Flutter人脸识别插件mnc_identifier_face的使用

mnc_identifier_face 是一个用于在Flutter应用中进行活体检测的插件，它利用MLKit面部识别技术来检测捕捉点是否存在真人。

安装

Android

该插件要求Android SDK 21或更高版本。

iOS

该插件要求iOS 11.0或更高版本。需要在Info.plist文件中添加以下代码以请求相机和照片库权限：

<key>NSPhotoLibraryUsageDescription</key>
<string>(Reason to use Photo Library)</string>
<key>NSCameraUsageDescription</key>
<string>(Reason to use camera access)</string>

请确保替换(Reason to use Photo Library)和(Reason to use camera access)为实际的理由说明。

使用方法

首先，导入必要的包：

import 'package:mnc_identifier_face/mnc_identifier_face.dart';
import 'package:mnc_identifier_face/model/liveness_detection_result_model.dart';

然后，在您的应用程序中调用以下函数开始活体检测：

Future<void> startDetection() async {
  try {
    LivenessDetectionResult livenessResult =
        await MncIdentifierFace().startLivenessDetection();
    debugPrint("result is $livenessResult");
  } catch (e) {
    debugPrint('Something goes unexpected with error is $e');
  }
}

示例Demo

以下是完整的示例代码，展示了如何在Flutter应用中集成mnc_identifier_face插件：

import 'package:flutter/material.dart';
import 'package:mnc_identifier_face/mnc_identifier_face.dart';
import 'package:mnc_identifier_face/model/liveness_detection_result_model.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  LivenessDetectionResult? livenessResult;
  final _mncIdentifierFacePlugin = MncIdentifierFace();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Liveness Identifier Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text(livenessResult?.toJson().toString() ?? "Data still empty"),
              ElevatedButton(
                onPressed: () async {
                  livenessResult =
                      await _mncIdentifierFacePlugin.startLivenessDetection();
                  setState(() {});
                },
                child: const Text("START LIVENESS IDENTIFIER"),
              )
            ],
          ),
        ),
      ),
    );
  }
}