef SelectDateCallback(DateTime dateTime);

class ShowCalendar extends StatelessWidget {
  SelectDateCallback? selectAction;
  DatePickerMode? datePickerMode;

  ShowCalendar({Key? key, this.selectAction, this.datePickerMode}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Dialog(
      // insetPadding: EdgeInsets.all(10), //距离
      shape: const RoundedRectangleBorder(
          borderRadius: BorderRadius.all(Radius.circular(20))), //形状
      backgroundColor: Colors.white,
      clipBehavior: Clip.antiAlias, //强制裁剪
      elevation: 10,
      child: SizedBox(
        //需要在内部限制下高度和宽度才能更好的显示
        height: 350,
        width: 1.sw - 40.w,
        child: _calendarDatePicker(datePickerMode!),
      ),
    );
  }

  CalendarDatePicker _calendarDatePicker(DatePickerMode mode){
    return CalendarDatePicker(
        initialDate: DateTime.now(), // 初始化选中日期
        // currentDate: DateTime(2020, 10, 18),
        firstDate: DateTime(2000, 1, 1),  // 开始日期
        lastDate: DateTime(2100, 1, 1),  // 结束日期
        initialCalendarMode: mode, // 日期选择样式
        // 选中日期改变回调函数
        onDateChanged:selectAction!,
        // 月份改变回调函数
        onDisplayedMonthChanged: (dateTime){
          // AppLog.log("onDisplayedMonthChanged $dateTime");
        },
        // 筛选日期可不可点回调函数
        selectableDayPredicate: (dayTime){
          if(dayTime == DateTime(2020, 10, 15) || dayTime == DateTime(2020, 10, 16) || dayTime == DateTime(2020, 10, 17)) {
            return false;
          }
          return true;
        }
    );
  }
}