It is possible that I am screwing things up, but I am getting this error:

 FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':qrcode_reader:compileReleaseJavaWithJavac'.
> Failed to create MD5 hash for file 'C:\Users\tsort\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\qrcode_reader-0.1.1\android\tmplibs\flutter.jar'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Finished with error: Gradle build failed: 1

Good luck developing the plugin!

Hello,

I've been running the library in an app on my Nexus 6 and it has been working fine, except for once when it gave me the following error:

08-10 14:52:36.099 18253-18471/com.londonsockcompany.sockspotter E/flutter: [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception: MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader) #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:278:7) <asynchronous suspension> #1 QRCodeReader.scan (package:qrcode_reader/QRCodeReader.dart:67:27) <asynchronous suspension> #2 CorrectSockState.build.<anonymous closure> (package:sock_spotter/components/correct_sock.dart:54:30) #3 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:494:14) #4 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:549:30) #5 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24) #6 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9) #7 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:123:7) #8 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27) #9 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:147:20) #10 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22) #11 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7) #12 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7) #13 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7) #14 _invoke1 (dart:ui/hooks.dart:134:13) #15 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)

It happened in the middle of a presentation (never do a live demo!) but hasn't occurred since. Any idea what happened? Can I provide any more debug info? It has been working fine on a Pixel XL and iPhone X.

Thanks

[public class QRCodeReaderPlugin implements MethodCallHandler, ActivityResultListener, PluginRegistry.RequestPermissionResultListener {
                                                                                                    ^
  symbol:   class RequestPermissionResultListener
  location: interface PluginRegistry
C:\..\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\qrcode_reader-0.3.2\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:63: error: cannot find symbol
            registrar.addRequestPermissionResultListener(instance);
                     ^
  symbol:   method addRequestPermissionResultListener(QRCodeReaderPlugin)
  location: variable registrar of type Registrar](url)

error: method does not override or implement a method from a supertype
    @Override
    ^

Currently there're two variants of the QRCode Reader project:

1. https://github.com/bcko/flutter_qrcode_reader, corresponds to https://pub.dartlang.org/packages/qrcode_reader
2. https://github.com/PonnamKarthik/QRCodeReaderFlutter, corresponds to https://pub.dartlang.org/packages/qr_reader (Difference is qrcode vs qr in the Pub package name.)

Looks like the background story is this:

1. @villela started the project originally. (https://github.com/villela/flutter_qrcode_reader)
2. At some point it's no longer maintained.
3. @PonnamKarthik started a fresh repo by copying the project (not forking) and add update.
4. @villela's project transferred to @bcko

And the current status is like this:

1. @bcko's version keeps project history, continue accepting pull requests, but no new version is published on Pub.
2. @PonnamKarthik's version doesn't keep project history, contains different fixes (mainly by the author himself), have a Dart 2 compatible version published on Pub.

Obviously two diverged versions of the same project isn't the best for the project maintainers, the users and the potential contributers. So before both go too far away I have two suggestions here:

1. Obsolete one of the project. If @PonnamKarthik agree, I'd suggest to continue working on @bcko's version (as it keeps a more complete commit history), merge patches from @PonnamKarthik, publish a new version, and obsolete @PonnamKarthik's one. (I don't know, is it possible for @bcko grant the right to someone else to publish new version on pub?)
2. Evaluate if there's a more active project working on similar features, and ask people to focus the contribution effort to that project. This is of course said, but might be the best solution if the authors of the two projects are too busy to keep the projects maintained.

These are just my uninformed opinions, I really don't know the status of both authors. In closing, I'd like to thank @bcko and @PonnamKarthik for your effort on the project.

I get this error and it seems to be pointing towards qr_reader, here are my logs:

Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Running 'gradlew assembleDebug'...
Configuration 'compile' in project ':qrcode_reader' is deprecated. Use 'implementation' instead.
C:\Users\[user]\development\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:42: error: cannot find symbol
public class QRCodeReaderPlugin implements MethodCallHandler, ActivityResultListener, PluginRegistry.RequestPermissionResultListener {
                                                                                                    ^
  symbol:   class RequestPermissionResultListener
  location: interface PluginRegistry
C:\Users\[user]\development\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:63: error: incompatible types: QRCodeReaderPlugin cannot be converted to RequestPermissionsResultListener
            registrar.addRequestPermissionsResultListener(instance);
                                                          ^
C:\Users\[user]\development\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:155: error: method does not override or implement a method from a supertype
    @Override
    ^
Note: C:\Users\[user]\development\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
3 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':qrcode_reader:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s
Finished with error: Gradle build failed: 1

Any help is appreciated!

Android Resources of 25 compile SDK does not match with that of 28

1: Task failed with an exception.                                       
-----------                                                             
* What went wrong:                                                      
Execution failed for task ':qrcode_reader:verifyReleaseResources'.      
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
   > Android resource linking failed                                    
     /home/harsh/.gradle/caches/transforms-2/files-2.1/79a43a903ecb6dc82204ee669e724ddc/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/fontStyle not found.
                                                                        
     /home/harsh/.gradle/caches/transforms-2/files-2.1/79a43a903ecb6dc82204ee669e724ddc/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/font not found.
                                                                        
     /home/harsh/.gradle/caches/transforms-2/files-2.1/79a43a903ecb6dc82204ee669e724ddc/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/fontWeight not found.
                                                                        
     /home/harsh/.gradle/caches/transforms-2/files-2.1/79a43a903ecb6dc82204ee669e724ddc/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/fontVariationSettings not found.
                                                                        
     /home/harsh/.gradle/caches/transforms-2/files-2.1/79a43a903ecb6dc82204ee669e724ddc/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/ttcIndex not found.

When I try to compile on Windows and MacOS I get errors.

Windows error:

Launching lib\main.dart on Vivo 8 in debug mode...
Configuration 'compile' in project ':qrcode_reader' is deprecated. Use 'implementation' instead.
D:\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:42: error: cannot find symbol
public class QRCodeReaderPlugin implements MethodCallHandler, ActivityResultListener, PluginRegistry.RequestPermissionResultListener {
                                                                                                    ^
  symbol:   class RequestPermissionResultListener
  location: interface PluginRegistry
D:\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:63: error: incompatible types: QRCodeReaderPlugin cannot be converted to RequestPermissionsResultListener
            registrar.addRequestPermissionsResultListener(instance);
                                                          ^
D:\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java:155: error: method does not override or implement a method from a supertype
    @Override
    ^
Note: D:\flutter\.pub-cache\hosted\pub.dartlang.org\qrcode_reader-0.3.3\android\src\main\java\com\matheusvillela\flutter\plugins\qrcodereader\QRCodeReaderPlugin.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
3 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':qrcode_reader:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 12s
Gradle build failed: 1
Exited (sigterm)

I will post MacOS error during the week! (Although is the same, iirc)

Dear Mattheus, I have created an IOS version of the qrcode_reader.

It is still a bit rough, but works. Please let me know if you want to incorporate it, otherwise I'll fork and publish it as an ios version.

I'd rather not.

Kind regards, Johan Henselmans

When you hold the phone (in this case an iPhone X) horizontally, the view switches to a new layout. where only the top half of the screen is the camera, the bottom half is white. You can only see the "Ca" of the "Cancel" button on the right side of the screen. Example: https://www.dropbox.com/s/0603ajyixd9jxpp/tiltBug.mov?dl=0

I am using this plugin

First time while using the app the QR Code works fine, but when i minimize the app i.e. when its running in the background, then i come back again and try to use, its giving the following error.

It is working on IOS but not working on Android,

Detailed error below

E/flutter ( 4790): [ERROR:flutter/shell/common/shell.cc(184)] Dart Error: Unhandled exception: E/flutter ( 4790): MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader) E/flutter ( 4790): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:291:7) E/flutter ( 4790): E/flutter ( 4790): #1 QRCodeReader.scan (package:qrcode_reader/qrcode_reader.dart:67:27)

please can someone assist on this

thanks

Hello I get this error frop pubspec:

The current Dart SDK version is 2.1.0-dev.5.0.flutter-a2eb050044.

depends on qrcode_reader >=0.1.1 which requires SDK version >=1.8.0 <2.0.0, version solving failed.

E/flutter (12364): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method readQRCode on channel qrcode_reader) E/flutter (12364): #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:319:7) E/flutter (12364):
E/flutter (12364): #1 QRCodeReader.scan (package:qrcode_reader/qrcode_reader.dart:74:27)

I tried with all the same issues but still the same error.

qrcode_reader: git: https://github.com/bcko/flutter_qrcode_reader.git

Just by simply adding the package the Android version crashes on startup. iOS works perfectly in debug and released version. We are not refering to the qrcode_reader anywhere in our code. We have android.permission.CAMERA in uses.permissions. Removing the package from pubspec.yaml gets the app going on Android again.

dependencies:
  flutter:
    sdk: flutter
  http: ^0.12.0
  shared_preferences: ^0.5.6
  qrcode_reader:
    git:
      url: git://github.com/bcko/flutter_qrcode_reader.git
      ref: f47a459

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2

dev_dependencies:
  flutter_test:
    sdk: flutter

Flutter doctor.

➜  flutter_poc git:(impersonate-with-qrcode) ✗ flutter doctor -v
[✓] Flutter (Channel beta, v1.13.6, on Mac OS X 10.15.2 19C57, locale en-GB)
    • Flutter version 1.13.6 at /Users/plauri/.applications/flutter
    • Framework revision 659dc8129d (3 weeks ago), 2019-12-30 09:24:47 -0800
    • Engine revision bdc9708d23
    • Dart version 2.8.0 (build 2.8.0-dev.0.0 c547f5d933)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/plauri/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.3, Build version 11C29
    • CocoaPods version 1.8.4

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (version 3.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[✓] VS Code (version 1.41.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.7.1

[✓] Connected device (3 available)
    • PRA LX1    • 8NH7N17B04000425 • android-arm64  • Android 8.0.0 (API 26)
    • Chrome     • chrome           • web-javascript • Google Chrome 79.0.3945.130
    • Web Server • web-server       • web-javascript • Flutter Tools

! Doctor found issues in 1 category.

When running the QRCode Scanner on iPads running iOS 13.0, the cancel button isn't visible.

Also, the scanner opens up as a pop-up rather than a full-screen scanner.

FAILURE: Build failed with an exception.

• Where: Build file '/Users/yourks/.pub-cache/hosted/pub.flutter-io.cn/qrcode_reader-0.4.4/android/build.gradle' line: 42

• What went wrong: A problem occurred evaluating root project 'qrcode_reader'.

Could not find method implementation() for arguments [com.dlazaro66.qrcodereaderview:qrcodereaderview:2.0.2@aar, build_ar93f4iz1m8gb2ardj8w32nso$_run_closure3$_closure9@36b99a34] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

Flutter 1.10.14 • channel master • https://github.com/flutter/flutter.git Framework • revision 1946fc4da0 (3 weeks ago) • 2019-10-07 15:23:31 -0700 Engine • revision 1d62160fdb Tools • Dart 2.6.0 (build 2.6.0-dev.1.0 d6c6d12ebf)