At Google I/O, we launched the Wear OS by Google developer preview 2. This update added support for Actions on Google (AoG) and more power-related enhancements including a new battery saver mode.This developer preview includes updated Android Emulator images and a downloadable system image for the Huawei Watch 2 Bluetooth or Huawei Watch 2 Classic Bluetooth. This preview release is intended for developers only and not for daily or consumer use. Therefore, the preview release is only available via manual download and flash. Please refer to the release notes for known issues before downloading and flashing your device.Support for Actions on GoogleWe have revamped the Google Assistant on Wear OS to support features such as visual cards, follow-on suggestion chips, and text-to-speech. For developers, we added support for Actions on Google to Wear OS and existing Actions will work on Wear OS out of the box. Be sure to observe best practices for Actions on Google to get the best results such as short concise dialog and adopting to both visual and vocal feedback. This feature does not depend on Android P and is being rolled out to all Wear 2.0 users.Enhanced battery saver modeIn this Android P developer preview, we are launching an enhanced battery saver mode. While the watch is in this mode, the watch shows a power-efficient watch face and turns off a set of services including radios, the touch screen, and tilt to wake. Users can get the time by pressing the side button. A long press allows the user to switch back to a fully-operational mode and perform tasks such as paying with NFC or replying to a message. Developers should assume that their apps, watch faces, and complication data providers are not available in enhanced battery saver mode.Update on power saving featuresWe received much feedback on the power saving features in the last developer preview. As a result, we have updates on two features:Roll back of Wi-Fi off when BT is disconnected: To improve power consumption, the last developer preview would not connect to Wi-Fi when disconnected from Bluetooth. After listening carefully to user and developer feedback, we decided to roll back this change.Limited background activity and foreground service: A number of health and fitness developers have said their apps require background monitoring of the user's motion and other vitals throughout the day. The developers said their apps cannot perform background monitoring if background services are unable to set alarms and jobs. For these types of exceptional use cases, we recommend that the apps use foreground services to anchor alarms and jobs. For other use-cases, developer should look at both foreground service as well as limiting jobs and alarms to while the watch is on charger. We are still fine tuning this feature, your feedback and use-cases will be most helpful in helping us get this right.Smart Reply for bridged notificationsSmart Reply has been enabled for bridged notifications from the user's smartphone for some time. With the latest developer preview, we are introducing simplified Chinese support for our users in China. This feature is powered by an on-device model using TensorFlow Lite and the model is optimized for low-memory, low-power devices.To use this feature, developers should set setAllowGeneratedReplies of the reply action to true. Here's a sample code snippet with the important part highlighted in bold:In addition, for messaging apps, we recommend that developers use MessagingStylenotifications. This can give the algorithm a more structured data set on which to base its recommendations.
Android Things 1.0 — Android Things is Google's managed OS that enables developers to build and maintain Internet of Things devices at scale. Earlier this year at CES, we announced Lenovo, Harman, LG, and iHome are all building Assistant-enabled productspowered by Android Things. After a developer preview with over 100,000 SDK downloads and feedback from more than 10,000 developers, we announced Android Things 1.0 this week. Four new System-on-Modules (SoMs) are now supported on the platform with guaranteed long-term support for three years and additional options for extended support, making it easier to go from prototypes to production. To make product development more seamless than ever, the accompanying Android Things Console is also ready for production. It helps developers easily manage and update their devices with the latest stability fixes and security updates provided by Google.To get started with Android Things, visit our developer site and the new Community Hub to explore kits, sample code, community projects, and join Google's IoT Developers Communityto stay updated. We introduced a limited program to partner with the Android Things team for technical guidance and support building your product. If your company is interested, sign up for our OEM Partner Program. In addition to all these new developments, we're on the ground in over 140 countries, growing and expanding the developer community through programs such as Women Techmakers and Google Developer Groups (GDGs). We're investing in training programs like Google Developers Certification, building more courses through Udacity and other partners, to help developers deepen their technical capability. Today, 225 Google Developers Agency Program members from 50 agencies in 15 countries, are Android Certified. As part of our Google Developers Experts Program, we also now have more than 90 Android Developer Expertsaround the world actively supporting developers, start-ups and companies to build and launch innovative apps. We also continue to recognize the great work from top app and game developers. This year, we held our third annual Google Play Awards. The nominees represent some of the best experiences available on Android, with an emphasis on overall quality, strong design, technical performance, and innovation. Check out the winners and nominees. During Google I/O, attendees and viewers have an opportunity to dive deep with 48 Android & Play breakout sessions. Thank you for all your wonderful feedback, and please keep giving us your advice on where we should go next.