feat(add CupertinoTabScaffold):

lib/widgets/themes/Cupertino/CupertinoTabScaffold/demo.dart

@@ -0,0 +1,79 @@
+/**
+ * Created with Android Studio.
+ * User: 三帆
+ * Date: 20/01/2019
+ * Time: 22:28
+ * email: sanfan.hx@alibaba-inc.com
+ * tartget:  CupertinoTabBar
+ */
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class CupertinoTabScaffoldDemo extends StatefulWidget {
+  _Demo createState() => _Demo();
+}
+
+class _Demo extends State<CupertinoTabScaffoldDemo> {
+  int index = 0;
+
+  changeIndex(int _index) {
+    this.setState(() {
+      index = _index;
+    });
+  }
+  Widget build(BuildContext context) {
+    return SizedBox(
+      height: 500,
+      child: CupertinoTabScaffold(
+        tabBar: CupertinoTabBar(
+          items: <BottomNavigationBarItem> [
+            BottomNavigationBarItem(
+              title: Text("1"),
+              icon: Icon(Icons.add),
+            ),
+            BottomNavigationBarItem(
+              title: Text("2"),
+              icon: Icon(Icons.add),
+            )
+          ],
+        ),
+        tabBuilder: (BuildContext context, int index) {
+          return CupertinoTabView(
+            builder: (BuildContext context) {
+              return CupertinoPageScaffold(
+                navigationBar: CupertinoNavigationBar(
+                  middle: Text('Page 1 of tab $index'),
+                ),
+                child: Center(
+                  child: CupertinoButton(
+                    child: Text('Next page = $index'),
+                    onPressed: () {
+                      Navigator.of(context).push(
+                        CupertinoPageRoute<void>(
+                          builder: (BuildContext context) {
+                            return CupertinoPageScaffold(
+                              navigationBar: CupertinoNavigationBar(
+                                middle: Text('Page 2 of tab $index'),
+                              ),
+                              child: Center(
+                                child: CupertinoButton(
+                                  child: const Text('Back'),
+                                  onPressed: () { Navigator.of(context).pop(g); },
+                                ),
+                              ),
+                            );
+                          },
+                        ),
+                      );
+                    },
+                  ),
+                ),
+              );
+            },
+          );
+        },
+      ),
+    );
+  }
+}

lib/widgets/themes/Cupertino/CupertinoTabScaffold/index.dart

@@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_go/common/widget_demo.dart';
+import 'package:flutter_go/widgets/themes/Material/MaterialColor/demo.dart';
+import 'demo.dart';
+const Text0 = '''
+### **简介**
+
+> 实现iOS应用程序的选项卡式的根布局与结构。
+
+一个在底部放置标签栏，标签栏之间或后面放置内容的脚手架.
+
+这个脚手架, tabBar组件与tabBuilder组件是必须配置的。如果你为该脚手架配置的tabBar组件是 **CupertinoTabBar**的话. 它会自动监听**CupertinoTabBar**底部的切换事件, 去动态切换主体显示的内容.
+
+
+选项卡的内容是使用**tabBuilder**选项卡生成器生成的。TabBuilder必须能够生成tabbar中组件数组长度相同数量的组件。不活动的选项卡将被移到后台并禁用其动画。
+
+
+使用cupertinobview作为每个选项卡的内容，以支持具有并行导航状态和历史记录的选项卡。
+
+
+通过BottomNavigationBarItem列表,在屏幕底部展示多个小组件,  默认下选择第一个小组件;
+
+### **基本用法**
+
+
+''';
+
+
+class Demo extends StatefulWidget {
+  static const String routeName =
+      '/element/themes/Cupertino/CupertinoTabScaffold';
+
+  @override
+  State<StatefulWidget> createState() => _DemoState();
+}
+
+class _DemoState extends State<Demo> {
+  @override
+  Widget build(BuildContext context) {
+    return WidgetDemo(
+      title: 'CupertinoTabScaffold',
+      codeUrl: '/themes/Cupertino/CupertinoTabScaffold/demo.dart',
+      docUrl: 'https://docs.flutter.io/flutter/cupertino/CupertinoTabScaffold-class.html',
+      contentList: [
+        Text0,
+        CupertinoTabScaffoldDemo()
+      ],
+    );
+  }
+}

lib/widgets/themes/Cupertino/index.dart

@@ -6,6 +6,7 @@ import './CupertinoSegmentedControl/index.dart' as CupertinoSegmentedControl;
 import './CupertinoSliverNavigationBar/index.dart' as CupertinoSliverNavigationBar;
 import './CupertinoSwitch/index.dart' as CupertinoSwitch;
 import './CupertinoTabBar/index.dart' as CupertinoTabBar;
+import './CupertinoTabScaffold/index.dart' as CupertinoTabScaffold;
 List<WidgetPoint> widgetPoints = [
   WidgetPoint(
     name: 'CupertinoScrollbar',
@@ -42,4 +43,9 @@ List<WidgetPoint> widgetPoints = [
     routerName: CupertinoTabBar.Demo.routeName,
     buildRouter: (BuildContext context) => CupertinoTabBar.Demo(),
   ),
+  WidgetPoint(
+    name: 'CupertinoTabScaffold',
+    routerName: CupertinoTabScaffold.Demo.routeName,
+    buildRouter: (BuildContext context) => CupertinoTabScaffold.Demo(),
+  ),
 ];