Android studio Error:Execution failed for task ':app:preDebugAndroidTestBuild'错误的解决办法

Android studio新建工程后出现如下错误

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 

解决办法：在 build.gradle 添加

?

android {
 ...
}
configurations.all {
 resolutionStrategy.force 'com.android.support:support-annotations:27.1.1'
}
dependencies {
 ...
}

转自：https://www.2cto.com/kf/201807/760034.html