Duplicate class com.google.zxing.Binarizer found in modules jetified-com.google.zxing.client.android.captureactivity.jar and jetified-core-3.3.3.jar

Issue

So I tried running ionic cordova run android but I get a build failed with an exception.

Duplicate class com.google.zxing.Binarizer found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.BinaryBitmap found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.ChecksumException found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.DecodeHintType found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.EncodeHintType found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.FormatException found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.LuminanceSource found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.MultiFormatReader found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.MultiFormatWriter found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.MultiFormatWriter$1 found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.NotFoundException found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.PlanarYUVLuminanceSource found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.RGBLuminanceSource found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3) Duplicate class com.google.zxing.Reader found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3)

And the list goes on and finishes with :

Duplicate class com.google.zxing.qrcode.encoder.QRCode found in modules jetified-com.google.zxing.client.android.captureactivity.jar (com.google.zxing.client.android.captureactivity.jar) and jetified-core-3.3.3.jar (com.google.zxing:core:3.3.3)

Go to the documentation to learn how to Fix dependency resolution errors.

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

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

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0. Use '--warning-mode all' to show the individual deprecation warnings. See https://docs.gradle.org/6.5/userguide/command_line_interface.html#sec:command_line_warnings

Here is my build.gradle file :

buildscript {
ext.kotlin_version = '1.3.50'
apply from: 'repositories.gradle'
repositories repos

dependencies {
    classpath 'com.android.tools.build:gradle:4.0.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
  }
  }

allprojects {
    apply from: 'repositories.gradle'
    repositories repos

project.ext {
  defaultBuildToolsVersion="29.0.2" //String
  defaultMinSdkVersion=22 //Integer - Minimum requirement is Android 5.1
  defaultTargetSdkVersion=29 //Integer - We ALWAYS target the latest by default
  defaultCompileSdkVersion=29 //Integer - We ALWAYS compile with the latest by default
}
}

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

I Tried :

1. Adding : configurations {compile.exclude group: 'com.google.zxing'} to build.gradle
2. removed the android platform from cordova and then adding it.
3. removed the barcodescanner plugin then adding it.

I have been stuck with this one for almost a week.

Solution

The problem was caused because of a conflict between facebook4 plugin and barcodeScanner plugin. Both use a library called ZXing which will cause a conflict.

The easy fix (hard to find) was to remove the facebook plugin and add the same one without the zxing library.

ionic cordova platform rm android
ionic cordova plugin rm cordova-plugin-facebook4 --save --variable APP_ID="ID" --variable APP_NAME="NAME"
ionic cordova plugin add https://github.com/AndreiTelteu/cordova-plugin-facebook4-no-zxing --save --variable APP_ID="ID" --variable APP_NAME="NAME"
ionic cordova platform add android
ionic cordova platform rm android

This fixed my problem. Note that there is nothing to edit in your code.

Check the git repo for more info: https://github.com/AndreiTelteu/cordova-plugin-facebook4-no-zxing

Answered By - Riad Rekab