zk_finger 2.0.1 
zk_finger: ^2.0.1 copied to clipboard
The zk_finger plugin is used for supporting fingerprint device of zkecto with enrolling and verification feature.
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:zk_finger/finger_status.dart';
import 'package:zk_finger/finger_status_type.dart';
import 'package:zk_finger/zk_finger.dart';
void main() => runApp(MaterialApp(home: MyApp()));
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String? _platformVersion = 'Unknown';
TextEditingController _registerationCodeController =
TextEditingController(text: "DEVD6586");
TextEditingController _biometricController = TextEditingController(
text:
'''H4sIAAAAAAAAAO3K8U+UZQAH8O87773jvJMnBM6VySTM1hF4ptMVXbVTHjo7zDiC0QwKmtODjgQC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''');
String? score;
String? verifiedId;
@override
void initState() {
super.initState();
initPlatformState();
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
String? platformVersion;
// Platform messages may fail, so we use a try/catch PlatformException.
try {
platformVersion = await ZkFinger.platformVersion;
} on PlatformException {
platformVersion = 'Failed to get platform version.';
}
ZkFinger.imageStream.receiveBroadcastStream().listen(mapFingerImage);
ZkFinger.statusChangeStream.receiveBroadcastStream().listen(updateStatus);
// If the widget was removed from the tree while the asynchronous platform
// message was in flight, we want to discard the reply rather than calling
// setState to update our non-existent appearance.
if (!mounted) return;
setState(() {
_platformVersion = platformVersion;
});
}
Uint8List? fingerImages;
String statusText = '';
String stringLengthBytes = '';
FingerStatus? fingerStatus;
FingerStatusType? tempStatusType;
void updateStatus(dynamic value) {
Map<dynamic, dynamic> statusMap = value as Map<dynamic, dynamic>;
FingerStatusType statusType =
FingerStatusType.values[statusMap['fingerStatus']];
fingerStatus = FingerStatus(
statusMap['message'], statusType, statusMap['id'], statusMap['data']);
print(fingerStatus);
print(tempStatusType);
if (statusType == tempStatusType &&
tempStatusType == FingerStatusType.CAPTURE_ERROR) {
//ignore capture error when finger device get stucked
} else {
tempStatusType = statusType;
setState(() {
setBiometricBase64TextField();
statusText = statusText +
fingerStatus!.statusType.toString() +
" Id: " +
fingerStatus!.id +
'\n';
});
}
}
void setBiometricBase64TextField() {
if (fingerStatus!.statusType == FingerStatusType.ENROLL_SUCCESS) {
resetFieldsData();
_biometricController.text = fingerStatus!.data;
verifiedId = fingerStatus!.id + ' enroll';
} else if (fingerStatus!.statusType ==
FingerStatusType.ENROLL_ALREADY_EXIST) {
resetFieldsData();
score = fingerStatus!.data;
verifiedId = fingerStatus!.id + ' already enrolled';
} else if (fingerStatus!.statusType == FingerStatusType.VERIFIED_SUCCESS) {
resetFieldsData();
verifiedId = fingerStatus!.id + ' verified';
score = fingerStatus!.data;
} else if (fingerStatus!.statusType == FingerStatusType.FINGER_REGISTERED) {
resetFieldsData();
verifiedId = fingerStatus!.id + ' register';
_biometricController.text = fingerStatus!.data;
} else if (fingerStatus!.statusType == FingerStatusType.ENROLL_CONFIRM) {
resetFieldsData();
verifiedId = fingerStatus!.id + ' confirm';
_biometricController.text = 'Current Confirm Index ${fingerStatus!.data}';
}
stringLengthBytes = 'Text Size: ${_biometricController.text.length} bytes';
statusText = statusText + stringLengthBytes + '\n';
}
void resetFieldsData() {
_biometricController.text = '';
verifiedId = '';
score = '';
}
void mapFingerImage(dynamic imageBytes) {
setState(() {
fingerImages = imageBytes;
});
}
bool? isDeviceSupported;
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: Center(
child: Row(
children: <Widget>[
Column(
children: <Widget>[
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
bool? isSupported = await ZkFinger.isDeviceSupported();
setState(() {
isDeviceSupported = isSupported;
statusText = statusText +
"Is zkteco Finger Print Supported: $isDeviceSupported";
});
},
child: Text(
'Is Device Supported',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.openConnection(isLogEnabled: false);
},
child: Text(
'Open Connection',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.startListen(
userId: _registerationCodeController.text);
},
child: Text(
'Start Listening',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.enroll(
userId: _registerationCodeController.text);
},
child: Text(
'Enroll Finger',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.verify(
userId: _registerationCodeController.text);
},
child: Text(
'Verify Finger',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.clearFingerDatabase();
},
child: Text(
'Clear finger\nDatabase',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.stopListen();
},
child: Text(
'Stop Listening',
style: TextStyle(color: Colors.white),
),
),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.closeConnection();
},
child: Text(
'Close Connection',
style: TextStyle(color: Colors.white),
),
),
_getFingerStatusImage()
],
),
fingerImages != null
? Image.memory(
fingerImages!,
width: MediaQuery.of(context).size.width * .2,
height: double.infinity,
fit: BoxFit.contain,
)
: Text('Running on: $_platformVersion\n'),
Container(
width: MediaQuery.of(context).size.width * .3,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
TextFormField(
controller: _registerationCodeController,
decoration:
InputDecoration(labelText: "Registeration Code"),
),
Text('Biometric Base64 Text:',
style: TextStyle(fontSize: 14, color: Colors.blue)),
TextFormField(
controller: _biometricController,
maxLines: null,
style: TextStyle(fontSize: 7)),
Text('Score: $score',
style: TextStyle(fontSize: 14, color: Colors.blue)),
Text('Verified Id: $verifiedId',
style: TextStyle(fontSize: 14, color: Colors.blue)),
ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Colors.blue,
elevation: 5,
padding: const EdgeInsets.all(12.0),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
),
onPressed: () async {
await ZkFinger.registerFinger(
userId: _registerationCodeController.text,
dataBase64: _biometricController.text);
},
child: Text(
'Register User Biometric Base64 Data',
style: TextStyle(color: Colors.white),
),
),
],
),
),
Container(
width: MediaQuery.of(context).size.width * .3,
child: Text('statusText: $statusText'))
],
),
),
),
);
}
Widget _getFingerStatusImage() {
if (fingerStatus == null) {
return SvgPicture.asset(
'assets/finger.svg',
color: Colors.lime,
width: 70,
height: 120,
);
}
Color svgColor = Colors.black12;
switch (fingerStatus!.statusType) {
case FingerStatusType.STARTED_ALREADY:
case FingerStatusType.STARTED_SUCCESS:
svgColor = Colors.blue;
break;
case FingerStatusType.VERIFIED_START_FIRST:
case FingerStatusType.VERIFIED_SUCCESS:
svgColor = Colors.pink;
break;
case FingerStatusType.ENROLL_ALREADY_EXIST:
case FingerStatusType.ENROLL_CONFIRM:
case FingerStatusType.ENROLL_STARTED:
case FingerStatusType.ENROLL_SUCCESS:
svgColor = Colors.deepOrange;
break;
case FingerStatusType.STOPPED_ALREADY:
case FingerStatusType.STOPPED_SUCCESS:
svgColor = Colors.cyan;
break;
case FingerStatusType.FINGER_REGISTERED:
svgColor = Colors.green;
break;
case FingerStatusType.FINGER_CLEARED:
svgColor = Colors.yellow;
break;
case FingerStatusType.STARTED_FAILED:
case FingerStatusType.STARTED_ERROR:
case FingerStatusType.VERIFIED_FAILED:
case FingerStatusType.ENROLL_FAILED:
case FingerStatusType.STOPPED_ERROR:
case FingerStatusType.CAPTURE_ERROR:
svgColor = Colors.redAccent;
break;
default:
svgColor = Colors.black38;
}
return SvgPicture.asset(
'assets/finger.svg',
color: svgColor,
width: 70,
height: 120,
);
}
}Metadata
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Metadata
The zk_finger plugin is used for supporting fingerprint device of zkecto with enrolling and verification feature.
Repository (GitHub)
View/report issues
Documentation
License
BSD-3-Clause (LICENSE)
