创建configuration类，将配置的信息放到这里

引入provider状态管理,避免深层嵌套传递信息

lib/CalendarProvider.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_custom_calendar/configuration.dart';
+import 'package:flutter_custom_calendar/model/date_model.dart';
+
+/**
+ * 引入provider的状态管理，保存一些临时信息
+ *
+ * 目前的情况：只需要获取状态，不需要监听rebuild
+ */
+class CalendarProvider extends ChangeNotifier {
+  Set<DateModel> selectedDateList = new Set(); //被选中的日期,用于多选
+  DateModel _selectDateModel; //当前选中的日期，用于单选
+
+  DateModel get selectDateModel => _selectDateModel;
+
+  set selectDateModel(DateModel value) {
+    _selectDateModel = value;
+    print("notifyListeners:$value");
+    notifyListeners();
+  }
+
+  //配置类也放这里吧，这样的话，所有子树，都可以拿到配置的信息
+  CalendarConfiguration calendarConfiguration;
+
+  void initData(
+      {Set<DateModel> selectedDateList,
+      DateModel selectDateModel,
+      CalendarConfiguration calendarConfiguration}) {
+    print("CalendarProvider init");
+    if (selectedDateList != null) {
+      this.selectedDateList.addAll(selectedDateList);
+    }
+    this.selectDateModel = selectDateModel;
+    this.calendarConfiguration = calendarConfiguration;
+  }
+
+  //退出的时候，清除数据
+  void clearData() {
+    print("CalendarProvider clearData");
+    selectedDateList.clear();
+    selectDateModel = null;
+  }
+}

lib/configuration.dart

@@ -0,0 +1,88 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_custom_calendar/controller.dart';
+import 'package:flutter_custom_calendar/model/date_model.dart';
+
+/**
+ * 配置信息类
+ */
+class CalendarConfiguration {
+  //默认是单选,可以配置为MODE_SINGLE_SELECT，MODE_MULTI_SELECT
+  int selectMode;
+
+  //展开状态
+  bool expandStatus;
+
+  //日历显示的最小年份和最大年份
+  int minYear;
+  int maxYear;
+
+  //日历显示的最小年份的月份，最大年份的月份
+  int minYearMonth;
+  int maxYearMonth;
+
+  //日历显示的当前的年份和月份
+  int nowYear;
+  int nowMonth;
+
+  //可操作的范围设置,比如点击选择
+  int minSelectYear;
+  int minSelectMonth;
+  int minSelectDay;
+
+  int maxSelectYear;
+  int maxSelectMonth;
+  int maxSelectDay; //注意：不能超过对应月份的总天数
+
+  Set<DateModel> defaultSelectedDateList = new Set(); //默认被选中的日期
+  int maxMultiSelectCount; //多选，最多选多少个
+  Map<DateTime, Object> extraDataMap = new Map(); //自定义额外的数据
+
+  /**
+   * UI绘制相关的配置
+   */
+  //各种事件回调
+  OnMonthChange monthChange; //月份切换事件
+  OnCalendarSelect calendarSelect; //点击选择事件
+  OnMultiSelectOutOfRange multiSelectOutOfRange; //多选超出指定范围
+  OnMultiSelectOutOfSize multiSelectOutOfSize; //多选超出限制个数
+
+  //支持自定义绘制
+  DayWidgetBuilder dayWidgetBuilder; //创建日历item
+  WeekBarItemWidgetBuilder weekBarItemWidgetBuilder; //创建顶部的weekbar
+
+  /**
+   * 下面的信息不是配置的，是根据配置信息进行计算出来的
+   */
+  List<DateModel> monthList = new List(); //月份list
+  List<DateModel> weekList = new List(); //星期list
+  PageController pageController; //月份的controller
+  PageController weekController; //星期的controller
+
+  CalendarConfiguration(
+      {this.selectMode,
+      this.expandStatus,
+      this.minYear,
+      this.maxYear,
+      this.minYearMonth,
+      this.maxYearMonth,
+      this.nowYear,
+      this.nowMonth,
+      this.minSelectYear,
+      this.minSelectMonth,
+      this.minSelectDay,
+      this.maxSelectYear,
+      this.maxSelectMonth,
+      this.maxSelectDay,
+      this.defaultSelectedDateList,
+      this.maxMultiSelectCount,
+      this.extraDataMap,
+      this.monthList,
+      this.weekList,
+      this.pageController,
+      this.weekController});
+
+  @override
+  String toString() {
+    return 'CalendarConfiguration{selectMode: $selectMode, expandStatus: $expandStatus, minYear: $minYear, maxYear: $maxYear, minYearMonth: $minYearMonth, maxYearMonth: $maxYearMonth, nowYear: $nowYear, nowMonth: $nowMonth, minSelectYear: $minSelectYear, minSelectMonth: $minSelectMonth, minSelectDay: $minSelectDay, maxSelectYear: $maxSelectYear, maxSelectMonth: $maxSelectMonth, maxSelectDay: $maxSelectDay, defaultSelectedDateList: $defaultSelectedDateList, maxMultiSelectCount: $maxMultiSelectCount, extraDataMap: $extraDataMap, monthList: $monthList, weekList: $weekList, pageController: $pageController, weekController: $weekController}';
+  }
+}

lib/controller.dart

@@ -1,9 +1,13 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_custom_calendar/CalendarProvider.dart';
+import 'package:flutter_custom_calendar/configuration.dart';
+import 'package:flutter_custom_calendar/utils/date_util.dart';
 import 'package:flutter_custom_calendar/widget/default_combine_day_view.dart';
 import 'package:flutter_custom_calendar/widget/default_custom_day_view.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
 import 'package:flutter_custom_calendar/widget/default_week_bar.dart';
 import 'package:flutter_custom_calendar/constants/constants.dart';
+import 'package:provider/provider.dart';
 
 /**
  * 利用controller来控制视图
@@ -13,55 +17,19 @@ class CalendarController {
   static const Set<DateTime> EMPTY_SET = {};
   static const Map<DateTime, Object> EMPTY_MAP = {};
 
-  //默认是单选,可以配置为MODE_SINGLE_SELECT，MODE_MULTI_SELECT
-  int selectMode;
+  CalendarConfiguration calendarConfiguration;
 
-  //展开状态
-  bool expandStatus;
-  ValueNotifier<bool> expandChanged;
-
-  //日历显示的最小年份和最大年份
-  int minYear;
-  int maxYear;
-
-  //日历显示的最小年份的月份，最大年份的月份
-  int minYearMonth;
-  int maxYearMonth;
-
-  //日历显示的当前的年份和月份
-  int nowYear;
-  int nowMonth;
-
-  //可操作的范围设置,比如点击选择
-  int minSelectYear;
-  int minSelectMonth;
-  int minSelectDay;
-
-  int maxSelectYear;
-  int maxSelectMonth;
-  int maxSelectDay; //注意：不能超过对应月份的总天数
-
-  Set<DateModel> selectedDateList = new Set(); //被选中的日期,用于多选
-  DateModel selectDateModel; //当前选择项,用于单选
-  int maxMultiSelectCount; //多选，最多选多少个
-  Map<DateTime, Object> extraDataMap = new Map(); //自定义额外的数据
-
-  //各种事件回调
-  OnMonthChange monthChange; //月份切换事件
-  OnCalendarSelect calendarSelect; //点击选择事件
-  OnMultiSelectOutOfRange multiSelectOutOfRange; //多选超出指定范围
-  OnMultiSelectOutOfSize multiSelectOutOfSize; //多选超出限制个数
-
-  //支持自定义绘制
-  DayWidgetBuilder dayWidgetBuilder; //创建日历item
-  WeekBarItemWidgetBuilder weekBarItemWidgetBuilder; //创建顶部的weekbar
+  CalendarProvider calendarProvider = CalendarProvider();
 
   /**
    * 下面的信息不是配置的
    */
   List<DateModel> monthList = new List(); //月份list
-  List<DateModel> weekList=new List();//星期list
-  PageController pageController;
+  List<DateModel> weekList = new List(); //星期list
+  PageController pageController; //月份的controller
+  PageController weekController; //星期的controller
+
+  ValueNotifier<bool> expandChanged; //扩展模式发生变化
 
   CalendarController(
       {int selectMode = Constants.MODE_SINGLE_SELECT,
@@ -84,32 +52,31 @@ class CalendarController {
       DateModel selectDateModel,
       int maxMultiSelectCount = 9999,
       Map<DateTime, Object> extraDataMap = EMPTY_MAP}) {
-    this.selectMode = selectMode;
-    this.minYear = minYear;
-    this.maxYear = maxYear;
-    this.minYearMonth = minYearMonth;
-    this.maxYearMonth = maxYearMonth;
-    this.nowYear = nowYear;
-    this.nowMonth = nowMonth;
-    this.minSelectYear = minSelectYear;
-    this.minSelectMonth = minSelectMonth;
-    this.minSelectDay = minSelectDay;
-    this.maxSelectYear = maxSelectYear;
-    this.maxSelectMonth = maxSelectMonth;
-    this.maxSelectDay = maxSelectDay;
-    this.selectDateModel = selectDateModel;
-    this.dayWidgetBuilder = dayWidgetBuilder;
-    this.weekBarItemWidgetBuilder = weekBarItemWidgetBuilder;
-    this.maxMultiSelectCount = maxMultiSelectCount;
-    this.extraDataMap = extraDataMap;
-    this.expandStatus = expandStatus;
-    this.expandChanged=ValueNotifier(expandStatus);
-
-    this.selectedDateList = Set();
+    this.expandChanged = ValueNotifier(expandStatus);
+
+    calendarConfiguration = CalendarConfiguration(
+        selectMode: selectMode,
+        minYear: minYear,
+        maxYear: maxYear,
+        maxYearMonth: maxYearMonth,
+        nowYear: nowYear,
+        nowMonth: nowMonth,
+        minSelectYear: minSelectYear,
+        minSelectMonth: minSelectMonth,
+        minYearMonth: minYearMonth,
+        minSelectDay: minSelectDay,
+        maxSelectYear: maxSelectYear,
+        maxSelectMonth: maxSelectMonth,
+        maxSelectDay: maxSelectDay);
+
+    calendarConfiguration.dayWidgetBuilder = dayWidgetBuilder;
+    calendarConfiguration.weekBarItemWidgetBuilder = weekBarItemWidgetBuilder;
+
     if (selectedDateTimeList != null && selectedDateTimeList.isNotEmpty) {
-      this.selectedDateList.addAll(selectedDateTimeList.map((dateTime) {
-            return DateModel.fromDateTime(dateTime);
-          }).toSet());
+      calendarConfiguration.defaultSelectedDateList
+          .addAll(selectedDateTimeList.map((dateTime) {
+        return DateModel.fromDateTime(dateTime);
+      }).toSet());
     }
 
     //初始化pageController,initialPage默认是当前时间对于的页面
@@ -141,26 +108,56 @@ class CalendarController {
       }
     }
     this.pageController = new PageController(initialPage: initialPage);
+
+    //计算一共多少周
+    //计算方法：第一天是周几，最后一天是周几，中间的天数/7后加上2就是结果了
+    int initialWeekPage;
+    int nowWeekIndex = 0;
+    weekList.clear();
+    int sumDays = 0; //总天数
+
+    DateTime firstDayOfMonth = DateTime(minYear, minYearMonth, 1);
+    //计算第一个星期的第一天的日期
+    DateTime firstWeekDate =
+        firstDayOfMonth.add(Duration(days: -(firstDayOfMonth.weekday - 1)));
+    print("第一个星期的第一天的日期firstWeekDate:$firstWeekDate");
+    DateTime lastDay = DateTime(maxYear, maxYearMonth,
+        DateUtil.getMonthDaysCount(maxYear, maxYearMonth));
+    print("最后一天：$lastDay");
+    for (DateTime dateTime = firstWeekDate;
+        dateTime.isBefore(lastDay);
+        dateTime = dateTime.add(Duration(days: 7))) {
+      DateModel dateModel = DateModel.fromDateTime(dateTime);
+      weekList.add(dateModel);
+    }
+    this.weekController = new PageController();
+
+    calendarConfiguration.monthList = monthList;
+    calendarConfiguration.weekList = weekList;
+    calendarConfiguration.pageController = pageController;
+    calendarConfiguration.weekController = weekController;
+    calendarConfiguration.dayWidgetBuilder = dayWidgetBuilder;
+    calendarConfiguration.weekBarItemWidgetBuilder = weekBarItemWidgetBuilder;
   }
 
   //月份切换监听
   void addMonthChangeListener(OnMonthChange listener) {
-    this.monthChange = listener;
+    this.calendarConfiguration.monthChange = listener;
   }
 
   //点击选择监听
   void addOnCalendarSelectListener(OnCalendarSelect listener) {
-    this.calendarSelect = listener;
+    this.calendarConfiguration.calendarSelect = listener;
   }
 
   //多选超出指定范围
   void addOnMultiSelectOutOfRangeListener(OnMultiSelectOutOfRange listener) {
-    this.multiSelectOutOfRange = listener;
+    this.calendarConfiguration.multiSelectOutOfRange = listener;
   }
 
   //多选超出限制个数
   void addOnMultiSelectOutOfSizeListener(OnMultiSelectOutOfSize listener) {
-    this.multiSelectOutOfSize = listener;
+    this.calendarConfiguration.multiSelectOutOfSize = listener;
   }
 
   //跳转到指定日期
@@ -237,30 +234,21 @@ class CalendarController {
 
   //获取被选中的日期,多选
   Set<DateModel> getMultiSelectCalendar() {
-    if (selectedDateList.isEmpty) {
-      return null;
-    }
-    return selectedDateList;
+    return calendarProvider.selectedDateList;
   }
 
   //获取被选中的日期，单选
   DateModel getSingleSelectCalendar() {
-    if (selectDateModel == null) {
-      return null;
-    }
-    return selectDateModel;
+    return calendarProvider.selectDateModel;
   }
 
   //切换展开状态
-  void toggleExpandStatus(){
-    expandChanged.value=!expandChanged.value;
+  void toggleExpandStatus() {
+    expandChanged.value = !expandChanged.value;
     print("toggleExpandStatus：${expandChanged.value}");
   }
 
-  void addExpandChangeListener(){
-
-  }
-
+  void addExpandChangeListener() {}
 }
 
 /**

lib/utils/date_util.dart

@@ -14,6 +14,16 @@ class DateUtil {
         dateTime.weekday == DateTime.sunday;
   }
 
+  /**
+   * 获取某年的天数
+   */
+  static int getYearDaysCount(int year) {
+    if (isLeapYear(year)) {
+      return 366;
+    }
+    return 365;
+  }
+
   /**
    * 获取某月的天数
    *

lib/widget/calendar_view.dart

@@ -1,13 +1,19 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_custom_calendar/CalendarProvider.dart';
+import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/constants/constants.dart';
 import 'package:flutter_custom_calendar/controller.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
 import 'package:flutter_custom_calendar/widget/month_view_pager.dart';
 import 'package:flutter_custom_calendar/widget/week_view_pager.dart';
+import 'package:provider/provider.dart';
 
 /**
  * 暂时默认是周一开始的
  */
+
+//由于旧的代码关系。。所以现在需要抽出一个StatefulWidget放在StatelessWidget里面
 class CalendarViewWidget extends StatefulWidget {
   //整体的背景设置
   BoxDecoration boxDecoration;
@@ -15,125 +21,155 @@ class CalendarViewWidget extends StatefulWidget {
   //控制器
   CalendarController calendarController;
 
-  CalendarViewWidget({@required this.calendarController, this.boxDecoration});
+  CalendarViewWidget(
+      {Key key, @required this.calendarController, this.boxDecoration})
+      : super(key: key);
 
   @override
   _CalendarViewWidgetState createState() => _CalendarViewWidgetState();
 }
 
-class _CalendarViewWidgetState extends State<CalendarViewWidget>
+class _CalendarViewWidgetState extends State<CalendarViewWidget> {
+  @override
+  void initState() {
+    widget.calendarController.calendarProvider.initData(
+        calendarConfiguration: widget.calendarController.calendarConfiguration);
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ChangeNotifierProvider<CalendarProvider>.value(
+      value: widget.calendarController.calendarProvider,
+      child: Container(
+          //外部可以自定义背景设置
+          decoration: widget.boxDecoration,
+          child: const CalendarContainer()),
+    );
+  }
+}
+
+class CalendarContainer extends StatefulWidget {
+  const CalendarContainer();
+
+  @override
+  CalendarContainerState createState() => CalendarContainerState();
+}
+
+class CalendarContainerState extends State<CalendarContainer>
     with SingleTickerProviderStateMixin {
   double itemHeight;
   double totalHeight;
 
   bool expand = true;
 
-  AnimationController _animationController;
-
   @override
   void initState() {
-    _animationController =
-        AnimationController(duration: Duration(milliseconds: 200), vsync: this);
+//    widget.calendarController.expandChanged.addListener(() {
+//      print("_CalendarViewWidgetState:$expand");
+//      setState(() {
+//        expand = !expand;
+//      });
+//    });
+//
+  }
 
-    widget.calendarController.expandChanged.addListener(() {
-      print("_CalendarViewWidgetState:$expand");
-      setState(() {
-        expand = !expand;
-      });
-    });
+  @override
+  void dispose() {
+    super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
+    print("CalendarContainerState build");
     //暂时先这样写死,提前计算布局的高度,不然会出现问题:a horizontal viewport was given an unlimited amount of I/flutter ( 6759): vertical space in which to expand.
     itemHeight = MediaQuery.of(context).size.width / 7;
     totalHeight = itemHeight * 6 + 10 * (6 - 1);
     return Container(
-      //外部可以自定义背景设置
-      decoration: widget.boxDecoration,
       child: new Column(
         children: <Widget>[
           /**
            * 利用const，避免每次setState都会刷新到这顶部的view
            */
-          widget.calendarController.weekBarItemWidgetBuilder(),
+//          widget.calendarController.weekBarItemWidgetBuilder(),
           AnimatedContainer(
-            duration: Duration(milliseconds: 500),
-            height: expand ? totalHeight : itemHeight,
-            child: expand
-                ? Container(
-                    height: totalHeight,
-                    child: MonthViewPager(
-                      selectMode: widget.calendarController.selectMode,
-                      monthChange: (int year, int month) {
-                        widget.calendarController.monthChange(year, month);
-                      },
-                      calendarSelect: (dateModel) {
-                        widget.calendarController.selectDateModel = dateModel;
-                        widget.calendarController.calendarSelect(dateModel);
-                      },
-                      monthList: widget.calendarController.monthList,
-                      pageController: widget.calendarController.pageController,
-                      selectedDateList:
-                          widget.calendarController.selectedDateList,
-                      selectDateModel:
-                          widget.calendarController.selectDateModel,
-                      dayWidgetBuilder:
-                          widget.calendarController.dayWidgetBuilder,
-                      minSelectDate: DateModel()
-                        ..year = widget.calendarController.minSelectYear
-                        ..month = widget.calendarController.minSelectMonth
-                        ..day = widget.calendarController.minSelectDay,
-                      maxSelectDate: DateModel()
-                        ..year = widget.calendarController.maxSelectYear
-                        ..month = widget.calendarController.maxSelectMonth
-                        ..day = widget.calendarController.maxSelectDay,
-                      maxMultiSelectCount:
-                          widget.calendarController.maxMultiSelectCount,
-                      multiSelectOutOfRange:
-                          widget.calendarController.multiSelectOutOfRange,
-                      multiSelectOutOfSize:
-                          widget.calendarController.multiSelectOutOfSize,
-                      extraDataMap: widget.calendarController.extraDataMap,
-                    ),
-                  )
-                : Container(
-                    height: itemHeight,
-                    child: WeekViewPager(
-                      selectMode: widget.calendarController.selectMode,
-                      monthChange: (int year, int month) {
-                        widget.calendarController.monthChange(year, month);
-                      },
-                      calendarSelect: (dateModel) {
-                        widget.calendarController.selectDateModel = dateModel;
-                        widget.calendarController.calendarSelect(dateModel);
-                      },
-                      weekList: widget.calendarController.weekList,
-                      pageController: widget.calendarController.pageController,
-                      selectedDateList:
-                          widget.calendarController.selectedDateList,
-                      selectDateModel:
-                          widget.calendarController.selectDateModel,
-                      dayWidgetBuilder:
-                          widget.calendarController.dayWidgetBuilder,
-                      minSelectDate: DateModel()
-                        ..year = widget.calendarController.minSelectYear
-                        ..month = widget.calendarController.minSelectMonth
-                        ..day = widget.calendarController.minSelectDay,
-                      maxSelectDate: DateModel()
-                        ..year = widget.calendarController.maxSelectYear
-                        ..month = widget.calendarController.maxSelectMonth
-                        ..day = widget.calendarController.maxSelectDay,
-                      maxMultiSelectCount:
-                          widget.calendarController.maxMultiSelectCount,
-                      multiSelectOutOfRange:
-                          widget.calendarController.multiSelectOutOfRange,
-                      multiSelectOutOfSize:
-                          widget.calendarController.multiSelectOutOfSize,
-                      extraDataMap: widget.calendarController.extraDataMap,
+              duration: Duration(milliseconds: 500),
+              height: expand ? totalHeight : itemHeight,
+              child:
+//              expand ?
+                  Container(
+                height: totalHeight,
+                child: MonthViewPager(
+//                        selectMode: widget.calendarController.selectMode,
+//                        monthChange: (int year, int month) {
+//                          widget.calendarController.monthChange(year, month);
+//                        },
+//                        calendarSelect: (dateModel) {
+//                          widget.calendarController.selectDateModel = dateModel;
+//                          widget.calendarController.calendarSelect(dateModel);
+//                        },
+//                        monthList: widget.calendarController.monthList,
+//                        pageController: widget.calendarController.pageController,
+//                        selectedDateList:
+//                            widget.calendarController.selectedDateList,
+//                        selectDateModel:
+//                            widget.calendarController.selectDateModel,
+//                        dayWidgetBuilder:
+//                            widget.calendarController.dayWidgetBuilder,
+//                        minSelectDate: DateModel()
+//                          ..year = widget.calendarController.minSelectYear
+//                          ..month = widget.calendarController.minSelectMonth
+//                          ..day = widget.calendarController.minSelectDay,
+//                        maxSelectDate: DateModel()
+//                          ..year = widget.calendarController.maxSelectYear
+//                          ..month = widget.calendarController.maxSelectMonth
+//                          ..day = widget.calendarController.maxSelectDay,
+//                        maxMultiSelectCount:
+//                            widget.calendarController.maxMultiSelectCount,
+//                  multiSelectOutOfRange:
+//                      widget.calendarController.multiSelectOutOfRange,
+//                  multiSelectOutOfSize:
+//                      widget.calendarController.multiSelectOutOfSize,
+//                        extraDataMap: widget.calendarController.extraDataMap,
                     ),
-                  ),
-          ),
+              )
+//                  : Container(
+//                      height: itemHeight,
+//                      child: WeekViewPager(
+//                        selectMode: widget.calendarController.selectMode,
+//                        monthChange: (int year, int month) {
+//                          widget.calendarController.monthChange(year, month);
+//                        },
+//                        calendarSelect: (dateModel) {
+//                          widget.calendarController.selectDateModel = dateModel;
+//                          widget.calendarController.calendarSelect(dateModel);
+//                        },
+//                        weekList: widget.calendarController.weekList,
+//                        pageController: widget.calendarController.pageController,
+//                        selectedDateList:
+//                            widget.calendarController.selectedDateList,
+//                        selectDateModel:
+//                            widget.calendarController.selectDateModel,
+//                        dayWidgetBuilder:
+//                            widget.calendarController.dayWidgetBuilder,
+//                        minSelectDate: DateModel()
+//                          ..year = widget.calendarController.minSelectYear
+//                          ..month = widget.calendarController.minSelectMonth
+//                          ..day = widget.calendarController.minSelectDay,
+//                        maxSelectDate: DateModel()
+//                          ..year = widget.calendarController.maxSelectYear
+//                          ..month = widget.calendarController.maxSelectMonth
+//                          ..day = widget.calendarController.maxSelectDay,
+//                        maxMultiSelectCount:
+//                            widget.calendarController.maxMultiSelectCount,
+//                        multiSelectOutOfRange:
+//                            widget.calendarController.multiSelectOutOfRange,
+//                        multiSelectOutOfSize:
+//                            widget.calendarController.multiSelectOutOfSize,
+//                        extraDataMap: widget.calendarController.extraDataMap,
+//                      ),
+//                    ),
+              ),
         ],
       ),
     );

lib/widget/month_view.dart

@@ -1,23 +1,25 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_custom_calendar/CalendarProvider.dart';
+import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/constants/constants.dart';
-import 'package:flutter_custom_calendar/controller.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
 import 'package:flutter_custom_calendar/utils/date_util.dart';
+import 'package:provider/provider.dart';
 
 /**
  * 月视图，显示整个月的日子
  */
 class MonthView extends StatefulWidget {
-  OnCalendarSelect onCalendarSelectListener;
+//  OnCalendarSelect onCalendarSelectListener;
 
-  Set<DateModel> selectedDateList; //被选中的日期
-
-  DateModel selectDateModel; //当前选择项,用于单选
-
-  DayWidgetBuilder dayWidgetBuilder;
-
-  OnMultiSelectOutOfRange multiSelectOutOfRange; //多选超出指定范围
-  OnMultiSelectOutOfSize multiSelectOutOfSize; //多选超出限制个数
+//  Set<DateModel> selectedDateList; //被选中的日期
+//
+//  DateModel selectDateModel; //当前选择项,用于单选
+//
+//  DayWidgetBuilder dayWidgetBuilder;
+//
+//  OnMultiSelectOutOfRange multiSelectOutOfRange; //多选超出指定范围
+//  OnMultiSelectOutOfSize multiSelectOutOfSize; //多选超出限制个数
 
   int year;
   int month;
@@ -26,26 +28,15 @@ class MonthView extends StatefulWidget {
   DateModel minSelectDate;
   DateModel maxSelectDate;
 
-  int selectMode;
-  int maxMultiSelectCount;
-
   Map<DateTime, Object> extraDataMap; //自定义额外的数据
 
-  MonthView(
-      {@required this.year,
-      @required this.month,
-      this.day,
-      this.onCalendarSelectListener,
-      this.dayWidgetBuilder,
-      this.selectedDateList,
-      this.selectDateModel,
-      this.minSelectDate,
-      this.maxSelectDate,
-      this.selectMode,
-      this.multiSelectOutOfSize,
-      this.multiSelectOutOfRange,
-      this.maxMultiSelectCount,
-      this.extraDataMap});
+  MonthView({
+    @required this.year,
+    @required this.month,
+    this.day,
+    this.minSelectDate,
+    this.maxSelectDate,
+  });
 
   @override
   _MonthViewState createState() => _MonthViewState();
@@ -60,27 +51,17 @@ class _MonthViewState extends State<MonthView> {
   double totalHeight;
   double mainSpacing = 10;
 
-  int year;
-  int month;
-
-  DateModel selectDateModel; //当前选择项,用于单选
-
   @override
   void initState() {
     super.initState();
 
-    year = widget.year;
-    month = widget.month;
-
     items = DateUtil.initCalendarForMonthView(
-        year, month, DateTime.now(), DateTime.sunday,
+        widget.year, widget.month, DateTime.now(), DateTime.sunday,
         minSelectDate: widget.minSelectDate,
         maxSelectDate: widget.maxSelectDate,
         extraDataMap: widget.extraDataMap);
 
-    lineCount = DateUtil.getMonthViewLineCount(year, month);
-
-    selectDateModel = widget.selectDateModel;
+    lineCount = DateUtil.getMonthViewLineCount(widget.year, widget.month);
   }
 
   @override
@@ -96,67 +77,72 @@ class _MonthViewState extends State<MonthView> {
   }
 
   Widget getView() {
-    return new GridView.builder(
-        physics: NeverScrollableScrollPhysics(),
-        gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
-            crossAxisCount: 7, mainAxisSpacing: 10),
-        itemCount: 7 * lineCount,
-        itemBuilder: (context, index) {
-          DateModel dateModel = items[index];
-          //判断是否被选择
-          if (widget.selectMode == Constants.MODE_MULTI_SELECT) {
-            if (widget.selectedDateList.contains(dateModel)) {
-              dateModel.isSelected = true;
-            } else {
-              dateModel.isSelected = false;
-            }
-          } else {
-            if (selectDateModel == dateModel) {
-              dateModel.isSelected = true;
+    return Consumer<CalendarProvider>(
+        builder: (context, calendarProvider, child) {
+      CalendarConfiguration configuration =
+          calendarProvider.calendarConfiguration;
+      print(
+          "Consumer:calendarProvider.selectDateModel:${calendarProvider.selectDateModel}");
+      return new GridView.builder(
+          physics: NeverScrollableScrollPhysics(),
+          gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
+              crossAxisCount: 7, mainAxisSpacing: 10),
+          itemCount: 7 * lineCount,
+          itemBuilder: (context, index) {
+            DateModel dateModel = items[index];
+            //判断是否被选择
+            if (configuration.selectMode == Constants.MODE_MULTI_SELECT) {
+              if (calendarProvider.selectedDateList.contains(dateModel)) {
+                dateModel.isSelected = true;
+              } else {
+                dateModel.isSelected = false;
+              }
             } else {
-              dateModel.isSelected = false;
-            }
-          }
-
-          return GestureDetector(
-            onTap: () {
-              //范围外不可点击
-              if (!dateModel.isInRange) {
-                //多选回调
-                if (widget.selectMode == Constants.MODE_MULTI_SELECT) {
-                  widget.multiSelectOutOfRange();
-                }
-                return;
+              if (calendarProvider.selectDateModel == dateModel) {
+                dateModel.isSelected = true;
+              } else {
+                dateModel.isSelected = false;
               }
+            }
 
-              if (widget.selectMode == Constants.MODE_MULTI_SELECT) {
-                //多选，判断是否超过限制，超过范围
-                if (widget.selectedDateList.length ==
-                    widget.maxMultiSelectCount) {
-                  widget.multiSelectOutOfSize();
+            return GestureDetector(
+              onTap: () {
+                print("GestureDetector onTap：$dateModel");
+                //范围外不可点击
+                if (!dateModel.isInRange) {
+                  //多选回调
+                  if (configuration.selectMode == Constants.MODE_MULTI_SELECT) {
+                    configuration.multiSelectOutOfRange();
+                  }
                   return;
                 }
 
-                //多选也可以弄这些单选的代码
-                selectDateModel = dateModel;
-                widget.selectDateModel = dateModel;
-                widget.onCalendarSelectListener(dateModel);
-                setState(() {
-                  if (widget.selectedDateList.contains(dateModel)) {
-                    widget.selectedDateList.remove(dateModel);
-                  } else {
-                    widget.selectedDateList.add(dateModel);
+                if (configuration.selectMode == Constants.MODE_MULTI_SELECT) {
+                  //多选，判断是否超过限制，超过范围
+                  if (calendarProvider.selectedDateList.length ==
+                      configuration.maxMultiSelectCount) {
+                    configuration.multiSelectOutOfSize();
+                    return;
                   }
-                });
-              } else {
-                selectDateModel = dateModel;
-                widget.selectDateModel = dateModel;
-                widget.onCalendarSelectListener(dateModel);
-                setState(() {});
-              }
-            },
-            child: widget.dayWidgetBuilder(dateModel),
-          );
-        });
+
+                  //多选也可以弄这些单选的代码
+                  calendarProvider.selectDateModel = dateModel;
+                  configuration.calendarSelect(dateModel);
+                  setState(() {
+                    if (calendarProvider.selectedDateList.contains(dateModel)) {
+                      calendarProvider.selectedDateList.remove(dateModel);
+                    } else {
+                      calendarProvider.selectedDateList.add(dateModel);
+                    }
+                  });
+                } else {
+                  calendarProvider.selectDateModel = dateModel;
+                  configuration.calendarSelect(dateModel);
+                }
+              },
+              child: configuration.dayWidgetBuilder(dateModel),
+            );
+          });
+    });
   }
 }

lib/widget/month_view_pager.dart

@@ -1,44 +1,12 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_custom_calendar/controller.dart';
+import 'package:flutter_custom_calendar/CalendarProvider.dart';
+import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
 import 'package:flutter_custom_calendar/widget/month_view.dart';
+import 'package:provider/provider.dart';
 
 class MonthViewPager extends StatefulWidget {
-  final OnMonthChange monthChange;
-  final OnCalendarSelect calendarSelect;
-  final DayWidgetBuilder dayWidgetBuilder;
-  OnMultiSelectOutOfRange multiSelectOutOfRange; //多选超出指定范围
-  OnMultiSelectOutOfSize multiSelectOutOfSize; //多选超出限制个数
-
-  Set<DateModel> selectedDateList; //被选中的日期,用于多选
-  DateModel selectDateModel; //当前选择项,用于单选
-
-  final List<DateModel> monthList;
-  PageController pageController;
-
-  DateModel minSelectDate;
-  DateModel maxSelectDate;
-
-  int selectMode;
-  int maxMultiSelectCount;
-
-  Map<DateTime, Object> extraDataMap ; //自定义额外的数据
-
-  MonthViewPager(
-      {this.monthChange,
-      this.calendarSelect,
-      this.monthList,
-      this.pageController,
-      this.selectedDateList,
-      this.selectDateModel,
-      this.dayWidgetBuilder,
-      this.minSelectDate,
-      this.maxSelectDate,
-      this.selectMode,
-      this.maxMultiSelectCount,
-      this.multiSelectOutOfRange,
-      this.multiSelectOutOfSize,
-      this.extraDataMap});
+  MonthViewPager();
 
   @override
   _MonthViewPagerState createState() => _MonthViewPagerState();
@@ -50,47 +18,46 @@ class _MonthViewPagerState extends State<MonthViewPager> {
 
   @override
   Widget build(BuildContext context) {
+//    获取到当前的CalendarProvider对象,设置listen为false，不需要刷新
+    CalendarProvider calendarProvider =
+        Provider.of<CalendarProvider>(context, listen: false);
+    CalendarConfiguration configuration =
+        calendarProvider.calendarConfiguration;
+
     return Container(
       child: PageView.builder(
         onPageChanged: (position) {
           //月份的变化
-          DateModel dateModel = widget.monthList[position];
-          widget.monthChange(dateModel.year, dateModel.month);
+          DateModel dateModel = configuration.monthList[position];
+          configuration.monthChange(dateModel.year, dateModel.month);
         },
-        controller: widget.pageController,
+        controller: configuration.pageController,
         itemBuilder: (context, index) {
-          DateModel dateModel = widget.monthList[index];
+          DateModel dateModel = configuration.monthList[index];
           return new MonthView(
-            selectMode: widget.selectMode,
+//            selectMode: configuration.selectMode,
             year: dateModel.year,
             month: dateModel.month,
-            selectDateModel: widget.selectDateModel,
-            selectedDateList: widget.selectedDateList,
-            onCalendarSelectListener: widget.calendarSelect,
-            dayWidgetBuilder: widget.dayWidgetBuilder,
-            minSelectDate: widget.minSelectDate,
-            maxSelectDate: widget.maxSelectDate,
-            maxMultiSelectCount: widget.maxMultiSelectCount,
-            multiSelectOutOfRange: widget.multiSelectOutOfRange,
-            multiSelectOutOfSize: widget.multiSelectOutOfSize,
-            extraDataMap: widget.extraDataMap,
+//            selectDateModel: calendarProvider.selectDateModel,
+//            selectedDateList: calendarProvider.selectedDateList,
+//            onCalendarSelectListener: configuration.calendarSelect,
+//            dayWidgetBuilder: configuration.dayWidgetBuilder,
+            minSelectDate: DateModel.fromDateTime(DateTime(
+                configuration.minSelectYear,
+                configuration.minSelectMonth,
+                configuration.minSelectDay)),
+            maxSelectDate: DateModel.fromDateTime(DateTime(
+                configuration.maxSelectYear,
+                configuration.maxSelectMonth,
+                configuration.maxSelectDay)),
+//            maxMultiSelectCount: configuration.maxMultiSelectCount,
+//            multiSelectOutOfRange: configuration.multiSelectOutOfRange,
+//            multiSelectOutOfSize: configuration.multiSelectOutOfSize,
+//            extraDataMap: configuration.extraDataMap,
           );
         },
-        itemCount: widget.monthList.length,
+        itemCount: configuration.monthList.length,
       ),
     );
-
-//    return SliverFillViewport(
-//      delegate: SliverChildBuilderDelegate((context, index) {
-//        DateModel dateModel = widget.monthList[index];
-//        return new MonthView(
-//          year: dateModel.year,
-//          month: dateModel.month,
-//          selectDateModel: widget.selectDateModel,
-//          selectedDateList: widget.selectedDateList,
-//          onCalendarSelectListener: widget.calendarSelect,
-//        );
-//      }, childCount: widget.monthList.length),
-//    );
   }
 }