alive_flutter_plugin 0.2.2 copy "alive_flutter_plugin: ^0.2.2" to clipboard
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A new Flutter plugin.

活体检测 #

根据提示做出相应动作,SDK 实时采集动态信息,判断用户是否为活体、真人

平台支持(兼容性) #

Android iOS
适用版本区间:4.4以上 适用版本区间:9 - 14

环境准备 #

CocoaPods 安装教程

资源引入/集成 #

在 pubspec.yaml 中添加

dependencies:
    alive_flutter_plugin: ^0.2.0

项目开发配置 #

Android 配置

在 flutter 工程对应的 android/app/build.gradle 文件的 android 域中添加

repositories {
    flatDir {
        dirs project(':alive_flutter_plugin').file('libs')
    }
}

插件依赖于相机权限,需要动态申请!可以引入 permission_handler: ^8.1.6 插件动态申请 camera 权限

//当前权限
Permission permission = Permission.camera;
//权限的状态
PermissionStatus status = await permission.status;
if (status.isUndetermined) {
  //发起权限申请
  PermissionStatus status = await permission.request();
  if (status.isGranted) {
    return true;
  }
} else {
  return true;
}

release 包需要添加混淆规则

-keep class com.netease.nis.alivedetected.entity.*{*;}
-keep class com.netease.nis.alivedetected.AliveDetector  {
    public <methods>;
    public <fields>;
}
-keep class com.netease.nis.alivedetected.DetectedEngine{
    native <methods>;
}
-keep class com.netease.nis.alivedetected.NISCameraPreview  {
    public <methods>;
}
-keep class com.netease.nis.alivedetected.DetectedListener{*;}
-keep class com.netease.nis.alivedetected.ActionType{ *;}

iOS 配置

在 flutter 工程对应的 example/ios/Runner/info.plist 里 ,添加

<key>NSPhotoLibraryUsageDescription</key> 
<string></string> 
<key>NSCameraUsageDescription</key>
<string></string>

调用示例 #

class LiveDetectExample extends StatefulWidget {
  @override
  _LiveDetectExampleState createState() => _LiveDetectExampleState();
}

class _LiveDetectExampleState extends State<LiveDetectExample> {
  final AliveFlutterPlugin aliveFlutterPlugin = new AliveFlutterPlugin();

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      aliveFlutterPlugin.init("易盾业务id", 30);
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('易盾活体检测'),
        ),
        body: new SingleChildScrollView(
          physics: BouncingScrollPhysics(),
          child: new Center(
            child: Center(
              child: new Column(
                children: [showFaceImageWidget(), startDetectButton()],
              ),
            ),
          ),
        ),
      ),
    );
  }

  Widget showFaceImageWidget() {
    if (defaultTargetPlatform == TargetPlatform.android) {
      return new Center(
        child: Container(
            width: 300,
                height: 400,
                child: PlatformViewLink(
                  viewType: "platform-view-alive",
                  surfaceFactory: (context, controller) {
                    return AndroidViewSurface(
                      controller: controller as AndroidViewController,
                      gestureRecognizers: const <
                          Factory<OneSequenceGestureRecognizer>>{},
                      hitTestBehavior: PlatformViewHitTestBehavior.opaque,
                    );
                  },
                  onCreatePlatformView: (params) {
                    return PlatformViewsService.initExpensiveAndroidView(
                      id: params.id,
                      viewType: "platform-view-alive",
                      layoutDirection: TextDirection.ltr,
                      creationParams: {"width": 300, "height": 400, "backgroundColor":"#ffffff"},
                      creationParamsCodec: const StandardMessageCodec(),
                      onFocus: () {
                        params.onFocusChanged(true);
                      },
                    )
                      ..addOnPlatformViewCreatedListener(
                          params.onPlatformViewCreated)
                      ..create();
                  },
                ),
                alignment: Alignment.center),
      );
    } else if (defaultTargetPlatform == TargetPlatform.iOS) {
      return new Center(
        child: Container(
          width: 200,
          height: 200,
          decoration: BoxDecoration(
              borderRadius: BorderRadius.all(Radius.circular(100))),
          child: UiKitView(
            viewType: 'com.flutter.alive.imageview',
            creationParams: {
              "width": "200",
              "height": "200",
              "radius": "100",
            },
            //参数的编码方式
            creationParamsCodec: const StandardMessageCodec(),
          ),
        ),
      );
    }
    return Text('$defaultTargetPlatform is not yet supported by this plugin');
  }

  Widget startDetectButton() {
    return new Container(
      child: SizedBox(
        child: new TextButton(
          onPressed: () {
            startLive();
          },
          child: Text("开始检测"),
        ),
        width: double.infinity,
        height: 49,
      ),
      margin: EdgeInsets.fromLTRB(40, 5, 40, 5),
    );
  }

  void startLive() {
    aliveFlutterPlugin.startLiveDetect().then((value) {
      /**
       * action表示返回的动作,动作状态表示:0——正面,1——右转,2——左转,3——张嘴,4——眨眼。
       */
      var method = value["method"];
      var data = value["data"];
      print("当前阶段为:" + method);
      print("下发的动作序列为:" + data["actions"]);
    });
  }
}

更多使用场景请参考 demo

SDK 方法说明 #

1 初始化活体检测 #

代码说明:

// 初始化对象
final AliveFlutterPlugin aliveFlutterPlugin = new AliveFlutterPlugin(); 
aliveFlutterPlugin.init("businessID", “timeout”);

参数说明:

  • options 基础参数:

    参数 类型 是否必填 默认值 描述
    businessID String 易盾分配的业务id
    timeout int 30秒 活体检测超时时间
    isDebug bool false 是否打开debug开关

2 开始活体检测验证 #

代码说明:

aliveFlutterPlugin.startLiveDetect().then((value) {
    var method = value["method"];
    var data = value["data"];
    var actions = data["actions"];
});

回调参数说明

  • 回调参数说明

    参数 类型 描述
    method String 值为onConfig,表示当前为动作下发阶段
    actions String 所有待检测动作 0:正视前方 1:向右转头 2:向左转头 3:张嘴动作 4:眨眼动作,例如:actions = "123",表示需要做向右转头、向左转头、张嘴动作三个动作

3 停止活体检测 #

代码说明:

aliveFlutterPlugin.stopLiveDetect();

4 检测状态监听 #

代码说明:

var eventChannel = const EventChannel("yd_alive_flutter_event_channel")

eventChannel.receiveBroadcastStream().listen(_onData, onError: _onError);
   
void _onData(response) {
    if (response is Map) {
        setState(() {
            var method = response["method"];
            var data = response["data"];
            if (method == "onChecking") {
                _currentStep = data["currentStep"];
                _result = data["message"];
            } else if (method == "onChecked") {
                _result = data["message"];
                _currentStep = 0;
                stopLive();
            } else if (method == "onError") {
             _result = response["message"];
            }
         }
    }
  • response 监听回调类型说明

    method 所处阶段 data中的字段说明
    onReady 初始化引擎 initResult:引擎初始化结果 true表现引擎初始化成功、false表示失败
    onChecking 检测中 currentStep:当前检测动作 0:正视前方 1:向右转头 2:向左转头 3:张嘴动作 4:眨眼动作 message:动作描述信息
    onChecked 检测完成 isPassed:是否通过 token:校验码,用于二次校验
    onError 发生异常 code:错误码 message:错误信息
    overTime 超时,超过设置的限制时间

5 资源释放 #

Android 特有,建议放在 dispose 生命周期

代码说明:

void dispose() {
    if (defaultTargetPlatform == TargetPlatform.android) {
      //android需要释放资源,否则会引发内存泄露
      aliveFlutterPlugin.destroy();
    }
    super.dispose();
  }

退出有残影的话建议 MaterialApp 外面用 WillPopScope 包装,并在 WillPopScope 的 onWillPop 回调中调用 stopLiveDetect 和 destroy

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A new Flutter plugin.

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Dependencies

flutter

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