IllegalAccessError與CountingIdlingResource

Question

該應用程序包含一個簡短顯示的啓動畫面，該活動正在使用測試測試，使用IdlingResource進行測試，以便測試知道閃屏何時關閉。問題是，SplashActivity投上運行的API 19設備測試過程中是什麼樣子的依賴相關的例外：

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

應用/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.<init>(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測試實驗室中的API級別19 Nexus 4物理設備發生異常。它不會在我們正在測試的任何其他平臺上發生，包括本地API 19模擬的Nexus S.

我明白意思是存在模糊/重複（傳遞）依賴性的異常，但在gradlew依賴關係中看不到任何其他平臺，只有Espresso Idling Resources v2.2.2。因爲CountingIdlingResource在Activity中被引用，所以依賴是「編譯」而不是「androidTestCompile」。

如何識別原因並解決？

UPDATE：異常也與API 19上發生Nexus 5和Nexus 7.下面是與所述空轉資源庫「./gradlew依賴性」的輸出的部分：

_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 

Answer 1

作爲我明白Google Samples依賴：

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

，當你實現自定義IdlingResource時才需要。即使在IdlingResourceSample自述有一句話：

考慮，我理解你的代碼，你要使用的意式咖啡的contrib包CountingIdlingResource使用從意式咖啡的contrib包

而且CountingIdlingResource類，所以請嘗試組織您的測試依賴關係，如其他Google sample所述。