I have a command line apk generator which compiles a lot of APKs using the same source code, so these apps have the same dependencies.
In the gradle documentation I can see this:
The Gradle project needs network connectivity to download dependencies.
I know that it is possible to configure gradle to work offline and not download the same dependencies that it has downloaded for other apks. How can this offline mode be activated?
Gradle does a good job of avoiding redownloading artifacts, but you can pass --offline to grade to prevent from accessing the network during builds. If it needs something from the network that it doesn't have, instead of attempting to fetch it, your build will fail.
Android Studio
In Android Studio you can make gradle to build your apps fully offline by activating this option:
Settings -> Build, Execution, Deployment -> Build tools -> Gradle
Gradle CLI
In Gradle command line interface you can get this done by using --offline flag. What Documentations say about this flag:
Specifies that the build should operate without accessing network resources. See Section 52.9.2, “Command line options to override caching”.
来源：https://stackoverflow.com/questions/32171524/how-to-configure-gradle-to-work-offline-using-cached-dependencies