# FlutterAppDemo

**Repository Path**: java-script/flutter-app-demo

## Basic Information

- **Project Name**: FlutterAppDemo
- **Description**: Flutter学习项目框架，从整体上理解Flutter开发。
- **Primary Language**: Dart
- **License**: BSD-2-Clause
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 1
- **Created**: 2021-04-28
- **Last Updated**: 2022-04-17

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Flutter版 WanAndroid App.

本项目包含启动页，引导页，主题色，国际化，Bloc，RxDart。拥有较好的项目结构，比较规范的代码。 App拥有精致的UI界面，统一的交互，侧滑退出，列表和Web界面均提供快速滚动至顶部功能。  

有关项目最新动态，可以关注App内第一条Hot Item信息。

### 运行本项目注意！！！

Support [√] Flutter (Channel stable, v1.17.0).  

由于在国内访问Flutter有时可能会受到限制，clone项目后，请勿直接packages get，建议运行如下目录行：
```
export PUB_HOSTED_URL=https://pub.flutter-io.cn  
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn  
flutter packages get
flutter run --release
```

### [更新说明](./CHANGELOGS.md)
v0.2.6 (2020.05.08)  
Support [√] Flutter (Channel stable, v1.17.0).  
版本升级功能(仅供参考)

### [FlutterRepos](https://github.com/Sky24n/FlutterRepos)
1. [base_library](https://github.com/Sky24n/FlutterRepos/tree/master/base_library) Flutter基础组件库，方便多个项目共用。
2. [login_demo](https://github.com/Sky24n/FlutterRepos/tree/master/login_demo) 关于App启动时，未登录跳登录页，已登录进主页。
3. [flutter_gallery](https://github.com/Sky24n/FlutterRepos/tree/master/flutter_gallery) 也许是Google官方最后一个版本的gallery(旧版)。

## App目录结构
>- |--lib
>    - |-- blocs (bloc相关)
>    - |-- common (常用类，例如常量Constant)
>    - |-- data (网络数据层)
>    - |-- db (数据库)
>    - |-- demos (flutter demos)
>    - |-- event (事件类)
>    - |-- models (实体类)
>    - |-- res (资源文件，string，colors，dimens，styles)
>    - |-- ui (界面相关page，dialog，widgets)
>    - |-- utils (工具类)

### data网络数据层
>- |--data
>    - |-- api (url字段)
>    - |-- net (单例DioUtil)
>    - |-- protocol (请求与返回实体类)
>    - |-- repository (接口请求&解析)

### api
```dart
class WanAndroidApi {
  /// 首页banner http://www.wanandroid.com/banner/json
  static const String BANNER = "banner";
  static const String USER_REGISTER = "user/register"; //注册
  static const String USER_LOGIN = "user/login"; //登录
  static const String USER_LOGOUT = "user/logout"; //退出

  // 拼接url
  static String getPath({String path: '', int page, String resType: 'json'}) {
    StringBuffer sb = new StringBuffer(path);
    if (page != null) {
      sb.write('/$page');
    }
    if (resType != null && resType.isNotEmpty) {
      sb.write('/$resType');
    }
    return sb.toString();
  }
}
```
### 网络请求工具类 DioUtil
```dart
// 打开debug模式.
DioUtil.openDebug();   
  
// 配置网络参数.
Options options = DioUtil.getDefOptions();
options.baseUrl = "http://www.wanandroid.com/";
HttpConfig config = new HttpConfig(options: options);
DioUtil().setConfig(config);
  
// 两种单例请求方式.
DioUtil().request<List>(Method.get, "banner/json");
DioUtil.getInstance().request(Method.get, "banner/json");
  
//示例
LoginReq req = new LoginReq('username', 'password');
DioUtil().request(Method.post, "user/login",data: req.toJson());
  
//示例
FormData formData = new FormData.from({
      "username": "username",
      "password": "password",
    });
DioUtil().requestR(Method.post, "user/login",data: rformData);

```  
### 请求与返回实体类 protocol
```dart
class LoginReq {
  String username;
  String password;

  LoginReq(this.username, this.password);

  LoginReq.fromJson(Map<String, dynamic> json)
      : username = json['username'],
        password = json['password'];

  Map<String, dynamic> toJson() => {
    'username': username,
    'password': password,
  };

  @override
  String toString() {
    StringBuffer sb = new StringBuffer('{');
    sb.write("\"username\":\"$username\"");
    sb.write(",\"password\":$password");
    sb.write('}');
    return sb.toString();
  }
}
```
### 接口请求&解析 repository
```dart
 class WanRepository {
  Future<List<BannerModel>> getBanner() async {
    BaseResp<List> baseResp = await DioUtil().request<List>(
        Method.get, WanAndroidApi.getPath(path: WanAndroidApi.BANNER));
    List<BannerModel> bannerList;
    if (baseResp.code != Constant.STATUS_SUCCESS) {
      return new Future.error(baseResp.msg);
    }
    if (baseResp.data != null) {
      bannerList = baseResp.data.map((value) {
        return BannerModel.fromJson(value);
      }).toList();
    }
    return bannerList;
  }
}
```

## 资源文件 res
>- |--res
>    - |-- colors.dart
>    - |-- dimens.dart
>    - |-- strings.dart
>    - |-- styles.dart

### colors.dart
```dart
class Colours {
  static const Color app_main = Color(0xFF666666);  
  
  static const Color text_dark = Color(0xFF333333);
  static const Color text_normal = Color(0xFF666666);
  static const Color text_gray = Color(0xFF999999);  
}
```
### dimens.dart
```dart
class Dimens {
  static const double font_sp12 = 12;
  static const double font_sp14 = 14;
  static const double font_sp16 = 16;
  
  static const double gap_dp5 = 5;
  static const double gap_dp10 = 10;
}
```
### strings.dart
```dart
class Ids {
  static const String titleHome = 'title_home';
}  
Map<String, Map<String, Map<String, String>>> localizedValues = {
  'en': {
    'US': {
      Ids.titleHome: 'Home',
    }
  },
  'zh': {
    'CN': {
      Ids.titleHome: '主页',
    },
    'HK': {
      Ids.titleHome: '主頁',
    },
    'TW': {
      Ids.titleHome: '主頁',
    }
  }
};
```
### styles.dart
```dart
class TextStyles {
  static TextStyle listTitle = TextStyle(
    fontSize: Dimens.font_sp16,
    color: Colours.text_dark,
    fontWeight: FontWeight.bold,
  );
  static TextStyle listContent = TextStyle(
    fontSize: Dimens.font_sp14,
    color: Colours.text_normal,
  );
  static TextStyle listExtra = TextStyle(
    fontSize: Dimens.font_sp12,
    color: Colours.text_gray,
  );
}
//  间隔
class Gaps {
  // 水平间隔
  static Widget hGap5 = new SizedBox(width: Dimens.gap_dp5);
  static Widget hGap10 = new SizedBox(width: Dimens.gap_dp10);
  // 垂直间隔
  static Widget vGap5 = new SizedBox(height: Dimens.gap_dp5);
  static Widget vGap10 = new SizedBox(height: Dimens.gap_dp10);
}
```
### Flutter 国际化相关 [fluintl](https://github.com/Sky24n/fluintl)
fluintl是一个为应用提供国际化的库，可快速集成实现应用多语言。该库封装了一个国际化支持类，通过提供统一方法getString(id)获取字符串。
```dart
// 在MyApp initState配置多语言资源
setLocalizedValues(localizedValues); //配置多语言资源
// 在MaterialApp指定localizationsDelegates和supportedLocales
MaterialApp(  
   home: MyHomePage(),  
   localizationsDelegates: [  
   GlobalMaterialLocalizations.delegate,  
   GlobalWidgetsLocalizations.delegate,  
   CustomLocalizations.delegate //设置本地化代理     
   ],  
   supportedLocales: CustomLocalizations.supportedLocales,//设置支持本地化语言集合     
); 
// 字符串获取
IntlUtil.getString(context, Ids.titleHome);
CustomLocalizations.of(context).getString(StringIds.titleHome);  

// 支持复用。替换字符串格式要求：'%\${index}\$s' ，{index} 第几个参数，从0开始。
Ids.click_times: '%\$0\$s点击了%\$1\$s次',   
IntlUtil.getString(context, Ids.click_times, params: ['Tom', '$_counter'])  
// print: Tom点击了0次
```

### Flutter 屏幕适配 [ScreenUtil](https://github.com/Sky24n/flustars) 
 方案一、不依赖context
```dart
// 步骤1
// 如果设计稿尺寸默认配置一致，无需该设置。  配置设计稿尺寸 默认 360.0 / 640.0 / 3.0
setDesignWHD(_designW,_designH,_designD);  
  
// 步骤2
// 在MainPageState build 调用MediaQuery.of(context)
class MainPageState extends State<MainPage> {
  @override
  Widget build(BuildContext context) {
    // 在 MainPageState build 调用 MediaQuery.of(context)
    MediaQuery.of(context);
    return new Scaffold(
      appBar: new AppBar(),
    );
  }
}  
  
// 步骤3
ScreenUtil.getInstance().screenWidth
ScreenUtil.getInstance().screenHeight
//屏幕适配相关  
ScreenUtil.getInstance().getWidth(size); //返回根据屏幕宽适配后尺寸（单位 dp or pt）
ScreenUtil.getInstance().getHeight(size); //返回根据屏幕高适配后尺寸 （单位 dp or pt）
ScreenUtil.getInstance().getWidthPx(sizePx); //sizePx 单位px
ScreenUtil.getInstance().getHeightPx(sizePx); //sizePx 单位px
ScreenUtil.getInstance().getSp(fontSize); //返回根据屏幕宽适配后字体尺寸
  
double adapterSize = ScreenUtil.getInstance().getAdapterSize(100);
```
方案二、依赖context
```dart
//如果设计稿尺寸默认配置一致，无需该设置。  配置设计稿尺寸 默认 360.0 / 640.0 / 3.0
setDesignWHD(_designW,_designH,_designD);  

ScreenUtil.getScreenW(context); //屏幕 宽
ScreenUtil.getScreenH(context); //屏幕 高
//屏幕适配相关  
ScreenUtil.getScaleW(context, size); //返回根据屏幕宽适配后尺寸（单位 dp or pt）
ScreenUtil.getScaleH(context, size); //返回根据屏幕高适配后尺寸 （单位 dp or pt）
ScreenUtil.getScaleSp(context, size) ;//返回根据屏幕宽适配后字体尺寸
  
double adapterSize = ScreenUtil.getAdapterSizeCtx(context, 100)
```
### Flutter 数据存储  [SpUtil](https://github.com/Sky24n/flustars)
单例"同步" SharedPreferences 工具类。  
支持get获取默认参数、支持存储实体对象、支持存储实体对象数组。
```dart
    // 等待Sp初始化完成。
    await SpUtil.getInstance();
    
    SpUtil.getString('key', defValue: '');
    SpUtil.getInt('key', defValue: 0);
  
    /// save object example.
    /// 存储实体对象示例。
    City city = new City();
    city.name = "成都市";
    SpUtil.putObject("loc_city", city);
  
    City hisCity = SpUtil.getObj("loc_city", (v) => City.fromJson(v)); 
    print("thll Str: " + (hisCity == null ? "null" : hisCity.toString()));
  
    /// save object list example.
    /// 存储实体对象List示例。
    List<City> list = new List();
    list.add(new City(name: "成都市"));
    list.add(new City(name: "北京市"));
    SpUtil.putObjectList("loc_city_list", list);
  
    List<City> _cityList = SpUtil.getObjList("loc_city_list", (v) => City.fromJson(v));
    print("thll List: " + (_cityList == null ? "null" : _cityList.toString()));
```

## Flutter Demos 
>- |--demos
>    - |-- city_select_page.dart 城市列表(索引&悬停)示例
>    - |-- date_page.dart 日期格式化示例
>    - |-- image_size_page.dart 获取图片尺寸示例
>    - |-- money_page.dart 金额(元转分/分转元)示例
>    - |-- pinyin_page.dart 汉字转拼音示例
>    - |-- regex_page.dart 正则工具类示例
>    - |-- round_portrait_page.dart 圆形圆角头像示例
>    - |-- timeline_page.dart 时间轴示例
>    - |-- timer_page.dart 倒计时/定时任务示例
>    - |-- widget_page.dart 获取Widget尺寸/屏幕坐标示例


## Screenshots

截图无法查看？

[掘金地址](https://juejin.im/post/5c380b336fb9a049fd100eff)  
[简书地址](https://www.jianshu.com/p/be0107298bc5)

|主界面|启动页|侧滑Back|
|:---:|:---:|:---:|
|![](https://gitee.com/uploads/images/2019/0506/004903_0837c169_506864.gif)|![](https://raw.githubusercontent.com/Sky24n/LDocuments/master/AppImgs/flutter_wanandroid/splash.gif")|![](https://raw.githubusercontent.com/Sky24n/LDocuments/master/AppImgs/flutter_wanandroid/slide_back.gif")|
|快速滚动到顶部|分类页面|国际化|
|![](https://gitee.com/uploads/images/2019/0506/004903_0837c169_506864.gif")|![](https://raw.githubusercontent.com/Sky24n/LDocuments/master/AppImgs/flutter_wanandroid/tree.gif")|![](https://gitee.com/uploads/images/2019/0506/004906_f1f1147e_506864.gif")|
|主题色|闪屏广告页|引导页|
|![](https://gitee.com/uploads/images/2019/0506/004907_498b0fb8_506864.gif")|![](https://raw.githubusercontent.com/Sky24n/LDocuments/master/AppImgs/flutter_wanandroid/2018-11-23_13_05_08.gif")|![](https://raw.githubusercontent.com/Sky24n/LDocuments/master/AppImgs/flutter_wanandroid/2018-11-19_12_35_32.gif")|

### Thanks
① 感谢鸿洋大佬提供的[开源api](http://www.wanandroid.com/blog/show/2)  
② 界面参考[gitme](https://flutterchina.club/app/gm.html)  
③ [Github Trending Api](https://github.com/huchenme/github-trending-api)   
④ [Streams-Block-Reactive-Programming-in-Flutter](https://github.com/boeledi/Streams-Block-Reactive-Programming-in-Flutter) 

### 项目问题汇总
Q1：Flutter国际化系统切换iOS不生效问题？  
A1：在Xcode项目Localizations下添加支持语言即可，[原文](https://stanzhai.site/blog/post/stanzhai/Flutter国际化设置在iOS设备上不生效的问题)。

### App
Apk：[flutter_wanandroid.apk](https://github.com/Sky24n/Doc)  
iOS：请自行clone项目代码运行。

### 关于作者
GitHub : [Sky24n](https://github.com/Sky24n)  
简书 &nbsp;&nbsp;&nbsp;&nbsp;: [Sky24n](https://www.jianshu.com/u/cbf2ad25d33a)  
掘金 &nbsp;&nbsp;&nbsp;&nbsp;: [Sky24n](https://juejin.im/user/5b9e8a92e51d453df0440422/posts)  
Email &nbsp;&nbsp;: 863764940@qq.com

### [Moss](https://github.com/Sky24n/Moss)
Flutter GitHub Client App.  
GitHub &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: [Moss](https://github.com/Sky24n/Moss)  
Download : [网盘: m5e2](https://pan.baidu.com/s/1rIQBs6rHvcz9WgkgEmO1NQ)

|![](https://s3.ax1x.com/2021/02/06/ytQBxP.png)|![](https://s3.ax1x.com/2021/02/06/ytl6Qx.png)|![](https://s3.ax1x.com/2021/02/06/ytlfTe.png)|
|:---:|:---:|:---:|
|![](https://s1.ax1x.com/2020/11/08/BTak38.png)|![](https://s1.ax1x.com/2020/11/08/BTa6DH.png)|![](https://s1.ax1x.com/2020/11/08/BTaeBj.png)|