意外的顶级例外：DexException：多DEX文件定义 - Hamcrest [英] UNEXPECTED TOP-LEVEL EXCEPTION: DexException: Multiple dex files define -- Hamcrest
问题描述
当我运行从androidTest目录下的一个方法，我得到这个错误。目前，我正在试图测试出居preSSO UI测试，我遇到下面的错误描述。
I get this error when I run a method from under the androidTest directory. I'm currently attempting to test out Espresso UI testing, and I encounter the error depicted below.
我看了堆栈溢出其他类似的问题，并根据他们的回答，似乎有重复的类。我不能完全确定哪些类是重复的;我试图寻找MatcherAssert专（由第四图所示），但由于我是新来的Android，我不能完全肯定，如果有应该是所有三个hamcrest核心，集成和图书馆。可能有其他冲突一样好，但我真的很AP preciate什么复制存在任何指导。
I've looked at other similar questions on Stack Overflow, and according to their answers, it seems that there are duplicated classes. I am not entirely sure which classes are duplicated; I tried searching for MatcherAssert specifically (shown by the fourth picture), but since I'm new to Android, I'm not entirely sure if there are supposed to be all three of hamcrest-core, integration, and library. There are probably other conflicts as well, but I would really appreciate any guidance on what duplicates there are.
我目前使用的buildToolsVersion 21.1.2。关于非零值2，我尝试添加
I am currently using buildToolsVersion 21.1.2. Regarding the "non-zero exit value 2," I tried adding
multiDexEnabled true
推荐答案
现在的错误是固定的。
我所做的是我删除
androidTestCompile 'com.android.support.test:testing-support-lib:0.1'
这的build.gradle，并从2.1更新长者preSSO至2.2。
from build.gradle, and updated Espresso from 2.1 to 2.2.
我意识到我没有我的长者preSSO测试用例中添加仪表注册，所以我补充说，每官方Android开发网站。
I realized I did not add Instrumentation Registry within my Espresso test case, so I added that per the official Android development website.
在我无效缓存（文件 - >的Invalidate缓存/重新启动），重新启动，然后清理和重建一切。我跑测试的情况下，错误不再发生。
After that I invalidated caches (File -> Invalidate Caches/ Restart), restarted and then cleaned and rebuilt everything. I ran the test case, the error no longer occurred.
我不完全了解是什么导致了错误，但由于上面的步骤，现在它得到过去过去的障碍。
I do not fully understand what caused the error, but due to the above steps, now it gets past the past roadblock.
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