Usage is simple. First file in the package with:
PackageLoader fileInPackage: 'Android'.
Then you can use it like this:
A more complex example, using some dialogs, is included in the smalltalk_for_android.apk (you can use the QR-Code below to install the apk - but remember that you need to install sl4a before. See my previous blog-post).
To get an idea what is possible, see the the API reference. I think it is a wonderful perspective to write full blown Android apps with Smalltalk.
Coding Smalltalk on a phone or tablet is fun - the sl4a editor is a big help because it contains an api reference. If you want to hack more complex scripts, you can remote control your phone or emulator, just follow this instructions. Only one difference: you need to set the environment-variable AP_HANDSHAKE to some arbitrary value.
With this setup you can execute your script with "gst myscript.st" or just call the api via the gst console.
Sourcecode etc. is available on github.