feat(add city picker demo):

lib/widgets/components/Pick/CityPIcker/demo.dart

@@ -8,14 +8,37 @@
 //
 
 import 'package:flutter/material.dart';
+import 'package:city_pickers/city_pickers.dart';
 
-class Demo extends StatefulWidget {
+class CityPickerDemo extends StatefulWidget {
   _Demo createState() => _Demo();
 }
 
-class _Demo extends State<Demo> {
+class _Demo extends State<CityPickerDemo> {
+  String _result;
+  show(context) async {
+    Result temp  = await CityPickers.showCityPicker(
+      context: context,
+//      locationCode: '640221',
+      height: 400,
+    );
+    setState(() {
+      _result = "${temp.toString()}";
+    });
+  }
 
   Widget build(BuildContext context) {
-    return Container();
+    return Center(
+        child: Column(
+          children: <Widget>[
+            Text("result: ${_result.toString()}"),
+            RaisedButton(
+              onPressed: () {this.show(context);
+              },
+              child: Text("select"),
+            ),
+          ],
+        )
+    );
   }
 }

lib/widgets/components/Pick/CityPIcker/index.dart

@@ -8,14 +8,36 @@
 //
 
 import 'package:flutter/material.dart';
-
+import 'package:flutter_go/components/widget_demo.dart';
+import 'demo.dart';
+const String content0 = '''
+### **简介**
+> 显示中国的省市县地区
+通过函数 **showCityPicker** 调用, 在容器窗口上弹出遮罩层
+''';
+const String content1 = '''
+### **基本用法**
+- locationCode 初始化地区选择
+- height 弹出层高度
+- context 上下文对象
+''';
 class Demo extends StatefulWidget {
+  static const String routeName = '/components/Pick/CityPicker';
   _Demo createState() => _Demo();
 }
 
 class _Demo extends State<Demo> {
 
   Widget build(BuildContext context) {
-    return Container();
+    return WidgetDemo(
+      title: 'CityPicker',
+      codeUrl: '',
+      docUrl: '',
+      contentList: [
+        content0,
+        content1,
+        CityPickerDemo()
+      ],
+    );
   }
 }

lib/widgets/components/Pick/index.dart

@@ -5,6 +5,7 @@ import 'YearPicker/index.dart' as YearPicker;
 import 'DayPicker/index.dart' as DayPicker;
 import 'MonthPicker/index.dart' as MonthPicker;
 import 'ShowdatePicker/index.dart' as ShowdatePicker;
+import 'CityPIcker/index.dart' as CityPicker;
 
 List<WidgetPoint> widgetPoints = [
   WidgetPoint(
@@ -27,4 +28,10 @@ List<WidgetPoint> widgetPoints = [
     routerName: ShowdatePicker.Demo.routeName,
     buildRouter: (BuildContext context) => ShowdatePicker.Demo(),
   ),
+  WidgetPoint(
+    name: 'CityPicker',
+    routerName: CityPicker.Demo.routeName,
+    buildRouter: (BuildContext context) => CityPicker.Demo(),
+  ),
+
 ];

pubspec.yaml

@@ -31,6 +31,7 @@ dependencies:
   flutter_webview_plugin: ^0.3.0+2
   # 日期格式化
   intl: 0.15.7
+  city_pickers: ^0.1.0
 
 dev_dependencies:
   flutter_test: