Flutter Pass Code Page or Pin Code Page Package

This package gives you beautiful pass code page for using both android and ios. <br/><br/>

flutter platform pub package License: MIT

Demo

Finger Print Usage

First, be sure you should ensure that you add the local_auth package as a dependency. And Please read local_auth all integration details. 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 Note that local_auth plugin requires the use of a FragmentActivity as opposed to Activity. This can be easily done by switching to use FlutterFragmentActivity as opposed to FlutterActivity in your manifest (or your own Activity class if you are extending the base class).

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: '^1.0.6'

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 = false;

  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();
          }));
        });
  }
}

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

Libraries

flutter_lock_screen

Dart

VM

dart:ffi
Foreign Function Interface for interoperability with the C programming language. [...]

Web

dart:html
HTML elements and other resources for web-based applications that need to interact with the browser and the DOM (Document Object Model). [...]
dart:js
Low-level support for interoperating with JavaScript. [...]
dart:js_util
Utility methods to efficiently manipulate typed JSInterop objects in cases where the name to call is not known at runtime. You should only use these methods when the same effect cannot be achieved with @JS annotations. These methods would be extension methods on JSObject if Dart supported extension methods.