增加周视图支持，week_view_pager,先提交一部分代码

lib/constants/constants.dart

@@ -4,6 +4,10 @@ class Constants {
   static const int MODE_SINGLE_SELECT = 1;
   static const int MODE_MULTI_SELECT = 2;
 
+  //展开状态
+  static const int STATUS_EXPAND=1;//展开
+  static const int STATUS_SHRINK=2;//收缩
+
   /**
    * 一周七天
    */

lib/controller.dart

@@ -16,6 +16,10 @@ class CalendarController {
   //默认是单选,可以配置为MODE_SINGLE_SELECT，MODE_MULTI_SELECT
   int selectMode;
 
+  //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;
@@ -56,10 +60,12 @@ class CalendarController {
    * 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;
 
   CalendarController(
       {int selectMode = Constants.MODE_SINGLE_SELECT,
+      bool expandStatus = true,
       DayWidgetBuilder dayWidgetBuilder = defaultCustomDayWidget,
       WeekBarItemWidgetBuilder weekBarItemWidgetBuilder = defaultWeekBarWidget,
       int minYear = 1971,
@@ -96,6 +102,8 @@ class CalendarController {
     this.weekBarItemWidgetBuilder = weekBarItemWidgetBuilder;
     this.maxMultiSelectCount = maxMultiSelectCount;
     this.extraDataMap = extraDataMap;
+    this.expandStatus = expandStatus;
+    this.expandChanged=ValueNotifier(expandStatus);
 
     this.selectedDateList = Set();
     if (selectedDateTimeList != null && selectedDateTimeList.isNotEmpty) {
@@ -242,6 +250,17 @@ class CalendarController {
     }
     return selectDateModel;
   }
+
+  //切换展开状态
+  void toggleExpandStatus(){
+    expandChanged.value=!expandChanged.value;
+    print("toggleExpandStatus：${expandChanged.value}");
+  }
+
+  void addExpandChangeListener(){
+
+  }
+
 }
 
 /**

lib/model/date_model.dart

@@ -26,7 +26,8 @@ class DateModel {
 
   bool isInRange = false; //是否在范围内,比如可以实现在某个范围外，设置置灰的功能
   bool isSelected; //是否被选中，用来实现一些标记或者选择功能
-  bool isCanClick = true; //todo:是否可点击：设置范围外的日历不可点击，或者可以通过自定义拦截点击事件来设置true或者false
+  bool isCanClick =
+      true; //todo:是否可点击：设置范围外的日历不可点击，或者可以通过自定义拦截点击事件来设置true或者false
 
   @override
   String toString() {
@@ -59,4 +60,15 @@ class DateModel {
 
   @override
   int get hashCode => year.hashCode ^ month.hashCode ^ day.hashCode;
+
+  //是否是同一天
+  bool isSameWith(DateModel dateModel) {
+    return year == dateModel.year &&
+        month == dateModel.month &&
+        day == dateModel.day;
+  }
+
+
+
+
 }

lib/utils/date_util.dart

@@ -172,4 +172,30 @@ class DateUtil {
     print("$year年$month月:有${((preIndex + monthDayCount) / 7).toInt() + 1}行");
     return ((preIndex + monthDayCount) / 7).toInt() + 1;
   }
+
+  /**
+   * 获取本周的7个item
+   */
+  static List<DateModel> initCalendarForWeekView(
+      int year, int month, DateTime currentDate, int weekStart,
+      {DateModel minSelectDate,
+      DateModel maxSelectDate,
+      Map<DateTime, Object> extraDataMap}) {
+    List<DateModel> items = List();
+
+    int weekDay = currentDate.weekday;
+
+    //计算本周的第一天
+    DateTime firstDayOfWeek = currentDate.add(Duration(days: -weekDay));
+
+    for (int i = 1; i <= 7; i++) {
+      DateModel dateModel =
+          DateModel.fromDateTime(firstDayOfWeek.add(Duration(days: i)));
+      items.add(dateModel);
+    }
+
+    print("items.toString():${items.toString()}");
+
+    return items;
+  }
 }

lib/widget/calendar_view.dart

@@ -3,7 +3,7 @@ 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';
 
 /**
  * 暂时默认是周一开始的
@@ -21,12 +21,27 @@ class CalendarViewWidget extends StatefulWidget {
   _CalendarViewWidgetState createState() => _CalendarViewWidgetState();
 }
 
-class _CalendarViewWidgetState extends State<CalendarViewWidget> {
+class _CalendarViewWidgetState extends State<CalendarViewWidget>
+    with SingleTickerProviderStateMixin {
   double itemHeight;
   double totalHeight;
 
+  bool expand = true;
+
+  AnimationController _animationController;
+
   @override
-  void initState() {}
+  void initState() {
+    _animationController =
+        AnimationController(duration: Duration(milliseconds: 200), vsync: this);
+
+    widget.calendarController.expandChanged.addListener(() {
+      print("_CalendarViewWidgetState:$expand");
+      setState(() {
+        expand = !expand;
+      });
+    });
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -42,38 +57,82 @@ class _CalendarViewWidgetState extends State<CalendarViewWidget> {
            * 利用const，避免每次setState都会刷新到这顶部的view
            */
           widget.calendarController.weekBarItemWidgetBuilder(),
-          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,
-            ),
+          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,
+                    ),
+                  ),
           ),
         ],
       ),

lib/widget/week_view.dart

@@ -1,31 +1,132 @@
 import 'package:flutter/material.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';
 
 /**
  * 周视图，只显示本周的日子
  */
 class WeekView extends StatefulWidget {
+  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
+
+  int year;
+  int month;
+  int day;
+
+  DateModel minSelectDate;
+  DateModel maxSelectDate;
+
+  int selectMode;
+  int maxMultiSelectCount;
+
+  Map<DateTime, Object> extraDataMap; //自定义额外的数据
+
+  WeekView(
+      {@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});
+
   @override
   _WeekViewState createState() => _WeekViewState();
 }
 
 class _WeekViewState extends State<WeekView> {
+  List<DateModel> items;
+  DateModel selectDateModel; //当前选择项,用于单选
+
+  @override
+  void initState() {
+    super.initState();
+    items=DateUtil.initCalendarForWeekView(2019, 9, DateTime.now(), 0);
+
+  }
+
   @override
   Widget build(BuildContext context) {
-//    DateTime dateTime = DateTime.now();
-//
-//    print(dateTime);
-//
-//    print(dateTime.subtract(Duration(days: 1)));
-//
-//    var berlinWallFell = new DateTime(1989, DateTime.november, 9);
-//    var dDay = new DateTime(1944, DateTime.june, 6);
-//    Duration difference = berlinWallFell.difference(dDay);
-//    print(difference.inDays);
-
-    print(DateUtil.initCalendarForMonthView(
-        2019, 12, DateTime.now(), DateTime.sunday));
-
-    return Container();
+
+
+    return new GridView.builder(
+        physics: NeverScrollableScrollPhysics(),
+        gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
+            crossAxisCount: 7, mainAxisSpacing: 10),
+        itemCount: 7,
+        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;
+            } 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 (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;
+                }
+
+                //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);
+                  }
+                });
+              } else {
+                selectDateModel = dateModel;
+                widget.selectDateModel = dateModel;
+                widget.onCalendarSelectListener(dateModel);
+                setState(() {});
+              }
+            },
+            child: widget.dayWidgetBuilder(dateModel),
+          );
+        });
   }
 }

lib/widget/week_view_pager.dart

@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_custom_calendar/controller.dart';
+import 'package:flutter_custom_calendar/model/date_model.dart';
+import 'package:flutter_custom_calendar/widget/week_view.dart';
+
+class WeekViewPager 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> weekList;
+  PageController pageController;
+
+  DateModel minSelectDate;
+  DateModel maxSelectDate;
+
+  int selectMode;
+  int maxMultiSelectCount;
+
+  Map<DateTime, Object> extraDataMap; //自定义额外的数据
+
+  WeekViewPager(
+      {this.monthChange,
+      this.calendarSelect,
+      this.weekList,
+      this.pageController,
+      this.selectedDateList,
+      this.selectDateModel,
+      this.dayWidgetBuilder,
+      this.minSelectDate,
+      this.maxSelectDate,
+      this.selectMode,
+      this.maxMultiSelectCount,
+      this.multiSelectOutOfRange,
+      this.multiSelectOutOfSize,
+      this.extraDataMap});
+
+  @override
+  _WeekViewPagerState createState() => _WeekViewPagerState();
+}
+
+class _WeekViewPagerState extends State<WeekViewPager> {
+
+  int lastMonth;//上一个月份
+
+  @override
+  void initState() {
+//      lastMonth=
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      child: PageView.builder(
+        onPageChanged: (position) {
+          //月份的变化
+          DateModel dateModel = widget.weekList[position];
+          widget.monthChange(dateModel.year, dateModel.month);
+        },
+        controller: widget.pageController,
+        itemBuilder: (context, index) {
+          DateModel dateModel = widget.weekList[index];
+          return new WeekView(
+            selectMode: widget.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,
+          );
+        },
+        itemCount: widget.weekList.length,
+      ),
+    );
+  }
+}