自从升级了android studio 3.0 每次新建项目都会出现 下面的错误：
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.
说一个偷鸡的解决办法并且记录一下：
直接重新 Rebuild Project 一下就行