解决Android Studio No cached version of org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.50 available for offline mode.

打开 file --> Settings... --> Build,Execution,Deployment下点击 Gradle

在Global Gradle settings　处　取消勾选　Offline work

然后 Apply ，ok。

再在file下，点一次：Sync Project With Gradle，就会搞定。