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
周视图和月视图，联动
增加日志输出类LogUtil，方便查看调试
增加example例子
性能优化

README.md

@@ -20,7 +20,7 @@ Flutter上的一个日历控件，可以定制成自己想要的样子。
 
 ## 近期修改
 ### [1.0.0] - 2019/9/22
-* 重构日历的代码
+* 重构日历的代码,进行性能优化
 * 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 
 * 实现周视图，并实现周视图和月视图之间的联动
@@ -55,8 +55,9 @@ CalendarViewWidget({@required this.calendarController, this.boxDecoration});
 * boxDecoration用来配置整体的背景
 * 利用CalendarController来配置一些数据，并且可以通过CalendarController进行一些操作或者事件监听，比如滚动到下一个月，获取当前被选中的Item等等。
 
+## 配置CalendarController
+
 下面是CalendarController中一些支持自定义配置的属性。不配置的话，会有对应的默认值。
-配置都是在controller里面进行配置的（。。考虑到之前版本，所以才这样搞）。
 
 个人觉得，配置的含义主要包括了3个方面的配置。
 * 一个是显示日历所需要的相关数据，
@@ -67,6 +68,7 @@ CalendarViewWidget({@required this.calendarController, this.boxDecoration});
       //构造函数
       CalendarController(
       {int selectMode = Constants.MODE_SINGLE_SELECT,
+      bool expandStatus = true,
       DayWidgetBuilder dayWidgetBuilder = defaultCustomDayWidget,
       WeekBarItemWidgetBuilder weekBarItemWidgetBuilder = defaultWeekBarWidget,
       int minYear = 1971,
@@ -84,11 +86,13 @@ CalendarViewWidget({@required this.calendarController, this.boxDecoration});
       Set<DateTime> selectedDateTimeList = EMPTY_SET,
       DateModel selectDateModel,
       int maxMultiSelectCount = 9999,
-      Map<DateTime, Object> extraDataMap = EMPTY_MAP})
+      double verticalSpacing = 10,
+      bool enableExpand = true,
+      Map<DateModel, Object> extraDataMap = EMPTY_MAP})
 
 ```
 
-数据方面的配置
+### 数据方面的配置
 
 属性 | 含义 | 默认值 
 :-: | :-: | :-: 
@@ -111,7 +115,7 @@ maxMultiSelectCount | 多选，最多选多少个| hhh
 extraDataMap | 自定义额外的数据| 默认为空Map，Map<DateTime, Object> extraDataMap = new Map()
 
 
-UI绘制相关的配置
+### UI绘制相关的配置
 
 属性 | 含义 | 默认值 
 :-: | :-: | :-: 
@@ -119,23 +123,23 @@ weekBarItemWidgetBuilder | 创建顶部的weekbar | 默认样式
 dayWidgetBuilder | 创建日历item | 默认样式
 
 
-事件监听的配置
+### 事件监听的配置
 
 方法 | 含义 | 默认值 
 :-: | :-: | :-: 
-void addMonthChangeListener(OnMonthChange listener) | 月份切换事件 | 默认为空
-void addOnCalendarSelectListener(OnCalendarSelect listener) | 点击选择事件 | 默认为空
-void addOnMultiSelectOutOfRangeListener(OnMultiSelectOutOfRange listener) | 多选超出指定范围 | 默认为空
-void addOnMultiSelectOutOfSizeListener(OnMultiSelectOutOfSize listener) | 多选超出限制个数 | 默认为空
+void addMonthChangeListener(OnMonthChange listener) | 月份切换事件 | 
+void addOnCalendarSelectListener(OnCalendarSelect listener) | 点击选择事件 | 
+void addOnMultiSelectOutOfRangeListener(OnMultiSelectOutOfRange listener) | 多选超出指定范围 | 
+void addOnMultiSelectOutOfSizeListener(OnMultiSelectOutOfSize listener) | 多选超出限制个数 | 
 void addExpandChangeListener(ValueChanged<bool> expandChange)|监听日历的展开收缩状态|
 
-###  利用controller来控制日历的切换，支持配置动画
+##  利用controller来控制日历的切换，支持配置动画
 
 方法 | 含义 | 默认值 
 :-: | :-: | :-: 
 Future<bool> previousPage()|滑动到上一个页面，会自动根据当前的展开状态，滑动到上一个月或者上一个星期。如果已经在第一个页面，没有上一个页面，就会返回false，其他情况返回true| 
 Future<bool> nextPage()|滑动到下一个页面，会自动根据当前的展开状态，滑动到下一个月或者下一个星期。如果已经在最后一个页面，没有下一个页面，就会返回false，其他情况返回true|
-void moveToCalendar(int year, int month, int day, {bool needAnimation = false,Duration duration = const Duration(milliseconds: 500),Curve curve = Curves.ease}) | 到指定日期 | 默认为空
+void moveToCalendar(int year, int month, int day, {bool needAnimation = false,Duration duration = const Duration(milliseconds: 500),Curve curve = Curves.ease}) | 到指定日期 | 
 void moveToNextYear()|切换到下一年|
 void moveToPreviousYear()|切换到上一年|    
 void moveToNextMonth()|切换到下一个月份|
@@ -143,7 +147,7 @@ void moveToPreviousMonth()|切换到上一个月份|
 void toggleExpandStatus()|切换展开状态|
 
 
-### 利用controller来获取日历的一些数据信息
+## 利用controller来获取日历的一些数据信息
 
 方法 | 含义 | 默认值 
 :-: | :-: | :-: 
@@ -152,7 +156,7 @@ Set<DateModel> getMultiSelectCalendar()|获取被选中的日期,多选|
 DateModel getSingleSelectCalendar()|获取被选中的日期，单选|
 
 
-### 如何自定义UI
+## 如何自定义UI
 
 包括自定义WeekBar、自定义日历Item，默认使用的都是DefaultXXXWidget。
 
@@ -271,7 +275,7 @@ class DefaultCustomDayWidget extends BaseCustomDayWidget {
 
 
 
-### DateModel实体类
+## DateModel实体类
 日历所用的日期的实体类DateModel，有下面这些属性。可以在自定义绘制DayWidget的时候，根据相应的属性，进行判断后，绘制相应的UI。
 
 属性|含义|类型|默认值
@@ -286,12 +290,12 @@ lunarString|农历字符串|String|
 solarTerm|24节气|String|
 gregorianFestival|gregorianFestival|String|
 traditionFestival|传统农历节日|String|
-isCurrentDay|是否是今天|bool|
-isLeapYear|是否是闰年|bool|
-isWeekend|是否是周末|bool|
+isCurrentDay|是否是今天|bool|false
+isLeapYear|是否是闰年|bool|false
+isWeekend|是否是周末|bool|false
 isInRange|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|false
 isSelected|是否被选中，用来实现一些标记或者选择功能|bool|false
-extraData|自定义的额外数据|Object
+extraData|自定义的额外数据|Object|默认为空
 
 
 方法|含义|

example/lib/default_style_page.dart

@@ -23,8 +23,12 @@ class _DefaultStylePageState extends State<DefaultStylePage> {
 
   @override
   void initState() {
+    DateTime now = DateTime.now();
     controller = new CalendarController(
-        minYear: 2019, minYearMonth: 8, maxYear: 2019, maxYearMonth: 9);
+        minYear: now.year,
+        minYearMonth: now.month - 2,
+        maxYear: now.year,
+        maxYearMonth: now.month + 1);
 
     controller.addMonthChangeListener(
       (year, month) {

example/lib/main.dart

@@ -1,17 +1,23 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
 import 'custom_sign_page.dart';
 import 'custom_style_page.dart';
 import 'default_style_page.dart';
 import 'multi_select_style_page.dart';
 import 'progress_style_page.dart';
 
-void main() => runApp(MyApp());
+void main(){
+//  debugProfileBuildsEnabled=true;
+//  debugProfilePaintsEnabled=true;
+  runApp(MyApp());
+}
 
 class MyApp extends StatelessWidget {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
+//        checkerboardOffscreenLayers: true, // 使用了saveLayer的图形会显示为棋盘格式并随着页面刷新而闪烁
         routes: <String, WidgetBuilder>{
           "/default": (context) => DefaultStylePage(
                 title: "默认风格+单选",

example/pubspec.lock

@@ -1,6 +1,20 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.10"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.5.2"
   async:
     dependency: transitive
     description:
@@ -29,6 +43,20 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.14.11"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.3"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -53,6 +81,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.4"
   matcher:
     dependency: transitive
     description:
@@ -81,6 +116,13 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.0+1"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.4.0"
   provider:
     dependency: transitive
     description:
@@ -163,5 +205,12 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.0.8"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.5.0"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.4.0 <3.0.0"

lib/cache_data.dart

@@ -0,0 +1,26 @@
+import 'package:flutter_custom_calendar/model/date_model.dart';
+
+/**
+ * 保存一些缓存数据，不用再次去计算日子
+ */
+class CacheData {
+  //私有构造函数
+  CacheData._();
+
+  static CacheData _instance;
+
+  static CacheData get instance => _instance;
+
+  Map<DateModel, List<DateModel>> monthListCache = Map();
+  Map<DateModel, List<DateModel>> weekListCache = Map();
+
+  static CacheData getInstance() {
+    if (_instance == null) {
+      _instance = new CacheData._();
+    }
+    return _instance;
+  }
+}
+
+
+

lib/calendar_provider.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
 import 'package:flutter_custom_calendar/utils/LogUtil.dart';
+import 'package:flutter_custom_calendar/utils/date_util.dart';
 import 'package:flutter_custom_calendar/widget/month_view.dart';
 
 /**
@@ -12,8 +13,17 @@ import 'package:flutter_custom_calendar/widget/month_view.dart';
 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 lastClickDateModel; //保存最后点击的一个日期，用于周视图与月视图之间的切换和同步
-  MultiSelectItemContainerState lastClickItemState;
+  ItemContainerState lastClickItemState;
+
+  DateModel _lastClickDateModel;
+
+  DateModel get lastClickDateModel =>
+      _lastClickDateModel; //保存最后点击的一个日期，用于周视图与月视图之间的切换和同步
+
+  set lastClickDateModel(DateModel value) {
+    _lastClickDateModel = value;
+    print("lastClickDateModel:$lastClickDateModel");
+  }
 
   DateModel get selectDateModel => _selectDateModel;
 
@@ -22,7 +32,49 @@ class CalendarProvider extends ChangeNotifier {
     LogUtil.log(
         TAG: this.runtimeType,
         message: "selectDateModel change:${selectDateModel}");
-    notifyListeners();
+//    notifyListeners();
+  }
+
+  //根据lastClickDateModel，去计算需要展示的星期视图的初始index
+  int get weekPageIndex {
+    //计算当前星期视图的index
+    DateModel dateModel = lastClickDateModel;
+    DateTime firstWeek = calendarConfiguration.weekList[0].getDateTime();
+    int index = 0;
+    for (int i = 0; i < calendarConfiguration.weekList.length; i++) {
+      DateTime nextWeek = firstWeek.add(Duration(days: 7));
+      if (dateModel.getDateTime().isBefore(nextWeek)) {
+        index = i;
+        break;
+      } else {
+        firstWeek = nextWeek;
+        index++;
+      }
+    }
+
+    print("lastClickDateModel:$lastClickDateModel,weekPageIndex:$index");
+    return index;
+  }
+
+  //根据lastClickDateModel，去计算需要展示的月视图的index
+  int get monthPageIndex {
+    //计算当前月视图的index
+    DateModel dateModel = lastClickDateModel;
+    int index = 0;
+    for (int i = 0; i < calendarConfiguration.monthList.length - 1; i++) {
+      DateTime preMonth = calendarConfiguration.monthList[i].getDateTime();
+      DateTime nextMonth = calendarConfiguration.monthList[i + 1].getDateTime();
+      if (!dateModel.getDateTime().isBefore(preMonth) &&
+          !dateModel.getDateTime().isAfter(nextMonth)) {
+        index = i;
+        break;
+      } else {
+        index++;
+      }
+    }
+
+    print("lastClickDateModel:$lastClickDateModel,monthPageIndex:$index");
+    return index + 1;
   }
 
   ValueNotifier<bool> expandStatus = ValueNotifier(true); //当前展开状态
@@ -43,7 +95,15 @@ class CalendarProvider extends ChangeNotifier {
     //lastClickDateModel，默认是选中的item，如果为空的话，默认是当前的时间
     this.lastClickDateModel = selectDateModel != null
         ? selectDateModel
-        : DateModel.fromDateTime(DateTime.now());
+        : DateModel.fromDateTime(DateTime.now())
+      ..day = 15;
+
+//    expandStatus.addListener(() {
+//      print("1111");
+//      if (expandStatus.value == false) {
+//        calendarConfiguration.weekController.jumpToPage(weekPageIndex);
+//      }
+//    });
   }
 
   //退出的时候，清除数据

lib/configuration.dart

@@ -9,8 +9,11 @@ class CalendarConfiguration {
   //默认是单选,可以配置为MODE_SINGLE_SELECT，MODE_MULTI_SELECT
   int selectMode;
 
+  //仅展示月视图，仅展示周视图，支持月视图和周视图切换
+  int showMode;
+
   bool defaultExpandStatus; //展开状态,true代表是月视图，false代表是周视图
-  bool enableExpand; //是否可以展开
+  bool enableExpand; //是否可以展开,true只展示月视图，false仅展示周视图，
 
   //日历显示的最小年份和最大年份
   int minYear;
@@ -42,6 +45,7 @@ class CalendarConfiguration {
    */
   double verticalSpacing; //日历item之间的竖直方向间距，默认10
   BoxDecoration boxDecoration; //整体的背景设置
+  double itemSize; //默认是屏幕宽度/7
 
   //支持自定义绘制
   DayWidgetBuilder dayWidgetBuilder; //创建日历item
@@ -61,7 +65,7 @@ class CalendarConfiguration {
    */
   List<DateModel> monthList = new List(); //月份list
   List<DateModel> weekList = new List(); //星期list
-  PageController pageController; //月份的controller
+  PageController monthController; //月份的controller
   PageController weekController; //星期的controller
 
   CalendarConfiguration(
@@ -83,9 +87,10 @@ class CalendarConfiguration {
       this.extraDataMap,
       this.monthList,
       this.weekList,
-      this.pageController,
+      this.monthController,
       this.weekController,
       this.verticalSpacing,
+      this.itemSize,
       this.enableExpand,
       bool defaultExpandStatus}) {
     this.defaultExpandStatus = defaultExpandStatus;
@@ -93,6 +98,6 @@ class CalendarConfiguration {
 
   @override
   String toString() {
-    return 'CalendarConfiguration{selectMode: $selectMode, expandStatus: $defaultExpandStatus, 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}';
+    return 'CalendarConfiguration{selectMode: $selectMode, expandStatus: $defaultExpandStatus, 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, monthController: $monthController, weekController: $weekController}';
   }
 }

lib/controller.dart

@@ -84,7 +84,7 @@ class CalendarController {
     }
 
     //初始化pageController,initialPage默认是当前时间对于的页面
-    int initialPage;
+    int initialPage = 0;
     int nowMonthIndex = 0;
     monthList.clear();
     for (int i = minYear; i <= maxYear; i++) {
@@ -111,7 +111,8 @@ class CalendarController {
         nowMonthIndex++;
       }
     }
-    this.monthController = new PageController(initialPage: initialPage);
+    this.monthController =
+        new PageController(initialPage: initialPage, keepPage: true);
     LogUtil.log(
         TAG: this.runtimeType,
         message: "start:${DateModel.fromDateTime(DateTime(
@@ -153,7 +154,7 @@ class CalendarController {
 
     calendarConfiguration.monthList = monthList;
     calendarConfiguration.weekList = weekList;
-    calendarConfiguration.pageController = monthController;
+    calendarConfiguration.monthController = monthController;
     calendarConfiguration.weekController = weekController;
     calendarConfiguration.dayWidgetBuilder = dayWidgetBuilder;
     calendarConfiguration.weekBarItemWidgetBuilder = weekBarItemWidgetBuilder;
@@ -200,22 +201,31 @@ class CalendarController {
   Future<bool> previousPage() async {
     if (calendarProvider.expandStatus.value == true) {
       //月视图
-      int currentIndex = monthController.page.toInt();
+      int currentIndex =
+          calendarProvider.calendarConfiguration.monthController.page.toInt();
       if (currentIndex == 0) {
         return false;
       } else {
-        monthController.previousPage(
-            duration: DEFAULT_DURATION, curve: Curves.ease);
+        calendarProvider.calendarConfiguration.monthController
+            .previousPage(duration: DEFAULT_DURATION, curve: Curves.ease);
+        calendarProvider.calendarConfiguration.monthChange(
+            monthList[currentIndex].year, monthList[currentIndex].month);
+        DateModel temp = new DateModel();
+        temp.year = monthList[currentIndex].year;
+        temp.month = monthList[currentIndex].month;
+        temp.day = monthList[currentIndex].day + 14;
+        calendarProvider.lastClickDateModel = temp;
         return true;
       }
     } else {
       //周视图
-      int currentIndex = weekController.page.toInt();
+      int currentIndex =
+          calendarProvider.calendarConfiguration.weekController.page.toInt();
       if (currentIndex == 0) {
         return false;
       } else {
-        weekController.previousPage(
-            duration: DEFAULT_DURATION, curve: Curves.ease);
+        calendarProvider.calendarConfiguration.weekController
+            .previousPage(duration: DEFAULT_DURATION, curve: Curves.ease);
         return true;
       }
     }
@@ -229,21 +239,31 @@ class CalendarController {
   Future<bool> nextPage() async {
     if (calendarProvider.expandStatus.value == true) {
       //月视图
-      int currentIndex = monthController.page.toInt();
+      int currentIndex =
+          calendarProvider.calendarConfiguration.monthController.page.toInt();
       if (monthList.length - 1 == currentIndex) {
         return false;
       } else {
-        monthController.nextPage(
-            duration: DEFAULT_DURATION, curve: Curves.ease);
+        calendarProvider.calendarConfiguration.monthController
+            .nextPage(duration: DEFAULT_DURATION, curve: Curves.ease);
+        calendarProvider.calendarConfiguration.monthChange(
+            monthList[currentIndex].year, monthList[currentIndex].month);
+        DateModel temp = new DateModel();
+        temp.year = monthList[currentIndex].year;
+        temp.month = monthList[currentIndex].month;
+        temp.day = monthList[currentIndex].day + 14;
+        calendarProvider.lastClickDateModel = temp;
         return true;
       }
     } else {
       //周视图
-      int currentIndex = weekController.page.toInt();
+      int currentIndex =
+          calendarProvider.calendarConfiguration.weekController.page.toInt();
       if (weekList.length - 1 == currentIndex) {
         return false;
       } else {
-        weekController.nextPage(duration: DEFAULT_DURATION, curve: Curves.ease);
+        calendarProvider.calendarConfiguration.weekController
+            .nextPage(duration: DEFAULT_DURATION, curve: Curves.ease);
         return true;
       }
     }
@@ -261,14 +281,16 @@ class CalendarController {
       if (targetPage == -1) {
         return;
       }
-      if (monthController.hasClients == false) {
+      if (calendarProvider.calendarConfiguration.monthController.hasClients ==
+          false) {
         return;
       }
       if (needAnimation) {
-        monthController.animateToPage(targetPage,
-            duration: duration, curve: curve);
+        calendarProvider.calendarConfiguration.monthController
+            .animateToPage(targetPage, duration: duration, curve: curve);
       } else {
-        monthController.jumpToPage(targetPage);
+        calendarProvider.calendarConfiguration.monthController
+            .jumpToPage(targetPage);
       }
     } else {
       DateModel dateModel = DateModel.fromDateTime(DateTime(year, month, 1));
@@ -282,14 +304,16 @@ class CalendarController {
           return;
         }
       }
-      if (weekController.hasClients == false) {
+      if (calendarProvider.calendarConfiguration.weekController.hasClients ==
+          false) {
         return;
       }
       if (needAnimation) {
-        weekController.animateToPage(targetPage,
-            duration: duration, curve: curve);
+        calendarProvider.calendarConfiguration.weekController
+            .animateToPage(targetPage, duration: duration, curve: curve);
       } else {
-        weekController.jumpToPage(targetPage);
+        calendarProvider.calendarConfiguration.weekController
+            .jumpToPage(targetPage);
       }
     }
   }
@@ -299,8 +323,11 @@ class CalendarController {
       {bool needAnimation = false,
       Duration duration = const Duration(milliseconds: 500),
       Curve curve = Curves.ease}) {
-    DateTime targetDateTime =
-        monthList[monthController.page.toInt() + 12].getDateTime();
+    DateTime targetDateTime = monthList[calendarProvider
+                .calendarConfiguration.monthController.page
+                .toInt() +
+            12]
+        .getDateTime();
     moveToCalendar(
         targetDateTime.year, targetDateTime.month, targetDateTime.day,
         needAnimation: needAnimation, duration: duration, curve: curve);
@@ -311,8 +338,11 @@ class CalendarController {
       {bool needAnimation = false,
       Duration duration = const Duration(milliseconds: 500),
       Curve curve = Curves.ease}) {
-    DateTime targetDateTime =
-        monthList[monthController.page.toInt() - 12].getDateTime();
+    DateTime targetDateTime = monthList[calendarProvider
+                .calendarConfiguration.monthController.page
+                .toInt() -
+            12]
+        .getDateTime();
     moveToCalendar(
         targetDateTime.year, targetDateTime.month, targetDateTime.day,
         needAnimation: needAnimation, duration: duration, curve: curve);
@@ -325,22 +355,33 @@ class CalendarController {
       Curve curve = Curves.ease}) {
     //    如果当前显示的是周视图的话，需要计算出第一个月的index后，调用weekController
     if (calendarProvider.expandStatus.value == false) {
-      int currentMonth = weekList[weekController.page.toInt()].month;
-      for (int i = weekController.page.toInt(); i < weekList.length; i++) {
+      int currentMonth = weekList[calendarProvider
+              .calendarConfiguration.weekController.page
+              .toInt()]
+          .month;
+      for (int i = calendarProvider.calendarConfiguration.weekController.page
+              .toInt();
+          i < weekList.length;
+          i++) {
         if (weekList[i].month != currentMonth) {
-          weekController.jumpToPage(i);
+          calendarProvider.calendarConfiguration.weekController.jumpToPage(i);
           break;
         }
       }
       return;
     }
 
-    if ((monthController.page.toInt() + 1) >= monthList.length) {
+    if ((calendarProvider.calendarConfiguration.monthController.page.toInt() +
+            1) >=
+        monthList.length) {
       LogUtil.log(TAG: this.runtimeType, message: "moveToNextMonth：当前是最后一个月份");
       return;
     }
-    DateTime targetDateTime =
-        monthList[monthController.page.toInt() + 1].getDateTime();
+    DateTime targetDateTime = monthList[calendarProvider
+                .calendarConfiguration.monthController.page
+                .toInt() +
+            1]
+        .getDateTime();
     moveToCalendar(
         targetDateTime.year, targetDateTime.month, targetDateTime.day,
         needAnimation: needAnimation, duration: duration, curve: curve);
@@ -354,25 +395,32 @@ class CalendarController {
     //    如果当前显示的是周视图的话，需要计算出第一个月的index后，调用weekController
     if (calendarProvider.expandStatus.value == false) {
       int currentMonth = weekList[weekController.page.toInt()].month;
-      for (int i = weekController.page.toInt(); i >= 0; i--) {
+      for (int i = calendarProvider.calendarConfiguration.weekController.page
+              .toInt();
+          i >= 0;
+          i--) {
         if (weekList[i].month != currentMonth &&
             weekList[i].isAfter(DateModel.fromDateTime(DateTime(
                 calendarConfiguration.minYear,
                 calendarConfiguration.minYearMonth)))) {
-          weekController.jumpToPage(i);
+          calendarProvider.calendarConfiguration.weekController.jumpToPage(i);
           break;
         }
       }
       return;
     }
 
-    if ((monthController.page.toInt()) == 0) {
+    if ((calendarProvider.calendarConfiguration.monthController.page.toInt()) ==
+        0) {
       LogUtil.log(
           TAG: this.runtimeType, message: "moveToPreviousMonth：当前是第一个月份");
       return;
     }
-    DateTime targetDateTime =
-        monthList[monthController.page.toInt() - 1].getDateTime();
+    DateTime targetDateTime = monthList[calendarProvider
+                .calendarConfiguration.monthController.page
+                .toInt() -
+            1]
+        .getDateTime();
     moveToCalendar(
         targetDateTime.year, targetDateTime.month, targetDateTime.day,
         needAnimation: needAnimation, duration: duration, curve: curve);
@@ -398,7 +446,7 @@ class CalendarController {
  * 默认的weekBar
  */
 Widget defaultWeekBarWidget() {
-  return DefaultWeekBar();
+  return const DefaultWeekBar();
 }
 
 /**

lib/model/date_model.dart

@@ -11,6 +11,13 @@ class DateModel {
 
   List<int> lunar = List(3);
 
+//  List<int> get lunar {
+//    if (lunar?.isNotEmpty == false) {
+//      return lunar;
+//    }
+////    return LunarUtil.solarToLunar(year, month, day);
+//  }
+
   //农历字符串
   String get lunarString {
     if (solarTerm.isNotEmpty) {

lib/utils/date_util.dart

@@ -1,3 +1,4 @@
+import 'dart:developer';
 import 'dart:math';
 
 import 'package:flutter_custom_calendar/model/date_model.dart';
@@ -114,6 +115,7 @@ class DateUtil {
       {DateModel minSelectDate,
       DateModel maxSelectDate,
       Map<DateModel, Object> extraDataMap}) {
+    print('initCalendarForMonthView start');
     weekStart = DateTime.monday;
     //获取月视图其实偏移量
     int mPreDiff = getIndexOfFirstDayInMonth(new DateTime(year, month));
@@ -125,6 +127,7 @@ class DateUtil {
         message:
             "initCalendarForMonthView:$year年$month月,有$monthDayCount天,第一天的index为${mPreDiff}");
 
+
     List<DateModel> result = new List();
 
     int size = 42;
@@ -162,7 +165,7 @@ class DateUtil {
         dateModel.isInRange = false;
       }
       //将自定义额外的数据，存储到相应的model中
-      if (extraDataMap != null && extraDataMap.isNotEmpty) {
+      if (extraDataMap?.isNotEmpty == true) {
         if (extraDataMap.containsKey(dateModel)) {
           dateModel.extraData = extraDataMap[dateModel];
         }
@@ -171,6 +174,8 @@ class DateUtil {
       result.add(dateModel);
     }
 
+    print('initCalendarForMonthView end');
+
     return result;
   }
 
@@ -200,7 +205,6 @@ class DateUtil {
       {DateModel minSelectDate,
       DateModel maxSelectDate,
       Map<DateModel, Object> extraDataMap}) {
-    LogUtil.log(TAG: "DateUtil", message: "initCalendarForWeekView");
     List<DateModel> items = List();
 
     int weekDay = currentDate.weekday;
@@ -226,7 +230,7 @@ class DateUtil {
       }
 
       //将自定义额外的数据，存储到相应的model中
-      if (extraDataMap != null && extraDataMap.isNotEmpty) {
+      if (extraDataMap?.isNotEmpty == true) {
         if (extraDataMap.containsKey(dateModel)) {
           dateModel.extraData = extraDataMap[dateModel];
         }

lib/widget/base_day_view.dart

@@ -6,9 +6,9 @@ import 'package:flutter_custom_calendar/model/date_model.dart';
  * 通过canvas自定义item，只需实现相关的方法就可以
  */
 abstract class BaseCustomDayWidget extends StatelessWidget {
-  DateModel dateModel;
+  final DateModel dateModel;
 
-  BaseCustomDayWidget(
+  const BaseCustomDayWidget(
     this.dateModel,
   );
 

lib/widget/calendar_view.dart

@@ -1,8 +1,10 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_custom_calendar/calendar_provider.dart';
 import 'package:flutter_custom_calendar/controller.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
 import 'package:flutter_custom_calendar/utils/LogUtil.dart';
+import 'package:flutter_custom_calendar/utils/date_util.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';
@@ -66,16 +68,41 @@ class CalendarContainerState extends State<CalendarContainer>
 
   CalendarProvider calendarProvider;
 
+  var state = CrossFadeState.showFirst;
+
+  List<Widget> widgets;
+
+  int index = 0;
+
   @override
   void initState() {
     calendarProvider = Provider.of<CalendarProvider>(context, listen: false);
     expand = calendarProvider.expandStatus.value;
 
+    widgets = [
+      const MonthViewPager(),
+      const WeekViewPager(),
+    ];
+
     //如果需要视图切换的话，才需要添加监听，不然不需要监听变化
     if (calendarProvider.calendarConfiguration.enableExpand == true) {
       calendarProvider.expandStatus.addListener(() {
         setState(() {
-          expand = !expand;
+          expand = calendarProvider.expandStatus.value;
+          state = (state == CrossFadeState.showSecond
+              ? CrossFadeState.showFirst
+              : CrossFadeState.showSecond);
+          if (expand) {
+            index = 0;
+            //周视图切换到月视图
+            calendarProvider.calendarConfiguration.weekController
+                .jumpToPage(calendarProvider.monthPageIndex);
+          } else {
+            index = 1;
+            //月视图切换到周视图
+            calendarProvider.calendarConfiguration.weekController
+                .jumpToPage(calendarProvider.weekPageIndex);
+          }
         });
       });
     }
@@ -90,28 +117,60 @@ class CalendarContainerState extends State<CalendarContainer>
   Widget build(BuildContext context) {
     LogUtil.log(TAG: this.runtimeType, message: "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;
+    itemHeight = calendarProvider.calendarConfiguration.itemSize ??
+        MediaQuery.of(context).size.width / 7;
     totalHeight = itemHeight * 6 + 10 * (6 - 1);
+//    return Container(
+//      child: new Column(
+//        children: <Widget>[
+//          /**
+//           * 利用const，避免每次setState都会刷新到这顶部的view
+//           */
+//          calendarProvider.calendarConfiguration.weekBarItemWidgetBuilder(),
+//          AnimatedContainer(
+//            duration: Duration(milliseconds: 200),
+//            width: itemHeight * 7,
+//            height: expand ? totalHeight : itemHeight,
+//            child: expand
+//                ? Container(
+//                    height: totalHeight,
+//                    child: MonthViewPager(),
+//                  )
+//                : Container(
+//                    height: itemHeight,
+//                    child: WeekViewPager(),
+//                  ),
+//          ),
+//        ],
+//      ),
+//    );
+
+//    return Container(
+//      child: AnimatedCrossFade(
+//          firstChild: Container(height: totalHeight, child: MonthViewPager()),
+//          secondChild: Container(height: itemHeight, child: WeekViewPager()),
+//          crossFadeState: state,
+//          duration: Duration(milliseconds: 500)),
+//    );
+
     return Container(
+      width: itemHeight * 7,
       child: new Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        mainAxisSize: MainAxisSize.min,
         children: <Widget>[
           /**
            * 利用const，避免每次setState都会刷新到这顶部的view
            */
           calendarProvider.calendarConfiguration.weekBarItemWidgetBuilder(),
           AnimatedContainer(
-            duration: Duration(milliseconds: 200),
+              duration: Duration(milliseconds: 500),
               height: expand ? totalHeight : itemHeight,
-            child: expand
-                ? Container(
-                    height: totalHeight,
-                    child: MonthViewPager(),
-                  )
-                : Container(
-                    height: itemHeight,
-                    child: WeekViewPager(),
-                  ),
-          ),
+              child: IndexedStack(
+//                overflow: Overflow.visible,
+                index: index,
+                children: widgets,
+              )),
         ],
       ),
     );

lib/widget/default_custom_day_view.dart

@@ -8,7 +8,7 @@ import 'package:flutter_custom_calendar/style/style.dart';
  */
 
 class DefaultCustomDayWidget extends BaseCustomDayWidget {
-  DefaultCustomDayWidget(DateModel dateModel) : super(dateModel);
+  const DefaultCustomDayWidget(DateModel dateModel) : super(dateModel);
 
   @override
   void drawNormal(DateModel dateModel, Canvas canvas, Size size) {

lib/widget/month_view.dart

@@ -1,4 +1,8 @@
+import 'dart:developer';
+
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_custom_calendar/cache_data.dart';
 import 'package:flutter_custom_calendar/calendar_provider.dart';
 import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/constants/constants.dart';
@@ -15,25 +19,21 @@ class MonthView extends StatefulWidget {
   final int month;
   final int day;
 
-  final DateModel minSelectDate;
-  final DateModel maxSelectDate;
-
-  final Map<DateModel, Object> extraDataMap; //自定义额外的数据
+  final CalendarConfiguration configuration;
 
   const MonthView({
     @required this.year,
     @required this.month,
     this.day,
-    this.minSelectDate,
-    this.maxSelectDate,
-    this.extraDataMap,
+    this.configuration,
   });
 
   @override
   _MonthViewState createState() => _MonthViewState();
 }
 
-class _MonthViewState extends State<MonthView> {
+class _MonthViewState extends State<MonthView>
+    with AutomaticKeepAliveClientMixin {
   List<DateModel> items;
 
   int lineCount;
@@ -42,21 +42,46 @@ class _MonthViewState extends State<MonthView> {
   double totalHeight;
   double mainSpacing = 10;
 
+  DateModel minSelectDate;
+  DateModel maxSelectDate;
+  Map<DateModel, Object> extraDataMap; //自定义额外的数据
+
   @override
   void initState() {
     super.initState();
 
+    minSelectDate = DateModel.fromDateTime(DateTime(
+        widget.configuration.minSelectYear,
+        widget.configuration.minSelectMonth,
+        widget.configuration.minSelectDay));
+    maxSelectDate = DateModel.fromDateTime(DateTime(
+        widget.configuration.maxSelectYear,
+        widget.configuration.maxSelectMonth,
+        widget.configuration.maxSelectDay));
+    extraDataMap = widget.configuration.extraDataMap;
+
+    DateModel firstDayOfMonth =
+        DateModel.fromDateTime(DateTime(widget.year, widget.month, 1));
+    if (CacheData.getInstance().monthListCache[firstDayOfMonth]?.isNotEmpty ==
+        true) {
+      LogUtil.log(TAG: this.runtimeType, message: "缓存中有数据");
+      items = CacheData.getInstance().monthListCache[firstDayOfMonth];
+    } else {
+      LogUtil.log(TAG: this.runtimeType, message: "缓存中无数据");
       items = DateUtil.initCalendarForMonthView(
           widget.year, widget.month, DateTime.now(), DateTime.sunday,
-        minSelectDate: widget.minSelectDate,
-        maxSelectDate: widget.maxSelectDate,
-        extraDataMap: widget.extraDataMap);
+          minSelectDate: minSelectDate,
+          maxSelectDate: maxSelectDate,
+          extraDataMap: extraDataMap);
+      CacheData.getInstance().monthListCache[firstDayOfMonth] = items;
+    }
 
     lineCount = DateUtil.getMonthViewLineCount(widget.year, widget.month);
   }
 
   @override
   Widget build(BuildContext context) {
+    super.build(context);
     LogUtil.log(TAG: this.runtimeType, message: "_MonthViewState build");
     itemHeight = MediaQuery.of(context).size.width / 7;
     totalHeight = itemHeight * lineCount + mainSpacing * (lineCount - 1);
@@ -92,52 +117,57 @@ class _MonthViewState extends State<MonthView> {
             }
           }
 
-          return MultiSelectItemContainer(
+          return ItemContainer(
             dateModel: dateModel,
-            configuration: configuration,
-            calendarProvider: calendarProvider,
+//            configuration: configuration,
+//            calendarProvider: calendarProvider,
           );
         });
   }
+
+  @override
+  bool get wantKeepAlive => true;
 }
 
 /**
  * 多选模式，包装item，这样的话，就只需要刷新当前点击的item就行了，不需要刷新整个页面
  */
-class MultiSelectItemContainer extends StatefulWidget {
+class ItemContainer extends StatefulWidget {
   final DateModel dateModel;
-  CalendarConfiguration configuration;
-  CalendarProvider calendarProvider;
 
-  MultiSelectItemContainer(
-      {Key key, this.dateModel, this.configuration, this.calendarProvider})
-      : super(key: key);
+//  CalendarConfiguration configuration;
+//  CalendarProvider calendarProvider;
+
+  const ItemContainer({
+    Key key,
+    this.dateModel,
+  }) : super(key: key);
 
   @override
-  MultiSelectItemContainerState createState() =>
-      MultiSelectItemContainerState();
+  ItemContainerState createState() => ItemContainerState();
 }
 
-class MultiSelectItemContainerState extends State<MultiSelectItemContainer> {
+class ItemContainerState extends State<ItemContainer> {
   DateModel dateModel;
   CalendarConfiguration configuration;
   CalendarProvider calendarProvider;
 
+  ValueNotifier<bool> isSelected;
+
   @override
   void initState() {
     super.initState();
     dateModel = widget.dateModel;
-    configuration = widget.configuration;
-    calendarProvider = widget.calendarProvider;
+    isSelected = ValueNotifier(dateModel.isSelected);
   }
 
   @override
   Widget build(BuildContext context) {
-//    LogUtil.log(
-//        TAG: this.runtimeType,
-//        message: "_ItemContainerState build ${dateModel}");
-    return Container(
-      child: GestureDetector(
+//    LogUtil.log(TAG: this.runtimeType,message: "ItemContainerState build");
+    calendarProvider = Provider.of<CalendarProvider>(context, listen: false);
+    configuration = calendarProvider.calendarConfiguration;
+
+    return GestureDetector(
       //点击整个item都会触发事件
       behavior: HitTestBehavior.opaque,
       onTap: () {
@@ -177,6 +207,7 @@ class MultiSelectItemContainerState extends State<MultiSelectItemContainer> {
           calendarProvider.selectDateModel = dateModel;
           configuration.calendarSelect(dateModel);
 
+          //单选需要刷新上一个item
           calendarProvider.lastClickItemState?.refreshItem();
           calendarProvider.lastClickItemState = this;
         }
@@ -184,7 +215,11 @@ class MultiSelectItemContainerState extends State<MultiSelectItemContainer> {
         refreshItem();
       },
       child: configuration.dayWidgetBuilder(dateModel),
-      ),
+//        child: ValueListenableBuilder(
+//            valueListenable: isSelected,
+//            builder: (BuildContext context, bool value, Widget child) {
+//              return configuration.dayWidgetBuilder(dateModel);
+//            }),
     );
   }
 
@@ -201,6 +236,7 @@ class MultiSelectItemContainerState extends State<MultiSelectItemContainer> {
     if (mounted) {
       setState(() {
         dateModel.isSelected = !dateModel.isSelected;
+//        isSelected.value = !isSelected.value;
       });
     }
   }

lib/widget/month_view_pager.dart

@@ -2,12 +2,13 @@ import 'package:flutter/material.dart';
 import 'package:flutter_custom_calendar/calendar_provider.dart';
 import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
+import 'package:flutter_custom_calendar/utils/LogUtil.dart';
 import 'package:flutter_custom_calendar/utils/date_util.dart';
 import 'package:flutter_custom_calendar/widget/month_view.dart';
 import 'package:provider/provider.dart';
 
 class MonthViewPager extends StatefulWidget {
-  MonthViewPager();
+  const MonthViewPager({Key key}) : super(key: key);
 
   @override
   _MonthViewPagerState createState() => _MonthViewPagerState();
@@ -18,37 +19,44 @@ class _MonthViewPagerState extends State<MonthViewPager> {
 
   var totalHeight;
 
+//  PageController newPageController;
+
   @override
   void initState() {
+    LogUtil.log(TAG: this.runtimeType, message: "MonthViewPager initState");
+
     calendarProvider = Provider.of<CalendarProvider>(context, listen: false);
 
-    //计算当前月视图的index
-    DateModel dateModel = calendarProvider.lastClickDateModel;
-    List<DateModel> monthList =
-        calendarProvider.calendarConfiguration.monthList;
-    int index = 0;
-    for (int i = 0; i < monthList.length; i++) {
-      DateModel firstDayOfMonth = monthList[i];
-      DateModel lastDayOfMonth = DateModel.fromDateTime(firstDayOfMonth
-          .getDateTime()
-          .add(Duration(
-              days: DateUtil.getMonthDaysCount(
-                  firstDayOfMonth.year, firstDayOfMonth.month))));
+//    //计算当前月视图的index
+//    DateModel dateModel = calendarProvider.lastClickDateModel;
+//    List<DateModel> monthList =
+//        calendarProvider.calendarConfiguration.monthList;
+//    int index = 0;
+//    for (int i = 0; i < monthList.length; i++) {
+//      DateModel firstDayOfMonth = monthList[i];
+//      DateModel lastDayOfMonth = DateModel.fromDateTime(firstDayOfMonth
+//          .getDateTime()
+//          .add(Duration(
+//              days: DateUtil.getMonthDaysCount(
+//                  firstDayOfMonth.year, firstDayOfMonth.month))));
+//
+//      if ((dateModel.isAfter(firstDayOfMonth) ||
+//              dateModel.isSameWith(firstDayOfMonth)) &&
+//          dateModel.isBefore(lastDayOfMonth)) {
+//        index = i;
+//        break;
+//      }
+//    }
+//    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
+//      calendarProvider.calendarConfiguration.monthController.jumpToPage(index);
+//    });
+
 
-      if ((dateModel.isAfter(firstDayOfMonth) ||
-              dateModel.isSameWith(firstDayOfMonth)) &&
-          dateModel.isBefore(lastDayOfMonth)) {
-        index = i;
-        break;
-      }
-    }
-    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
-      calendarProvider.calendarConfiguration.pageController.jumpToPage(index);
-    });
   }
 
   @override
   void dispose() {
+    LogUtil.log(TAG: this.runtimeType, message: "MonthViewPager dispose");
     super.dispose();
   }
 
@@ -64,8 +72,12 @@ class _MonthViewPagerState extends State<MonthViewPager> {
         //月份的变化
         DateModel dateModel = configuration.monthList[position];
         configuration.monthChange(dateModel.year, dateModel.month);
-        //
-        calendarProvider.lastClickDateModel = configuration.monthList[position];
+        //用来保存临时变量，用于月视图切换到周视图的时候，默认是显示中间的一周
+        DateModel temp = new DateModel();
+        temp.year = configuration.monthList[position].year;
+        temp.month = configuration.monthList[position].month;
+        temp.day = configuration.monthList[position].day + 14;
+        calendarProvider.lastClickDateModel = temp;
         //计算下高度，使PageView自适应高度
 
 //        double itemHeight = MediaQuery.of(context).size.width / 7;
@@ -81,21 +93,13 @@ class _MonthViewPagerState extends State<MonthViewPager> {
 //         });
 //       }
       },
-      controller: configuration.pageController,
+      controller: configuration.monthController,
       itemBuilder: (context, index) {
-        DateModel dateModel = configuration.monthList[index];
+        final DateModel dateModel = configuration.monthList[index];
         return new MonthView(
+          configuration: configuration,
           year: dateModel.year,
           month: dateModel.month,
-          minSelectDate: DateModel.fromDateTime(DateTime(
-              configuration.minSelectYear,
-              configuration.minSelectMonth,
-              configuration.minSelectDay)),
-          maxSelectDate: DateModel.fromDateTime(DateTime(
-              configuration.maxSelectYear,
-              configuration.maxSelectMonth,
-              configuration.maxSelectDay)),
-          extraDataMap: configuration.extraDataMap,
         );
       },
       itemCount: configuration.monthList.length,

lib/widget/week_view.dart

@@ -5,6 +5,7 @@ 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/utils/date_util.dart';
+import 'package:flutter_custom_calendar/widget/month_view.dart';
 import 'package:provider/provider.dart';
 
 /**
@@ -14,19 +15,13 @@ class WeekView extends StatefulWidget {
   final int year;
   final int month;
   final DateModel firstDayOfWeek;
-
-  final DateModel minSelectDate;
-  final DateModel maxSelectDate;
-
-  final Map<DateModel, Object> extraDataMap; //自定义额外的数据
+  final CalendarConfiguration configuration;
 
   const WeekView(
       {@required this.year,
       @required this.month,
       this.firstDayOfWeek,
-      this.minSelectDate,
-      this.maxSelectDate,
-      this.extraDataMap});
+      this.configuration});
 
   @override
   _WeekViewState createState() => _WeekViewState();
@@ -35,20 +30,36 @@ class WeekView extends StatefulWidget {
 class _WeekViewState extends State<WeekView> {
   List<DateModel> items;
 
+  DateModel minSelectDate;
+  DateModel maxSelectDate;
+
+  Map<DateModel, Object> extraDataMap; //自定义额外的数据
+
   @override
   void initState() {
     super.initState();
+    minSelectDate = DateModel.fromDateTime(DateTime(
+        widget.configuration.minSelectYear,
+        widget.configuration.minSelectMonth,
+        widget.configuration.minSelectDay));
+    maxSelectDate = DateModel.fromDateTime(DateTime(
+        widget.configuration.maxSelectYear,
+        widget.configuration.maxSelectMonth,
+        widget.configuration.maxSelectDay));
+    extraDataMap = widget.configuration.extraDataMap;
+
     items = DateUtil.initCalendarForWeekView(
         widget.year, widget.month, widget.firstDayOfWeek.getDateTime(), 0,
-        minSelectDate: widget.minSelectDate,
-        maxSelectDate: widget.maxSelectDate,
-        extraDataMap: widget.extraDataMap);
+        minSelectDate: minSelectDate,
+        maxSelectDate: maxSelectDate,
+        extraDataMap: extraDataMap);
   }
 
   @override
   Widget build(BuildContext context) {
-    return Consumer<CalendarProvider>(
-        builder: (context, calendarProvider, child) {
+    CalendarProvider calendarProvider =
+        Provider.of<CalendarProvider>(context, listen: false);
+
     CalendarConfiguration configuration =
         calendarProvider.calendarConfiguration;
     print(
@@ -75,47 +86,11 @@ class _WeekViewState extends State<WeekView> {
             }
           }
 
-            return GestureDetector(
-              onTap: () {
-                //范围外不可点击
-                print("GestureDetector onTap：$dateModel");
-                print("!dateModel.isInRange:${!dateModel.isInRange}");
-                if (!dateModel.isInRange) {
-                  //多选回调
-                  if (configuration.selectMode == Constants.MODE_MULTI_SELECT) {
-                    configuration.multiSelectOutOfRange();
-                  }
-                  return;
-                }
-                calendarProvider.lastClickDateModel = 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;
-                  }
-
-                  //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);
-//                  setState(() {});
-                }
-              },
-              child: configuration.dayWidgetBuilder(dateModel),
+          return ItemContainer(
+            dateModel: dateModel,
+//            configuration: configuration,
+//            calendarProvider: calendarProvider,
           );
         });
-    });
   }
 }

lib/widget/week_view_pager.dart

@@ -3,11 +3,12 @@ import 'package:flutter_custom_calendar/calendar_provider.dart';
 import 'package:flutter_custom_calendar/configuration.dart';
 import 'package:flutter_custom_calendar/controller.dart';
 import 'package:flutter_custom_calendar/model/date_model.dart';
+import 'package:flutter_custom_calendar/utils/LogUtil.dart';
 import 'package:flutter_custom_calendar/widget/week_view.dart';
 import 'package:provider/provider.dart';
 
 class WeekViewPager extends StatefulWidget {
-  WeekViewPager();
+  const WeekViewPager({Key key}) : super(key: key);
 
   @override
   _WeekViewPagerState createState() => _WeekViewPagerState();
@@ -17,45 +18,27 @@ class _WeekViewPagerState extends State<WeekViewPager> {
   int lastMonth; //保存上一个月份，不然不知道月份发生了变化
   CalendarProvider calendarProvider;
 
+//  PageController newPageController;
+
   @override
   void initState() {
-    print("WeekViewPager initState");
+    LogUtil.log(TAG: this.runtimeType, message: "WeekViewPager initState");
 
     calendarProvider = Provider.of<CalendarProvider>(context, listen: false);
 
     lastMonth = calendarProvider.lastClickDateModel.month;
-    //计算当前周视图的index
-    DateModel dateModel = calendarProvider.lastClickDateModel;
-    List<DateModel> weekList = calendarProvider.calendarConfiguration.weekList;
-    int index = 0;
-
-    for (int i = 0; i < weekList.length; i++) {
-      DateModel firstDayOfWeek = weekList[i];
-      DateModel lastDayOfWeek = DateModel.fromDateTime(
-          firstDayOfWeek.getDateTime().add(Duration(days: 7)));
-
-      if ((dateModel.isSameWith(weekList[i]) ||
-              dateModel.isAfter(weekList[i])) &&
-          dateModel.isBefore(lastDayOfWeek)) {
-        index = i;
-        break;
-      }
-    }
-//    print("weekList:$weekList");
-//    print("当前周:index:$index");
-    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
-      calendarProvider.calendarConfiguration.weekController.jumpToPage(index);
-    });
   }
 
   @override
   void dispose() {
-    print("WeekViewPager dispose");
+    LogUtil.log(TAG: this.runtimeType, message: "WeekViewPager dispose");
     super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
+    LogUtil.log(TAG: this.runtimeType, message: "WeekViewPager build");
+
     //    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);
@@ -63,6 +46,7 @@ class _WeekViewPagerState extends State<WeekViewPager> {
         calendarProvider.calendarConfiguration;
 
     return Container(
+      height: configuration.itemSize ?? MediaQuery.of(context).size.width / 7,
       child: PageView.builder(
         onPageChanged: (position) {
 //          周视图的变化
@@ -71,28 +55,19 @@ class _WeekViewPagerState extends State<WeekViewPager> {
           if (lastMonth != currentMonth) {
             configuration.monthChange(
                 firstDayOfWeek.year, firstDayOfWeek.month);
+            lastMonth = currentMonth;
           }
-          calendarProvider.lastClickDateModel =
-              configuration.weekList[position];
-//          DateModel dateModel = configuration.weekList[position];
-//          configuration.monthChange(dateModel.year, dateModel.month);
+//          calendarProvider.lastClickDateModel = configuration.weekList[position]
+//            ..day += 4;
         },
-        controller: configuration.weekController,
+        controller: calendarProvider.calendarConfiguration.weekController,
         itemBuilder: (context, index) {
           DateModel dateModel = configuration.weekList[index];
           return new WeekView(
             year: dateModel.year,
             month: dateModel.month,
             firstDayOfWeek: dateModel,
-            minSelectDate: DateModel.fromDateTime(DateTime(
-                configuration.minSelectYear,
-                configuration.minSelectMonth,
-                configuration.minSelectDay)),
-            maxSelectDate: DateModel.fromDateTime(DateTime(
-                configuration.maxSelectYear,
-                configuration.maxSelectMonth,
-                configuration.maxSelectDay)),
-            extraDataMap: configuration.extraDataMap,
+            configuration: calendarProvider.calendarConfiguration,
           );
         },
         itemCount: configuration.weekList.length,