Merge pull request #16 from FlutterOpen/dev

feat(): 代理模式完成

Author: nb312

README.md

@@ -15,4 +15,8 @@
 8. 组合模式
 9. 装饰者模式
 10. 外观/门面模式
-11. 享元模式
+11. 享元模式
+12. 代理模式
+
+### 行为型模式
+待添加

lib/constant/string_const.dart

@@ -37,4 +37,7 @@ class StringConst {
 
   //享元模式
   static const String FLYWEIGHT_ = "享元模式";
+
+  //享元模式
+  static const String PROXY_ = "代理模式";
 }

lib/main.dart

@@ -7,6 +7,7 @@ import 'package:flutter_design/page/decorator/decorator_page.dart';
 import 'package:flutter_design/page/facade/facade_page.dart';
 import 'package:flutter_design/page/filter/filter_page.dart';
 import 'package:flutter_design/page/flyweight/flyweight_page.dart';
+import 'package:flutter_design/page/proxy/proxy_page.dart';
 
 import 'constant/page_const.dart';
 import 'constant/string_const.dart';
@@ -37,6 +38,7 @@ class MyApp extends StatelessWidget {
         PageConst.DECORATOR_PAGE: (context) => DecoratorPage(),
         PageConst.FACADE_PAGE: (context) => FacadePage(),
         PageConst.FLYWEIGHT_PAGE: (context) => FlyweightPage(),
+        PageConst.PROXY_PAGE: (context) => ProxyPage(),
       },
     );
   }

lib/page/home_page.dart

@@ -26,6 +26,7 @@ Map<String, String> map = {
   PageConst.DECORATOR_PAGE: StringConst.DECORATOR_,
   PageConst.FACADE_PAGE: StringConst.FACADE_,
   PageConst.FLYWEIGHT_PAGE: StringConst.FLYWEIGHT_,
+  PageConst.PROXY_PAGE: StringConst.PROXY_,
 };
 
 class _HomePageState extends State<HomePage> {

lib/page/proxy/proxy_mode.dart

@@ -0,0 +1,22 @@
+/// Created by NieBin on 2020-03-27
+/// Github: https://github.com/nb312
+/// Email: [email protected]
+abstract class BuyProduct {
+  void buyPhone();
+}
+
+class BuyHuWei implements BuyProduct {
+  @override
+  void buyPhone() {
+    print("购买华为手机");
+  }
+}
+
+class ProxyBuy implements BuyProduct {
+  @override
+  void buyPhone() {
+    BuyProduct hua = BuyHuWei();
+    hua.buyPhone();
+    print("我爱中国?");
+  }
+}

lib/page/proxy/proxy_page.dart

@@ -0,0 +1,38 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_design/constant/string_const.dart';
+import 'package:flutter_design/page/proxy/proxy_mode.dart';
+
+/// Created by NieBin on 2020-03-27
+/// Github: https://github.com/nb312
+/// Email: [email protected]
+
+class ProxyPage extends StatefulWidget {
+  @override
+  _ProxyPageState createState() => _ProxyPageState();
+}
+
+class _ProxyPageState extends State<ProxyPage> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(StringConst.PROXY_),
+      ),
+      body: Container(
+        child: Center(
+          child: FlatButton(
+            color: Colors.brown,
+            child: Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 10),
+              child: Text("购买手机"),
+            ),
+            onPressed: () {
+              BuyProduct product = ProxyBuy();
+              product.buyPhone();
+            },
+          ),
+        ),
+      ),
+    );
+  }
+}