flutter_document_reader_api_beta 0.0.28 
flutter_document_reader_api_beta: ^0.0.28 copied to clipboard
mobile.regulaforensics.comThis is a flutter module for Regula document reader. It allows you to easily scan documents, for example passport, using your phone's camera. Supports Android and iOS
import 'dart:convert';
import 'dart:io' as io;
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'dart:async';
import 'package:flutter/services.dart'
show EventChannel, PlatformException, rootBundle;
import 'package:flutter_document_reader_api_beta/document_reader.dart';
import 'package:image_picker/image_picker.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
Future<String> getImage() async {
setStatus("Processing image...");
return base64Encode(io.File(
(await ImagePicker().getImage(source: ImageSource.gallery)).path)
.readAsBytesSync());
}
Object setStatus(String s) => {setState(() => _status = s)};
String _status = "Loading...";
bool isReadingRfid = false;
String rfidUIHeader = "Reading RFID";
Color rfidUIHeaderColor = Colors.black;
String rfidDescription = "Place your phone on top of the NFC tag";
double rfidProgress = -1;
var _portrait = Image.asset('assets/images/portrait.png');
var _docImage = Image.asset('assets/images/id.png');
List<List<String>> _scenarios = [];
String _selectedScenario = "Mrz";
bool _canRfid = false;
bool _doRfid = false;
var printError =
(Object error) => print((error as PlatformException).message);
@override
void initState() {
super.initState();
initPlatformState();
EventChannel('flutter_document_reader_api/event/completion')
.receiveBroadcastStream()
.listen((jsonString) => this.handleCompletion(
DocumentReaderCompletion.fromJson(json.decode(jsonString))));
EventChannel('flutter_document_reader_api/event/database_progress')
.receiveBroadcastStream()
.listen(
(progress) => setStatus("Downloading database: " + progress + "%"));
}
void handleCompletion(DocumentReaderCompletion completion) {
if (isReadingRfid &&
(completion.action == DocReaderAction.CANCEL ||
completion.action == DocReaderAction.ERROR)) this.hideRfidUI();
if (isReadingRfid && completion.action == DocReaderAction.NOTIFICATION)
this.updateRfidUI(completion.results.documentReaderNotification);
if (completion.action ==
DocReaderAction.COMPLETE) if (isReadingRfid) if (completion
.results.rfidResult !=
1)
this.restartRfidUI();
else {
this.hideRfidUI();
this.displayResults(completion.results);
}
else
this.handleResults(completion.results);
}
void showRfidUI() {
// show animation
setState(() => isReadingRfid = true);
}
hideRfidUI() {
// show animation
this.restartRfidUI();
DocumentReader.stopRFIDReader();
setState(() {
isReadingRfid = false;
rfidUIHeader = "Reading RFID";
rfidUIHeaderColor = Colors.black;
});
}
restartRfidUI() {
setState(() {
rfidUIHeaderColor = Colors.red;
rfidUIHeader = "Failed!";
rfidDescription = "Place your phone on top of the NFC tag";
rfidProgress = -1;
});
}
updateRfidUI(results) {
if (results.code ==
eRFID_NotificationAndErrorCodes
.RFID_NOTIFICATION_PCSC_READING_DATAGROUP)
setState(() =>
rfidDescription = eRFID_DataFile_Type.getTranslation(results.number));
setState(() {
rfidUIHeader = "Reading RFID";
rfidUIHeaderColor = Colors.black;
rfidProgress = results.value / 100;
});
if (Platform.isIOS)
DocumentReader.setRfidSessionStatus(
rfidDescription + "\n" + results.value.toString() + "%");
}
customRFID() {
this.showRfidUI();
DocumentReader.readRFID();
}
usualRFID() {
setState(() => _doRfid = false);
DocumentReader.startRFIDReader();
}
Future<void> initPlatformState() async {
print(await DocumentReader.prepareDatabase("Full"));
setStatus("Initializing...");
ByteData byteData = await rootBundle.load("assets/regula.license");
print(await DocumentReader.initializeReader(base64.encode(byteData.buffer
.asUint8List(byteData.offsetInBytes, byteData.lengthInBytes))));
setStatus("Ready");
bool canRfid = await DocumentReader.isRFIDAvailableForUse();
setState(() => _canRfid = canRfid);
List<List<String>> scenarios = [];
var scenariosTemp =
json.decode(await DocumentReader.getAvailableScenarios());
for (var i = 0; i < scenariosTemp.length; i++) {
Scenario scenario = Scenario.fromJson(scenariosTemp[i] is String
? json.decode(scenariosTemp[i])
: scenariosTemp[i]);
scenarios.add([scenario.name, scenario.caption]);
}
setState(() => _scenarios = scenarios);
DocumentReader.setConfig(jsonEncode({
"functionality": {
"videoCaptureMotionControl": true,
"showCaptureButton": true
},
"customization": {
"showResultStatusMessages": true,
"showStatusMessages": true
},
"processParams": {"scenario": _selectedScenario}
}));
}
displayResults(DocumentReaderResults results) {
setState(() {
_status = results.getTextFieldValueByType(
eVisualFieldType.FT_SURNAME_AND_GIVEN_NAMES) ??
"";
_docImage = Image.asset('assets/images/id.png');
_portrait = Image.asset('assets/images/portrait.png');
if (results.getGraphicFieldImageByType(207) != null)
_docImage = Image.memory(Uri.parse("data:image/png;base64," +
results
.getGraphicFieldImageByType(
eGraphicFieldType.GF_DOCUMENT_IMAGE)
.replaceAll('\n', ''))
.data
.contentAsBytes());
if (results.getGraphicFieldImageByType(201) != null)
_portrait = Image.memory(Uri.parse("data:image/png;base64," +
results
.getGraphicFieldImageByType(eGraphicFieldType.GF_PORTRAIT)
.replaceAll('\n', ''))
.data
.contentAsBytes());
for (var textField in results.textResult.fields) {
for (var value in textField.values) {
print(textField.fieldName +
', value: ' +
value.value +
', source: ' +
value.sourceType.toString());
}
}
});
}
void handleResults(DocumentReaderResults results) {
if (_doRfid && results != null && results.chipPage != 0) {
String accessKey =
results.getTextFieldValueByType(eVisualFieldType.FT_MRZ_STRINGS);
if (accessKey != null && accessKey != "")
DocumentReader.setRfidScenario(jsonEncode({
"mrz": accessKey.replaceAll('^', '').replaceAll('\n', ''),
"pacePasswordType": eRFID_Password_Type.PPT_MRZ
}));
else if (results.getTextFieldValueByType(159) != null &&
results.getTextFieldValueByType(159) != "")
DocumentReader.setRfidScenario(jsonEncode({
"password": results.getTextFieldValueByType(159),
"pacePasswordType": eRFID_Password_Type.PPT_CAN
}));
// customRFID();
usualRFID();
} else
displayResults(results);
}
void onChangeRfid(bool value) {
setState(() => _doRfid = value && _canRfid);
DocumentReader.setConfig(jsonEncode({
"processParams": {"doRfid": _doRfid}
}));
}
Widget createImage(
String title, double height, double width, ImageProvider image) {
return Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Text(title),
Image(height: height, width: width, image: image)
]);
}
Widget createButton(String text, VoidCallback onPress) {
return Container(
padding: EdgeInsets.fromLTRB(5, 0, 5, 0),
transform: Matrix4.translationValues(0, -7.5, 0),
child: FlatButton(
color: Color.fromARGB(50, 10, 10, 10),
onPressed: onPress,
child: Text(text)),
width: 150,
);
}
Widget _buildRow(int index) {
Radio radio = new Radio(
value: _scenarios[index][0],
groupValue: _selectedScenario,
onChanged: (value) => setState(() {
_selectedScenario = value;
DocumentReader.setConfig(jsonEncode({
"processParams": {"scenario": _selectedScenario}
}));
}));
return Container(
child: ListTile(
title: GestureDetector(
onTap: () => radio.onChanged(_scenarios[index][0]),
child: Text(_scenarios[index][1])),
leading: radio),
padding: EdgeInsets.only(left: 40));
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(title: Center(child: Text(_status))),
body: Column(mainAxisAlignment: MainAxisAlignment.center, children: <
Widget>[
Visibility(
visible: isReadingRfid,
child: Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[]),
Container(
child: Text(rfidUIHeader,
textScaleFactor: 1.75,
style: TextStyle(color: rfidUIHeaderColor)),
padding: EdgeInsets.only(bottom: 40)),
Container(
child: Text(rfidDescription, textScaleFactor: 1.4),
padding: EdgeInsets.only(bottom: 40)),
FractionallySizedBox(
widthFactor: 0.6,
child: LinearProgressIndicator(
value: rfidProgress,
minHeight: 10,
valueColor: new AlwaysStoppedAnimation<Color>(
Color(0xFF4285F4)))),
FlatButton(
onPressed: () => hideRfidUI(),
child: Text("X"),
padding: EdgeInsets.only(top: 50)),
]))),
Visibility(
visible: !isReadingRfid,
child: Expanded(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
createImage("Portrait", 150, 150, _portrait.image),
createImage(
"Document image", 150, 200, _docImage.image),
]),
Expanded(
child: Container(
color: Color.fromARGB(5, 10, 10, 10),
child: ListView.builder(
itemCount: _scenarios.length,
itemBuilder:
(BuildContext context, int index) =>
_buildRow(index)))),
CheckboxListTile(
value: _doRfid,
onChanged: onChangeRfid,
title: Text(
"Process rfid reading ${_canRfid ? "" : "(unavailable)"}")),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
createButton("Scan document",
() => DocumentReader.showScanner()),
createButton(
"Scan image",
() async => DocumentReader.recognizeImage(
await getImage())),
])
]))),
])),
);
}
}Metadata
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Metadata
This is a flutter module for Regula document reader. It allows you to easily scan documents, for example passport, using your phone's camera. Supports Android and iOS
Repository (GitHub)
View/report issues
License
unknown (license)
