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Example :#1 [ Biometric ]
Example :#1 [ Biometric ]
Setup
Update the project's AndroidManifest.xml file to include the USE_FINGERPRINT permissions:
<uses-permission android:name="android.permission.USE_FINGERPRINT"/>
FlutterFragmentActivity as opposed to FlutterActivity in the java or kt
https://pub.dev/packages/local_auth/install
local_auth: ^0.6.3+4
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Example :#1[Biometric ]
Example :#1[Biometric ]
1.Code Here
Home.dart
import 'package:demo/auth.dart';
import 'package:flutter/material.dart';
class Home extends StatefulWidget {
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Home'),
actions: [
IconButton(
icon: Icon(Icons.exit_to_app),
iconSize: 20,
onPressed: () {
Navigator.pushReplacement(context, MaterialPageRoute(
builder: (context) => Auth()
));
})
],
),
);
}
}
......................
Auth.dart
import 'package:demo/home.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:local_auth/local_auth.dart';
class Auth extends StatefulWidget {
@override
_AuthState createState() => _AuthState();
}
class _AuthState extends State<Auth> {
LocalAuthentication localAuthentication = LocalAuthentication();
bool _checkBio = false;
bool _isBioFinger = false;
@override
void initState() {
super.initState();
_checkBioMetric();
_listBioAndFindFingerType();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Auth'),
),
body: Center(
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
IconButton(
icon: Icon(
Icons.fingerprint,
),
iconSize: 100,
onPressed: startAuth)
],
),
),
),
);
}
void _checkBioMetric() async {
try {
final bio = await localAuthentication.canCheckBiometrics;
setState(() {
_checkBio = bio;
});
print(' BioMetric = $_checkBio');
} catch (e) {}
}
void _listBioAndFindFingerType() async {
List<BiometricType> listType;
try {
listType = await localAuthentication.getAvailableBiometrics();
} on PlatformException catch (e) {
print(e.message);
}
print('list =$listType');
if (listType.contains(BiometricType.fingerprint)) {
setState(() {
_isBioFinger = true;
});
print('FingerPrint is $_isBioFinger');
}
}
void startAuth() async {
bool _isAuthenticated =false;
try {
_isAuthenticated = await localAuthentication.authenticateWithBiometrics(
localizedReason: 'Scan your fingerprint',
useErrorDialogs: true,
stickyAuth: true,
// androidAuthStrings: null,
// iOSAuthStrings: null
);
} on PlatformException catch (e) {
print(e.message);
}
if (_isAuthenticated) {
Navigator.pushReplacement(
context, MaterialPageRoute(builder: (c) => Home()));
}
}
}
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main.dart
import 'package:demo/auth.dart';
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Auth(),
);
}
}
2.
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11.
Test
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Example :#1.2 [ Fingerprint / Face unlock local authentication using flutter]
Example :#1.2 [ Fingerprint / Face unlock local authentication using flutter]
import 'package:flutter/material.dart';
import 'package:local_auth/local_auth.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Home(),
);
}
}
class Home extends StatefulWidget {
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
LocalAuthentication localAuthentication = LocalAuthentication();
bool canAuth = false;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Local Auth'),
),
body: Center(
child: Column(
children: [
RaisedButton(
child: Text('Check'),
onPressed: () async {
canAuth = await localAuthentication.canCheckBiometrics;
print(canAuth.toString());
}),
RaisedButton(
child: Text('Verify'),
onPressed: () async {
List<BiometricType> list = List();
try {
if (canAuth) {
list = await localAuthentication.getAvailableBiometrics();
if (list.length > 0) {
bool result =
await localAuthentication.authenticateWithBiometrics(
localizedReason:
'Please Enter your FingerPrint to unlock',
useErrorDialogs: true,
stickyAuth: true);
print('result is ${result}');
if (list.contains(BiometricType.fingerprint)) {
print('Fingerprint');
}
if (list.contains(BiometricType.iris)) {
print('iris');
}
if (list.contains(BiometricType.face)) {
print('Face unlock');
}
}
}
} catch (e) {}
})
],
),
),
);
}
}
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Example :#2 [Qr Code Scanner]
Example :#2 [Qr Code Scanner]
Library
https://pub.dev/packages/qr_code_scanner/install
qr_code_scanner: ^0.0.13
min 24
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Code Here
Happy Coding :)
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Example :#3[ Flutter: OCR Reader | Text Scanner]
Example :#3[ Flutter: OCR Reader | Text Scanner]
Library
https://pub.dev/packages/flutter_mobile_vision
flutter_mobile_vision: ^0.1.4+1
.............................
AndroidManifest.xml
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<activity android:name="io.github.edufolly.fluttermobilevision.barcode.BarcodeCaptureActivity" />
Code Here
import 'package:flutter/material.dart';
import 'package:flutter_mobile_vision/flutter_mobile_vision.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Home(),
);
}
}
class Home extends StatefulWidget {
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
bool isInitilized = false;
@override
void initState() {
FlutterMobileVision.start().then((value) {
isInitilized = true;
});
super.initState();
}
_startScan() async {
List<OcrText> list = List();
try {
FlutterMobileVision.read(
waitTap: true,
fps: 5,
multiple: true
);
for(OcrText text in list){
print('value is ${text.value}');
}
} catch (e) {}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('OCR Reader | Text Scanner App'),
),
floatingActionButton: FloatingActionButton(
child: Icon(Icons.camera_alt),
onPressed:()=> _startScan(),
),
);
}
}
Happy Coding :)
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Example :#4
Example :#4
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