Error adding RoboGuice as dependency

Question

I'm trying to install RoboGuice as a dependency in my Android Studio project. As soon as I attempt to run the project (even before I've added any new code), I crash with this output:

Information:Gradle tasks [:app:assembleDebug] :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:checkDebugManifest :app:preReleaseBuild UP-TO-DATE :app:prepareComAndroidSupportAppcompatV72300Library UP-TO-DATE :app:prepareComAndroidSupportSupportV42300Library UP-TO-DATE :app:prepareComMcxiaokeVolleyLibraryAar100Library UP-TO-DATE :app:prepareDebugDependencies :app:compileDebugAidl UP-TO-DATE :app:compileDebugRenderscript UP-TO-DATE :app:generateDebugBuildConfig UP-TO-DATE :app:generateDebugAssets UP-TO-DATE :app:mergeDebugAssets UP-TO-DATE :app:generateDebugResValues UP-TO-DATE :app:generateDebugResources UP-TO-DATE :app:mergeDebugResources UP-TO-DATE :app:processDebugManifest UP-TO-DATE :app:processDebugResources UP-TO-DATE :app:generateDebugSources UP-TO-DATE :app:processDebugJavaRes UP-TO-DATE :app:compileDebugJava Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. :app:compileDebugNdk UP-TO-DATE :app:compileDebugSources :app:preDexDebug :app:dexDebug UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define Ljavax/inject/Provider; at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:596) at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:554) at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:535) at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171) at com.android.dx.merge.DexMerger.merge(DexMerger.java:189) at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:454) at com.android.dx.command.dexer.Main.runMonoDex(Main.java:303) at com.android.dx.command.dexer.Main.run(Main.java:246) at com.android.dx.command.dexer.Main.main(Main.java:215) at com.android.dx.command.Main.main(Main.java:106) Error:Execution failed for task ':app:dexDebug'.

com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.7.0_21.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2 Information:BUILD FAILED Information:Total time: 10.274 secs Information:1 error Information:0 warnings Information:See complete output in console

Here are my gradle files:

build.gradle (Module) apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.mysite.myapp"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.0.0'
    compile 'com.google.code.gson:gson:2.3.1'
    compile 'com.mcxiaoke.volley:library-aar:1.0.0'
    compile 'javax.inject:javax.inject:1'
    compile 'org.roboguice:roboguice:3.+'
}

build.gradle (project)

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.3'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        mavenCentral()
    }
}

I'm totally perplexed. Can anyone see what I am doing wrong? Thanks.

Answer 1

Roboguice will bring it's 'own' javax.inject as a dependency, so when you're declaring compile 'javax.inject:javax.inject:1' there's 2 of them resulting in

Multiple dex files define Ljavax/inject/Provider

Just remove the javax.inject dependency.