I'm encountering an error in my Flutter project while trying to build the app. The error seems to be related to duplicate classes in the Mapbox SDK. I am using mapbox_maps_flutter and flutter_mapbox_navigation both.

[muhammadnaqeeb]

Error

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugDuplicateClasses'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
   > Duplicate class com.mapbox.common.module.okhttp.CallbackWrapper found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.CallbackWrapper$RequestCallback found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.HttpCallback found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.IdGenerator found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.LazyClient found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.MapboxOkHttpService found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.MapboxOkHttpService$1 found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.MapboxOkHttpService$HttpServiceGetLifecycleStateCallback found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.MapboxOkHttpService$HttpServiceLifecycleObserver found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.MapboxOkHttpService$HttpServiceOfflineSwitchObserver found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.MapboxOkHttpService$QueuedRequest found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.NetworkUsageListener found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)
     Duplicate class com.mapbox.common.module.okhttp.NetworkUsageListener$NetworkUsageMetricCallback found in modules jetified-common-24.5.0-runtime (com.mapbox.common:common:24.5.0) and jetified-okhttp-23.8.0-runtime (com.mapbox.common:okhttp:23.8.0)

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

build.gragle:android

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

rootProject.buildDir = "../build"
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(":app")
}

tasks.register("clean", Delete) {
    delete rootProject.buildDir
}

build.gragle:app

plugins {
    id "com.android.application"
    // START: FlutterFire Configuration
    id 'com.google.gms.google-services'
    // END: FlutterFire Configuration
    id "kotlin-android"
    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
    id "dev.flutter.flutter-gradle-plugin"
}

def localProperties = new Properties()
def localPropertiesFile = rootProject.file("local.properties")
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader("UTF-8") { reader ->
        localProperties.load(reader)
    }
}

def flutterVersionCode = localProperties.getProperty("flutter.versionCode")
if (flutterVersionCode == null) {
    flutterVersionCode = "1"
}

def flutterVersionName = localProperties.getProperty("flutter.versionName")
if (flutterVersionName == null) {
    flutterVersionName = "1.0"
}

android {
    namespace = "com.example.nursing_application"
    compileSdk = 34
    ndkVersion = flutter.ndkVersion

    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId = "com.example.nursing_application"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
        minSdk = 21
        targetSdk = flutter.targetSdkVersion
        versionCode = flutterVersionCode.toInteger()
        versionName = flutterVersionName
        multiDexEnabled true
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig = signingConfigs.debug
        }
    }
}

flutter {
    source = "../.."
}

dependencies {
    implementation platform("org.jetbrains.kotlin:kotlin-bom:1.8.0")

}

pubspec.yaml

name: nursing_application
description: "A new Flutter project."

publish_to: 'none' # Remove this line if you wish to publish to pub.dev

version: 1.0.0+1

environment:
  sdk: '>=3.4.3 <4.0.0'

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^1.0.6
  get: ^4.6.6
  firebase_core: ^2.24.2
  firebase_auth: ^4.16.0
  cloud_firestore: ^4.14.0
  firebase_storage: ^11.7.7
  location: ^7.0.0
  location_picker_flutter_map: ^3.0.1
  mapbox_maps_flutter: ^2.1.0
  permission_handler: ^11.3.1
  http: ^1.2.2
  flutter_mapbox_navigation: ^0.2.2

dev_dependencies:
  flutter_test:
    sdk: flutter

  flutter_lints: ^3.0.0

[Arshad-ullah]

Yes, I also faced this issue. Just downgrade the mapbox version.

flutter_mapbox_navigation: ^0.2.2 mapbox_maps_flutter: ^0.6.0

[muhammadnaqeeb]

@Arshad-ullah, thank you so much for your help. I've been struggling for the past few days. Thanks!

[SalmanNaghori]

@Arshad-ullah The duplication error is resolved, but it now shows a lifecycle error when running.