The Android SDK is available from the CaféX Meetings Maven repository. It provides a custom WebView with methods for connecting to API Meetings, but not creating or administering those meetings.
Our Quick Start Guide provides a sample MainActivity.java which includes creating an API meeting using a REST call to a server-side (PHP) meeting provisioning script.
The client is responsible for ensuring that the relevant permissions are available (microphone, and optionally camera access). For a list of permissions to include in your project, see: Android SDK Permissions.