更新到 Gradle Build Tools 2.1.3 和 Gradle 2.14.1 后，我在我的 Android 项目中看到以下错误。它在我运行应用程序时立即发生。我该如何解决这个问题？

java.lang.NoClassDefFoundError: Failed resolution of: Lorg/jacoco/agent/rt/internal_14f7ee5/Offline;
at com.ourapp.next.conversation.SomeList.SomeListViewModel.$jacocoInit(SomeListViewModel.java)
at com.ourapp.next.conversation.SomeList.SomeListViewModel.(SomeListViewModel.java)
at com.ourapp.next.conversation.SomeList.SomeListAdapterTest.(SomeListAdapterTest.java:26)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217)
at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.jacoco.agent.rt.internal_14f7ee5.Offline" on path: DexPathList[[zip file "/system/framework/android.test.runner.jar", zip file "/data/app/com.ourapp.next.debug.test-1/base.apk", zip file "/data/app/com.ourapp.next.debug-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
... 30 more
Suppressed: java.lang.ClassNotFoundException: org.jacoco.agent.rt.internal_14f7ee5.Offline
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 31 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

最佳答案

提交错误报告:https://code.google.com/p/android/issues/detail?id=220640

这看起来是 jacoco 版本的问题。您需要将 jacocoversion 更新为 0.7.6.201602180812。

引用问题:

The jacoco plugin version was bumped from 0.7.4.201502262128 to 0.7.6.201602180812 between 2.1.2 to 2.1.3 which is the likely cause of this issue.

In 2.2 it is 0.7.5.201505241946.

另一种可能的错误似乎与 Google Play 服务有关。目前有临时解决方法。

选项 1:注释掉 testCoverageEnabled true。

buildTypes {
    debug {
        // testCoverageEnabled true
    }
}

选项 2:使用 Instant Run 似乎也可以解决这个问题。

关于android - java.lang.NoClassDefFoundError : Failed resolution of: Lorg/jacoco/agent/rt/internal_14f7ee5/Offline 错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39195754/