CountingIdlingResource的IllegalAccessError

该应用程序包含一个简短显示的启动画面,并且使用IdlingResource通过检测测试对该活动进行测试,以便测试知道启动屏幕何时关闭.问题是SplashActivity在运行API 19的设备上测试期间会抛出与依赖项相关的异常:

import android.support.test.espresso.idling.CountingIdlingResource;
...
private CountingIdlingResource espressoTestIdlingResource =
new CountingIdlingResource("Splash_Delay"); // <-- Exception here line 22
...

应用程序/的build.gradle:

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
        exclude group: 'com.google.code.findbugs'
        exclude module: 'espresso-idling-resource'
        exclude group: "javax.inject"
    })
    compile 'com.android.support.test.espresso:espresso-idling-resource:2.2.2'

    compile 'com.google.dagger:dagger:2.10'
    annotationProcessor 'com.google.dagger:dagger-compiler:2.10'
    compile 'com.google.dagger:dagger-android:2.10'
    compile 'com.google.dagger:dagger-android-support:2.10'
    annotationProcessor 'com.google.dagger:dagger-android-processor:2.10'

    compile "com.android.support:appcompat-v7:$supportLibraryVersion"
    compile "com.android.support:design:$supportLibraryVersion"
    compile "com.android.support.constraint:constraint-layout:1.0.2"

    compile "com.jakewharton.timber:timber:4.5.1"
    compile "com.squareup.phrase:phrase:1.1.0"
    compile "com.squareup.retrofit2:retrofit:2.2.0"
    compile "com.squareup.retrofit2:converter-gson:2.2.0"
    compile "com.squareup.okhttp3:logging-interceptor:3.7.0"
    compile 'net.danlew:android.joda:2.9.9'

    testCompile 'junit:junit:4.12'
    compile 'com.google.firebase:firebase-crash:10.2.4'
    androidTestCompile 'junit:junit:4.12'
}

例外:

java.lang.IllegalAccessError
java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation
    at com.myapp.android.ui.splash.SplashActivity.(SplashActivity.java:22)
    at java.lang.Class.newInstanceImpl(Native Method)
    at java.lang.Class.newInstance(Class.java:1208)
    at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2101)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
    at android.app.ActivityThread.accessX800(ActivityThread.java:135)
    at android.app.ActivityThreadXH.handleMessage(ActivityThread.java:1196)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:136)
    at android.app.ActivityThread.main(ActivityThread.java:5001)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:515)
    at com.android.internal.os.ZygoteInitXMethodAndArgsCaller.run(ZygoteInit.java:785)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    at dalvik.system.NativeStart.main(Native Method)

Firebase测试实验室中的API级别19 Nexus 4物理设备发生异常.它不会出现在我们正在测试的任何其他平台上,包括本地API 19模拟的Nexus S.

我理解异常意味着存在模糊/重复(传递)依赖关系,但我看不到任何gradlew依赖关系,只有Espresso Idling Resources v2.2.2.依赖性是"编译"而不是"androidTestCompile",因为在Activity中引用了CountingIdlingResource.

我如何确定原因并解决？

更新:Nexus 5和Nexus 7上的API 19也会出现异常.以下是与空闲资源库相关的"./gradlew依赖项"输出的部分:

_debugApk - ## Internal use, do not manually configure ##
+--- com.android.support.test.espresso:espresso-idling-resource:2.2.2
+--- com.google.dagger:dagger:2.10
...
_debugCompile - ## Internal use, do not manually configure ##
+--- com.android.support.test.espresso:espresso-idling-resource:2.2.2
+--- com.google.dagger:dagger:2.10
...
_releaseApk - ## Internal use, do not manually configure ##
+--- com.android.support.test.espresso:espresso-idling-resource:2.2.2
+--- com.google.dagger:dagger:2.10
...
_releaseCompile - ## Internal use, do not manually configure ##
+--- com.android.support.test.espresso:espresso-idling-resource:2.2.2
+--- com.google.dagger:dagger:2.10
...
compile - Classpath for compiling the main sources.
+--- com.android.support.test.espresso:espresso-idling-resource:2.2.2
+--- com.google.dagger:dagger:2.10

R. Zagórski.. 6

据我了解Google Samples的依赖关系:

com.android.support.test.espresso:espresso-idling-resource:2.2.2

仅在实现自定义时才需要IdlingResource.即使在IdlingResourceSampleREADME中也有一句话:

考虑使用espresso-contrib包中的CountingIdlingResource类

正如我理解您尝试使用CountingIdlingResourceespresso-contrib软件包的代码一样,因此请尝试按照其他Google示例中的说明来组织您的测试依赖项.

据我了解Google Samples的依赖关系:

com.android.support.test.espresso:espresso-idling-resource:2.2.2

仅在实现自定义时才需要IdlingResource.即使在IdlingResourceSampleREADME中也有一句话:

考虑使用espresso-contrib包中的CountingIdlingResource类

正如我理解您尝试使用CountingIdlingResourceespresso-contrib软件包的代码一样,因此请尝试按照其他Google示例中的说明来组织您的测试依赖项.