Saying the creation of a beta model of Put on OS!

Posted by Ksenia Shumelchikand Developer Relations Engineer and John Nicholl, CTO of Compose for Put on OS

Wear OS watch with blue background

In the present day we launch the beta model of Written by Put on OSOur state-of-the-art defining person interface toolkit designed to assist builders create lovely person experiences for Put on OS.

Compose for Put on OS provides help for watch-optimized parts that embrace the newest Materials Design for Put on OS. Elements are constructed on prime of Compose’s core libraries and toolkit levers Fashionable Android Growthwhich helps to hurry up the event course of as an entire.

With this beta, Compose for Put on OS is now full for model 1.0 that is popping out later this 12 months, and it comprises what you’ll want to construct production-ready apps. It additionally implies that the API is steady; Going ahead, we’ll give attention to efficiency and fine-tuning current parts for model 1.0.

in beta

We have been working arduous for the reason that final I/O to carry the very best of Jetpack Compose to Put on OS, work together with the neighborhood by way of Slack, and collect developer suggestions on APIs, parts, and instruments. In consequence, we’ve got improved numerous parts corresponding to navigation, scaling lazy menus, help for enter and gestures, and rather more.

The primary beta is adopted by 21 alpha releases. Main modifications since Developer Preview Announcement Embody:

🆕 Enter parts

You required person enter parts, so we added totally different mixtures which you could customise in your watch software:

GIF for picker, slider, and step options

  • beak Permits the person to pick out an merchandise from a scrolling checklist. By default, the checklist of “infinite” selectable gadgets is repeated in each instructions, to offer the impression of a cylinder rotating from the facet. Curiously, Picker makes use of ScalingLazyColumn The implementation beneath has helped develop and refine lots of superior ScalingLazyColumn options.
  • slider It permits customers to select from a variety of values ​​and is good for adjusting settings corresponding to font dimension or brightness.
  • the stepper It’s a full display screen management element that enables customers to pick out from a set of values. For instance, customers can management the amount of their headphones.

🆕 Dialogues

We’ve added full display screen alert and affirmation composite parts that can be utilized both as navigation locations or conventional full display screen Dialogues, which might be positioned on prime of some other content material. The dialog helps drag to dismiss and can reveal the primary content material within the background in the course of the swipe gesture.

GIF watch face showing playlist options

For consistency with scaffoldshows a full-screen file dialog place indicator and vignette.

🆕 progress indicator

we added CircularProgressIndicatoran improved progress indicator for clock shows to show the progress by shifting a pointer alongside a round path in a clockwise course.

GIF for watch face showing timer

There are a number of choices for the best way to use CircularProgressIndicator: both to point out limitless progress or to specific the share of completion of a operating process. Progress indicators permit for a spot within the round path leaving room for different content material, for instance textual content time Whether it is utilized in full display screen mode.

🆕 Web page Index

That can assist you implement pagination, the person interface toolkit gives a file Horizontal Web page Indicator The element that represents the overall variety of pages and the required web page.

GIF for watch face showing page indicator

Relying on the form of the display screen, the HorizontalPageIndicator will present a visible indication of the shape issue of the lively web page and the way far it’s between pages.


  • ScalingLazyColumn: Optimization of default habits to be according to the Materials Design of Put on OS, corresponding to updating scaling parameters, further default padding and taking dimension from the scale of its contents.
  • scaffold: The PageIndicator slot has been added to make sure appropriate positioning on the rotating display screen.
  • MobilityAssured characteristic parity with Compose Navigation and the addition of edge scrolling help to allow a terrific full display screen and web page scrolling expertise.
  • curved parts: added curved And a brand new DSL that allows builders to make use of logical ideas of a curved world corresponding to radial, angular, sweeping, (counterclockwise) and in/out. curve It’s the bridge between the linear and curved worlds and curve They can be utilized to insert conventional mountable parts when it is sensible to take action.

With these current additions, the Compose Materials Catalog for Put on OS now comprises extra parts than is out there with display-based codecs and gives an modern implementation of the brand new Put on OS design tips.


Android Studio Electrical Ear Gives the newest options for the very best growth expertise with Compose for Put on OS:

  • Editor and instruments help optimization of autocomplete actions and editor
  • Put on OS Composable Preview
  • 🆕 Reside modifying to help real-time debugging
  • 🆕 Create a template for a Put on OS undertaking

The world of time measurement

In the present day we’re additionally saying the discharge of The world of time measurementan open supply undertaking from Google that gives a set of Put on libraries that complement the performance offered by Compose for Put on OS and different Put on OS APIs.

clock gears

Examine chronology

Horologist provides helpful composing equipment:

  • Media person interface parts together with playback management and audio screens
  • Materials date and time picker
  • Navigation-aware scaffold with TimeText and PositionIndicator that stays in sync with scrolling and navigation display screen modifications.

Horologist will develop to supply builders with further instruments to create nice Put on OS apps throughout varied experience. verify the The world of horology on Github To offer suggestions and contribute to public features that may be helpful to Put on builders – and keep tuned for upcoming releases!


Many Compose cell app growth ideas apply to Compose for Put on OS, so in case you’re not acquainted with the UI toolkit, begin with Jetpack composing The fundamentals.

We have ready a bunch of supplies that can assist you get began with Compose for Put on OS:

Now that Compose for Put on OS is in beta, it is time to begin utilizing Compose to rapidly carry your app to life or replace your current person interface. For extra info on creating apps for Put on OS, take a look at Developer website.

We would love to listen to from you about your experiences utilizing Compose for Put on OS and what you’ll be able to construct! Be a part of the dialogue at Kotlin Slack # composing put on channel and please proceed to make feedback on case tracker.

Completely satisfied authoring!

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