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Asserting Cross system SDK Developer Preview for constructing wealthy multi-device experiences on Android

Posted by Alex Rocha – Developer Relations Engineer Supervisor, Ryan Ausanka-Crues – Eng Supervisor, Multi-device improvement, Stella Loh – Product Supervisor, Multi-device improvement

At the moment we’re launching our Developer Preview of the brand new Cross system SDK for Android. First introduced throughout the Google I/O ‘22 Multi-device improvement session, our Cross system SDK permits builders to construct wealthy multi-device experiences with a easy and intuitive set of APIs. This SDK abstracts away the intricacies concerned with working with system discovery, authentication, and connection protocols, permitting you to deal with what issues most—constructing pleasant consumer experiences and connecting these experiences throughout a wide range of kind elements and platforms.

What’s in Developer Preview

This preliminary launch accommodates a set of wealthy APIs centered across the core performance of Machine discovery, Safe connections, and Multi-device Periods.

  1. Machine discovery: Simply discover close by gadgets, authorize peer-to-peer communication, and begin the goal software on receiving gadgets.
  2. Safe connections: Allow encrypted, low-latency bi-directional information sharing between licensed gadgets.
  3. Multi-device Periods: Allow transferring or extending an software’s consumer expertise throughout a number of gadgets.

In flip, it will will let you construct compelling cross-device experiences by enabling and simplifying the next use circumstances:

  • Discovering and authorizing communication with close by gadgets.
  • Sharing an app’s present state with the identical app on one other system.
  • Beginning the app on a secondary system with out having to maintain the app working in background.
  • Establishing safe connections for gadgets to speak with one another.
  • Enabling job handoff the place the consumer begins a job on one system, and may simply proceed on one other system.

Beginning at the moment with a Developer Preview for Android telephones and tablets, the Cross system SDK shall be out there later for different Android surfaces and non-Android OSs.

Beneath The Hood

The Cross system SDK gives a software program abstraction layer that handles all points of cross-device connectivity, leveraging wi-fi applied sciences akin to Bluetooth, Wi-Fi, and Extremely-wide band; our SDK does all of the heavy-lifting beneath the hood, providing you a modular,connectivity-agnostic API that helps bi-directional communication between gadgets and is backward appropriate to Android 8. As well as, apps is not going to need to declare or request Runtime Permissions for any of the underlying connectivity protocols used (akin to BLUETOOTH_CONNECT, BLUETOOTH_SCAN, ACCESS_FINE_LOCATION, and so on.), and the consumer can enable apps to hook up with solely the system(s) they chose.

Getting began with Developer Preview

Head over to our developer information to get began and check out the Developer Preview of the Cross system SDK for Android. Ensure to take a look at our Rock Paper Scissor pattern app (Kotlin and Java) on GitHub for an indication on how you can work with the assorted APIs and our Google I/O ‘22 Multi-device improvement session for a basic overview of the SDK.


We’d love to listen to from you throughout this preliminary Developer Preview launch to assist us form the SDK and affect future roadmapping, so please share your suggestions and tell us your expertise with the SDK!



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