Execution failed for task ':app:checkDebugDuplicateClasses'. Ionic4 Android

Question

I'm currently working on an ionic4 application, but recently it stopped working while building the application on an android reall device after adding https://ionicframework.com/docs/native/fcm plugin to the application.

At first it was complaining about fabric key, however I never aimed to use fabric crashlytic on my app.

The error logs:

* What went wrong:
Execution failed for task ':app:checkDebugDuplicateClasses'.
> 1 exception was raised by workers:
  java.lang.RuntimeException: Duplicate class android.support.v4.app.INotificationSideChannel found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.app.INotificationSideChannel$Stub found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.app.INotificationSideChannel$Stub$Proxy found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.IResultReceiver found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.IResultReceiver$Stub found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.IResultReceiver$Stub$Proxy found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver$1 found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver$MyResultReceiver found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver$MyRunnable found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)

  Go to the documentation to learn how to <a href="d.android.com/r/tools/classpath-sync-errors">Fix dependency resolution errors</a>.


* 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

BUILD FAILED in 21s

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.4.1/userguide/command_line_interface.html#sec:command_line_warnings
35 actionable tasks: 5 executed, 30 up-to-date
cmd: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugDuplicateClasses'.
> 1 exception was raised by workers:
  java.lang.RuntimeException: Duplicate class android.support.v4.app.INotificationSideChannel found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.app.INotificationSideChannel$Stub found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.app.INotificationSideChannel$Stub$Proxy found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.IResultReceiver found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.IResultReceiver$Stub found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.IResultReceiver$Stub$Proxy found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver$1 found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver$MyResultReceiver found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)
  Duplicate class android.support.v4.os.ResultReceiver$MyRunnable found in modules classes.jar (androidx.core:core:1.0.0) and classes.jar (com.android.support:support-compat:27.1.1)

  Go to the documentation to learn how to <a href="d.android.com/r/tools/classpath-sync-errors">Fix dependency resolution errors</a>.


* 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

BUILD FAILED in 21s
[ERROR] An error occurred while running subprocess cordova.

        cordova run android exited with exit code 1.

        Re-running this command with the --verbose flag may provide more information.

android/app/build.gradle

buildscript {
    repositories {
        google()
        jcenter()
        maven { url 'https://maven.fabric.io/public' } // Fabrics Maven repository from cordova-plugin-firebase
    }
    dependencies {

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath 'com.android.tools.build:gradle:3.4.0+'
        classpath 'com.google.gms:google-services:4.2.0' // google-services dependency from cordova-plugin-firebase
        classpath 'io.fabric.tools:gradle:1.+' // fabric dependency from cordova-plugin-firebase
    }
}

allprojects {
    repositories {

        jcenter()
        google() // Google's Maven repository from cordova-plugin-firebase
    }
    //This replaces project.properties w.r.t. build settings
    project.ext {
      defaultBuildToolsVersion="28" //String
      defaultMinSdkVersion=19 //Integer - Minimum requirement is Android 4.4
      defaultTargetSdkVersion=28 //Integer - We ALWAYS target the latest by default
      defaultCompileSdkVersion=28 //Integer - We ALWAYS compile with the latest by default
    }
}

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

cordova-plugin-firebase/raihan-build.gradle

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
       classpath 'com.android.tools.build:gradle:3.4.0+'
        classpath 'com.google.gms:google-services:4.2.0'
    }
}


dependencies {
    compile 'me.leolin:ShortcutBadger:1.1.4@aar'
    compile 'com.google.firebase:firebase-auth:+'
    compile('com.crashlytics.sdk.android:crashlytics:2.9.1@aar') {
       transitive = true
    }
}
cdvPluginPostBuildExtras.add({
    // apply plugin: 'com.google.gms.google-services'
    apply plugin: 'io.fabric'
})

cordova-plugin-fcm-with-dependecy-updated/raihan-FCMPlugin.gradle

buildscript {
    repositories {
       google()
        jcenter()
        mavenLocal()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.0+'
        classpath 'com.google.gms:google-services:4.2.0'
    }
}
repositories {
    google()
    jcenter()
}
dependencies {
    compile 'com.google.firebase:firebase-core:16.0.8'
}
// apply plugin: 'com.google.gms.google-services'
// class must be used instead of id(string) to be able to apply plugin from non-root gradle file
// apply plugin: com.google.gms.googleservices.GoogleServicesPlugin

android/project.properties

 target=android-27
    android.library.reference.1=CordovaLib
    android.library.reference.2=app
    cordova.gradle.include.1=cordova-android-support-gradle-release/raihan-cordova-android-support-gradle-release.gradle
    cordova.system.library.1=com.squareup.okhttp3:okhttp-urlconnection:3.10.0
    cordova.system.library.2=com.android.support:support-v4:24.1.1+
    cordova.system.library.3=com.soundcloud.android:android-crop:1.0.0@aar
    cordova.system.library.4=com.google.firebase:firebase-core:16.0.8
    cordova.system.library.4=com.google.firebase:firebase-iid:17.1.1
    cordova.system.library.5=com.google.firebase:firebase-messaging:17.5.0
    cordova.gradle.include.2=cordova-plugin-fcm-with-dependecy-updated/raihan-FCMPlugin.gradle
    cordova.gradle.include.3=cordova-support-google-services/raihan-build.gradle
    cordova.system.library.6=com.google.firebase:firebase-auth:16.2.0
    cordova.system.library.6=com.google.firebase:firebase-perf:16.2.4
    cordova.system.library.7=com.android.support:support-annotations:27.+
    cordova.system.library.8=com.android.support:appcompat-v7:23+
    cordova.system.library.8=com.google.firebase:firebase-iid:17.1.1
    cordova.system.library.8=com.google.android.gms:play-services-tagmanager:16.0.8
    cordova.system.library.8=com.google.firebase:firebase-config:16.4.0
    cordova.gradle.include.4=cordova-plugin-telerik-imagepicker/raihan-ignorelinterrors.gradle
    cordova.gradle.include.5=cordova-plugin-telerik-imagepicker/raihan-androidtarget.gradle
    cordova.gradle.include.6=cordova-android-support-gradle-release/raihan-cordova-android-support-gradle-release.gradle
    cordova.gradle.include.7=cordova-plugin-firebase/raihan-build.gradle

I have provided the above files, let me know if I need to upload anything else.

Answer 1

1. Go to gradle.properties(project properties)

2. Add
   android.enableJetifier=true

3. And also most of time android.useAndroidX=true is present.Check your gradle.properties(Project Properties) and if it does not exist then add
   android.useAndroidX=true -> Look Likes This Image

Answer 2

Simply add below lines into your gradle.properties file:

android.useAndroidX=true
android.enableJetifier=true

Note to check, to not repeat any line that already exists (and ensure existing are true).

---

Details

If you want to use androidx-namespaced libraries in a new project, you need to set the compile SDK to Android 9.0 (API level 28) or higher and set both of the mentioned Android Gradle plugin flags to true.

android.useAndroidX: When this flag is set to true, the Android plugin uses the appropriate AndroidX library instead of a Support Library. The flag is false by default if it is not specified.

android.enableJetifier: When this flag is set to true, the Android plugin automatically migrates existing third-party libraries to use AndroidX dependencies by rewriting their binaries. The flag is false by default if it is not specified.

Answer 3

I came across the same problem and My solution is as follows :

1. Go to gradle.properties files

2. Add these two lines :

   android.useAndroidX=true
   android.enableJetifier=true
   

3. Rebuild your project.

that's it.

Note: If your project already shows this android.useAndroidX=true then Just add android.enableJetifier=true and rebuild your project.