1.
Error:Failed to open zip file. Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.) <a href="syncProject">Re-download dependencies and sync project (requires network)</a> <a href="syncProject">Re-download dependencies and sync project (requires network)</a>
工程->gradle->wrapper->gradle-wrapper.properties 修改
distributionUrl=https://services.gradle.org/distributions/gradle-4.1-all.zip
为
distributionUrl=http://services.gradle.org/distributions/gradle-4.1-all.zip