AndroidStudio3.1中任务':app:transformClassesWithAndroidGradleClassShrinkerForDebug‘的执行失败

Question

我刚刚从Android 3.1升级到了Android 3.1.1 (但仍然使用Gradle构建工具3.0.0)。当我运行我的应用程序时，它会导致以下错误：

:app:transformClassesWithAndroidGradleClassShrinkerForDebug
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/Interceptor
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/Interceptor
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/Request
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: okio/Okio
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/ResponseBody
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okio/Okio
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/Request
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/Response
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/Headers
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/ResponseBody
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/Interceptor$Chain
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/Response$Builder
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/Response
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/Headers
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/RequestBody
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/OkHttpClient$Builder
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/HttpUrl
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: com/squareup/okhttp/OkHttpClient
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: okio/BufferedSource
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/Interceptor$Chain
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/Response$Builder
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okhttp3/RequestBody
com/android/tools/profiler/agent/okhttp/OkHttp2Interceptor references unknown class: okio/BufferedSink
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okio/BufferedSource
com/android/tools/profiler/agent/okhttp/OkHttp3Interceptor references unknown class: okio/BufferedSink
:app:transformClassesWithAndroidGradleClassShrinkerForDebug FAILED
:app:buildInfoGeneratorDebug

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformClassesWithAndroidGradleClassShrinkerForDebug'.
> Warnings found during shrinking, please use -dontwarn or -ignorewarnings to suppress them.

但我不使用okhttp或任何Http库(比如Retrofit，..)在我的项目里。

当我将Gradle构建工具升级到最新版本的3.1.1时，也会发生此错误。我不知道为什么，当我降级回Android 3.1.0时，一切都很好。

app/build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.z.a.zcamera"
        minSdkVersion 14
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation project(path: ':libzcamera')
    implementation 'com.android.support:support-v4:26.1.0'
}

更新：

我认为这是由Android工具的新特性引起的：，网络分析器，，因为com/android/tools/profiler/agent路径，我打开高级分析工具来跟踪网络负载。

我也不想让护卫也失效。

有什么想法吗？请帮帮我。

Answer 1

这似乎是AndroidStudio3.1.1的一个bug。这是Android注入的一些ProGuard处理不好的额外代码。构建APK或手动执行gradle命令不受影响。

选项1: (首选)禁用高级剖面。

选项2:禁用Debug生成的收缩

选项3:在从Android部署应用程序时包括okhttp库。可能只适用于调试风格(如果测量某物，ProGuard将删除任何未使用的方法，将不会造成很大的开销)

如果上面的解决方案/快速修复不起作用，请确保您没有使用okhttp。也许你是-而且是配置不当。您可以使用gradle app:dependencies检查您的项目或任何链接库中是否引用了okhttp。

Answer 2

如果您使用的是3.1.1

  classpath 'com.android.tools.build:gradle:3.1.1'

那么您的app/build.gradle应该如下所示

apply plugin: 'com.android.application' 
android {
compileSdkVersion 27
defaultConfig {
    applicationId "com.z.a.zcamera"
    minSdkVersion 14
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
}
buildTypes {
    release {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
    debug {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation project(path: ':libzcamera')
implementation 'com.android.support:support-v4:27.1.0'
}

如果buildToolsVersion需要，那么使用以下命令

buildToolsVersion '27.0.3'

还可以在项目中更改gradle (路径：':libzcamera')