Trick question. It's not a thing. It's this guy:
Basically, he wears a top hat, lives in your computer, and waits for you to tell him what kind of application you wish to create.
Not every new computer comes with a Yeoman pre-installed. He lives in the npm package repository. You only have to ask for him once, then he packs up and moves into your hard drive. Make sure you clean up, he likes new and shiny things.
$ npm install -g yo
Yeoman travels light. He didn't pack any generators when he moved in. You can think of a generator like a plug-in. You get to choose what type of application you wish to create, such as a Backbone application or even a Chrome extension.
To install generator-android-gradle from npm, run:
$ npm install -g generator-android-gradle
Finally, initiate the generator:
$ yo android-gradle
Yeoman has a heart of gold. He's a person with feelings and opinions, but he's very easy to work with. If you think he's too opinionated, he can be easily convinced.
Once the installation has completed successfully the local.properties file needs to be updated to point to your Android SDK directory.
In my environment, I have the sdk installed on : ** /opt/lib/android/android-sdk-macosx ** thus my local.properties looks like
Once the local.properties file has been updated, gradle is available on the shell, execute:
$ gradle build
This compiles and builds the apk files in the AndroidApp/builds/apk directory
To start the emulator execute:
$ android avd
If configured correctly, this would start the avd allowing you to start the emulator
To install and run the app on the emulator execute:
$ adb install AndroidApp/build/apk/AndroidApp-debug-unaligned.apk
This will create the Hello World app on the emulator.