스레드 "main"java.lang.NoClassDefFoundError의 예외 : junit / textui / ResultPrinter

스레드 "main"java.lang.NoClassDefFoundError의 예외 : junit / textui / ResultPrinter

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Android Studio 0.3.0에서 Android 프로젝트를 컴파일하려고합니다. 오늘 다음 오류가 발생합니다.

Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/ResultPrinter
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:188)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:113)
Caused by: java.lang.ClassNotFoundException: junit.textui.ResultPrinter
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
... 3 more

Process finished with exit code 1

웹 검색을하면이 문제가 JUnit과 관련이 있다고 믿게됩니다. 그러나 내 프로젝트에서 JUnit을 사용하고 있지 않습니다. 실수로 일부 옵션을 설정했을 수 있습니까? 이 경우 프로젝트에서 단위 테스트를 비활성화하려면 어떻게해야합니까? 어떤 아이디어?

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드디어 찾았습니다. 실행 / 디버그 구성 대화 상자에 있습니다. JUnit을 비활성화하고 다시 컴파일합니다.

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일반적으로이 문제는 잘못된 테스트 유형 ( Android Test 대신 Junit )으로 인해 발생합니다.

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표준 JUnit 테스트의 경우 JUnit 라이브러리가 누락되었습니다. build.gradle에 추가해보세요.

dependencies {
    ...
    testCompile 'junit:junit:4.12'
    ...
}

And make sure you are putting the tests in the "test" directory parallell to the "main" package (instrumentation tests goes into "androidTest", but that is different setup).

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Force the project to "sync" via menu: Tools > Android > Sync Project with Gradle Files or force the project to "sync" by making a fake change in build.gradle file (add a space and then delete it and then click "sync now").

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In my Run/Debug Configurations I had MyTest under AndroidTests and under JUnitTests. The MyTest under AndroidTests was configured correctly, but I still got 'NoClassDefFoundError: junit/textui/ResultPrinter' error. Clicked on MyTest under JUnit and pressed '-' in upper left. This allowed MyTest to run through the device got rid of error.

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I've twice had this issue after changing some build.gradle plugins and dependencies around.

Simply turning Android Studio off and on again fixed it for me (versions 2.1.2 and 2.2).

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All the answers are good-

Make sure you have sourceSets have the test directory registered.

android{
    ...

    defaultConfig {
         ...
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }


    sourceSets {
        androidTest {
            java.srcDirs = ['src/androidTest/java']
        }
    }
}

dependencies{
    ... 
    androidTestCompile 'junit:junit:4.12'
    androidTestCompile 'com.android.support.test:runner:0.5'
}

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Just putting the solution which worked for me, this should be tried if you are setting up the environment for first time:

For windows: 1) in the environment variables add a new "system variables" ANDROID_SDK_HOME=D:\Program Files\android-sdk-windows (select your home directory of android sdk )

2) modify system variables Path, add "%Android_SDK_HOME%\tools;"

참고URL : https://stackoverflow.com/questions/19516289/exception-in-thread-main-java-lang-noclassdeffounderror-junit-textui-resultpr