错误：任务'：app：transformClassesWithPreDexForRelease'的执行失败。 > com.android.build.api.transform.TransformException

Question

我尝试使用Generate Signed APK构建APK。 但是我有一些错误。

Error:Uncaught translation error: java.lang.IllegalArgumentException: already added: Lorg/apache/xmlbeans/xml/stream/XMLName;
Error:Uncaught translation error: java.lang.IllegalArgumentException: already added: Lorg/apache/xmlbeans/xml/stream/XMLStreamException;
Error:Uncaught translation error: java.lang.IllegalArgumentException: already added: Lorg/apache/xmlbeans/xml/stream/utils/NestedThrowable;
Error:Uncaught translation error: java.lang.IllegalArgumentException: already added: Lorg/apache/xmlbeans/xml/stream/utils/NestedThrowable$Util;
Error:8 errors; aborting
Error:Execution failed for task ':app:transformClassesWithPreDexForRelease'.
> com.android.build.api.transform.TransformException: java.lang.RuntimeException: java.lang.RuntimeException: Unable to pre-dex 'C:\Users\AndroidStudioProjects\A\app\libs\xmlbeans-2.6.0.jar' to 'C:\Users\AndroidStudioProjects\A\app\build\intermediates\transforms\preDex\release\8'

这是我的Gradle文件。 而且我不知道这是什么问题。因为它运作良好。 只是我在制作APK时遇到问题。

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.android.A"
        multiDexEnabled true
        minSdkVersion 24
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            lintOptions{
                checkReleaseBuilds false
                abortOnError false
            }
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testImplementation 'junit:junit:4.12'

    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    implementation 'com.google.android.gms:play-services-ads:10.0.1'
    compile('org.apache.tika:tika-parsers:1.14'){
        exclude group: 'org.apache.xmlbeans'
    }
    compile 'com.google.firebase:firebase-core:10.0.1'
    compile 'com.google.firebase:firebase-messaging:10.0.1'
    compile files('libs/curvesapi-1.04.jar')
    compile files('libs/poi-3.17.jar')
    compile files('libs/poi-examples-3.17.jar')
    compile files('libs/poi-excelant-3.17.jar')
    compile files('libs/poi-ooxml-3.17.jar')
    compile files('libs/poi-scratchpad-3.17.jar')
    compile files('libs/xmlbeans-2.6.0.jar')
    compile files('libs/poi-ooxml-schemas-3.17.jar')
}

apply plugin: 'com.google.gms.google-services'

我该如何解决？ 请帮帮我。

Answer 1

在您的android studio中设置默认的嵌入式JDK，如下所示，然后使用干净的构建重试。

选择文件->项目结构->使用嵌入式JDK（推荐）

如果仍不能解决问题，请增加堆大小，然后重试

Answer 2

这可能是因为您两次将库包含在libs目录中。 首先搭配：

compile fileTree(include: ['*.jar'], dir: 'libs')

第二个：

compile files('libs/curvesapi-1.04.jar')
compile files('libs/poi-3.17.jar')
compile files('libs/poi-examples-3.17.jar')
compile files('libs/poi-excelant-3.17.jar')
compile files('libs/poi-ooxml-3.17.jar')
compile files('libs/poi-scratchpad-3.17.jar')
compile files('libs/xmlbeans-2.6.0.jar')
compile files('libs/poi-ooxml-schemas-3.17.jar')

您只需要使用以下行就可以在您的libs目录中包含所有jar：

compile fileTree(include: ['*.jar'], dir: 'libs')