这里在stackflow（If i start a new Application then this error is showing. How i can resolve it）上经历了很多发现，这些发现并没有帮助我，也没有对在线社区进行研究。
我在清洁项目后收到了错误消息
Error:Execution failed for task ':app:preDebugAndroidTestBuild'.
Conflict with dependency 'com.android.support:support-annotations' in project ':app'. Resolved versions for app (26.1.0) and test app (27.1.1)
differ.
See https://d.android.com/r/tools/test-apk-dependency-conflicts.html for details.
重建项目后出现错误消息