flutter 指纹识别/脸识别

AndroidManifest.xml

  <uses-permission android:name="android.permission.USE_FINGERPRINT"/>

gradle.properties

android.enableJetifier=true
android.useAndroidX=true

Info.plist

	<key>NSFaceIDUsageDescription</key>
	<string>我要校验你的FaceId,以登录应用</string>

local_auth_example.dart

import 'package:local_auth/auth_strings.dart';
import 'package:local_auth/local_auth.dart';

var localAuth = LocalAuthentication();

void authLocalAuth() async {
  //校验本地生物模块
  bool canCheckBiometrics = await localAuth.canCheckBiometrics;
  if (!canCheckBiometrics) {
    showToast("不支持各种生物模块");
    return;
  }
  var types = await localAuth.getAvailableBiometrics();
  print(types);

  if (types.isEmpty) {
    showToast('没有支持的生物模块');
    return;
  }

  try {
    bool result;
    final androidAuthMessages = AndroidAuthMessages(
      goToSettingsButton: "去设置开启",
      goToSettingsDescription: "因为你没有给予权限,所以要使用此功能需要去设置开启",
      cancelButton: "取消",
      signInTitle: "校验身份",
      fingerprintSuccess: "校验成功",
      fingerprintNotRecognized: "无法识别指纹。再试一次。",
      fingerprintHint: "请正确放置手指",
      fingerprintRequiredTitle: "您还没设置指纹,无法使用",
    );
    final iosAuthMessages = IOSAuthMessages(
      cancelButton: "取消",
      lockOut: "失败",
      goToSettingsButton: "去设置开启",
      goToSettingsDescription: "因为你没有给予权限,所以要使用此功能需要去设置开启",
    );
    if (types.contains(BiometricType.fingerprint)) {
      // 识别指纹
      result = await localAuth.authenticateWithBiometrics(
        localizedReason: "使用您的指纹来登录App",
        androidAuthStrings: androidAuthMessages,
        iOSAuthStrings: iosAuthMessages,
      );
    } else if (types.contains(BiometricType.face)) {
      result = await localAuth.authenticateWithBiometrics(
        localizedReason: "使用您的面部来登录App",
        androidAuthStrings: androidAuthMessages,
        iOSAuthStrings: iosAuthMessages,
      );
    } else if (types.contains(BiometricType.iris)) {
      result = await localAuth.authenticateWithBiometrics(
        localizedReason: "使用您的虹膜来登录App",
        androidAuthStrings: androidAuthMessages,
        iOSAuthStrings: iosAuthMessages,
      );
    }
    showToast(
      "识别结果 ${result == true ? "成功" : "失败"}",
      duration: const Duration(seconds: 3),
    );
  } on PlatformException catch (e) {
    /// can use [package:local_auth/auth_strings.dart]
    print(e.code);
    print(e.details);
    print(e.message);
    showToast("识别出错 ${e.code}");
  } catch (e) {
    showToast("识别出错 ${e.code}");
  }
}

MainActivity.java

package com.example.awesome_example;

import android.os.Bundle;

import io.flutter.app.FlutterFragmentActivity;
import io.flutter.plugins.GeneratedPluginRegistrant;

public class MainActivity extends FlutterFragmentActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    GeneratedPluginRegistrant.registerWith(this);
  }
}

pubspec.yaml

dependencies:
  local_auth: ^0.5.2+2