30 questions
2
votes
0
answers
69
views
Random Barcode Detections on Timeout When No QR Code Is Present (mobile_scanner)
I’m getting random barcode values when the scanner view closes due to timeout even though no QR code or barcode in front of the camera.
Each time this happens, the detected values are different.
Code :...
- 1,097
0
votes
0
answers
126
views
Blank screen after QR code scan and returning result using Navigator.pop
I'm building a Flutter app using the qr_code_scanner_plus package. The QR scan works, and I’m able to retrieve the scanned result, but after scanning, the app navigates back and shows a blank screen (...
- 786
0
votes
1
answer
93
views
How can I scan QR code from an image on web
I have a flutter project and I want to also deploy it on the web, but for the QR code section, I want to upload an image and scan the QR code from the image on the web platform. Because I think it is ...
0
votes
2
answers
182
views
How to Align Text below QR code Scanner Overlay in Flutter?
I have implemented QR Code Scanner for my app and I want to align text dynamically below the Overlay of QR Code Scanner. I have used qr_code_scanner package. I have tried it to make in Stack widget ...
- 788
-1
votes
4
answers
96
views
Where is the error in the else position in Flutter?
At first, I was told that PrettyQrView was wrong, so I changed PrettyQrView(qrCode: qrData) to PrettyQrView.data(data: qrData), and this error disappeared, but the error in else is still the same. I ...
- 9
0
votes
1
answer
2k
views
Overlay for QR code scanner using Flutter
I want to implement QR code scanner like exact GooglePay:
I can implement the AppBar and showModalBottomSheet. But I still can't figure out how can I implement the overlay design widget (four ...
- 788
0
votes
1
answer
196
views
Why Flutter qr and barcode scan packages do not scan all of the barcodes I try?
Well, I have used multiple Flutter barcode scan pakcages, but could not find the proper one. The best I have tried was MobileScanner that was fast and mostly accurate, but it has one problem. When I ...
- 3
0
votes
1
answer
574
views
Flutter - unable to Open camera and Scan QR code(using existing packages) in flutter InAppWebView
I am building an Android/iOS app which opens external url and access the contacts and reads the QR code from native mobile via JavaScript calls from the external website. Currently, I am able to get ...
- 206
0
votes
1
answer
326
views
When I open the camera, I get a fatal error and the phone shuts down. This does not happen on iOS. in Flutter
I have a webview application and I use the following plugins for it.
flutter_inappwebview: ^5.3.2
qr_code_scanner: ^1.0.0
http: ^1.2.0
When I open the camera, I get a fatal error and the phone ...
0
votes
2
answers
337
views
Flutter BarCode to check if data contains Letters/Word with QR Code Scanner
Hi I have been trying to read the QR Code and then navigate to a page when scan data contains specific keyword. Currently, I did print the data and it shows correctly, but when I want pass it to check ...
0
votes
2
answers
1k
views
How to Convert a QrImageView widget into image in flutter
I cannot figure out on how to convert a generated qr code by the use of QrImageView into a image file type that can be saved in the database
This is my code for generating a qr code:
Widget ...
0
votes
1
answer
255
views
Error: The method 'fromBytes' isn't defined for the type 'VCard' in Flutter
I'm encountering an error in my Flutter code where I'm trying to parse a vCard using the vcard package. However, I'm getting the error message "The method 'fromBytes' isn't defined for the type '...
0
votes
0
answers
212
views
Is it possible to generate QR Codes on a flutter app with a logo or saying in the middle. How would one go about this?
Currently trying to build a custom QR code generator that would either include a logo or some text in the middle so it is not generic have been scouring the internet looking for solutions but mainly ...
- 1
0
votes
1
answer
135
views
The problem of shrinking the screen size of the entire program
I am writing a Flutter project that scans QR codes and I use the qr_code_scanner package
At first, the screen size was good, but now when I run it on my phone, it is smaller from the top and bottom
It ...
- 55
0
votes
1
answer
601
views
How to create and integrate custom qr code in flutter
I want to add a qr code for my application. How can I integrate and scan the QR code I will generate? I would be very grateful if you could give me some explanatory information about the methods I ...
0
votes
1
answer
53
views
How to resolve null check operator of a variable within a builder?
I'm doing a function statement of QR Code Scanner. When it's not facing the QR Code, it should be in waiting state in else if statement.
else if (result == null) {
return Column(
children: [ ...
- 13
0
votes
2
answers
629
views
Why do I get screen blinks when I update Image.memory()?
I get a QR code for authorization via the REST API and display it on the screen via Image.memory().
After the QR is shown on the screen, I start sending authorization requests to the server.
But since ...
- 11
0
votes
1
answer
2k
views
QR Code Scanner in Flutter - not opening QR Scanner View
I am using below puglin in flutter to open QR Scanner :
https://pub.dev/packages/qr_code_scanner
I have added necessary classes from Plugin example, but when I press on button, nothing happens.
Below ...
- 1,707
1
vote
2
answers
2k
views
Flutter Qr_Code_Scanner 404, No barcode scanner found ios
I'm using the qr_code_scanner package and getting an error like this on ios.
[VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: CameraException(404, No barcode scanner found)
#0 ...
- 85
1
vote
0
answers
737
views
using Qr code to extract information from an api flutter
I am trying to use Qr code scanner to extract information of the user for example user's picture, display name etc, by scanning a Qrcode with an endpoint as the message and passing the data data to a ...
- 11
0
votes
0
answers
274
views
External barcode scanner issue with flutter app
I built an simple App which scans your QR Code from an external Scanner and displays it on the screen. The QR code contain the Firebase user id which contains lower and uppercase letters. enter image ...
0
votes
1
answer
387
views
Flutter QR Camera is not working when page is changed
i have a screen that scans qr code and sends some informations to my db, when i navigate to camera page first time camera works perfectly but when i navigate to another page then back to camera page ...
- 51
0
votes
1
answer
2k
views
How to create custom QR Codes to launch profile screen in Flutter
I want to have a feature in my Flutter App like Snapcodes on Snapchat. Basically custom “QR” Codes (they aren’t scannable to anything besides Snapchat so not really QR codes) with the app icon in them ...
- 564
-1
votes
1
answer
658
views
QR code scan to Flutter web. How to access data from QR code before running main?
Hello Everyone: I am in a further situation. I want to build a app with flutter web. User scans the QR code from his camera app (Android or Iphone) and then the link to my website will be returned. ...
- 19
8
votes
1
answer
24k
views
QR Code URL data not readable or encrypted
There is an app which I use, which can read the name of a location from a qr code.
Recently, the qr code was changed so that the name of the location is no longer readable by zxing or any other ...
- 972
2
votes
2
answers
2k
views
After successfully a Barcode / Qrcode Scanner on Flutter VSCode, when I try to make apk file, I get an error
Code:
import 'package:flutter/material.dart';
import 'package:qr_code_scanner/qr_code_scanner.dart';
import 'dart:io';
import 'package:flutter/foundation.dart';
void main() {
runApp(const MyApp());
...
1
vote
1
answer
2k
views
Scan the QR code from device camera and launch to the flutter app
I want to scan the QR code using the phone's camera and then direct it to the flutter application I created. I couldn't find a resource that could help me with this. Can anyone help with this before?
- 19
0
votes
2
answers
2k
views
[ Flutter QRcode successive scans ]
I'm developing a Flutter application based on QRcode scan.
I'd want the user to be able to scan multiple QRCODES without exiting the scan screen so we can scan like ten of them in a row that would ...
- 95
1
vote
1
answer
859
views
Is there any ways to use QR Codes for installing an app if it's not already installed, if it's installed redirecting to a specific screen in the app?
I am trying to finish up my app which is written on flutter for iOS and VueJS for web version. Planning to use QR codes for installing an app if it's not already installed, if it's installed and user ...
- 13
1
vote
1
answer
1k
views
Duplicate dependencies in flutter app using qrscan and flutter_facebook_auth
Yeap, i know it sound rare, but when gradle runs, gives a Duplicate Dependencies in task ':app:checkDebugDuplicateClasses' with 'com.google.zxing.*'. Apparently one flutter package use com.github....
- 4,094