Bajardi: jumanov ozodbek

2-AMALIY ISH

BAJARDI:JUMANOV OZODBEK

MAVZU: QR KOD TASVIRI ORQALI MALUMOT OLISH

JUMANOV OZODBEK, [01.12.2022 11:38]
import 'dart:developer';
import 'dart:io';

import 'package:animated_text_kit/animated_text_kit.dart';

import 'package:flutter/material.dart';
import 'package:qr_code_scanner/qr_code_scanner.dart';
import 'package:url_launcher/url_launcher.dart';

void main() {

WidgetsFlutterBinding.ensureInitialized();
runApp(const MyApp());
}

class MyApp extends StatelessWidget {

const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const HomePage(),
);
}
}

class HomePage extends StatefulWidget {

const HomePage({super.key});

@override

State createState() => _HomePageState();
}

class _HomePageState extends State with WidgetsBindingObserver {

final qrKey = GlobalKey(debugLabel: 'QR');
Barcode? result;
late QRViewController? controller;
bool? flashStatus = false;
CameraFacing? _currentCameraFacing;

bool? isVisible = false;

@override
void initState() {
WidgetsBinding.instance.addObserver(this);
super.initState();
}

@override

void didChangeAppLifecycleState(AppLifecycleState state) async {
switch (state) {
case AppLifecycleState.inactive:
await controller!.pauseCamera();
log('INACTIVE');
break;
case AppLifecycleState.paused:
await controller!.pauseCamera();
log('PAUSED');
break;
case AppLifecycleState.detached:
await controller!.pauseCamera();
log('DETACHED');
break;
case AppLifecycleState.resumed:
await controller!.resumeCamera();
log('RESUMED');
break;
}
super.didChangeAppLifecycleState(state);
}

void goToUrl({String? url}) async {

try {
if (url!.startsWith('https://') || url.startsWith('http://')) {
final bool urlLaunched = await launchUrl(Uri.tryParse(url)!);
if (urlLaunched) {
log('LAUNCH URL');
}
}
// Clipboard.setData(ClipboardData(text: url));
} catch (e) {
log(e.toString());
}
}

void get changeCamera async {

try {
_currentCameraFacing = await controller!.flipCamera();
} catch (e) {
log(e.toString());
}
}

@override

void reassemble() {
if (Platform.isAndroid) {
controller!.pauseCamera();
} else {
controller!.resumeCamera();
}
super.reassemble();
}

void _onQRViewCreated(QRViewController controller) {

this.controller = controller;
controller.resumeCamera();
debugPrint('CAMERA CREATED');
controller.scannedDataStream.listen((scanData) {
setState(() {
result = scanData;
isVisible = true;
});
log(result!.code!);
});
}

void get flashLigth async {

try {
await controller!.toggleFlash();
flashStatus = await controller!.getFlashStatus();
setState(() {});
} catch (e) {
log(e.toString());
}
}

@override

void dispose() {
controller?.dispose();
WidgetsBinding.instance.removeObserver(this);
controller!.stopCamera();
super.dispose();
}

JUMANOV OZODBEK😎, [01.12.2022 11:38]

@override

Widget build(BuildContext context) {
return Scaffold(
body: Stack(
fit: StackFit.expand,
children: [
QRView(
key: qrKey,
onQRViewCreated: _onQRViewCreated,
cameraFacing: _currentCameraFacing ?? CameraFacing.back,
overlay: QrScannerOverlayShape(
borderColor: Colors.blue, borderRadius: 10),
),
AnimatedPositioned(
duration: const Duration(milliseconds: 200),
curve: Curves.easeIn,
bottom: isVisible! ? 20 : -200,
left: .0,
right: .0,
child: (result != null)
? _myAnimatedText(result!.code,
onPress: () => goToUrl(url: result!.code))
: const Text('Scan a code'),
)
],
),
floatingActionButtonLocation: FloatingActionButtonLocation.centerTop,
floatingActionButton: Row(
mainAxisSize: MainAxisSize.min,
children: [
FloatingActionButton(
heroTag: 'change',
onPressed: () => changeCamera,
child: const Icon(Icons.camera_front_sharp),
),
const SizedBox(
width: 20,
),
FloatingActionButton(
heroTag: 'flash',
onPressed: () => flashLigth,
child: const Icon(Icons.light),
)
],
),
);
}

Widget _myAnimatedText(String? text, {VoidCallback? onPress}) {

const colors = [Colors.red, Colors.white];
return AnimatedTextKit(onTap: onPress, animatedTexts: [
ColorizeAnimatedText(text!,
textAlign: TextAlign.center,
textStyle: const TextStyle(fontSize: 30, fontWeight: FontWeight.w600),
colors: colors)
]);
}