当我在android studio中生成签名APK时，我得到了DexException

Question

在我对代码进行一些更改并尝试重新生成已签名的APK之前，所有内容都非常好。现在当我尝试在android studio中生成代码时，我得到以下异常：

Error:Execution failed for task ':app:transformClassesWithDexForRelease'.
> com.android.build.api.transform.TransformException: 
com.android.ide.common.process.ProcessException: 
java.util.concurrent.ExecutionException: com.android.dex.DexException: 
Multiple dex files define Lcom/commonsware/cwac/provider/StreamStrategy;

这个例外对我来说是个新鲜事。这是我的gradle文件和依赖项

apply plugin: 'com.android.application'

android {
compileSdkVersion 25
buildToolsVersion "25.0.2"

aaptOptions {
    noCompress 'pdf'
}
useLibrary 'org.apache.http.legacy'

defaultConfig {
    applicationId "com.user.plansmart"
    minSdkVersion 15
    targetSdkVersion 25
    versionCode 23
    versionName "1.2.6"
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile files('D:/AndroidStudioProjects/PlanSmart/libs/itextpdf-5.4.0.jar')
compile files('D:/AndroidStudioProjects/PlanSmart/libs/cwac-provider-
0.5.2.jar')
compile files('D:/AndroidStudioProjects/PlanSmart/libs/volley.jar')
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:design:25.3.1'
compile 'com.google.android.gms:play-services-ads:11.2.0'
compile 'com.readystatesoftware.sqliteasset:sqliteassethelper:+'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
compile 'com.commonsware.cwac:provider:0.5.2'
compile 'com.mcxiaoke.volley:library:1.0.1'
testCompile 'junit:junit:4.12'
}

可能是错误的原因。我无法弄明白。谁能帮我吗。

Answer 1

从build.gradle中的依赖项中删除行compile files('D:/AndroidStudioProjects/PlanSmart/libs/cwac-provider-0.5.2.jar')。

你已经将它定义为compile 'com.commonsware.cwac:provider:0.5.2'

Answer 2

在gradle文件中添加它

configurations {
compile.exclude group: 'com.commonsware' , module:'cwac'
}

Answer 3

将multiDexEnabled true添加到defaultConfig块内的gradle文件中：

defaultConfig {
    applicationId "com.user.plansmart"
    minSdkVersion 15
    targetSdkVersion 25
    versionCode 23
    versionName "1.2.6"
    multiDexEnabled true
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}

Answer 4

在gradle文件中添加此行。

defaultConfig {
   applicationId "com.user.plansmart"
   minSdkVersion 15
   targetSdkVersion 25
   versionCode 23
   versionName "1.2.6"

   multiDexEnabled true 
}

希望这会有所帮助。