这是更新Android studio 3.0.0之后出现的问题
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.
网上找了不少方法,最有用的是在build.gradle(app)的 dependences{}里面添加
androidTestCompile('com.android.support:support-annotations:26.1.0') {
force = true
}
但是只要新建新项目就还是会有这个问题,最后,尝试了一下更新android studio,3.1.4
更新完成后按提示把缺少的插件下载好,OK,成功解决