java - 由于多个 dex 文件，Android Gradle 构建失败

Question

我的 Android Gradle 项目有很多外部依赖项。在某个时候，我决定提取一些功能来分离库以及一些依赖项，我使用 maven-assembly-plugin 打包了这些依赖项。 。然后我将新创建的库作为依赖项包括在内 + 删除一些已经 bundle 在我的库中的依赖项。

问题是，在构建时我遇到了这个我不明白的错误:

UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dex.DexException: Multiple dex files define Lcom/squareup/okhttp/Address;
    at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594)
    at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552)
    at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533)
    at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170)
    at com.android.dx.merge.DexMerger.merge(DexMerger.java:188)
    at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439)
    at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287)
    at com.android.dx.command.dexer.Main.run(Main.java:230)
    at com.android.dx.command.dexer.Main.main(Main.java:199)
    at com.android.dx.command.Main.main(Main.java:103)

这是以前直接包含的依赖项 (okhttp) 之一，现在与我的新库一起打包。我创建的库可以找到here .

这是我的构建文件:

Android 应用构建配置:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.7.+'
    }
}
apply plugin: 'android'

repositories {
    mavenCentral()
    mavenRepo urls: "https://github.com/mkorszun/okrest/raw/master/repo"
}

android {
    compileSdkVersion 15
    buildToolsVersion "19.0.2"

    defaultConfig {
        minSdkVersion 8
        targetSdkVersion 15
    }

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

}

dependencies {
    compile 'com.android.support:appcompat-v7:19.0.1'
//    compile 'org.codehaus.jackson:jackson-mapper-asl:1.9.11'
//    compile 'com.sun.jersey:jersey-client:1.8'
//    compile 'com.sun.jersey:jersey-core:1.8'
//    compile 'com.squareup.okhttp:okhttp:1.2.1'
//    compile 'com.google.guava:guava:15.0'
    compile 'com.google.android.gms:play-services:4.0.30'
    compile files('libs/GraphView-3.0.jar')
    compile 'com.okrest:okrest:0.0.3'
}

库构建配置:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.okrest</groupId>
    <artifactId>okrest</artifactId>
    <version>0.0.3</version>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <distributionManagement>
        <repository>
            <id>local.repo</id>
            <name>Internal Repository</name>
            <url>file://repo</url>
        </repository>
    </distributionManagement>

    <dependencies>

        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>

        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-client</artifactId>
            <version>1.18.1</version>
        </dependency>

        <dependency>
            <groupId>com.squareup.okhttp</groupId>
            <artifactId>okhttp</artifactId>
            <version>1.5.0</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.github.rest-driver</groupId>
            <artifactId>rest-client-driver</artifactId>
            <version>1.1.37</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1.1</version>
            <scope>test</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>

            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <appendAssemblyId>false</appendAssemblyId>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>cobertura-maven-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <format>xml</format>
                    <maxmem>256m</maxmem>
                    <aggregate>true</aggregate>
                    <check/>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.eluder.coveralls</groupId>
                <artifactId>coveralls-maven-plugin</artifactId>
                <version>2.1.0</version>
            </plugin>

        </plugins>
    </build>

    <reporting>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>cobertura-maven-plugin</artifactId>
                <version>2.6</version>
            </plugin>
        </plugins>
    </reporting>

</project>

这是我的 android 应用程序的依赖关系树:

+--- com.android.support:appcompat-v7:19.0.1
|    \--- com.android.support:support-v4:19.0.1
+--- com.google.android.gms:play-services:4.0.30
|    \--- com.android.support:support-v4:13.0.0 -> 19.0.1
\--- com.okrest:okrest:0.0.3
     +--- org.codehaus.jackson:jackson-mapper-asl:1.9.13
     |    \--- org.codehaus.jackson:jackson-core-asl:1.9.13
     +--- com.sun.jersey:jersey-client:1.18.1
     \--- com.squareup.okhttp:okhttp:1.5.0

Answer 1

这意味着该类被两次包含在 APK 中，这是不允许的。一定是您有两个到该库的依赖路径。检查它们并删除多余的。如果您找不到它，请将您的构建文件附加到您的问题。