当我尝试使用 Unity 构建和运行我的游戏时会发生此错误。我还从这里导入了 GooglePlayServices/ads，并且还有最新的 android sdk 和 jdk-8u144。
这是错误日志：
Gradle failed to fetch dependencies
Failed to run 'Temp\PlayServicesResolverGradle\gradlew.bat -b Temp\PlayServicesResolverGradle\PlayServicesResolver.scripts.download_artifacts. gradle --no-daemon "-PANDROID_HOME=C:/Users/rfkha/AppData/Local/Android/sdk1" "- PTARGET_DIR=C:\Users\rfkha\Documents\Space Shooter\Assets\Plugins\Android" "- PMAVEN_REPOS=https://maven.google.com" "- PPACKAGES_TO_COPY=com.google.android.gms:play-services-ads:11.2.2"'
stdout:
ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.
stderr:
exit code: 1
UnityEngine.Debug:LogError(Object)
GooglePlayServices.PlayServicesResolver:LogDelegate(String, LogLevel)
Google.JarResolver.PlayServicesSupport:Log(String, LogLevel, Boolean)
GooglePlayServices.<GradleResolution>c__AnonStorey14:<>m__20(Result)
GooglePlayServices.<GradleResolution>c__AnonStorey15:<>m__29()
GooglePlayServices.PlayServicesResolver:PumpUpdateQueue()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
第二个错误：
Resolution failed
Failed to fetch the following dependencies:
com.google.android.gms:play-services-ads:11.2.2
UnityEngine.Debug:LogError(Object)
GooglePlayServices.PlayServicesResolver:LogDelegate(String, LogLevel)
Google.JarResolver.PlayServicesSupport:Log(String, LogLevel, Boolean)
GooglePlayServices.ResolverVer1_1:LogMissingDependenciesError(List`1)
GooglePlayServices.<DoResolutionUnsafe>c__AnonStorey17:<>m__26(List`1)
GooglePlayServices.<GradleResolution>c__AnonStorey14:<>m__20(Result)
GooglePlayServices.<GradleResolution>c__AnonStorey15:<>m__29()
GooglePlayServices.PlayServicesResolver:PumpUpdateQueue()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()