GradleCopy is a Qt framework based tool to copy Gradle caches to Android local "m2repository" directory which saves me from redownloading them (again and again).

1. First, ensure you have ANDROID_HOME environment-variable, pointing to your Android-SDK directory.
2. Create the init.gradle file in your %UserProfile%/.gradle directory, and open it (in your prefered text-editor).
3. Then, simply copy below and paste in init.gradle file (replacing any previous content):

def offlineRepoDir = "${System.getenv("ANDROID_HOME")}\\extras\\m2repository"
def repositoryClosure = {
    maven { url uri(offlineRepoDir) }
    // google()
    // mavenCentral()
}

rootProject {
    buildscript {
        ext.machineOfflineRepoDir = offlineRepoDir
    }
    allprojects {
        buildscript {
            repositories(repositoryClosure)
        }
        repositories(repositoryClosure)
    }
}

settingsEvaluated { settings ->
    settings.pluginManagement {
        buildscript {
            repositories(repositoryClosure)
        }
        repositories(repositoryClosure)
    }
}

4. Download GradleCopy if you didn't already, and launch it.

5. Uncheck the Test Run option (to skip listing what will be done).

6. At last, click the Copy button and done!

7. But sometimes Gradle only downloads .pom files, and fails to fetch related .jar files:

   • To fix that: Gradle will not even try to download related .jar files (as long as your offline repo contains related .pom file).

   • First, click the "Generate Missing Jar List" option from the Copy button's dropdown menu.

   • In the resulted window, click the "Download" button (which downloads what is missing, instead of relaying solely on Gradle).

   • Then in the same window, click "Disable incomplete lib" option from the Download button's dropdown menu (which renames any .pom file with no .jar file beside it, inside your offline m2repository directory only).

   • Previous step (the rename) can be undone by clicking "Restore incomplete lib" option (from the same menu).

   Note that because some older packages are no longer available for download, both of said downloading and renaming should be done.

Platform: broken Windows, but should also work for MacOS and Linux as well (once compiled).

Note: All codes are based and meant to be Apache 2.0 License but it does use the Qt4 framework under the LGPL or GPL license, so if you rewrite this using another framework it is pure Apache 2.0 License