# ADSuyi广告聚合SdkDemo_flutter_sdk
**Repository Path**: jianlailing/ADSuyiSdkDemo-flutter
## Basic Information
- **Project Name**: ADSuyi广告聚合SdkDemo_flutter_sdk
- **Description**: ADmobile ADSuyi-Flutter 插件
ADmobile广告聚合平台,让移动开发者可以根据自身业务选择支持接入的三方广告平台,并能快速接入、统一管理广告流量,同时借助ADmobile广告数据分析和聚合优化工具提升收益。SDK支持一站聚合管理优量汇穿山甲快手联盟等国内十几家主流移动广告平台,提供开屏广告、原生广告、插屏广告、横幅广告、激励视频广告、视频广告、全屏视频、插屏视频等广告样式,满足各类移动广告变现需求。支持Android、iOS、Flutter开发。
- **Primary Language**: Dart
- **License**: BSD-3-Clause
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 12
- **Created**: 2022-01-12
- **Last Updated**: 2022-05-24
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# ADSuyi广告聚合SdkDemo_flutter_插件
[TOC]
## 1.1 概述
尊敬的开发者朋友,欢迎您使用ADmobile 苏伊士广告SDK。通过本文档,您可以在几分钟之内轻松完成广告的集成过程。
操作系统: iOS 9.0 及以上版本,Android 4.4 及以上版本,
运行设备:iPhone (iPad上可能部分广告正常展示,但是存在填充很低或者平台不支持等问题,建议不要在iPad上展示广告),Android
## 2.1 SDK导入
首先需要导入主SDK
```dart
dependencies:
  ad_suyi_flutter_sdk: {library version}
```
然后需要导入各平台SDK,
### 2.1.1 iOS在项目的podfile中增加如下内容,可以根据实际需要选择性导入平台
```ruby
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/gdt'     	# 优量汇
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/admobile' # ADMobile  #必选
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/baidu'		# baidu
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/bu'   		# 穿山甲(头条)
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/google'   # 谷歌
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/inmobi'   # Inmobi
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/ks'				# 快手
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/unity'		# Unity
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/mtg'			# Mobvista(汇量)
pod 'ADSuyiSDK/ADSuyiSDKPlatforms/vungle'		# vungle
// 推荐导入,通过系统定位获取定位信息
pod 'ADSuyiLocationManagerGPS'// 含有系统定位代码
```
### 2.1.2 Android在项目中增加如下内容,可以根据实际需要选择性导入平台
#### 2.1.2.1. 在android根目录build.gradle中添加suyi仓库
```java
allprojects {
    repositories {
        ...
        google()
        jcenter()
        mavenCentral()
        // 添加以下仓库地址
        // ADSuyi远程仓库
        maven { url "http://101.37.191.20:9091/repository/maven-releases/" }
        // 如果添加了汇量广告,需要添加汇量的远程仓库依赖
        maven { url "https://dl-maven-android.mintegral.com/repository/mbridge_android_sdk_support/" }
        // 如果添加了云码广告,需要添加云码的远程仓库依赖
        maven { url 'http://maven.aliyun.com/nexus/content/repositories/releases/' }
        // 如果添加了华为联盟广告,需要添加华为联盟的远程仓库依赖
        maven { url 'https://developer.huawei.com/repo/' }
    }
}
```
#### 2.1.2.2. OAID支持
导入安全联盟的OAID支持库 oaid_sdk_1.0.25.aar,可在Demo的libs目录下找到,强烈建议使用和Demo中一样版本的OAID库(包括项目中已存在的依赖的oaid版本);
将Demo中assets文件夹下的supplierconfig.json文件复制到自己的assets目录下并按照supplierconfig.json文件中的说明进行OAID的 AppId 配置,supplierconfig.json文件名不可修改;
#### 2.1.2.3. 在android/app目录build.gradle中添加相关依赖
```java
// support支持库,如果是AndroidX请使用对应的支持库
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
implementation 'com.android.support:design:28.0.0'
// ADSuyiSdk核心库是必须导入的
implementation 'cn.admobiletop.adsuyi.ad:core:3.4.1.11041'
// OAID库是必须导入的,请保持和Demo中版本一致
implementation(name: 'oaid_sdk_1.0.25', ext: 'aar')
// oaid1.0.25版本适配器,导入1.0.25版本oaid必须的
implementation 'cn.admobiletop.adsuyi.ad:oaid:1.0.25.08021'
// 艾狄墨搏AdapterSdk,必须的`
implementation 'cn.admobiletop.adsuyi.ad.adapter:admobile:5.0.2.11061'
// 广点通AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:gdt:4.422.1292.11122'
// 头条AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:toutiao:4.0.2.2.11152'
// 百度AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:baidu:5.98.05132'
// 百度增强版AdapterSdk,可选的(请勿与百度同时导入)
implementation 'cn.admobiletop.adsuyi.ad.adapter:baidu-enhanced:9.17.11151'
// 汇量AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:mintegral:15.7.47.11021'
// InmobiAdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:inmobi:7.5.3.10191'
implementation 'com.squareup.picasso:picasso:2.5.2'
// 讯飞AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:ifly:5.0.2.06012'
// 快手基础版AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:ksadbase:3.3.17.3.11151'
// 快手内容版AdapterSdk,可选的(比快手基础版多一个内容组件,不需要内容组件无需导入该版本,不可和快手基础版同时导入)
implementation 'cn.admobiletop.adsuyi.ad.adapter:ksadcontent:3.3.24.6.11151'
// 米盟AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:mimo:5.1.3.11151'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.github.bumptech.glide:glide:4.9.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
// 华为广告联盟AdadapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:hwpps:13.4.45.308.08112'
// 云码AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:yunma:1.0.5.09022'
// 爱奇艺AdapterSdk,可选的
implementation 'cn.admobiletop.adsuyi.ad.adapter:iqy:1.3.19.10192'
```
## 3.1 工程环境配置
### 3.1.1 IOS 工程环境配置
#### 3.1.1.1. info.plist 添加支持 Http访问字段
```
NSAppTransportSecurity
NSAllowsArbitraryLoads
```
#### 3.1.1.2. Info.plist 添加定位权限字段(使用ADMobGenLocation可不设置)
```
NSLocationWhenInUseUsageDescription
NSLocationAlwaysAndWhenInUseUsageDeion
```
#### 3.1.1.3. Info.plist推荐设置白名单,可提高广告收益
```
LSApplicationQueriesSchemes
    
        dianping
        imeituan
        com.suning.SuningEBuy
        openapp.jdmobile
        vipshop
        snssdk141
        ctrip
        suning
        qunariphone
        QunarAlipay
        qunaraphone
        yohobuy
        kaola
        agoda
        openapp.xzdz
        beibeiapp
        taobao
        tmall
        openjd
        jhs
        yhd
        wireless1688
        GomeEShop
        wbmain
        xhsdiscover
        douyin
        pinduoduo
        jdmobile
        tbopen
        pddopen
        mogujie
        koubei
        eleme
        youku
        gengmei
        airbnb
        alipays
        didicommon
        OneTravel
        farfetchCN
        farfetch
        snssdk1112
        snssdk1128
        miguvideo
        kfcapplinkurl
        iqiyi
        uclink
        app.soyoung
    
```
### 3.1.2 Android 工程环境配置
#### 3.1.2.1 权限配置
```java
```
#### 3.1.2.2 FileProvider配置
适配Anroid7.0以及以上,请在AndroidManifest中添加如下代码:
如果支持库是support
```java
    
```
如果支持库为androidx
```java
    
```
在res/xml目录下(如果xml目录不存在需要手动创建),新建xml文件adsuyi_file_paths,在该文件中加入如下配置,如果存在相同android:authorities的provider,请将paths标签中的路劲配置到自己的xml文件中:
```java
    
    
```
#### 3.1.2.3 网络配置 
需要在 AndroidManifest.xml 添加依赖声明uses-library android:name="org.apache.http.legacy" android:required="false", 且 application标签中添加 android:usesCleartextTraffic="true",适配网络http请求,否则 SDK可能无法正常工作,接入代码示例如下:
```java
    
    ... ...
```
#### 3.1.2.4 混淆配置
可以参考demo中proguard-rules.pro相关配置
## 3.2 iOS14适配
由于iOS14中对于权限和隐私内容有一定程度的修改,而且和广告业务关系较大,请按照如下步骤适配,如果未适配。不会导致运行异常或者崩溃等情况,但是会一定程度上影响广告收入。敬请知悉。
1. 应用编译环境升级至 Xcode 12.0 及以上版本;
2. 升级ADSuyiSDK 3.0.8及以上版本;
3. 设置SKAdNetwork和IDFA权限;
### 3.2.1 获取App Tracking Transparency授权(弹窗授权获取IDFA)
从 iOS 14 开始,在应用程序调用 App Tracking Transparency 向用户提跟踪授权请求之前,IDFA 将不可用。
1. 更新 Info.plist,添加 NSUserTrackingUsageDescription 字段和自定义文案描述。
   弹窗小字文案建议:
   - `获取标记权限向您提供更优质、安全的个性化服务及内容,未经同意我们不会用于其他目的;开启后,您也可以前往系统“设置-隐私 ”中随时关闭。`
   - `获取IDFA标记权限向您提供更优质、安全的个性化服务及内容;开启后,您也可以前往系统“设置-隐私 ”中随时关闭。`
```
NSUserTrackingUsageDescription
获取标记权限向您提供更优质、安全的个性化服务及内容,未经同意我们不会用于其他目的;开启后,您也可以前往系统“设置-隐私 ”中随时关闭
```
1. 向用户申请权限。
```
#import 
#import 
...
- (void)requestIDFA {
  [ATTrackingManager requestTrackingAuthorizationWithCompletionHandler:^(ATTrackingManagerAuthorizationStatus status) {
    // 无需对授权状态进行处理
  }];
}
// 建议启动App就获取权限或者请求广告前获取
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  	[self requestIDFA];
}
```
### 3.2.2 SKAdNetwork
SKAdNetwork 是接收iOS端营销推广活动归因数据的一种方法。
1. 将下列SKAdNetwork ID 添加到 info.plist 中,以保证 SKAdNetwork 的正确运行。根据对接平台添加相应SKAdNetworkID,若无对接平台SKNetworkID则无需添加。
```
SKAdNetworkItems
  
    // 穿山甲广告(ADSuyiBU)
    
      SKAdNetworkIdentifier
      238da6jt44.skadnetwork
    
    
      SKAdNetworkIdentifier
      22mmun2rn5.skadnetwork
    
    // 谷歌广告(ADSuyiGoogle)
    
      SKAdNetworkIdentifier
      cstr6suwn9.skadnetwork
    
    // Unity广告(ADSuyiUnity)
    
        SKAdNetworkIdentifier
        4DZT52R2T5.skadnetwork
    
    
        SKAdNetworkIdentifier
        bvpn9ufa9b.skadnetwork
    
    // 汇量广告(ADSuyiMTG)
    
      SKAdNetworkIdentifier
      KBD757YWX3.skadnetwork
    
    // 汇量广告 合作伙伴(ADSuyiMTG)
    
        SKAdNetworkIdentifier
        wg4vff78zm.skadnetwork
    
    
        SKAdNetworkIdentifier
        737z793b9f.skadnetwork
    
    
        SKAdNetworkIdentifier
        ydx93a7ass.skadnetwork
    
    
        SKAdNetworkIdentifier
        prcb7njmu6.skadnetwork
    
    
        SKAdNetworkIdentifier
        7UG5ZH24HU.skadnetwork
    
    
        SKAdNetworkIdentifier
        44jx6755aq.skadnetwork
    
    
        SKAdNetworkIdentifier
        2U9PT9HC89.skadnetwork
    
    
        SKAdNetworkIdentifier
        W9Q455WK68.skadnetwork
    
    
        SKAdNetworkIdentifier
        YCLNXRL5PM.skadnetwork
    
    
        SKAdNetworkIdentifier
        TL55SBB4FM.skadnetwork
    
    
        SKAdNetworkIdentifier
        8s468mfl3y.skadnetwork
    
    
        SKAdNetworkIdentifier
        GLQZH8VGBY.skadnetwork
    
    
        SKAdNetworkIdentifier
        c6k4g5qg8m.skadnetwork
    
    
        SKAdNetworkIdentifier
        mlmmfzh3r3.skadnetwork
    
    
        SKAdNetworkIdentifier
        4PFYVQ9L8R.skadnetwork
    
    
        SKAdNetworkIdentifier
        av6w8kgt66.skadnetwork
    
    
        SKAdNetworkIdentifier
        6xzpu9s2p8.skadnetwork
    
    
        SKAdNetworkIdentifier
        hs6bdukanm.skadnetwork
    
  
```
## 4.1 主SDK初始化
```dart
AdSuyiFlutterSdk.initSdk(appid: "appid");
```
## 4.2 开屏广告
```dart
class SplashPage extends StatefulWidget {
  @override
  State createState() => _SplashState(); 
}
class _SplashState extends State {
  ADSuyiSplashAd _splashAd;
  @override
  Widget build(BuildContext context) {
    showSplashAd();
    return Scaffold(
      appBar: AppBar(
        title: Text("Splash"),
      ),
      body: Center(
      ),
    );
  }
  // 开屏
  // 显示开屏广告请保证当时app内没有其他地方显示开屏广告,否则会有冲突
  void showSplashAd() {
    if(_splashAd != null) {
      return;
    }
    _splashAd = ADSuyiSplashAd(posId: "posid", imgName: "splash_placeholder");
    _splashAd.onClosed = () {
      print("开屏广告关闭了");
      // 在加载失败和关闭回调后关闭广告
      releaseSplashAd();
    };
    _splashAd.onFailed = () {
      print("开屏广告失败了");
      // 在加载失败和关闭回调后关闭广告
      releaseSplashAd();
    };
    _splashAd.onExposed = () { print("开屏广告曝光了"); };
    _splashAd.onSucced = () { print("开屏广告成功了"); };
    _splashAd.onClicked = () { print("开屏广告点击了"); };
    _splashAd.loadAndShow();
  }
  void releaseSplashAd() {
    _splashAd?.release();
    _splashAd = null;
  }
  @override
  void dispose() {
    releaseSplashAd();
    super.dispose();
  }
}
```
## 4.3 横幅广告(banner)
```dart
class BannerPage extends StatefulWidget {
  @override
  State createState() => _BannerState();
}
class _BannerState extends State {
  ADSuyiFlutterBannerAd _adSuyiFlutterBannerAd;
  bool _hasInitBanner = false;
  @override
  Widget build(BuildContext context) {
    if (_adSuyiFlutterBannerAd == null && _hasInitBanner == false) {
      MediaQueryData queryData = MediaQuery.of(context);
      _hasInitBanner = true;
      var width = queryData.size.width;
      var height = queryData.size.width / 320.0 * 50.0;
      _adSuyiFlutterBannerAd = ADSuyiFlutterBannerAd(posId: KeyManager.bannerPosid(), width: width, height: height);
      _adSuyiFlutterBannerAd.loadAndShow();
      _adSuyiFlutterBannerAd.onSucced = () {
        print("横幅广告加载成功");
      };
      _adSuyiFlutterBannerAd.onFailed = () {
        removeBannerAd();
        print("横幅广告加载失败");
      };
      _adSuyiFlutterBannerAd.onClicked = () {
        print("横幅广告点击");
      };
      _adSuyiFlutterBannerAd.onExposed = () {
        print("横幅广告渲染成功");
      };
      _adSuyiFlutterBannerAd.onClosed = () {
        removeBannerAd();
        print("横幅广告关闭成功");
      };
    }
    return Scaffold(
        appBar: AppBar(
          title: Text("BannerPage"),
        ),
        body: Center(child: (_adSuyiFlutterBannerAd == null ? Text("banner广告已关闭") : ADSuyiWidget(adView: _adSuyiFlutterBannerAd) ))
    );
  }
  void removeBannerAd() {
    setState(() {
      releaseBannerAd();
    });
  }
  void releaseBannerAd() {
    _adSuyiFlutterBannerAd?.release();
    _adSuyiFlutterBannerAd = null;
  }
  @override
  void dispose() {
    releaseBannerAd();
    super.dispose();
  }
}
```
## 4.4 全屏视频广告
```dart
class FullScreenPage extends StatefulWidget {
  @override
  State createState() => FullScreenState();
}
class FullScreenState extends State {
  ADSuyiFullScreenVodAd _fullScreenVodAd;
  @override
  Widget build(BuildContext context) {
    showFullScreenVodAd();
    return Scaffold(
      appBar: AppBar(
        title: Text("FullScreenVodAd"),
      ),
      body: Center(
      ),
    );
  }
  // 全屏视频
  // 显示全屏视频广告请保证当时app内没有其他地方显示全屏视频广告,否则会有冲突
  void showFullScreenVodAd() {
    if(_fullScreenVodAd != null) {
      return;
    }
    _fullScreenVodAd = ADSuyiFullScreenVodAd(posId: KeyManager.fullScreenPosid());
    _fullScreenVodAd.onClicked = () {
      print("全屏视频广告关闭了");
    };
    _fullScreenVodAd.onFailed = () {
      print("全屏视频广告失败了");
      releaseFullScreenVodAd();
    };
    _fullScreenVodAd.onExposed = () {
      print("全屏视频广告曝光了");
    };
    _fullScreenVodAd.onSucced = () {
      print("全屏视频广告成功了");
      playFullScreenVodAd();
    };
    _fullScreenVodAd.onClicked = () {
      print("全屏视频广告点击了");
    };
    _fullScreenVodAd.onRewarded = () {
      print("全屏视频广告激励达成");
    };
    _fullScreenVodAd.onClosed = () {
      print("全屏视频广告关闭");
      releaseFullScreenVodAd();
    };
    _fullScreenVodAd.load();
  }
  void releaseFullScreenVodAd() {
    _fullScreenVodAd?.release();
    _fullScreenVodAd = null;
  }
  void playFullScreenVodAd() {
    _fullScreenVodAd.show();
  }
  @override
  void dispose() {
    releaseFullScreenVodAd();
    super.dispose();
  }
}
```
## 4.5 插屏广告
```dart
class InterPage extends StatefulWidget {
  @override
  State createState() => _InterState();
}
class _InterState extends State {
  ADSuyiIntertitialAd _interAd;
  @override
  Widget build(BuildContext context) {
    showInterAd();
    return Scaffold(
      appBar: AppBar(
        title: Text("Intertitial"),
      ),
      body: Center(
      ),
    );
  }
  // 插屏
  // 显示插屏广告请保证当时app内没有其他地方显示插屏广告,否则会有冲突
  void showInterAd() {
    if(_interAd != null) {
      return;
    }
    _interAd = ADSuyiIntertitialAd(posId: KeyManager.interPosid());
    _interAd.onClicked = () {
      print("插屏广告关闭了");
    };
    _interAd.onFailed = () {
      print("插屏广告失败了");
      releaseInterAd();
    };
    _interAd.onExposed = () {
      print("插屏广告曝光了");
    };
    _interAd.onSucced = () {
      print("插屏广告成功了");
      playInterAd();
    };
    _interAd.onClicked = () {
      print("插屏广告点击了");
    };
    _interAd.onRewarded = () {
      print("插屏广告激励达成");
    };
    _interAd.onClosed = () {
      print("插屏广告关闭");
      releaseInterAd();
    };
    _interAd.load();
  }
  void releaseInterAd() {
    _interAd?.release();
    _interAd = null;
  }
  void playInterAd() {
    _interAd.show();
  }
  @override
  void dispose() {
    releaseInterAd();
    super.dispose();
  }
}
```
## 4.6 信息流广告
```dart
class NativePage extends StatefulWidget {
  @override
  State createState() => NativeState();
}
class NativeState extends State {
  ADSuyiFlutterNativeAd _nativeAd;
  List _items = List.generate(10, (i) => i);
  ScrollController _scrollController = ScrollController();
  @override
  void initState() {
    super.initState();
    _scrollController.addListener(() {
      if (_scrollController.position.pixels == _scrollController.position.maxScrollExtent) {
        _getAdData();
      }
    });
  }
  _getAdData() async {
    _nativeAd.load();
  }
  void createNativeAd(BuildContext context) {
    if(_nativeAd == null) {
      MediaQueryData queryData = MediaQuery.of(context);
      var width = queryData.size.width;
      _nativeAd = ADSuyiFlutterNativeAd(posId: KeyManager.nativePosid(), width: width);
      _nativeAd.onReceived = (ADSuyiFlutterNativeAdView adView) {
        setState(() {
          var adWidget = ADSuyiWidget(adView: adView);
          adView.onClosed = () {
            setState(() {
              _items.remove(adWidget);
              adView.release();
            });
          };
          adView.onExposed = () {
          };
          _items.add(adWidget);
          _items.addAll(List.generate(1, (i) => i));
        });
      };
    }
  }
  @override
  Widget build(BuildContext context) {
    createNativeAd(context);
    return Scaffold(
      appBar: AppBar(
        title: Text("Native"),
      ),
      body: Center(
        child: ListView.builder(
          itemCount: _items.length,
          controller: _scrollController,
          itemBuilder: (BuildContext context, int index) {
            final item = _items[index];
            if (item is Widget) {
              return item;
            } else {
              return Container(
                width: 300,
                height: 150,
                child: Text("Cell", style: TextStyle(fontSize: 75))
              );
            }
          }
        ),
      ),
    );
  }
  
  @override
  void dispose() {
    for (var item in _items) {
      if (item is ADSuyiFlutterNativeAdView) {
        item.release();
      }
    }
    _nativeAd.release();
    _nativeAd = null;
    super.dispose();
  }
}
```
## 4.7 激励视频广告
```dart
class RewardPage extends StatefulWidget {
  
  @override
  State createState() => _RewardState();
}
class _RewardState extends State {
  ADSuyiRewardAd _rewardAd;
  @override
  Widget build(BuildContext context) {
    showRewardAd();
    return Scaffold(
      appBar: AppBar(
        title: Text("Reward"),
      ),
      body: Center(
      ),
    );
  }
  void showRewardAd() {
    if(_rewardAd != null) {
      return;
    }
    _rewardAd = ADSuyiRewardAd(posId: KeyManager.rewardPosid());
    _rewardAd.onClicked = () {
      print("激励视频广告关闭了");
    };
    _rewardAd.onFailed = () {
      print("激励视频广告失败了");
      releaseRewardAd();
    };
    _rewardAd.onExposed = () {
      print("激励视频广告曝光了");
    };
    _rewardAd.onSucced = () {
      print("激励视频广告成功了");
      playRewardAd();
    };
    _rewardAd.onClicked = () {
      print("激励视频广告点击了");
    };
    _rewardAd.onRewarded = () {
      print("激励视频广告激励达成");
    };
    _rewardAd.onClosed = () {
      print("激励视频广告关闭");
      releaseRewardAd();
    };
    _rewardAd.load();
  }
  void releaseRewardAd() {
    _rewardAd?.release();
    _rewardAd = null;
  }
  void playRewardAd() {
    _rewardAd.show();
  }
  @override
  void dispose() {
    releaseRewardAd();
    super.dispose();
  }
}
```