Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

导入demo时会经常遇到这些报错，如：

Error:Failed to open zip file.

Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

Re-download dependencies and sync project (requires network)

Re-download dependencies and sync project (requires network)

原因：问题出在gradle-wrapper.properties上，出现这个问题的项目都是应为使用了gradle-3.3-all.zip，而studio 无法直接下载gradle-3.3-all.zip导致

处理方法：把gradle-wrapper.properties里gradle的版本改为

https\://services.gradle.org/distributions/gradle-2.14.1-all.zip

，再去重新build，这样就好了！

参考地址：

http://www.jcodecraeer.com/a/anzhuokaifa/Android_Studio/2017/0317/7691.html