> 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.
新建项目,build不过去
之前的v7包是21.1.0,然后 我改成了 27.1.1,上面的
compileSdkVersion从26改成了27,
targetSdkVersion也一样
然后build一下,就可以了
记录问题
over