Unity打包安卓报错 Failed to find Build Tools revision 30.0.0

CommandInvokationFailure: Gradle build failed. 
C:/Java/jdk1.8.0_171\bin\java.exe -classpath "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-4.0.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx2048m" "assembleDebug"

stderr[

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'gradleOut'.
> Failed to find Build Tools revision 30.0.0

unity打包安卓类似这种错误的，可以到自己unity的安装目录中修改unity默认打包apk的编译工具.

在Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\GradleTemplates\mainTemplate.gradle路径下找到mainTemplate.gradle，并用记事本打开，找到buildToolsVersion 'BUILDTOOLS’这句代码，修改为buildToolsVersion ‘30.0.0-rc4’（我的buildTools工具版本是30.0.0-rc4），根据自己有的buildTools版本进行修改