Today, Google is releasing the Developer Preview 3 (DP3) of Android Things, bringing new features and bug fixes to the platform. This preview is part of our commitment to provide regular updates to developers who are building Internet of Things (IoT) products with our platform. Android developers can quickly build smart devices using Android APIs and Google services, while staying secure with updates directly from Google. The System-on-Module (SoM) architecture supports prototyping with development boards, and then scaling them to large production runs while using the same Board Support Package (BSP) from Google.
Android Bluetooth APIs
DP3 now includes support for all Android Bluetooth APIs in android.bluetooth and android.bluetooth.le, across all Android Things supported hardware. You can now write code that interacts with both Bluetooth classic and low energy (LE) devices just like a regular Android phone. Existing samples such as Bluetooth LE advertisements and scanning and Bluetooth LE GATT can be used unmodified on Android Things. We have also provided two new samples, Bluetooth LE GATT server and Bluetooth audio sink.
USB Host support
Android version 3.1 and later supports USB Host, which allows a regular user space application to communicate with USB devices without root privileges or support needed from the Linux kernel. This functionality is now supported in Android Things, to enable interfacing with custom USB devices. Any existing code supporting USB Host will work on Android Things, and an extra sample USB Enumerator is available that demonstrates how to iterate over and print the interfaces and endpoints for each USB device.
Once again, thank you to all the developers who submitted feedback for the previous developer previews. Please continue to send us your feedback by filing bug reports and feature requests, and ask any questions on stackoverflow. To download images for Developer Preview 3, visit the Android Things download page, and find the changes in the release notes. You can also join Google’s IoT Developers Community on Google+, a great resource to keep up to date and discuss ideas, with over 4100 new members.