情形一: Android studio下突然报错: gradle project sync failed.Basic functionality(e.g.editing,debugging) will not work properly. 解决方案:进入项目目录下,找到 gradle\wrapper\gradle-wrapper.properties 文件,记事本打开,内容如下: Tue Jul 24 14:48:54 CST 2018 distributionBase=GRADLE_USER_…