新建项目遇到如下报错Conflict with dependency 'com.android.support:support-annotations' in project ':app'. R...

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.

根据报错信息很明显是依赖冲突了
在app下的build.gradle文件中的dependences {}中添加如下代码：

 androidTestCompile('com.android.support:support-annotations:26.1.0') {
        force = true
    }