flutter_screen_lock 1.1.0

Provides the ability to lock the screen on ios and android. Biometric authentication can be used in addition to passcode.

Flutter Screen Lock

This Flutter plugin provides an feature for screen lock. Enter your passcode to unlock the screen. You can also use biometric authentication as an option.

Features

• Any number of digits can be specified
• You can change Cancel and Delete text
• The UI expands and contracts according to the size of the device
• You can disable cancellation
• You can use biometrics
• Biometrics can be displayed on first launch

Usage

You can easily lock the screen with the following code.
To unlock, enter correctString.

Simple

import 'package:flutter_screen_lock/flutter_screen_lock.dart';

showLockScreen(
  context: context,
  correctString: '1234',
);

Change digits

Default 4 digits can be changed. Change the correctString accordingly.

import 'package:flutter_screen_lock/flutter_screen_lock.dart';

showLockScreen(
  context: context,
  digits: 6,
  correctString: '123456',
);

Use local_auth

Specify canBiometric and biometricFunction. biometricFunction

Add local_auth processing to biometricFunction. See the following page for details.

https://pub.dev/packages/local_auth

import 'package:flutter_screen_lock/flutter_screen_lock.dart';

showLockScreen(
  context: context,
  correctString: '1234',
  canBiometric: true,
  biometricFunction: (context) async {
    LocalAuthentication localAuth = LocalAuthentication();
    bool didAuthenticate =
        await localAuth.authenticateWithBiometrics(
            localizedReason:
                'Please authenticate to show account balance');
    if (didAuthenticate) {
      Navigator.of(context).maybePop();
    }
  },
);

Open biometric first

add option showBiometricFirst.

showLockScreen(
  context: context,
  correctString: '1234',
  canBiometric: true,
  showBiometricFirst: true,
  biometricFunction: (context) async {
    LocalAuthentication localAuth = LocalAuthentication();
    bool didAuthenticate =
        await localAuth.authenticateWithBiometrics(
            localizedReason:
                'Please authenticate to show account balance');
    if (didAuthenticate) {
      Navigator.of(context).maybePop();
    }
  },
);

Can't cancel

This is the case where you want to force authentication when the app is first launched.

showLockScreen(
  context: context,
  correctString: '1234',
  canCancel: false,
);

Customize text

You can change Cancel and Delete text. We recommend no more than 6 characters at this time.

showLockScreen(
  context: context,
  correctString: '1234',
  cancelText: 'Close',
  deleteText: 'Remove',
);

Verifycation passcode

use showConfirmPasscode function.

showConfirmPasscode(
  context: context,
  confirmTitle: 'This is the second input.',
  onCompleted: (context, verifyCode) {
    // verifyCode is verified passcode
    print(verifyCode);
    // Please close yourself
    Navigator.of(context).maybePop();
  },
)