問題描述

com.android.dex.DexException:多個 dex 文件定義 Lorg/hamcrest/Description

在嘗試通過 Android Studio 或通過我的應用程序上的 Gradle 命令行進行調試構建/測試時發生.

occurring while trying to do a debug build/test either via Android Studio or via Gradle command-line on my application.

發布版本(沒有測試)工作正常，但是一旦包含測試(hamcrest 是一個測試庫)，構建就會失敗并出現上述錯誤.

The release build (without tests) works fine but as soon as testing is included (hamcrest being a testing library), the build fails with the above error.

我檢查了我的模塊依賴項，沒有 gradle -q dependencies 證實的重復要求.

I've checked my module dependencies and there's no duplicate requirements which gradle -q dependencies corroborates.

項目設置.gradle

include ':[library module]'
include ':[main module]'

<小時>

項目 build.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.9.+'
        classpath 'org.robolectric.gradle:gradle-android-test-plugin:0.9.+'
    }
}

allprojects {
    repositories {
        mavenCentral()
    }
}

<小時>

[庫模塊] build.gradle

apply plugin: 'android-library'

android {
    compileSdkVersion 19
    buildToolsVersion "19.0.0"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
    }

    packagingOptions {
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
    }
}

dependencies {
    compile 'com.google.zxing:core:3.0.+'
    compile 'com.bugsnag:bugsnag-android:2.1.1+'
}

<小時>

[主模塊] build.gradle

apply plugin: 'android'

android {
    signingConfigs {
    release {
        [...]
    }
}

    sourceSets {
        main {
            manifest.srcFile 'src/main/AndroidManifest.xml'
            res.srcDirs = ['src/main/res']
        }
        androidTest {
            setRoot('src/test')
        }
        instrumentTest {
        }
    }

    compileSdkVersion 19
    buildToolsVersion '19.0.0'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
        testPackageName "[main.packageName].tests"
    }

    buildTypes {
        release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }

    packagingOptions {
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
    }
}

apply plugin: 'android-test'



androidTest {
    // configure the set of classes for JUnit tests
    include '**/*Test.class'

    // configure max heap size of the test JVM
    maxHeapSize = "2048m"
}

repositories {
    maven { url 'https://repo.commonsware.com.s3.amazonaws.com' }
    maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
}

dependencies {
    androidTestCompile 'junit:junit:4.10'
    androidTestCompile 'org.robolectric:robolectric:2.3-SNAPSHOT'
    androidTestCompile 'com.squareup:fest-android:1.0.+'
    compile project(':[library module]')
    compile 'com.github.gabrielemariotti.changeloglib:library:1.4.+'
    compile 'com.google.code.gson:gson:2.2.4'
    compile 'com.google.android.gms:play-services:+'
    compile 'com.android.support:appcompat-v7:+'
    compile ('de.keyboardsurfer.android.widget:crouton:1.8.+') {
        exclude group: 'com.google.android', module: 'support-v4'
    }
    compile files('libs/CWAC-LoaderEx.jar')
    compile 'com.squareup.okhttp:okhttp:1.5.+'
    compile 'com.octo.android.robospice:robospice:1.4.11'
    compile 'com.octo.android.robospice:robospice-cache:1.4.11'
    compile 'com.octo.android.robospice:robospice-retrofit:1.4.11'
    compile 'com.commonsware.cwac:security:0.1.+'
    compile 'com.readystatesoftware.sqliteasset:sqliteassethelper:+'
}

推薦答案

Robolectric 2.3 依賴于 JUnit 4.8.1(版本顯式).您正在導入 JUnit 4.10(顯式版本).Hamcrest 可能只是 dex 令人窒息的眾多副本中的第一個 - 嘗試將您的 JUnit 要求版本更改為 4.8+(或從 Robolectric 依賴項中排除 JUnit).

Robolectric 2.3 depends on JUnit 4.8.1 (version explicit). You're importing JUnit 4.10 (version explicit). Hamcrest is probably simply the first of many duplicates that dex is choking on - try changing your JUnit requirement version to 4.8+ (or excluding JUnit from the Robolectric dependency).

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