Barcode scanner plugin for flutter. Supports barcode scanning for Android and iOS

Last update: Jan 6, 2023

Overview

flutter_barcode_scanner

A plugin for Flutter apps that adds barcode scanning support on both Android and iOS.

Try example

Just clone or download the repository, open the project in Android Studio/ VS Code, open pubspec.yaml and click on Packages get. Connect device and hit run. To run on iPhone you need to run from Xcode first time and just make pod install in example/ios then run from Xcode.

Getting Started

Follow the steps for Android and iOS

PLEASE FOLLOW iOS STEPS CAREFULLY

Android

⚡ Don't worry, you don't need to do anything.

iOS - Requires Swift support

Deployment target : 12

1. Fresh start:

Create a new flutter project. Please check for Include swift support for iOS code.
After creating new flutter project open /ios project in Xcode and set minimum deployment target to 12 and set Swift version to 5.
After setting up the deployment target and swift version, close the Xcode then run pod install in /ios in flutter project.

You have done with basic configuration now proceed to section How to use.

2. Adding to existing flutter app:

If your existing ios code is Swift then you just need to do following.

Set minimum deployment target to 12 and set Swift version to 5.
Close the Xcode and run pod install in /ios in flutter project.
Now proceed to section How to use.

If your existing ios code is Objective-C then you need to do following.

Create a new flutter project with same name at different location (Don't forget to check Include swift support for iOS code while creating)
Just copy newly created /ios folder from project and replace with existing /ios.
Open ios project in Xcode and set minimum deployment target to 12 and set Swift version to 5.
Run pod install in /ios

Note: If you did any changes in ios part before, you might need to make these configuration again

How to use ?

To use on iOS, you will need to add the camera usage description. To do that open the Xcode and add camera usage description in Info.plist.

<key>NSCameraUsageDescription</key>
<string>Camera permission is required for barcode scanning.</string>

After making the changes in Android ans iOS add flutter_barcode_scanner to pubspec.yaml

dependencies:
  ...
  flutter_barcode_scanner: ^2.0.0

One time scan

You need to import the package first.

import 'package:flutter_barcode_scanner/flutter_barcode_scanner.dart';

Then use the scanBarcode method to access barcode scanning.

String barcodeScanRes = await FlutterBarcodeScanner.scanBarcode(
                                                    COLOR_CODE, 
                                                    CANCEL_BUTTON_TEXT, 
                                                    isShowFlashIcon, 
                                                    scanMode);

Here in scanBarcode,

COLOR_CODE is hex-color which is the color of line in barcode overlay you can pass color of your choice,

CANCEL_BUTTON_TEXT is a text of cancel button on screen you can pass text of your choice and language,

isShowFlashIcon is bool value used to show or hide the flash icon,

scanMode is a enum in which user can pass any of { QR, BARCODE, DEFAULT }, if nothing is passed it will consider a default value which will be QR. It shows the graphics overlay like for barcode and QR.

NOTE: Currently, scanMode is just to show the graphics overlay for barcode and QR. Any of this mode selected will scan both QR and barcode.

Continuous scan

If you need to scan barcodes continuously without closing camera use FlutterBarcodeScanner.getBarcodeStreamReceiver params will be same like FlutterBarcodeScanner.scanBarcode e.g.

FlutterBarcodeScanner.getBarcodeStreamReceiver("#ff6666", "Cancel", false, ScanMode.DEFAULT)
         .listen((barcode) { 
         /// barcode to be used
         });

Contribution:

would ❤️ to see any contribution, give ⭐ if you like

Contact:

E-mail: [email protected]

Comments

Do not close the scanning activity after every scan.

Is your feature request related to a problem? Please describe. My customers need a way to scan products quickly, thus meaning that they need the activity to stay open after a scan has happened so that they can scan the next item.

Describe the solution you'd like Give an optional parameter for closing the scan activity after every scan.

Describe alternatives you've considered None that I can think of.

Additional context None.
enhancement resolved iOS Android

opened by Baileypollard 27
Flash icon is not showing

Flash icon is not showing.

Its showing F...h in the place of icon. I hope this is a known issue as i can see the change log 0.1.2 mentions its fixed for some devices.

Im facing this problem on iPhone 7 plus with iOS 13.4.1

high-priority resolved iOS under-evaluation

opened by rickmrobin 17
Flutter v1.12.13+hotfix.5, bug on compile

Hi.

This package ran very well, but in the new version of Flutter, it has been a problem compiling and running.

Flutter v1.12.13+hotfix.5 Dart 2.7.0

Tanks
resolved iOS Android

opened by LuizLeite 16
Build Fails

when trying to build the example project. I get this.

Xcode's output: ↳ error: Unexpected duplicate tasks: 1) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/irperera/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_on.png' to '/Users/irperera/Developer/flutterProjects/flutter_barcodec/build/ios/Debug-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_on.png' 2) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/irperera/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_on.png' to '/Users/irperera/Developer/flutterProjects/flutter_barcodec/build/ios/Debug-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_on.png' error: Unexpected duplicate tasks: 1) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/irperera/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_off.png' to '/Users/irperera/Developer/flutterProjects/flutter_barcodec/build/ios/Debug-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_off.png' 2) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/irperera/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_off.png' to '/Users/irperera/Developer/flutterProjects/flutter_barcodec/build/ios/Debug-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_off.png' note: Using new build systemnote: Planning buildnote: Constructing build description

Could not build the precompiled application for the device.

Error launching application on iPhone.
bug resolved iOS

opened by irperera 16
App Crashing After Close Camera

When I press button EXIT, my app force close. Please help me My Code: Future scanBarcodeNormal() async { String barcodeScanRes; try { barcodeScanRes = await FlutterBarcodeScanner.scanBarcode( "#ff6666", "EXIT", true, ScanMode.BARCODE); if (barcodeScanRes != "-1") { print(barcodeScanRes); } } on PlatformException { barcodeScanRes = 'Failed to get platform version.'; } if (!mounted) return; setState(() { }); } Here my error: E/AndroidRuntime(21975): FATAL EXCEPTION: main E/AndroidRuntime(21975): Process: abc.test, PID: 21975 E/AndroidRuntime(21975): java.lang.RuntimeException: Unable to destroy activity {abc.test/com.amolg.flutterbarcodescanner.BarcodeCaptureActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Thread$State java.lang.Thread.getState()' on a null object reference E/AndroidRuntime(21975): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4167) E/AndroidRuntime(21975): at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4185) E/AndroidRuntime(21975): at android.app.ActivityThread.-wrap6(ActivityThread.java) E/AndroidRuntime(21975): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1521) E/AndroidRuntime(21975): at android.os.Handler.dispatchMessage(Handler.java:102) E/AndroidRuntime(21975): at android.os.Looper.loop(Looper.java:154) E/AndroidRuntime(21975): at android.app.ActivityThread.main(ActivityThread.java:6077) E/AndroidRuntime(21975): at java.lang.reflect.Method.invoke(Native Method) E/AndroidRuntime(21975): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) E/AndroidRuntime(21975): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756) E/AndroidRuntime(21975): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Thread$State java.lang.Thread.getState()' on a null object reference E/AndroidRuntime(21975): at com.amolg.flutterbarcodescanner.camera.CameraSource$FrameProcessingRunnable.release(CameraSource.java:967) E/AndroidRuntime(21975): at com.amolg.flutterbarcodescanner.camera.CameraSource.release(CameraSource.java:273) E/AndroidRuntime(21975): at com.amolg.flutterbarcodescanner.camera.CameraSourcePreview.release(CameraSourcePreview.java:84) E/AndroidRuntime(21975): at com.amolg.flutterbarcodescanner.BarcodeCaptureActivity.onDestroy(BarcodeCaptureActivity.java:266) E/AndroidRuntime(21975): at android.app.Activity.performDestroy(Activity.java:6864) E/AndroidRuntime(21975): at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1153) E/AndroidRuntime(21975): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4154) E/AndroidRuntime(21975): ... 9 more

opened by hohoan 13

App close after scanning barcode

Describe the bug I got error while scanning barcode. Barcode value is shown in dart log, but app is stopped. I dont know i wrong in implementation or that's a bug.

Smartphone (please complete the following information):

Device: MI A1
OS: Android 9

Log

> FATAL EXCEPTION: main
    Process: com.mozdev.barcode_scan, PID: 15566
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=9001, result=0, data=Intent { (has extras) }} to activity {com.mozdev.barcode_scan/com.mozdev.barcode_scan.MainActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'void io.flutter.plugin.common.MethodChannel$Result.success(java.lang.Object)' on a null object reference
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4382)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4424)
        at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1818)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6762)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'void io.flutter.plugin.common.MethodChannel$Result.success(java.lang.Object)' on a null object reference
        at com.amolg.flutterbarcodescanner.FlutterBarcodeScannerPlugin.onActivityResult(FlutterBarcodeScannerPlugin.java:157)
        at io.flutter.embedding.engine.FlutterEnginePluginRegistry$FlutterEngineActivityPluginBinding.onActivityResult(FlutterEnginePluginRegistry.java:634)
        at io.flutter.embedding.engine.FlutterEnginePluginRegistry.onActivityResult(FlutterEnginePluginRegistry.java:367)
        at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onActivityResult(FlutterActivityAndFragmentDelegate.java:546)
        at io.flutter.embedding.android.FlutterActivity.onActivityResult(FlutterActivity.java:594)
        at android.app.Activity.dispatchActivityResult(Activity.java:7454)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4375)

Code

Future<void> scanBarcodeNormal(BuildContext context) async {
    String barcodeScanRes;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      barcodeScanRes = await FlutterBarcodeScanner.scanBarcode(
          "#ff6666", "Cancel", true, ScanMode.BARCODE);
      print(barcodeScanRes);
    } on PlatformException {
      barcodeScanRes = 'Failed to get platform version.';
    }

    // 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(() {
      _scanBarcode = barcodeScanRes;
    });
}


**Dart/Flutter Log**
> I/flutter (17677): 8999909000711

**Depedencies**
pubspec.yaml

flutter_barcode_scanner:
    git:
      url: git://github.com/AmolGangadhare/flutter_barcode_scanner.git

resolved Android

opened by bontew 13

iOS build failed

Describe the bug I want build ios release but it shows error from flutter_barcode_scanner. The way to reproduce it is by using flutter build -ios --release

Building com.xxxxx for device (ios-release)...

Automatically signing iOS for device deployment using specified development team in Xcode project: N7CVA637YZ

Running Xcode build...                                                  

Xcode build done.                                            3.6s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    error: Unexpected duplicate tasks:
    1) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from
    '/Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_off.png'
    to
    '/Users/raynne/Documents/Development/Developments_SourceCode_20191007/kepong/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_ba
    rcode_scanner.framework/ic_flash_off.png'
    2) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from
    '/Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_off.png'
    to
    '/Users/raynne/Documents/Development/Developments_SourceCode_20191007/kepong/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_ba
    rcode_scanner.framework/ic_flash_off.png'
    error: Unexpected duplicate tasks:
    1) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from
    '/Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_on.png'
    to
    '/Users/raynne/Documents/Development/Developments_SourceCode_20191007/kepong/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_ba
    rcode_scanner.framework/ic_flash_on.png'
    2) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from
    '/Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_on.png'
    to
    '/Users/raynne/Documents/Development/Developments_SourceCode_20191007/kepong/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_ba
    rcode_scanner.framework/ic_flash_on.png'
    note: Using new build system
    note: Planning build
    note: Constructing build description

Encountered error while building for device.

New Error Log After searching I saw some people stating that they are able to fixed it by changing their deployment target to 11.0. The way to reproduce it is changing my deployment target from 8.0 to 11.0.

Building  com.xxxxx for device (ios-release)...
Automatically signing iOS for device deployment using specified development team in Xcode project: N7CVA637YZ
Running pod install...                                              2.2s
Running Xcode build...                                                  
                                                   
Xcode build done.                                            5.0s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/FlutterWebViewController.swift:52:46:
    warning: conditional downcast from 'String?' to 'String' does nothing
                let data = (initialData!["data"] as? String)!
                            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/FlutterWebViewController.swift:53:54:
    warning: conditional downcast from 'String?' to 'String' does nothing
                let mimeType = (initialData!["mimeType"] as? String)!
                                ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/FlutterWebViewController.swift:54:54:
    warning: conditional downcast from 'String?' to 'String' does nothing
                let encoding = (initialData!["encoding"] as? String)!
                                ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/FlutterWebViewController.swift:55:52:
    warning: conditional downcast from 'String?' to 'String' does nothing
                let baseUrl = (initialData!["baseUrl"] as? String)!
                               ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/FlutterWebViewController.swift:27:13:
    warning: initialization of immutable value 'initialOptions' was never used; consider replacing with assignment to '_' or removing it
            let initialOptions = (args["initialOptions"] as? [String: Any])!
            ~~~~^~~~~~~~~~~~~~
            _
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/FlutterWebViewController.swift:221:41
    : warning: result of call to 'parse(options:)' is unused
                        inAppWebViewOptions.parse(options: inAppWebViewOptionsMap)
                                            ^    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    75:114: error: 'NSLayoutAttribute' has been renamed to 'NSLayoutConstraint.Attribute'
            containerWebView_BottomFullScreenConstraint = NSLayoutConstraint(item: self.containerWebView, attribute: NSLayoutAttribute.bottom, relatedBy:
            NSLayoutRelation.equal, toItem: self.view, attribute: NSLayoutAttribute.bottom, multiplier: 1, constant: 0)
                                                                                                                     ^~~~~~~~~~~~~~~~~
                                                                                                                     NSLayoutConstraint.Attribute
    UIKit.NSLayoutAttribute:2:18: note: 'NSLayoutAttribute' was obsoleted in Swift 4.2
    public typealias NSLayoutAttribute = NSLayoutConstraint.Attribute
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    76:111: error: 'NSLayoutAttribute' has been renamed to 'NSLayoutConstraint.Attribute'
            containerWebView_TopFullScreenConstraint = NSLayoutConstraint(item: self.containerWebView, attribute: NSLayoutAttribute.top, relatedBy:
            NSLayoutRelation.equal, toItem: self.view, attribute: NSLayoutAttribute.top, multiplier: 1, constant: 0)
                                                                                                                  ^~~~~~~~~~~~~~~~~
                                                                                                                  NSLayoutConstraint.Attribute
    UIKit.NSLayoutAttribute:2:18: note: 'NSLayoutAttribute' was obsoleted in Swift 4.2
    public typealias NSLayoutAttribute = NSLayoutConstraint.Attribute
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    79:47: warning: coercion of implicitly unwrappable value of type 'InAppWebView?' to 'Any' does not unwrap optional
            let height = NSLayoutConstraint(item: webView, attribute: .height, relatedBy: .equal, toItem: containerWebView, attribute: .height, multiplier: 1,
            constant: 0)
                                                  ^~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:9
    3:9: note: implicitly unwrapped property 'webView' declared here
        var webView: InAppWebView!
            ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    79:47: note: provide a default value to avoid this warning
            let height = NSLayoutConstraint(item: webView, attribute: .height, relatedBy: .equal, toItem: containerWebView, attribute: .height, multiplier: 1,
            constant: 0)
                                                  ^~~~~~~
                                                          ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    79:47: note: force-unwrap the value to avoid this warning
            let height = NSLayoutConstraint(item: webView, attribute: .height, relatedBy: .equal, toItem: containerWebView, attribute: .height, multiplier: 1,
            constant: 0)
                                                  ^~~~~~~
                                                         !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    79:47: note: explicitly cast to 'Any' with 'as Any' to silence this warning
            let height = NSLayoutConstraint(item: webView, attribute: .height, relatedBy: .equal, toItem: containerWebView, attribute: .height, multiplier: 1,
            constant: 0)
                                                  ^~~~~~~
                                                          as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    80:46: warning: coercion of implicitly unwrappable value of type 'InAppWebView?' to 'Any' does not unwrap optional
            let width = NSLayoutConstraint(item: webView, attribute: .width, relatedBy: .equal, toItem: containerWebView, attribute: .width, multiplier: 1,
            constant: 0)
                                                 ^~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:9
    3:9: note: implicitly unwrapped property 'webView' declared here
        var webView: InAppWebView!
            ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    80:46: note: provide a default value to avoid this warning
            let width = NSLayoutConstraint(item: webView, attribute: .width, relatedBy: .equal, toItem: containerWebView, attribute: .width, multiplier: 1,
            constant: 0)
                                                 ^~~~~~~
                                                         ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    80:46: note: force-unwrap the value to avoid this warning
            let width = NSLayoutConstraint(item: webView, attribute: .width, relatedBy: .equal, toItem: containerWebView, attribute: .width, multiplier: 1,
            constant: 0)
                                                 ^~~~~~~
                                                        !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    80:46: note: explicitly cast to 'Any' with 'as Any' to silence this warning
            let width = NSLayoutConstraint(item: webView, attribute: .width, relatedBy: .equal, toItem: containerWebView, attribute: .width, multiplier: 1,
            constant: 0)
                                                 ^~~~~~~
                                                         as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    81:55: warning: coercion of implicitly unwrappable value of type 'InAppWebView?' to 'Any' does not unwrap optional
            let leftConstraint = NSLayoutConstraint(item: webView, attribute: .leftMargin, relatedBy: .equal, toItem: containerWebView, attribute: .leftMargin,
            multiplier: 1, constant: 0)
                                                          ^~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:9
    3:9: note: implicitly unwrapped property 'webView' declared here
        var webView: InAppWebView!
            ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    81:55: note: provide a default value to avoid this warning
            let leftConstraint = NSLayoutConstraint(item: webView, attribute: .leftMargin, relatedBy: .equal, toItem: containerWebView, attribute: .leftMargin,
            multiplier: 1, constant: 0)
                                                          ^~~~~~~
                                                                  ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    81:55: note: force-unwrap the value to avoid this warning
            let leftConstraint = NSLayoutConstraint(item: webView, attribute: .leftMargin, relatedBy: .equal, toItem: containerWebView, attribute: .leftMargin,
            multiplier: 1, constant: 0)
                                                          ^~~~~~~
                                                                 !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    81:55: note: explicitly cast to 'Any' with 'as Any' to silence this warning
            let leftConstraint = NSLayoutConstraint(item: webView, attribute: .leftMargin, relatedBy: .equal, toItem: containerWebView, attribute: .leftMargin,
            multiplier: 1, constant: 0)
                                                          ^~~~~~~
                                                                  as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    82:56: warning: coercion of implicitly unwrappable value of type 'InAppWebView?' to 'Any' does not unwrap optional
            let rightConstraint = NSLayoutConstraint(item: webView, attribute: .rightMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .rightMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:9
    3:9: note: implicitly unwrapped property 'webView' declared here
        var webView: InAppWebView!
            ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    82:56: note: provide a default value to avoid this warning
            let rightConstraint = NSLayoutConstraint(item: webView, attribute: .rightMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .rightMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
                                                                   ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    82:56: note: force-unwrap the value to avoid this warning
            let rightConstraint = NSLayoutConstraint(item: webView, attribute: .rightMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .rightMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
                                                                  !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    82:56: note: explicitly cast to 'Any' with 'as Any' to silence this warning
            let rightConstraint = NSLayoutConstraint(item: webView, attribute: .rightMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .rightMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
                                                                   as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    83:56: warning: coercion of implicitly unwrappable value of type 'InAppWebView?' to 'Any' does not unwrap optional
            let bottomContraint = NSLayoutConstraint(item: webView, attribute: .bottomMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .bottomMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:9
    3:9: note: implicitly unwrapped property 'webView' declared here
        var webView: InAppWebView!
            ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    83:56: note: provide a default value to avoid this warning
            let bottomContraint = NSLayoutConstraint(item: webView, attribute: .bottomMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .bottomMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
                                                                   ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    83:56: note: force-unwrap the value to avoid this warning
            let bottomContraint = NSLayoutConstraint(item: webView, attribute: .bottomMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .bottomMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
                                                                  !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    83:56: note: explicitly cast to 'Any' with 'as Any' to silence this warning
            let bottomContraint = NSLayoutConstraint(item: webView, attribute: .bottomMargin, relatedBy: .equal, toItem: containerWebView, attribute:
            .bottomMargin, multiplier: 1, constant: 0)
                                                           ^~~~~~~
                                                                   as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    86:96: error: 'NSLayoutAttribute' has been renamed to 'NSLayoutConstraint.Attribute'
            webView_BottomFullScreenConstraint = NSLayoutConstraint(item: self.webView, attribute: NSLayoutAttribute.bottom, relatedBy: NSLayoutRelation.equal,
            toItem: self.containerWebView, attribute: NSLayoutAttribute.bottom, multiplier: 1, constant: 0)
                                                                                                   ^~~~~~~~~~~~~~~~~
                                                                                                   NSLayoutConstraint.Attribute
    UIKit.NSLayoutAttribute:2:18: note: 'NSLayoutAttribute' was obsoleted in Swift 4.2
    public typealias NSLayoutAttribute = NSLayoutConstraint.Attribute
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:1
    87:93: error: 'NSLayoutAttribute' has been renamed to 'NSLayoutConstraint.Attribute'
            webView_TopFullScreenConstraint = NSLayoutConstraint(item: self.webView, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem:
            self.containerWebView, attribute: NSLayoutAttribute.top, multiplier: 1, constant: 0)
                                                                                                ^~~~~~~~~~~~~~~~~
                                                                                                NSLayoutConstraint.Attribute
    UIKit.NSLayoutAttribute:2:18: note: 'NSLayoutAttribute' was obsoleted in Swift 4.2
    public typealias NSLayoutAttribute = NSLayoutConstraint.Attribute
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:2
    57:49: error: 'NSStringFromCGRect' has been replaced by 'NSCoder.string(for:)'
            print("Setting the WebView's frame to \(NSStringFromCGRect(frame))")
                                                    ^~~~~~~~~~~~~~~~~~
                                                    NSCoder.string     for: 
    UIKit.NSStringFromCGRect:2:13: note: 'NSStringFromCGRect' was obsoleted in Swift 3
    public func NSStringFromCGRect(_ rect: CGRect) -> String
                ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:2
    79:51: error: cannot assign value of type 'Double' to type 'UIWindow.Level'
                        self.tmpWindow?.windowLevel = 0.0
                                                      ^~~
                                                      UIWindow.Level(rawValue:  )
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:2
    88:51: error: cannot assign value of type 'Double' to type 'UIWindow.Level'
                        self.tmpWindow?.windowLevel = 0.0
                                                      ^~~
                                                      UIWindow.Level(rawValue:  )
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppBrowserWebViewController.swift:3
    77:32: warning: result of call to 'parse(options:)' is unused
            newInAppWebViewOptions.parse(options: newOptionsMap)
                                   ^    ~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:243:33: error:
    'UIImagePNGRepresentation' has been replaced by instance method 'UIImage.pngData()'
                        imageData = UIImagePNGRepresentation(screenshot)!
                                    ^~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~
                                    screenshot.pngData       
    UIKit.UIImagePNGRepresentation:2:13: note: 'UIImagePNGRepresentation' was obsoleted in Swift 3
    public func UIImagePNGRepresentation(_ image: UIImage) -> Data?
                ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:759:27: warning:
    expression implicitly coerced from 'String?' to 'Any'
                        print((result as! FlutterError).message)
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:759:53: note:
    provide a default value to avoid this warning
                        print((result as! FlutterError).message)
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
                                                                ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:759:53: note:
    force-unwrap the value to avoid this warning
                        print((result as! FlutterError).message)
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
                                                               !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:759:53: note:
    explicitly cast to 'Any' with 'as Any' to silence this warning
                        print((result as! FlutterError).message)
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
                                                                as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:817:31: warning:
    expression implicitly coerced from 'Error?' to 'Any'
                            print(error)
                                  ^~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:817:31: note:
    provide a default value to avoid this warning
                            print(error)
                                  ^~~~~
                                        ?? <#default value#>
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:817:31: note:
    force-unwrap the value to avoid this warning
                            print(error)
                                  ^~~~~
                                       !
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/InAppWebView.swift:817:31: note:
    explicitly cast to 'Any' with 'as Any' to silence this warning
                            print(error)
                                  ^~~~~
                                        as Any
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SafariViewController.swift:46:43:
    error: cannot assign value of type 'Double' to type 'UIWindow.Level'
                self.tmpWindow?.windowLevel = 0.0
                                              ^~~
                                              UIWindow.Level(rawValue:  )
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:62:13:
    warning: result of 'MyCookieManager' initializer is unused
                MyCookieManager(registrar: registrar)
                ^              ~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:228:45:
    warning: result of call to 'parse(options:)' is unused
                            inAppBrowserOptions.parse(options: inAppBrowserOptionsMap)
                                                ^    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:353:39:
    error: 'UIWindowLevel' has been renamed to 'UIWindow.Level'
            self.tmpWindow?.windowLevel = UIWindowLevel(baseWindowLevel! + 1)
                                          ^~~~~~~~~~~~~
                                          UIWindow.Level
    UIKit.UIWindowLevel:2:18: note: 'UIWindowLevel' was obsoleted in Swift 4.2
    public typealias UIWindowLevel = UIWindow.Level
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:362:31:
    warning: result of call to 'parse(options:)' is unused
                    safariOptions.parse(options: options)
                                  ^    ~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:400:32:
    warning: result of call to 'parse(options:)' is unused
                    browserOptions.parse(options: optionsFallback!)
                                   ^    ~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:403:32:
    warning: result of call to 'parse(options:)' is unused
                    webViewOptions.parse(options: optionsFallback!)
                                   ^    ~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:408:28:
    warning: result of call to 'parse(options:)' is unused
                browserOptions.parse(options: options)
                               ^    ~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:411:28:
    warning: result of call to 'parse(options:)' is unused
                webViewOptions.parse(options: options)
                               ^    ~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:417:94:
    warning: forced cast from 'InAppBrowserWebViewController??' to 'InAppBrowserWebViewController' only unwraps optionals; did you mean to use '!!'?
            let webViewController: InAppBrowserWebViewController = self.webViewControllers[uuid] as! InAppBrowserWebViewController
                                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                                                                !! 
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:438:47:
    error: cannot assign value of type 'Double' to type 'UIWindow.Level'
                    self.tmpWindow?.windowLevel = 0.0
                                                  ^~~
                                                  UIWindow.Level(rawValue:  )
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:469:39:
    error: 'UIWindowLevel' has been renamed to 'UIWindow.Level'
            self.tmpWindow?.windowLevel = UIWindowLevel(baseWindowLevel! + 1)
                                          ^~~~~~~~~~~~~
                                          UIWindow.Level
    UIKit.UIWindowLevel:2:18: note: 'UIWindowLevel' was obsoleted in Swift 4.2
    public typealias UIWindowLevel = UIWindow.Level
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:476:24:
    warning: result of call to 'parse(options:)' is unused
            browserOptions.parse(options: options)
                           ^    ~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:479:24:
    warning: result of call to 'parse(options:)' is unused
            webViewOptions.parse(options: options)
                           ^    ~~~~~~~~~~~~~~~~~~
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:484:94:
    warning: forced cast from 'InAppBrowserWebViewController??' to 'InAppBrowserWebViewController' only unwraps optionals; did you mean to use '!!'?
            let webViewController: InAppBrowserWebViewController = self.webViewControllers[uuid] as! InAppBrowserWebViewController
                                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                                                                !! 
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:502:47:
    error: cannot assign value of type 'Double' to type 'UIWindow.Level'
                    self.tmpWindow?.windowLevel = 0.0
                                                  ^~~
                                                  UIWindow.Level(rawValue:  )
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:539:55:
    error: 'UIWindowLevel' has been renamed to 'UIWindow.Level'
                            self.tmpWindow?.windowLevel = UIWindowLevel(baseWindowLevel! + 1)
                                                          ^~~~~~~~~~~~~
                                                          UIWindow.Level
    UIKit.UIWindowLevel:2:18: note: 'UIWindowLevel' was obsoleted in Swift 4.2
    public typealias UIWindowLevel = UIWindow.Level
                     ^
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:561:59:
    error: cannot assign value of type 'Double' to type 'UIWindow.Level'
                                self.tmpWindow?.windowLevel = 0.0
                                                              ^~~
                                                              UIWindow.Level(rawValue:  )
    /Users/raynne/Documents/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_inappbrowser-1.2.1/ios/Classes/SwiftFlutterPlugin.swift:679:16:
    warning: value 'webViewController' was defined but never used; consider replacing with boolean test
            if let webViewController = self.webViewControllers[uuid] {
               ~~~~^~~~~~~~~~~~~~~~~~~~
                                                                     != nil
    Command CompileSwift failed with a nonzero exit code
    note: Using new build system
    note: Planning build
    note: Constructing build description

Encountered error while building for device.

duplicate awaiting-response resolved

opened by test4511 13

Crash after scanning - Android

Describe the bug When scanning a barcode the application crashes with this error:

E/AndroidRuntime(19560): java.lang.RuntimeException: Unable to destroy activity {xxxx/com.amolg.flutterbarcodescanner.BarcodeCaptureActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Thread$State java.lang.Thread.getState()' on a null object reference
E/AndroidRuntime(19560): 	at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:5438)
E/AndroidRuntime(19560): 	at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:5472)
E/AndroidRuntime(19560): 	at android.app.servertransaction.DestroyActivityItem.execute(DestroyActivityItem.java:44)
E/AndroidRuntime(19560): 	at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
E/AndroidRuntime(19560): 	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
E/AndroidRuntime(19560): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2270)
E/AndroidRuntime(19560): 	at android.os.Handler.dispatchMessage(Handler.java:107)
E/AndroidRuntime(19560): 	at android.os.Looper.loop(Looper.java:237)
E/AndroidRuntime(19560): 	at android.app.ActivityThread.main(ActivityThread.java:8125)
E/AndroidRuntime(19560): 	at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(19560): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)
E/AndroidRuntime(19560): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
E/AndroidRuntime(19560): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Thread$State java.lang.Thread.getState()' on a null object reference
E/AndroidRuntime(19560): 	at com.amolg.flutterbarcodescanner.camera.CameraSource$FrameProcessingRunnable.release(CameraSource.java:967)
E/AndroidRuntime(19560): 	at com.amolg.flutterbarcodescanner.camera.CameraSource.release(CameraSource.java:273)
E/AndroidRuntime(19560): 	at com.amolg.flutterbarcodescanner.camera.CameraSourcePreview.release(CameraSourcePreview.java:84)
E/AndroidRuntime(19560): 	at com.amolg.flutterbarcodescanner.BarcodeCaptureActivity.onDestroy(BarcodeCaptureActivity.java:266)
E/AndroidRuntime(19560): 	at android.app.Activity.performDestroy(Activity.java:8219)
E/AndroidRuntime(19560): 	at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1342)
E/AndroidRuntime(19560): 	at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:5423)
E/AndroidRuntime(19560): 	... 11 more

To Reproduce Just follow the example in the documentation. Nothing done in Android.

Smartphone (please complete the following information):

Device: Samsung S9
OS: Android 10

resolved Android

opened by ArielFerreiro 12

Does plugin require NSPhotoLibraryUsage ?

When I uploaded my app into AppStore I got the refusal with warning NSPhotoLibraryUsageDescription is absent. Does plugin require NSPhotoLibraryUsage ?
resolved app-deployment

opened by pamir72 11

Unhandled Exception: MissingPluginException

my code

Future scan() async {
    String res = await FlutterBarcodeScanner.scanBarcode("00ccbb", "Cancel", true);
    print("qr scan ${res}");
}

and report error

Unhandled Exception: MissingPluginException(No implementation found for method scanBarcode on channel flutter_barcode_scanner)
#0      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:300:7)

bug resolved

opened by MagicalWater 11

iOS build release fail
Describe the bug Some error appear when I tried to build release for iOS, below is the error I'm having: Running Xcode build...
Xcode build done. 1.7s Failed to build iOS app Error output from Xcode build: ↳ ** BUILD FAILED **

Xcode's output: ↳ error: Unexpected duplicate tasks: 1) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/jing/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_off.png' to '/Users/jing/Documents/All_Flutter_Project/onair_flutter/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_off.png' 2) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/jing/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_off.png' to '/Users/jing/Documents/All_Flutter_Project/onair_flutter/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_off.png' error: Unexpected duplicate tasks: 1) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/jing/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_on.png' to '/Users/jing/Documents/All_Flutter_Project/onair_flutter/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_on.png' 2) Target 'flutter_barcode_scanner' (project 'Pods') has copy command from '/Users/jing/Development/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_barcode_scanner-0.1.7/ios/Classes/resource.bundle/ic_flash_on.png' to '/Users/jing/Documents/All_Flutter_Project/onair_flutter/build/ios/Release-iphoneos/flutter_barcode_scanner/flutter_barcode_scanner.framework/ic_flash_on.png' note: Using new build systemnote: Planning buildnote: Constructing build description

Encountered error while building for device.

Flutter doctor: Doctor summary (to see all details, run flutter doctor -v): [✓] Flutter (Channel unknown, v1.9.1+hotfix.4, on Mac OS X 10.14.6 18G1012, locale en-MY)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2) [✓] Xcode - develop for iOS and macOS (Xcode 11.1) [✓] Android Studio (version 3.5) [✓] VS Code (version 1.39.2) [✓] Connected device (1 available)

• No issues found!

To Reproduce Steps to reproduce the behaviour:

run "flutter build ios --release -t lib/yourmain.dart" in terminal

bug resolved iOS
opened by JinG312 10
Barcode Scan Got Wrong Value

When I opened camera scan barcode sometime I got wrong code value and sometime I got correct code value. When I put my phone camera italic or shake hand I got wrong code. So how can we prevent this condition happen.

opened by hvannak 0
Redirecting to new screen not allowed after scanning is complete

Thanks for this wonderful plugin .

Description: After getting the value from streaming, redirecting to another screen to show that scanned value doesn't work. Stops redirecting to another screen after streaming is done in Flutter) . Tried so far: I have tried several times to redirect after getting the values but the camera seems to forcefully stay on foreground . Navigator redirect, GetX Redirect etc. but none seem to stop the foreground camera - thus, can't move to another screen .

opened by Farial-mahmod 0
Get rid of GMS dependency

Is your feature request related to a problem? Please describe. Not all Android devices come with Google Services support and some open-source app repositories strictly prohibit integrating proprietary packages like it.

Describe the solution you'd like It'd be great if this package could get rid of its dependency on Google Play services — specifically 'com.google.android.gms:play-services-vision.
enhancement

opened by 12people 1
is this Plugin Maintained ?

Hi Amol, Your Package is very important for people like who uses Flutter For Mobile Development I Don't Have Any Idea About Native Android / IOS Development First Timer in Mobile App Development and Flutter is my Platform

Request You to Maintain the Package and Fix the Bugs would be a great favor on None-Native Developers

Thank You
enhancement

opened by parmarjitesh 4

Releases(V2.0.0)

V2.0.0(Apr 24, 2021)

This release comes with stable null safety and bug fixes. Scanning with a front camera is a newly added feature in this release.
Source code(tar.gz)
Source code(zip)