native_auth #

With this pack you can use the biometrics systems of Android and IOS devices.

Usage in Dart #

Import the relevant file:

import 'package:native_auth/native_auth.dart';

How to use #

final response = await Auth.isAuthenticate();

response it's an enum authResponse containing the statuses:

error, success and noAuth

success means the user is authenticated. noAuth means the user is no authenticated. error means that it was not possible to request any biometrics.

IOS Integration #

Update your project's Info.plist file to include the FaceID permissions:

<key>NSFaceIDUsageDescription</key>
<string>Why is my app authenticating using face id?</string>

Android Integration #

Update your project's AndroidManifest.xml file to include the USE_FINGERPRINT permissions:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.app">
  <uses-permission android:name="android.permission.USE_FINGERPRINT"/>
<manifest>

Update your MainActivity.kt:

import io.flutter.embedding.android.FlutterFragmentActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant

class MainActivity: FlutterFragmentActivity() {
    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine)
    }
}

OR

Update your MainActivity.java:

import android.os.Bundle;
import io.flutter.app.FlutterFragmentActivity;
import io.flutter.plugins.flutter_plugin_android_lifecycle.FlutterAndroidLifecyclePlugin;
import io.flutter.plugins.localauth.LocalAuthPlugin;

public class MainActivity extends FlutterFragmentActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FlutterAndroidLifecyclePlugin.registerWith(
                registrarFor(
                        "io.flutter.plugins.flutter_plugin_android_lifecycle.FlutterAndroidLifecyclePlugin"));
        LocalAuthPlugin.registerWith(registrarFor("io.flutter.plugins.localauth.LocalAuthPlugin"));
    }
}