                        课程
                    
                        /移动开发
                        
                            /Android
                        
                        /Android UiAutomator 2.0 入门实战

新建项目时 gradle build 报错

* What went wrong:

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.

按照报错提示，百度后试了各种办法，还是有这个错误，请问老师如何解决呢