flutter_lock_screen
This package gives you beautiful pass code page for using both android and ios.
Finger Print Usage
First, be sure you should ensure that you add the local_auth package as a dependency.
https://pub.dartlang.org/packages/local_auth
iOS Integration
Note that this plugin works with both TouchID and FaceID. However, to use the latter, you need to also add:
<key>NSFaceIDUsageDescription</key>
<string>Why is my app authenticating using face id?</string>
to your Info.plist file. Failure to do so results in a dialog that tells the user your app has not been updated to use TouchID.
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>
Usage
It is really easy to use!
You should ensure that you add the flutter_lock_screen as a dependency in your flutter project.
dependencies:
flutter_lock_screen: '^1.0.5'
Than you can use it with below example.
import 'package:flutter/material.dart';
import 'package:local_auth/local_auth.dart';
import 'package:testapp/empty_page.dart';
import 'package:flutter/services.dart';
class PassCodeScreen extends StatefulWidget {
PassCodeScreen({Key key, this.title}) : super(key: key);
final String title;
@override
_PassCodeScreenState createState() => new _PassCodeScreenState();
}
class _PassCodeScreenState extends State<PassCodeScreen> {
bool isFingerprint;
Future<Null> biometrics() async {
final LocalAuthentication auth = new LocalAuthentication();
bool authenticated = false;
try {
authenticated = await auth.authenticateWithBiometrics(
localizedReason: 'Scan your fingerprint to authenticate',
useErrorDialogs: true,
stickyAuth: false);
} on PlatformException catch (e) {
print(e);
}
if (!mounted) return;
if (authenticated) {
setState(() {
isFingerprint = true;
});
}
}
@override
Widget build(BuildContext context) {
var myPass = [1, 2, 3, 4];
return LockScreen(
title: "This is Screet ",
passLength: myPass.length,
bgImage: "images/pass_code_bg.jpg",
fingerPrintImage: "images/fingerprint.png",
showFingerPass: true,
fingerFunction: biometrics,
fingerVerify: isFingerprint,
borderColor: Colors.white,
showWrongPassDialog: true,
wrongPassContent: "Wrong pass please try again.",
wrongPassTitle: "Opps!",
wrongPassCancelButtonText: "Cancel",
passCodeVerify: (passcode) async {
for (int i = 0; i < myPass.length; i++) {
if (passcode[i] != myPass[i]) {
return false;
}
}
return true;
},
onSuccess: () {
Navigator.of(context).pushReplacement(
new MaterialPageRoute(builder: (BuildContext context) {
return EmptyPage();
}));
});
}
}
