关于java:UNEXPECTED TOP-LEVEL EXCEPTION:com.android.dex.DexException:多个dex文件定义

UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define

我在使用Android Studio在Android应用上尝试使用Google Play服务时遇到了麻烦。

我已经尝试了一切,仍然无法正常工作。

这是错误。

1
Execution failed for task ':app:dexDebug'.

com.android.ide.common.internal.LoggedErrorException: Failed to run command:
/Users/jghg/Desktop/My App/Android/SDK/android-sdk-mac_86/build-tools/19.0.1/dx --dex --output /Users/jghg/Desktop/My App/Eureka/UDA/app/build/libs/app-debug.dex /Users/jghg/Desktop/My App/Eureka/UDA/app/build/classes/debug /Users/jghg/Desktop/My App/Eureka/UDA/app/build/dependency-cache/debug /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/classes-08979151dd1373bd3f799299d93376d22d4afa46.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/classes-167b9d3c5d689abe004c3fa5b0bcb945d3f0fc8e.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/google-play-services-ec20f8af7bb457c5095cae1afa0cee722582f198.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/support-v4-13.0.0-473d85b8d55c88bfed3404072e6c132f96543429.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/support-v4-19.0.1-861cc05365a0e9262c764da37d61e3f93dc16de6.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/support-v4-19.0.1-dcc11377c764caea791f711123b8b678f876c3b6.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/twitter4j-async-3.0.5-0904cb320186fb23a9a9bf25a048c5bc4ec07bc2.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/twitter4j-core-3.0.5-41d2d5805e2d90cf77813a126306c4cbe22583ae.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/twitter4j-examples-3.0.5-adc1ee9b037c8061429560e6a5fe89ce8e502db6.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/twitter4j-media-support-3.0.5-37d138cdc631738d13ddb6f4d34c560a9cd8e048.jar /Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/twitter4j-stream-3.0.5-c96c138ea216b25631a1a8b47520ecaf33f288d8.jar
Error Code:
2
Output:
UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dex.DexException: Multiple dex files define Lcom/google/ads/AdRequest$ErrorCode;
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)

谢谢。
最好的祝福。


如果在build.gradle的依赖项中包含多个相同的库/目录,则会发生此错误。好的,假设你有一个看起来像这样的App结构:

enter image description here

所以你有主"应用程序",然后你有一堆子应用程序/模块/库。这些库是:1)gene_test_library,2)genes_nine_old_androids_library,& 3)swipe_list_view_library

我叫Gene,这就是为什么有这些"基因"库的原因。

build.gradle for "app"中,我有:

1
2
3
4
5
6
7
8
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:21.0.0'

    compile project(':libraries:gene_test_library')
    //compile project(':libraries:genes_nine_old_androids_library')
    compile project(':libraries:swipe_list_view_library')
}

build.gradlegene_test_library,我什么都没有:

1
2
dependencies {
}

build.gradlebuild.gradle,我有:

1
2
3
4
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.0'
}

build.gradlebuild.gradle,我有:

1
2
3
4
5
dependencies {
    compile 'com.nineoldandroids:library:2.4.0+'
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.0'
}

这行代码compile fileTree(dir: 'libs', include: ['*.jar'])只是意味着"嘿,请查看此模块中的'libs'文件夹中的任何jar文件。我在任何模块的libs文件夹中都没有任何内容,因此您可以忽略该行代码。

所以,让我说我取消注释//compile project(':libraries:genes_nine_old_androids_library')
build.gradle中用于"app"模块。然后我会得到"UNEXPECTED TOP-LEVEL EXCEPTION:"错误。这是为什么?

enter image description here

好吧,在build.gradle中为"app"编写//compile project(':libraries:genes_nine_old_androids_library'),与获取"genes_nine_old_androids_library"模块的构建依赖关系并将其放在那里相同。因此,取消注释//compile project(':libraries:genes_nine_old_androids_library')语句,"app"模块的build.gradle变为:

1
2
3
4
5
6
7
8
9
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:21.0.0'

    compile project(':libraries:gene_test_library')
    ***compile fileTree(dir: 'libs', include: ['*.jar'])***
    ***compile 'com.android.support:appcompat-v7:21.0.0'***
    compile project(':libraries:swipe_list_view_library')
}

注意现在compile 'com.android.support:appcompat-v7:21.0.0'如何显示2x。这就是错误的来源。


您的Google Play服务库正在从项目的其他依赖项中导出,并且在编译时dex编译器会混淆。

如果您正在使用Gradle,那么在项目的build.gradle中包含它应该排除将支持库导出到您的主项目中。

1
2
3
4
5
6
7
8
9
10
apply plugin: 'android'
apply plugin: 'crashlytics'

/** Must exclude exported support jars from dependencies, or get dex duplicate class      error.
*  we're
**/

configurations {
    all*.exclude group: 'com.android.support', module: 'support-v4'
    all*.exclude group: 'com.google.android.gms', module: 'play-services'
}

如果您正在使用andoid studio构建系统。然后你应该去File - > project structure并禁用 - > modules。浏览每个模块并单击依赖选项卡,取消选中支持库和Google Play服务库的导出列。

如果您需要更多帮助,请发表评论。


如果您在build.gradle中导入了相同库的不同版本,而在其中一个库中导入了不同版本,则也可能发生这种情况。例如,Google Play商店服务要求您让它们都引用我的相同版本:

app build.gradle

compile 'com.google.android.gms:play-services-base:7.5.0'

然而:

module / library build.gradle

compile 'com.google.android.gms:play-services-cast:7.8.+'

将我的应用程序版本升级到7.8.0解决了这个问题