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zxing | ZXing barcode scanning library for Java, Android | Barcode Processing library

 by   zxing Java Version: zxing-3.4.1 License: Apache-2.0

 by   zxing Java Version: zxing-3.4.1 License: Apache-2.0

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kandi X-RAY | zxing Summary

zxing is a Java library typically used in Utilities, Barcode Processing applications. zxing has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub, Maven.
The project is in maintenance mode, meaning, changes are driven by contributed patches. Only bug fixes and minor enhancements will be considered. The Barcode Scanner app can no longer be published, so it's unlikely any changes will be accepted for it. There is otherwise no active development or roadmap for this project. It is "DIY".
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • zxing has a highly active ecosystem.
  • It has 27959 star(s) with 9025 fork(s). There are 1708 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 10 open issues and 1074 have been closed. On average issues are closed in 0 days. There are no pull requests.
  • It has a positive sentiment in the developer community.
  • The latest version of zxing is zxing-3.4.1
zxing Support
Best in #Barcode Processing
Average in #Barcode Processing
zxing Support
Best in #Barcode Processing
Average in #Barcode Processing

quality kandi Quality

  • zxing has no bugs reported.
zxing Quality
Best in #Barcode Processing
Average in #Barcode Processing
zxing Quality
Best in #Barcode Processing
Average in #Barcode Processing

securitySecurity

  • zxing has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
zxing Security
Best in #Barcode Processing
Average in #Barcode Processing
zxing Security
Best in #Barcode Processing
Average in #Barcode Processing

license License

  • zxing is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
zxing License
Best in #Barcode Processing
Average in #Barcode Processing
zxing License
Best in #Barcode Processing
Average in #Barcode Processing

buildReuse

  • zxing releases are available to install and integrate.
  • Deployable package is available in Maven.
  • Build file is available. You can build the component from source.
  • Installation instructions are available. Examples and code snippets are not available.
zxing Reuse
Best in #Barcode Processing
Average in #Barcode Processing
zxing Reuse
Best in #Barcode Processing
Average in #Barcode Processing
Top functions reviewed by kandi - BETA

kandi has reviewed zxing and discovered the below as its top functions. This is intended to give you an instant insight into zxing implemented functionality, and help decide if they suit your requirements.

  • Encodes the minimal encoding of the given input string .
  • Decodes text compaction
  • Try to guess the charset from a byte array .
  • look ahead .
  • Detects the border points .
  • Add a new contact .
  • Matches a vard prefixed field .
  • Selects multiple best match patterns .
  • Encode a sequence of text in ECI
  • Returns the decoded string .

zxing Key Features

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

zxing Examples and Code Snippets

android:exported needs to be explicitly specified for <activity>. Apps targeting Android 12 and higher are required to specify

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<receiver android:name="<name_of_the_entry>"
                android:exported="false or true"
                tools:node="merge" />
----------------------- 
     <activity
                android:name="<activity which is giving error>"
                android:exported="true"
                tools:node="merge" />
----------------------- 
<activity android:name="name_of_the_activity_inside_library>"
    android:exported="false|true"
    tools:node="merge" />
----------------------- 
debugImplementation "androidx.fragment:fragment-testing:<version>"

androidTestImplementation "androidx.fragment:fragment-testing:<version>"
----------------------- 
debugImplementation "androidx.fragment:fragment-testing:<version>"

androidTestImplementation "androidx.fragment:fragment-testing:<version>"
----------------------- 
 android:exported="true"
----------------------- 
androidTestImplementation "androidx.test.ext:junit:1.1.3"
androidTestImplementation "androidx.compose.ui:ui-test-junit4:1.0.4"
----------------------- 
> java.util.concurrent.ExecutionException: com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED: Failed parse during installPackageLI: /data/app/xxxxx.tmp/base.apk (at Binary XML file line #129): YOUR.FULLY.QUALIFIED.NAME.FAILING.ACTIVITY: Targeting S+ (version 31 and above) requires that an explicit value for android:exported be defined when intent filters are present
----------------------- 
<activity android:name="androidx.test.core.app.InstrumentationActivityInvoker$BootstrapActivity"
android:exported="true"
tools:node="merge"/>

<activity android:name="androidx.test.core.app.InstrumentationActivityInvoker$EmptyActivity"
android:exported="true"
tools:node="merge"/>

<activity android:name="androidx.test.core.app.InstrumentationActivityInvoker$EmptyFloatingActivity"
android:exported="true"
tools:node="merge"/>
----------------------- 
 <activity
        android:name="com.test.activity.SplashActivity"
        android:clearTaskOnLaunch="true"
        android:label="@string/app_name"
        android:launchMode="singleTop"
        android:noHistory="true"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme.NoActionBar"
        android:exported="true">

   <receiver
        android:name="com.test.receiver.ShareReceiver"
        android:exported="true">
        <intent-filter>
            <action android:name="com.test.fcm.android.action.broadcast" />
        </intent-filter>
    </receiver>

   <service
        android:name="com.google.android.gms.tagmanager.InstallReferrerService"
        android:exported="true" />

testImplementation 'junit:junit:4.13.2' 
androidTestImplementation 'androidx.test:runner:1.4.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'com.razorpay:checkout:1.6.15'
----------------------- 
 <activity
        android:name="com.test.activity.SplashActivity"
        android:clearTaskOnLaunch="true"
        android:label="@string/app_name"
        android:launchMode="singleTop"
        android:noHistory="true"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme.NoActionBar"
        android:exported="true">

   <receiver
        android:name="com.test.receiver.ShareReceiver"
        android:exported="true">
        <intent-filter>
            <action android:name="com.test.fcm.android.action.broadcast" />
        </intent-filter>
    </receiver>

   <service
        android:name="com.google.android.gms.tagmanager.InstallReferrerService"
        android:exported="true" />

testImplementation 'junit:junit:4.13.2' 
androidTestImplementation 'androidx.test:runner:1.4.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'com.razorpay:checkout:1.6.15'
----------------------- 
 <activity
        android:name="com.test.activity.SplashActivity"
        android:clearTaskOnLaunch="true"
        android:label="@string/app_name"
        android:launchMode="singleTop"
        android:noHistory="true"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme.NoActionBar"
        android:exported="true">

   <receiver
        android:name="com.test.receiver.ShareReceiver"
        android:exported="true">
        <intent-filter>
            <action android:name="com.test.fcm.android.action.broadcast" />
        </intent-filter>
    </receiver>

   <service
        android:name="com.google.android.gms.tagmanager.InstallReferrerService"
        android:exported="true" />

testImplementation 'junit:junit:4.13.2' 
androidTestImplementation 'androidx.test:runner:1.4.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'com.razorpay:checkout:1.6.15'
----------------------- 
"com.google.dagger:hilt-android:2.38.1"
"com.google.dagger:hilt-android-gradle-plugin:2.38.1"
"com.google.dagger:hilt-android-compiler:2.38.1"
"com.google.dagger:hilt-android-testing:2.38.1"

"com.google.dagger:hilt-android:2.40.5"
"com.google.dagger:hilt-android-gradle-plugin:2.40.5"
"com.google.dagger:hilt-android-compiler:2.40.5"
"com.google.dagger:hilt-android-testing:2.40.5"
----------------------- 
"com.google.dagger:hilt-android:2.38.1"
"com.google.dagger:hilt-android-gradle-plugin:2.38.1"
"com.google.dagger:hilt-android-compiler:2.38.1"
"com.google.dagger:hilt-android-testing:2.38.1"

"com.google.dagger:hilt-android:2.40.5"
"com.google.dagger:hilt-android-gradle-plugin:2.40.5"
"com.google.dagger:hilt-android-compiler:2.40.5"
"com.google.dagger:hilt-android-testing:2.40.5"
----------------------- 
<receiver
    android:name="com.razorpay.RzpTokenReceiver"
    android:exported="false">
    <intent-filter>
        <action android:name="rzp.device_token.share" />
    </intent-filter>
</receiver>

<activity
    android:name="com.razorpay.CheckoutActivity"
    android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
    android:exported="true"
    android:theme="@style/CheckoutTheme">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <data
            android:host="rzp.io"
            android:scheme="io.rzp" />
    </intent-filter>
</activity>
----------------------- 
android:exported="true" <!-- or false as required -->
----------------------- 
<activity
     android:name=".MainActivity"
     android:exported="true" <** add this line on AndroidManifest.xml**
     android:launchMode="singleTop"
     android:theme="@style/LaunchTheme"
 </activity>

how to make ZxingScanner start scanning?

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<zxing:ZXingScannerView x:Name="qrCodeScannerView" 
                        OnScanResult="Handle_OnScanResult" 
                        IsScanning="true"
                        WidthRequest="1024" 
                        HeightRequest="400" />

        public void Handle_OnScanResult(Result scanResult)
        {
                qrCodeScannerView.IsScanning = false;
                // processing scanResult.Text here
        }

        protected override void OnAppearing()
        {
            base.OnAppearing();
            qrCodeScannerView.IsScanning = true;
        }

        protected override void OnDisappearing()
        {
            base.OnDisappearing();
            qrCodeScannerView.IsScanning = false;
        }
----------------------- 
<zxing:ZXingScannerView x:Name="qrCodeScannerView" 
                        OnScanResult="Handle_OnScanResult" 
                        IsScanning="true"
                        WidthRequest="1024" 
                        HeightRequest="400" />

        public void Handle_OnScanResult(Result scanResult)
        {
                qrCodeScannerView.IsScanning = false;
                // processing scanResult.Text here
        }

        protected override void OnAppearing()
        {
            base.OnAppearing();
            qrCodeScannerView.IsScanning = true;
        }

        protected override void OnDisappearing()
        {
            base.OnDisappearing();
            qrCodeScannerView.IsScanning = false;
        }
----------------------- 
private async void ButtonScan(object sender, EventArgs e)
{
    PermissionStatus granted = await Permissions.CheckStatusAsync<Permissions.Camera>();
    if (granted != PermissionStatus.Granted)
    {
        _ = await Permissions.RequestAsync<Permissions.Camera>();
    }
    if (granted == PermissionStatus.Granted)
    {
        try
        {
            MobileBarcodeScanner scanner = new MobileBarcodeScanner();
            ZXing.Result result = await scanner.Scan();
            if (result != null && result.Text != "")
            {
                //You access your scanned text with result.Text
                scanner.Cancel(); // <--- This closes the scanner
            }
        }
        catch (Exception)
        {
            await DisplayAlert("Problem", "Something went wrong.", "ΟΚ");
        }
    }
    else
    {
        await DisplayAlert("Problem", "No permissions to use camera.", "ΟΚ");
    }
} 

ZXing.Mobile.MobileBarcodeScanner.Initialize(Application);
----------------------- 
private async void ButtonScan(object sender, EventArgs e)
{
    PermissionStatus granted = await Permissions.CheckStatusAsync<Permissions.Camera>();
    if (granted != PermissionStatus.Granted)
    {
        _ = await Permissions.RequestAsync<Permissions.Camera>();
    }
    if (granted == PermissionStatus.Granted)
    {
        try
        {
            MobileBarcodeScanner scanner = new MobileBarcodeScanner();
            ZXing.Result result = await scanner.Scan();
            if (result != null && result.Text != "")
            {
                //You access your scanned text with result.Text
                scanner.Cancel(); // <--- This closes the scanner
            }
        }
        catch (Exception)
        {
            await DisplayAlert("Problem", "Something went wrong.", "ΟΚ");
        }
    }
    else
    {
        await DisplayAlert("Problem", "No permissions to use camera.", "ΟΚ");
    }
} 

ZXing.Mobile.MobileBarcodeScanner.Initialize(Application);

Unable to create package with jlink

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set manual_modules=,jdk.crypto.ec,jdk.localedata,javafx.controls,javafx.fxml,javafx.web,java.sql

zxing qr/barcode scanning using MVVM?

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 <zxing:ZXingScannerView
        IsAnalyzing="{Binding IsAnalyzing}"
        IsScanning="{Binding IsScanning}"
        OnScanResult="CameraScanner_OnScanResult" />

private void CameraScanner_OnScanResult(ZXing.Result result)
        {   
             ((MyViewModel)BindingContext).OnScanComplete(result.Text);
        }
----------------------- 
 <zxing:ZXingScannerView
        IsAnalyzing="{Binding IsAnalyzing}"
        IsScanning="{Binding IsScanning}"
        OnScanResult="CameraScanner_OnScanResult" />

private void CameraScanner_OnScanResult(ZXing.Result result)
        {   
             ((MyViewModel)BindingContext).OnScanComplete(result.Text);
        }
----------------------- 
ViewMode:
private Result bcScanResult;
    public Result BcScanResult
    {
        get => bcScanResult;
        set
        {

            if (value == bcScanResult)
                return;
            bcScanResult = value;
            OnPropertyChanged();
        }
    }

  public AsyncCommand BcScanCommand { get; }

  public CodeScanVM()
    {
        BcScanCommand = new AsyncCommand(BcScanCommand_Call);
    }

  async Task BcScanCommand_Call()
    {
        await App.Current.MainPage.DisplayAlert("Item", "Code Async 
        Command:" + Result, "OK");
        return;
    }

 View:
 <zxing:ZXingScannerView
            x:Name="ScanView"
            Result="{Binding BcScanResult}"
            ScanResultCommand="{Binding BcScanCommand }"
            IsScanning="True"
            WidthRequest="300"
            HeightRequest="300"/>
----------------------- 
<Button Text="QR Scan"
        TextColor="White"
        CornerRadius="30"
        Clicked="ButtonScan"/>

<Entry BackgroundColor="White"
       IsTextPredictionEnabled="False"
       TextTransform="Uppercase"
       FontSize="Body"
       TextChanged="Search"
       Placeholder="Search"
       TextColor="Black"
       PlaceholderColor="Black"
       x:Name="lblBarcode"
       Keyboard="Chat">

private async void ButtonScan(object sender, EventArgs e)
    {
        PermissionStatus granted = await Permissions.CheckStatusAsync<Permissions.Camera>();
        if (granted != PermissionStatus.Granted)
        {
            _ = await Permissions.RequestAsync<Permissions.Camera>();
        }
        if (granted == PermissionStatus.Granted)
        {
            try
            {
                MobileBarcodeScanner scanner = new MobileBarcodeScanner();
                ZXing.Result result = await scanner.Scan();
                if (result != null && result.Text != "")
                {
                    lblBarcode.Text = result.Text; // <--- This places the result of scanner at Entry/Label
                    scanner.Cancel(); // <--- This closes the scanner
                }
            }
            catch (Exception)
            {
                await DisplayAlert("Problem", "Something went wrong.", "ΟΚ");
            }
        }
        else
        {
            await DisplayAlert("Problem", "No permissions to use camera.", "ΟΚ");
        }
    }
----------------------- 
<Button Text="QR Scan"
        TextColor="White"
        CornerRadius="30"
        Clicked="ButtonScan"/>

<Entry BackgroundColor="White"
       IsTextPredictionEnabled="False"
       TextTransform="Uppercase"
       FontSize="Body"
       TextChanged="Search"
       Placeholder="Search"
       TextColor="Black"
       PlaceholderColor="Black"
       x:Name="lblBarcode"
       Keyboard="Chat">

private async void ButtonScan(object sender, EventArgs e)
    {
        PermissionStatus granted = await Permissions.CheckStatusAsync<Permissions.Camera>();
        if (granted != PermissionStatus.Granted)
        {
            _ = await Permissions.RequestAsync<Permissions.Camera>();
        }
        if (granted == PermissionStatus.Granted)
        {
            try
            {
                MobileBarcodeScanner scanner = new MobileBarcodeScanner();
                ZXing.Result result = await scanner.Scan();
                if (result != null && result.Text != "")
                {
                    lblBarcode.Text = result.Text; // <--- This places the result of scanner at Entry/Label
                    scanner.Cancel(); // <--- This closes the scanner
                }
            }
            catch (Exception)
            {
                await DisplayAlert("Problem", "Something went wrong.", "ΟΚ");
            }
        }
        else
        {
            await DisplayAlert("Problem", "No permissions to use camera.", "ΟΚ");
        }
    }

ZXing IntentIntegrator always asks to install Barcode Scanner app

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repositories {
    mavenCentral()
}

dependencies {
    implementation 'com.journeyapps:zxing-android-embedded:4.2.0'
    implementation 'androidx.appcompat:appcompat:1.0.2'
}

android {
    buildToolsVersion '28.0.3' // Older versions may give compile errors
}
----------------------- 
 <queries>
        <package android:name="com.google.zxing.client.android" />
 </queries>

Xamarin.Android Camera Permissions with ZXing.Net.Mobile only works after app restart

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using System.Threading.Tasks;
using Xamarin.Essentials;
using static Xamarin.Essentials.Permissions;

public static async Task<PermissionStatus> CheckAndRequestPermissionAsync<TPermission>()
        where TPermission : BasePermission, new()
    {
        TPermission permission = new TPermission();
        var status = await permission.CheckStatusAsync();
        if (status != PermissionStatus.Granted)
        {
            status = await permission.RequestAsync();
        }

        return status;
    }

var status = await PermissionsHelper.CheckAndRequestPermissionAsync<Permissions.Camera>();
if(status != PermissionStatus.Granted)
{
    return;
}
----------------------- 
using System.Threading.Tasks;
using Xamarin.Essentials;
using static Xamarin.Essentials.Permissions;

public static async Task<PermissionStatus> CheckAndRequestPermissionAsync<TPermission>()
        where TPermission : BasePermission, new()
    {
        TPermission permission = new TPermission();
        var status = await permission.CheckStatusAsync();
        if (status != PermissionStatus.Granted)
        {
            status = await permission.RequestAsync();
        }

        return status;
    }

var status = await PermissionsHelper.CheckAndRequestPermissionAsync<Permissions.Camera>();
if(status != PermissionStatus.Granted)
{
    return;
}

IndexOutOfBounds when encoding a PDF417

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BitMatrix bitMatrix = new MultiFormatWriter().encode(mContent, barcodeFormat, mWidth, mHeight, hintsMap);
    int realWidth = bitMatrix.getWidth();
    int realHeight = bitMatrix.getHeight();

    int[] pixels = new int[realWidth * realHeight];
    for (int i = 0; i < realHeight; i++) {
        for (int j = 0; j < realWidth; j++) {
            if (bitMatrix.get(j, i)) {
                pixels[i * realWidth + j] = 0x00000000;
            } else {
                pixels[i * realWidth + j] = 0xffffffff;
            }
        }
    }
    Bitmap bitmap = Bitmap.createBitmap(pixels, 0, realWidth, realWidth, realHeight, Bitmap.Config.RGB_565);

Processing Dialog after QR Scan in Xamarin

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Device.BeginInvokeOnMainThread(async () =>
{

    try
    {
        using (UserDialogs.Instance.Loading(("Processing")))
        {
            await Task.Delay(300);
                      
            //Your Service code
        }
    }
    catch (Exception ex)
    {
        var val = ex.Message;
        UserDialogs.Instance.Alert("Test", val.ToString(), "Ok");
    }
});
----------------------- 
try
{
    // QR Scan Result
    string qr_scan = result.Response;
    var result = JsonConvert.DeserializeObject<QRScan>(qr_scan);
    await MainThread.InvokeOnMainThreadAsync(() => CreateConnection());
}
catch (Exception error)
{ }
finally
{
    // navigate to next page
    await NavigationService.NavigateToAsync<NextViewModel>();
}

PDF417 decode and generate the same barcode using Swift

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// ...

var keyData = knownKey.data(using: .isoLatin1)!
keyData.append(secretData)

let image = generatePDF417Barcode(from: keyData)
----------------------- 
filter.setValue(codeData, forKey: "inputMessage")
filter.setValue(3, forKey: "inputCompactionMode")  // This is good (and the big difference)
filter.setValue(5, forKey: "inputDataColumns")     // This is fine, but probably unneeded
filter.setValue(0, forKey: "inputCorrectionLevel") // This is bad

cat /tmp/barcode.jpeg | jpegtopnm | ppmtopgm | pamthreshold | pamtopnm > new.pbm && ./pdf417decode -c -e new.pbm

0 7f54 0x02030000 (0)    // Left marker
0 6a38 0x00000007 (7)    // Number of rows function output
0 218c 0x00000076 (118)  // Total number of non-error correcting codewords
0 0211 0x00000385 (901)  // Latch to Byte Compaction mode
0 68cf 0x00000059 (89)   // Data
0 18ec 0x0000021c (540)
0 02e7 0x00000330 (816)
0 753c 0x00000004 (4)    // Number of columns function output
0 7e8a 0x00030001 (1)    // Right marker

1 7f54 0x02030000 (0)    // Left marker
1 7520 0x00010002 (2)    // Security Level function output
1 704a 0x00010334 (820)  // Data
1 31f2 0x000101a7 (423)
1 507b 0x000100c9 (201)
1 5e5f 0x00010319 (793)
1 6cf3 0x00010176 (374)
1 7d47 0x00010007 (7)    // Number of rows function output
1 7e8a 0x00030001 (1)    // Right marker

2 7f54 0x02030000 (0)    // Left marker
2 6a7e 0x00020004 (4)    // Number of columns function output
2 0fb2 0x0002037a (890)  // Data
2 6dfa 0x000200d9 (217)
2 5b3e 0x000200bc (188)
2 3bbc 0x00020180 (384)
2 5e0b 0x00020268 (616)
2 29e0 0x00020002 (2)    // Security Level function output 
2 7e8a 0x00030001 (1)    // Right marker

30 * (n/3) + ((N-1)/3)

30 * (n/3) + 3*e + (N-1) % 3
=> 0 + 3*e + (23%3) = 2
=> 3*e + 2 = 2
=> 3*e = 0
=> e = 0

30 * (n/3) + (c - 1)
=> 0 + c - 1 = 4
=> c = 5
----------------------- 
filter.setValue(codeData, forKey: "inputMessage")
filter.setValue(3, forKey: "inputCompactionMode")  // This is good (and the big difference)
filter.setValue(5, forKey: "inputDataColumns")     // This is fine, but probably unneeded
filter.setValue(0, forKey: "inputCorrectionLevel") // This is bad

cat /tmp/barcode.jpeg | jpegtopnm | ppmtopgm | pamthreshold | pamtopnm > new.pbm && ./pdf417decode -c -e new.pbm

0 7f54 0x02030000 (0)    // Left marker
0 6a38 0x00000007 (7)    // Number of rows function output
0 218c 0x00000076 (118)  // Total number of non-error correcting codewords
0 0211 0x00000385 (901)  // Latch to Byte Compaction mode
0 68cf 0x00000059 (89)   // Data
0 18ec 0x0000021c (540)
0 02e7 0x00000330 (816)
0 753c 0x00000004 (4)    // Number of columns function output
0 7e8a 0x00030001 (1)    // Right marker

1 7f54 0x02030000 (0)    // Left marker
1 7520 0x00010002 (2)    // Security Level function output
1 704a 0x00010334 (820)  // Data
1 31f2 0x000101a7 (423)
1 507b 0x000100c9 (201)
1 5e5f 0x00010319 (793)
1 6cf3 0x00010176 (374)
1 7d47 0x00010007 (7)    // Number of rows function output
1 7e8a 0x00030001 (1)    // Right marker

2 7f54 0x02030000 (0)    // Left marker
2 6a7e 0x00020004 (4)    // Number of columns function output
2 0fb2 0x0002037a (890)  // Data
2 6dfa 0x000200d9 (217)
2 5b3e 0x000200bc (188)
2 3bbc 0x00020180 (384)
2 5e0b 0x00020268 (616)
2 29e0 0x00020002 (2)    // Security Level function output 
2 7e8a 0x00030001 (1)    // Right marker

30 * (n/3) + ((N-1)/3)

30 * (n/3) + 3*e + (N-1) % 3
=> 0 + 3*e + (23%3) = 2
=> 3*e + 2 = 2
=> 3*e = 0
=> e = 0

30 * (n/3) + (c - 1)
=> 0 + c - 1 = 4
=> c = 5
----------------------- 
filter.setValue(codeData, forKey: "inputMessage")
filter.setValue(3, forKey: "inputCompactionMode")  // This is good (and the big difference)
filter.setValue(5, forKey: "inputDataColumns")     // This is fine, but probably unneeded
filter.setValue(0, forKey: "inputCorrectionLevel") // This is bad

cat /tmp/barcode.jpeg | jpegtopnm | ppmtopgm | pamthreshold | pamtopnm > new.pbm && ./pdf417decode -c -e new.pbm

0 7f54 0x02030000 (0)    // Left marker
0 6a38 0x00000007 (7)    // Number of rows function output
0 218c 0x00000076 (118)  // Total number of non-error correcting codewords
0 0211 0x00000385 (901)  // Latch to Byte Compaction mode
0 68cf 0x00000059 (89)   // Data
0 18ec 0x0000021c (540)
0 02e7 0x00000330 (816)
0 753c 0x00000004 (4)    // Number of columns function output
0 7e8a 0x00030001 (1)    // Right marker

1 7f54 0x02030000 (0)    // Left marker
1 7520 0x00010002 (2)    // Security Level function output
1 704a 0x00010334 (820)  // Data
1 31f2 0x000101a7 (423)
1 507b 0x000100c9 (201)
1 5e5f 0x00010319 (793)
1 6cf3 0x00010176 (374)
1 7d47 0x00010007 (7)    // Number of rows function output
1 7e8a 0x00030001 (1)    // Right marker

2 7f54 0x02030000 (0)    // Left marker
2 6a7e 0x00020004 (4)    // Number of columns function output
2 0fb2 0x0002037a (890)  // Data
2 6dfa 0x000200d9 (217)
2 5b3e 0x000200bc (188)
2 3bbc 0x00020180 (384)
2 5e0b 0x00020268 (616)
2 29e0 0x00020002 (2)    // Security Level function output 
2 7e8a 0x00030001 (1)    // Right marker

30 * (n/3) + ((N-1)/3)

30 * (n/3) + 3*e + (N-1) % 3
=> 0 + 3*e + (23%3) = 2
=> 3*e + 2 = 2
=> 3*e = 0
=> e = 0

30 * (n/3) + (c - 1)
=> 0 + c - 1 = 4
=> c = 5
----------------------- 
filter.setValue(codeData, forKey: "inputMessage")
filter.setValue(3, forKey: "inputCompactionMode")  // This is good (and the big difference)
filter.setValue(5, forKey: "inputDataColumns")     // This is fine, but probably unneeded
filter.setValue(0, forKey: "inputCorrectionLevel") // This is bad

cat /tmp/barcode.jpeg | jpegtopnm | ppmtopgm | pamthreshold | pamtopnm > new.pbm && ./pdf417decode -c -e new.pbm

0 7f54 0x02030000 (0)    // Left marker
0 6a38 0x00000007 (7)    // Number of rows function output
0 218c 0x00000076 (118)  // Total number of non-error correcting codewords
0 0211 0x00000385 (901)  // Latch to Byte Compaction mode
0 68cf 0x00000059 (89)   // Data
0 18ec 0x0000021c (540)
0 02e7 0x00000330 (816)
0 753c 0x00000004 (4)    // Number of columns function output
0 7e8a 0x00030001 (1)    // Right marker

1 7f54 0x02030000 (0)    // Left marker
1 7520 0x00010002 (2)    // Security Level function output
1 704a 0x00010334 (820)  // Data
1 31f2 0x000101a7 (423)
1 507b 0x000100c9 (201)
1 5e5f 0x00010319 (793)
1 6cf3 0x00010176 (374)
1 7d47 0x00010007 (7)    // Number of rows function output
1 7e8a 0x00030001 (1)    // Right marker

2 7f54 0x02030000 (0)    // Left marker
2 6a7e 0x00020004 (4)    // Number of columns function output
2 0fb2 0x0002037a (890)  // Data
2 6dfa 0x000200d9 (217)
2 5b3e 0x000200bc (188)
2 3bbc 0x00020180 (384)
2 5e0b 0x00020268 (616)
2 29e0 0x00020002 (2)    // Security Level function output 
2 7e8a 0x00030001 (1)    // Right marker

30 * (n/3) + ((N-1)/3)

30 * (n/3) + 3*e + (N-1) % 3
=> 0 + 3*e + (23%3) = 2
=> 3*e + 2 = 2
=> 3*e = 0
=> e = 0

30 * (n/3) + (c - 1)
=> 0 + c - 1 = 4
=> c = 5
----------------------- 
filter.setValue(codeData, forKey: "inputMessage")
filter.setValue(3, forKey: "inputCompactionMode")  // This is good (and the big difference)
filter.setValue(5, forKey: "inputDataColumns")     // This is fine, but probably unneeded
filter.setValue(0, forKey: "inputCorrectionLevel") // This is bad

cat /tmp/barcode.jpeg | jpegtopnm | ppmtopgm | pamthreshold | pamtopnm > new.pbm && ./pdf417decode -c -e new.pbm

0 7f54 0x02030000 (0)    // Left marker
0 6a38 0x00000007 (7)    // Number of rows function output
0 218c 0x00000076 (118)  // Total number of non-error correcting codewords
0 0211 0x00000385 (901)  // Latch to Byte Compaction mode
0 68cf 0x00000059 (89)   // Data
0 18ec 0x0000021c (540)
0 02e7 0x00000330 (816)
0 753c 0x00000004 (4)    // Number of columns function output
0 7e8a 0x00030001 (1)    // Right marker

1 7f54 0x02030000 (0)    // Left marker
1 7520 0x00010002 (2)    // Security Level function output
1 704a 0x00010334 (820)  // Data
1 31f2 0x000101a7 (423)
1 507b 0x000100c9 (201)
1 5e5f 0x00010319 (793)
1 6cf3 0x00010176 (374)
1 7d47 0x00010007 (7)    // Number of rows function output
1 7e8a 0x00030001 (1)    // Right marker

2 7f54 0x02030000 (0)    // Left marker
2 6a7e 0x00020004 (4)    // Number of columns function output
2 0fb2 0x0002037a (890)  // Data
2 6dfa 0x000200d9 (217)
2 5b3e 0x000200bc (188)
2 3bbc 0x00020180 (384)
2 5e0b 0x00020268 (616)
2 29e0 0x00020002 (2)    // Security Level function output 
2 7e8a 0x00030001 (1)    // Right marker

30 * (n/3) + ((N-1)/3)

30 * (n/3) + 3*e + (N-1) % 3
=> 0 + 3*e + (23%3) = 2
=> 3*e + 2 = 2
=> 3*e = 0
=> e = 0

30 * (n/3) + (c - 1)
=> 0 + c - 1 = 4
=> c = 5
----------------------- 
filter.setValue(codeData, forKey: "inputMessage")
filter.setValue(3, forKey: "inputCompactionMode")  // This is good (and the big difference)
filter.setValue(5, forKey: "inputDataColumns")     // This is fine, but probably unneeded
filter.setValue(0, forKey: "inputCorrectionLevel") // This is bad

cat /tmp/barcode.jpeg | jpegtopnm | ppmtopgm | pamthreshold | pamtopnm > new.pbm && ./pdf417decode -c -e new.pbm

0 7f54 0x02030000 (0)    // Left marker
0 6a38 0x00000007 (7)    // Number of rows function output
0 218c 0x00000076 (118)  // Total number of non-error correcting codewords
0 0211 0x00000385 (901)  // Latch to Byte Compaction mode
0 68cf 0x00000059 (89)   // Data
0 18ec 0x0000021c (540)
0 02e7 0x00000330 (816)
0 753c 0x00000004 (4)    // Number of columns function output
0 7e8a 0x00030001 (1)    // Right marker

1 7f54 0x02030000 (0)    // Left marker
1 7520 0x00010002 (2)    // Security Level function output
1 704a 0x00010334 (820)  // Data
1 31f2 0x000101a7 (423)
1 507b 0x000100c9 (201)
1 5e5f 0x00010319 (793)
1 6cf3 0x00010176 (374)
1 7d47 0x00010007 (7)    // Number of rows function output
1 7e8a 0x00030001 (1)    // Right marker

2 7f54 0x02030000 (0)    // Left marker
2 6a7e 0x00020004 (4)    // Number of columns function output
2 0fb2 0x0002037a (890)  // Data
2 6dfa 0x000200d9 (217)
2 5b3e 0x000200bc (188)
2 3bbc 0x00020180 (384)
2 5e0b 0x00020268 (616)
2 29e0 0x00020002 (2)    // Security Level function output 
2 7e8a 0x00030001 (1)    // Right marker

30 * (n/3) + ((N-1)/3)

30 * (n/3) + 3*e + (N-1) % 3
=> 0 + 3*e + (23%3) = 2
=> 3*e + 2 = 2
=> 3*e = 0
=> e = 0

30 * (n/3) + (c - 1)
=> 0 + c - 1 = 4
=> c = 5

How to properly set options for ZXingScannerView?

copy iconCopydownload iconDownload
public ScanPage()
        {
            InitializeComponent();
            scanView.Options = opts;
        }

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QUESTION

Firebase crashlytics not able to read crash reports

Asked 2022-Apr-11 at 14:08

I have configured crashlytics as per Firebase Documentation https://firebase.google.com/docs/crashlytics/get-started?platform=android. But crash reports not generated and uploaded to server.

server

Kindly refer my build details.

Here is our project-level build.gradle

buildscript {
    
    repositories {
        google()
        jcenter()

        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.1'
        classpath 'com.google.gms:google-services:4.3.10'
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.8.1'

    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven { url 'https://jitpack.io'}
        maven{ url 'https://maven.google.com/' }
        mavenCentral()

        flatDir {
            dirs 'libs'
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle(:app)

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply plugin: 'com.google.firebase.crashlytics'

android {

    compileSdkVersion 28
    defaultConfig {
        applicationId "com.XXX.XXX"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 375
        versionName "2.25.1"

        multiDexEnabled true
        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
        dataBinding {
            enabled = true
        }
        signingConfig signingConfigs.config
    }

    android {
        lintOptions {
            checkReleaseBuilds false
            abortOnError false
        }
    }

    flavorDimensions "appVariant", "projectCode"
    productFlavors {
        A {
            applicationId 'com.XXX.A'
            dimension "appVariant"
        }
        B {
            applicationId 'com.XXX.B'
            dimension "appVariant"
        }
        C {
            applicationId 'com.XXX.C'
            dimension "appVariant"
        }
        D {
            applicationId 'com.XXX.D'
            dimension "appVariant"
        }
        DEV {
            dimension "projectCode"
        }
        QA {
            dimension "projectCode"
        }
        LIVE {
            dimension "projectCode"
        }
        DEMO {
            dimension "projectCode"
        }
        BETA {
            dimension "projectCode"
        }
    }

    applicationVariants.all { variant ->
        variant.outputs.all { output ->
            def project = "XXX"
            def SEP = "_"
            def flavor = variant.productFlavors[0].name
            def projcode = variant.productFlavors[1].name
            def buildType = variant.buildType.name
            def buildTypeName = "";
            switch (buildType) {
                case "ABC": buildTypeName = SEP + "AB"; break;
                case "XYZ": buildTypeName = SEP + "XY"; break;
                default:
                    buildTypeName = "";
            }

            def version = variant.versionName
            def newApkName = project + buildTypeName + SEP + flavor + SEP + projcode + SEP + version + ".apk"

            outputFileName = new File(newApkName)
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    buildTypes {
        debug {

            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.config
            buildConfigField "String", "AREA", "\"\""
        }
        
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.config
            buildConfigField "String", "AREA", "\"\""
        }
        ABC {
            signingConfig signingConfigs.config
            minifyEnabled false
            buildConfigField "String", "AREA", "\"_A\""
        }
        XYZ {
            signingConfig signingConfigs.config
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.config
            buildConfigField "String", "AREA", "\"_X\""
        }
    }
    
    packagingOptions {
        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'
    }
}

repositories {

    maven {
        url 'https://maven.google.com/'
        name 'Google'
    }

}

dependencies {
    def room_version = "1.1.1"
    def lifecycle_version = "1.1.1"
    def work_version = "1.0.0-beta01"
    implementation files('libs/commons-net-3.3.jar')
    implementation files('libs/httpclient-4.3.4.jar')
    implementation files('libs/httpcore-4.3.2.jar')
    implementation files('libs/httpmime-4.3.4.jar')
    implementation files('libs/silipmlib.jar')
    implementation files('libs/HyperLogLib8.jar')
    
    // Import the BoM for the Firebase platform
    implementation platform('com.google.firebase:firebase-bom:29.3.0')
    
    implementation 'com.google.firebase:firebase-crashlytics'
    implementation 'com.google.firebase:firebase-analytics'
    implementation 'com.google.firebase:firebase-messaging'

    //dependency for Workmanager
    implementation 'androidx.work:work-runtime:2.0.1'

    //dependencies for Room database
    implementation 'androidx.room:room-runtime:2.0.0'
    //noinspection GradleCompatible
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    annotationProcessor 'androidx.room:room-compiler:2.0.0'
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'androidx.appcompat:appcompat:1.0.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.android.material:material:1.0.0'
    //dependency for custom progress dialog

    //dependency for retrofit
    implementation 'com.squareup.retrofit2:retrofit:2.4.0'
    implementation 'com.google.code.gson:gson:2.8.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.1.0'

    //dependency for joda time for date time calculation
    implementation 'joda-time:joda-time:2.10'

    //dependency for glide
    implementation 'com.github.bumptech.glide:glide:3.7.0'

    //dependency for custom toast
    implementation 'com.valdesekamdem.library:md-toast:0.9.0'

    //dependency for marshmallow permission - dexter library
    implementation 'com.karumi:dexter:4.2.0'

    // ViewModel and LiveData
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
    annotationProcessor 'androidx.lifecycle:lifecycle-compiler:2.0.0'

    // alternately - if using Java8, use the following instead of compiler
    implementation 'androidx.lifecycle:lifecycle-common-java8:2.0.0'

    implementation 'com.jakewharton:butterknife:10.1.0'
    annotationProcessor 'com.jakewharton:butterknife-compiler:10.1.0'

    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
    implementation project(':floatingmenu')
    implementation project(':html2bitmap')
    debugImplementation 'com.amitshekhar.android:debug-db:1.0.4'
    implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
    implementation 'com.github.vipulasri:timelineview:1.0.6'
    implementation 'me.relex:circleindicator:1.2.2@aar'
    implementation 'com.haozhang.libary:android-slanted-textview:1.2'
    implementation 'com.google.android.gms:play-services-maps:15.0.1'
    implementation 'com.google.android.gms:play-services-location:15.0.1'

    // implementation 'com.google.android.gms:play-services-gcm:11.8.0'

    // implementation 'com.google.android.gms:play-services-ads:11.8.0'
    implementation('com.github.florent37:materialviewpager:1.2.3') {
        exclude group: 'com.android.support'
    }

    implementation 'com.orhanobut:dialogplus:1.11@aar'

    //  implementation 'me.dm7.barcodescanner:zbar:1.8.4'
    implementation 'me.dm7.barcodescanner:zxing:1.9'
    implementation 'com.journeyapps:zxing-android-embedded:2.3.0@aar'
    implementation 'com.journeyapps:zxing-android-legacy:2.3.0@aar'
    implementation 'com.journeyapps:zxing-android-integration:2.3.0@aar'
    implementation 'com.google.zxing:core:3.2.0'
    implementation 'net.cachapa.expandablelayout:expandablelayout:2.9.2'
    implementation 'com.github.siyamed:android-shape-imageview:0.9.+@aar'
    implementation files('libs/HyperLogLib8.jar')
    implementation project(':scandecode-release')
    implementation 'com.tt:whorlviewlibrary:1.0.3'
    implementation 'io.reactivex:rxandroid:1.2.1'
    implementation 'io.reactivex:rxjava:1.1.6'
    implementation 'com.jakewharton.rxbinding:rxbinding:0.4.0'
    implementation 'com.jakewharton.rxbinding:rxbinding-design:0.4.0'

    implementation 'org.apache.commons:commons-text:1.7'

    // these are for retrolambda and streams api
    implementation 'com.annimon:stream:1.1.2'

}

With initialisation:

FirebaseApp.initializeApp(this)
FirebaseCrashlytics.getInstance().setCrashlyticsCollectionEnabled(true)

And manifest:

<meta-data
            android:name="firebase_crashlytics_collection_enabled"
            android:value="true" />

Here is the logcat for the Crashlytics/CrashTest crash:

2022-04-10 15:53:07.717 21310-21310/com.XXX.XXX E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.XXX.XXX, PID: 21310
    java.lang.RuntimeException: Test Crash
        at com.XXX.XXX.UI.HomeActivity$1.onClick(HomeActivity.java:345)
        at android.view.View.performClick(View.java:6392)
        at android.view.View$PerformClick.run(View.java:25133)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:198)
        at android.app.ActivityThread.main(ActivityThread.java:7055)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:523)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:836)

This is the log that we receive when app relaunched after crash.

D:\user\Android Projects\XXX>adb logcat -s FirebaseCrashlytics
--------- beginning of main
--------- beginning of system
--------- beginning of crash
04-10 15:54:56.911 22018 22018 I FirebaseCrashlytics: Initializing Firebase Crashlytics 18.2.9 for com.XXX.XXX
04-10 15:54:56.926 22018 22018 D FirebaseCrashlytics: Crashlytics automatic data collection ENABLED by API.
04-10 15:54:56.940 22018 22018 D FirebaseCrashlytics: AnalyticsConnector now available.
04-10 15:54:56.943 22018 22018 D FirebaseCrashlytics: Registered Firebase Analytics listener.
04-10 15:54:56.948 22018 22018 D FirebaseCrashlytics: Mapping file ID is: 00000000000000000000000000000000
04-10 15:54:56.958 22018 22018 D FirebaseCrashlytics: Checking for cached settings...
04-10 15:54:56.992 22018 22018 D FirebaseCrashlytics: Loaded cached settings: {"settings_version":3,"cache_duration":86400,"features":{"collect_logged_exceptions":true,"collect_reports":
true,"collect_analytics":false,"prompt_enabled":false,"push_enabled":false,"firebase_crashlytics_enabled":false,"collect_anrs":true,"collect_metric_kit":false},"app":{"status":"activated
","update_required":false,"report_upload_variant":2,"native_report_upload_variant":2},"fabric":{"org_id":"62513aa60277ea5e0396d4ef","bundle_id":"com.XXX.XXX"},"on_demand_
upload_rate_per_minute":10,"on_demand_backoff_base":1.2,"on_demand_backoff_step_duration_seconds":60,"expires_at":1649666891559}
04-10 15:54:56.996 22018 22018 D FirebaseCrashlytics: Crashlytics automatic data collection ENABLED by API.
04-10 15:54:57.113 22018 22018 D FirebaseCrashlytics: Successfully configured exception handler.
04-10 15:54:57.116 22018 22049 D FirebaseCrashlytics: Opening a new session with ID 6252B07803E20001560228F94565CB5E
04-10 15:54:57.183 22018 22049 D FirebaseCrashlytics: Registered Firebase Analytics event receiver for breadcrumbs
04-10 15:54:58.013 22018 22018 D FirebaseCrashlytics: Crashlytics automatic data collection ENABLED by API.
04-10 15:54:58.642 22018 22018 D FirebaseCrashlytics: Crashlytics automatic data collection ENABLED by API.

These are set to false in cached settings:

"collect_analytics":false,
"firebase_crashlytics_enabled":false,

This setting was weird. Both of them are false for some reason though I never did turn them off explicitly. Never even played with these settings.

Not sure what is wrong. Any help will be appreciated.

ANSWER

Answered 2022-Apr-11 at 14:08

Solved!..
There was another utility logger library initialized in the application class that prevented crashlytics from collecting log. https://github.com/hypertrack/hyperlog-android

Also the initialization & manifest part is not necessary unless you want to explicitly enable/disable crashlytics working.

Source https://stackoverflow.com/questions/71815836

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install zxing

To get started, please visit: https://github.com/zxing/zxing/wiki/Getting-Started-Developing. ZXing ("zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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