title: Program type already present: android.support.v4.os.ResultReceiver$MyResultReceiver
body: <p>I'm refactoring an app to use androidx. I have struggled to get rid of all the libraries that do not support it. 
  I thought I had removed all the libraries that use the support libraries but it looks like there is still something that is importing it.
  I now get the error:</p>
  
  <blockquote>
    <p>AGPBI: {"kind":"error","text":"Program type already present:
    android.support.v4.os.ResultReceiver$MyResultReceiver","sources":[{}],"tool":"D8"}
    java.lang.RuntimeException: java.lang.RuntimeException:
    com.android.builder.dexing.DexArchiveMergerException: Error while
    merging dex archives:
    /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/532,
    /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/0.jar,
    /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/1.jar,</p>
    
    <p>...</p>
    
    <p>/Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/530.jar,
    /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/531.jar
    Learn how to resolve the issue at
    <a href="https://developer.android.com/studio/build/dependencies#duplicate_classes" rel="noreferrer">https://developer.android.com/studio/build/dependencies#duplicate_classes</a>.
    Program type already present:
    android.support.v4.os.ResultReceiver$MyResultReceiver     at
    sun.reflect.GeneratedConstructorAccessor377.newInstance(Unknown
    Source)   at
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
      at
    java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:593)
      at
    java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:677)
    ...   at
    org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
      at
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at
    org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
      at java.lang.Thread.run(Thread.java:745) Learn how to resolve the
    issue at
    <a href="https://developer.android.com/studio/build/dependencies#duplicate_classes" rel="noreferrer">https://developer.android.com/studio/build/dependencies#duplicate_classes</a>.
    Program type already present:
    android.support.v4.os.ResultReceiver$MyResultReceiver     at
    java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1431)
      at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
      at
    java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
      at
    java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
      at
    java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
    Learn how to resolve the issue at
    <a href="https://developer.android.com/studio/build/dependencies#duplicate_classes" rel="noreferrer">https://developer.android.com/studio/build/dependencies#duplicate_classes</a>.
    Program type already present:
    android.support.v4.os.ResultReceiver$MyResultReceiver     at
    com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow(D8DexArchiveMerger.java:129)
      at
    com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:114)
      at
    com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:101)
      at
    com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:36)
      at
    java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424)
      ... 4 more  at
    com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:71)
      at
    com.android.tools.r8.utils.ExceptionUtils.withD8CompilationHandler(ExceptionUtils.java:41)
      at com.android.tools.r8.D8.run(D8.java:89)  at
    com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:112)
      ... 7 more  at
    com.android.tools.r8.utils.Reporter.failIfPendingErrors(Reporter.java:83)
      at com.android.tools.r8.utils.Reporter.fatalError(Reporter.java:62)
      at
    com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:62)
      ... 10 more :app:transformDexArchiveWithDexMergerForDebug FAILED
    FAILURE: Build failed with an exception.
    * What went wrong: Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'.</p>
    
    <blockquote>
      <p>com.android.build.api.transform.TransformException: java.lang.RuntimeException: java.lang.RuntimeException:
      com.android.builder.dexing.DexArchiveMergerException: Error while
      merging dex archives:
      /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/532,
      /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/0.jar,
      /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/1.jar,</p>
    </blockquote>
    
    <p>...</p>
    
    <p>/Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/530.jar,
    /Users/name/myproject/app/build/intermediates/transforms/dexBuilder/debug/531.jar
    Learn how to resolve the issue at
    <a href="https://developer.android.com/studio/build/dependencies#duplicate_classes" rel="noreferrer">https://developer.android.com/studio/build/dependencies#duplicate_classes</a>.
    Program type already present:
    android.support.v4.os.ResultReceiver$MyResultReceiver</p>
  </blockquote>
  
  <p>Running <code>./gradlew androidDependencies</code> and I get:</p>
  
  <pre><code>debugCompileClasspath - Dependencies for compilation
  +--- io.realm:realm-android-library:5.1.0@aar
  +--- io.realm:realm-android-kotlin-extensions:5.1.0@aar
  +--- io.realm:realm-annotations:5.1.0@jar
  +--- javax.annotation:jsr250-api:1.0@jar
  +--- com.google.dagger:dagger-android:2.16@aar
  +--- androidx.preference:preference:1.0.0-alpha1@aar
  +--- com.google.android.material:material:1.0.0-alpha1@aar
  +--- androidx.appcompat:appcompat:1.0.0-alpha1@aar
  +--- androidx.cardview:cardview:1.0.0-alpha1@aar
  +--- androidx.recyclerview:recyclerview:1.0.0-alpha1@aar
  +--- androidx.gridlayout:gridlayout:1.0.0-alpha1@aar
  +--- androidx.legacy:legacy-support-v4:1.0.0-alpha1@aar
  +--- androidx.vectordrawable:vectordrawable-animated:1.0.0-alpha1@aar
  +--- androidx.vectordrawable:vectordrawable:1.0.0-alpha1@aar
  +--- androidx.palette:palette:1.0.0-alpha1@aar
  +--- com.firebaseui:firebase-ui-auth:3.1.0@aar
  +--- com.google.firebase:firebase-auth:15.0.0@aar
  +--- com.google.firebase:firebase-config:15.0.2@aar
  +--- com.google.firebase:firebase-database:15.0.1@aar
  +--- com.jakewharton.rxbinding2:rxbinding:2.0.0@aar
  +--- com.jakewharton.rxrelay2:rxrelay:2.0.0@jar
  +--- joda-time:joda-time:2.5@jar
  +--- com.jakewharton.timber:timber:4.3.1@aar
  +--- com.uncopt:android.justified:1.0@jar
  +--- androidx.lifecycle:lifecycle-common-java8:2.0.0-alpha1@jar
  +--- androidx.lifecycle:lifecycle-extensions:2.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-reactivestreams:2.0.0-alpha1@aar
  +--- com.squareup.retrofit2:adapter-rxjava2:2.2.0@jar
  +--- com.squareup.retrofit2:converter-moshi:2.2.0@jar
  +--- com.squareup.retrofit2:converter-scalars:2.2.0@jar
  +--- com.squareup.retrofit2:retrofit:2.2.0@jar
  +--- com.squareup.okhttp3:okhttp-urlconnection:3.4.1@jar
  +--- com.squareup.okhttp3:logging-interceptor:3.4.1@jar
  +--- com.github.franmontiel:PersistentCookieJar:v1.0.1@aar
  +--- com.squareup.okhttp3:okhttp:3.6.0@jar
  +--- com.squareup.moshi:moshi-kotlin:1.5.0@jar
  +--- com.github.MFlisar:RxBus2:0.1@aar
  +--- com.jakewharton:butterknife:8.8.1@aar
  +--- com.squareup.leakcanary:leakcanary-android:1.5.1@aar
  +--- com.crashlytics.sdk.android:crashlytics:2.6.8@aar
  +--- com.f2prateek.rx.preferences2:rx-preferences:2.0.0-RC2@aar
  +--- org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.2.41@jar
  +--- org.jetbrains.kotlin:kotlin-android-extensions-runtime:1.2.41@jar
  +--- com.google.code.findbugs:jsr305:1.3.9@jar
  +--- com.getkeepsafe.relinker:relinker:1.2.2@aar
  +--- com.google.dagger:dagger:2.16@jar
  +--- com.android.support:customtabs:26.1.0@aar
  +--- com.android.support:cardview-v7:26.1.0@aar
  +--- com.jakewharton:butterknife-annotations:8.8.1@jar
  +--- com.android.support:design:26.1.0@aar
  +--- com.android.support:appcompat-v7:26.1.0@aar
  +--- com.android.support:recyclerview-v7:26.1.0@aar
  +--- com.android.support:transition:26.1.0@aar
  +--- com.google.firebase:firebase-abt:15.0.1@aar
  +--- com.google.firebase:firebase-database-connection:15.0.1@aar
  +--- com.google.firebase:firebase-analytics:15.0.2@aar
  +--- com.google.firebase:firebase-analytics-impl:15.0.2@aar
  +--- com.google.firebase:firebase-iid:15.1.0@aar
  +--- com.google.firebase:firebase-common:15.0.1@aar
  +--- com.google.android.gms:play-services-phenotype:15.0.1@aar
  +--- com.google.firebase:firebase-database-collection:15.0.1@aar
  +--- com.google.android.gms:play-services-auth:11.4.2@aar
  +--- com.google.android.gms:play-services-ads-identifier:15.0.1@aar
  +--- com.google.android.gms:play-services-stats:15.0.1@aar
  +--- com.google.firebase:firebase-iid-interop:15.0.0@aar
  +--- com.google.android.gms:play-services-auth-api-phone:11.4.2@aar
  +--- com.google.android.gms:play-services-auth-base:11.4.2@aar
  +--- com.google.android.gms:play-services-flags:15.0.1@aar
  +--- com.google.android.gms:play-services-base:15.0.1@aar
  +--- com.google.android.gms:play-services-tasks:15.0.1@aar
  +--- com.google.android.gms:play-services-basement:15.0.1@aar
  +--- com.android.support:support-v4:26.1.0@aar
  +--- com.android.support:support-media-compat:26.1.0@aar
  +--- com.android.support:support-fragment:26.1.0@aar
  +--- com.android.support:support-core-utils:26.1.0@aar
  +--- com.android.support:animated-vector-drawable:26.1.0@aar
  +--- com.android.support:support-core-ui:26.1.0@aar
  +--- com.android.support:support-vector-drawable:26.1.0@aar
  +--- com.android.support:support-compat:26.1.0@aar
  +--- com.android.support:support-annotations:26.1.0@jar
  +--- javax.inject:javax.inject:1@jar
  +--- androidx.fragment:fragment:1.0.0-alpha1@aar
  +--- androidx.legacy:legacy-support-core-ui:1.0.0-alpha1@aar
  +--- androidx.legacy:legacy-support-core-utils:1.0.0-alpha1@aar
  +--- androidx.media:media:1.0.0-alpha1@aar
  +--- androidx.transition:transition:1.0.0-alpha1@aar
  +--- androidx.loader:loader:1.0.0-alpha1@aar
  +--- androidx.viewpager:viewpager:1.0.0-alpha1@aar
  +--- androidx.coordinatorlayout:coordinatorlayout:1.0.0-alpha1@aar
  +--- androidx.drawerlayout:drawerlayout:1.0.0-alpha1@aar
  +--- androidx.slidingpanelayout:slidingpanelayout:1.0.0-alpha1@aar
  +--- androidx.customview:customview:1.0.0-alpha1@aar
  +--- androidx.swiperefreshlayout:swiperefreshlayout:1.0.0-alpha1@aar
  +--- androidx.asynclayoutinflater:asynclayoutinflater:1.0.0-alpha1@aar
  +--- androidx.core:core:1.0.0-alpha1@aar
  +--- androidx.collection:collection:1.0.0-alpha1@jar
  +--- androidx.cursoradapter:cursoradapter:1.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-process:2.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-service:2.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-runtime:2.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-livedata:2.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-livedata-core:2.0.0-alpha1@aar
  +--- androidx.lifecycle:lifecycle-common:2.0.0-alpha1@jar
  +--- androidx.arch.core:core-runtime:2.0.0-alpha1@aar
  +--- androidx.arch.core:core-common:2.0.0-alpha1@jar
  +--- androidx.lifecycle:lifecycle-viewmodel:2.0.0-alpha1@aar
  +--- androidx.documentfile:documentfile:1.0.0-alpha1@aar
  +--- androidx.localbroadcastmanager:localbroadcastmanager:1.0.0-alpha1@aar
  +--- androidx.print:print:1.0.0-alpha1@aar
  +--- androidx.interpolator:interpolator:1.0.0-alpha1@aar
  +--- androidx.annotation:annotation:1.0.0-alpha1@jar
  +--- com.android.support.constraint:constraint-layout:1.1.0-beta1@aar
  +--- com.github.akarnokd:rxjava2-extensions:0.15.2@jar
  +--- io.reactivex.rxjava2:rxandroid:2.0.1@aar
  +--- io.reactivex.rxjava2:rxjava:2.0.6@jar
  +--- org.reactivestreams:reactive-streams:1.0.0@jar
  +--- com.squareup.moshi:moshi:1.5.0@jar
  +--- org.jetbrains.kotlin:kotlin-reflect:1.1.1@jar
  +--- org.jetbrains.kotlin:kotlin-stdlib:1.2.41@jar
  +--- com.squareup.leakcanary:leakcanary-analyzer:1.5.1@jar
  +--- com.crashlytics.sdk.android:beta:1.2.5@aar
  +--- com.crashlytics.sdk.android:crashlytics-core:2.3.17@aar
  +--- com.crashlytics.sdk.android:answers:1.3.13@aar
  +--- io.fabric.sdk.android:fabric:1.3.17@aar
  +--- com.google.android.gms:play-services-measurement-base:15.0.2@aar
  +--- com.android.support.constraint:constraint-layout-solver:1.1.0-beta1@jar
  +--- com.google.android.gms:play-services-auth-license:11.4.2@aar
  +--- com.squareup.haha:haha:2.0.3@jar
  +--- com.squareup.leakcanary:leakcanary-watcher:1.5.1@jar
  +--- com.google.android.gms:play-services-auth-api-phone-license:11.4.2@aar
  +--- com.google.android.gms:play-services-auth-base-license:11.4.2@aar
  +--- com.squareup.okio:okio:1.13.0@jar
  +--- org.jetbrains:annotations:13.0@jar
  +--- android.arch.lifecycle:runtime:1.0.0@aar
  +--- android.arch.lifecycle:common:1.0.0@jar
  \--- android.arch.core:common:1.0.0@jar
  </code></pre>
  
  <p>The question is: is there a way for me to know which dependency is importing the support library apart from checking the <code>build.gradle</code>:</p>
  
  <pre><code>  buildscript {
        repositories {
            maven { url 'https://maven.fabric.io/public' }
            mavenCentral()
            google()
        }
        dependencies {
            classpath 'io.fabric.tools:gradle:1.25.4'
        }
    }
  
    repositories {
        mavenCentral()
        maven { url 'https://maven.fabric.io/public' }
        maven { url 'https://maven.google.com' }
    }
  
    apply plugin: 'com.android.application'
    apply plugin: 'kotlin-android'
    apply plugin: 'kotlin-android-extensions'
    apply plugin: 'kotlin-kapt'
    apply plugin: 'io.fabric'
    apply plugin: 'realm-android'
  
    android {
        def versionMajor = 0
        def versionMinor = 1
        def versionPatch = 0
  
        compileSdkVersion 'android-P'
        compileOptions {
            targetCompatibility JavaVersion.VERSION_1_8
            sourceCompatibility JavaVersion.VERSION_1_8
            defaultConfig {
                applicationId "org.appid"
                versionName "${versionMajor}.${versionMinor}.${versionPatch}"
                versionCode versionMajor * 10000
                + versionMinor * 100
                + versionPatch
  
                minSdkVersion 19
                targetSdkVersion 27
  
                dexOptions {
                    preDexLibraries = false
                    javaMaxHeapSize "4g"
                }
            }
        }
  
        buildTypes {
            release {
                debuggable false
                minifyEnabled true
                zipAlignEnabled true
                renderscriptDebuggable false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
                signingConfig signingConfigs.release
                javaCompileOptions.annotationProcessorOptions.arguments['butterknife.debuggable'] = 'false'
                resValue "string", "app_version", "${defaultConfig.versionName}"
            }
            debug {
                versionNameSuffix "_dev"
                resValue "string", "app_version", "${defaultConfig.versionName}${versionNameSuffix}"
                debuggable true
                signingConfig signingConfigs.debug
                minifyEnabled false
            }
        }
    }
  
    def jsr250_api = '1.0'
    def androidxVersion = '1.0.0-alpha1'
    def lifecycle_runtime = '2.0.0-alpha1'
    def daggerVer = '2.16'
    def rxbinding = '2.0.0'
    def rxbus2 = '0.1'
    def retrofit2 = '2.2.0'
    def okhttp3 = '3.4.1'
    def firebase = '15.0.0'
    def firebase_database = '15.0.1'
    def firebaseConfig = '15.0.2'
    def firebase_ui_auth = '3.1.0'
    def butter_knife = '8.8.1'
    def leak_canary = '1.5.1'
    def persistent_cookie_jar = 'v1.0.1'
    def joda_time = '2.5'
    def timber = '4.3.1'
    def justified_text_view = '1.0'
    def crashlytics = '2.6.8@aar'
    def hamcrestVersion = '1.3'
    def espresso_core = '3.1.0-alpha1'
    def mockitoKotlinVersion       = '1.5.0'
    def mockitoKotlinInlineVersion = '2.13.0' // to allow testing final classes
    def junit = '4.12'
  
    dependencies {
        kapt "com.google.dagger:dagger-android-processor:$daggerVer"
        implementation "com.google.dagger:dagger-android:$daggerVer"
        kapt "com.google.dagger:dagger-compiler:$daggerVer"
  
        implementation "androidx.appcompat:appcompat:$androidxVersion"
        implementation "androidx.cardview:cardview:$androidxVersion"
        implementation "androidx.recyclerview:recyclerview:$androidxVersion"
        implementation "androidx.gridlayout:gridlayout:$androidxVersion"
        implementation "androidx.preference:preference:$androidxVersion"
        implementation "androidx.vectordrawable:vectordrawable:$androidxVersion"
        implementation "androidx.palette:palette:$androidxVersion"
        implementation "com.google.android.material:material:$androidxVersion"
  
        implementation "com.google.firebase:firebase-auth:$firebase"
        implementation "com.google.firebase:firebase-config:$firebaseConfig"
        implementation "com.google.firebase:firebase-database:$firebase_database"
        implementation "com.firebaseui:firebase-ui-auth:$firebase_ui_auth"
        implementation "com.jakewharton.rxbinding2:rxbinding:$rxbinding"
        implementation "com.jakewharton.rxrelay2:rxrelay:$rxbinding"
  
        implementation "joda-time:joda-time:$joda_time"
        implementation "com.jakewharton.timber:timber:$timber"
        implementation "com.uncopt:android.justified:$justified_text_view"
  
        implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_runtime"
        kapt "androidx.lifecycle:lifecycle-compiler:$lifecycle_runtime"
        implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_runtime"
        testImplementation "androidx.arch.core:core-testing:$lifecycle_runtime"
  
        //To use LiveData with ReactiveStreams API
        implementation "androidx.lifecycle:lifecycle-reactivestreams:$lifecycle_runtime"
        implementation "com.squareup.retrofit2:retrofit:$retrofit2"
        implementation "com.squareup.retrofit2:adapter-rxjava2:$retrofit2"
        implementation "com.squareup.retrofit2:converter-moshi:$retrofit2"
        implementation "com.squareup.retrofit2:converter-scalars:$retrofit2"
        implementation "com.squareup.okhttp3:okhttp:$okhttp3"
        implementation "com.squareup.okhttp3:okhttp-urlconnection:$okhttp3"
        implementation "com.squareup.okhttp3:logging-interceptor:$okhttp3"
        implementation "com.github.franmontiel:PersistentCookieJar:$persistent_cookie_jar"
        implementation 'com.squareup.moshi:moshi-kotlin:1.5.0'
        implementation "com.github.MFlisar:RxBus2:$rxbus2"
        kapt "com.jakewharton:butterknife-compiler:$butter_knife"
        implementation "com.jakewharton:butterknife:$butter_knife"
        implementation "com.squareup.leakcanary:leakcanary-android:$leak_canary"
        releaseImplementation "com.squareup.leakcanary:leakcanary-android-no-op:$leak_canary"
        testImplementation "com.squareup.leakcanary:leakcanary-android-no-op:$leak_canary"
        compileOnly "javax.annotation:jsr250-api:$jsr250_api"
        implementation("com.crashlytics.sdk.android:crashlytics:$crashlytics") {
            transitive = true
        }
        implementation 'com.f2prateek.rx.preferences2:rx-preferences:2.0.0-RC2'
        implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
        testImplementation "junit:junit:$junit"
        testImplementation "com.nhaarman:mockito-kotlin:$mockitoKotlinVersion"
        testImplementation "org.mockito:mockito-inline:$mockitoKotlinInlineVersion"
        testImplementation "org.hamcrest:hamcrest-core:$hamcrestVersion"
        testImplementation "org.hamcrest:hamcrest-library:$hamcrestVersion"
        testImplementation "org.hamcrest:hamcrest-integration:$hamcrestVersion"
        androidTestImplementation("androidx.test.espresso:espresso-core:$espresso_core", {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
    }
  
    androidExtensions {
        experimental = true
    }
  
    apply plugin: 'com.google.gms.google-services'
  
    android.packagingOptions {
        exclude 'LICENSE.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/rxjava.properties'
    }
  
    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
    }
  </code></pre>