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Scaling Throughout Screens with Jetpack Compose @ Google I/O ‘24

Posted by Maru Ahues Bouza, Product Administration Director, Android Developer

Scaling Throughout Screens with Jetpack Compose

The promise of Jetpack Compose has all the time been {that a} trendy toolkit designed to construct native UI might help you construct higher apps sooner and simpler. As increasingly of you – 40% of the highest 1k apps, in truth – use (and love) Compose, we’ve been working to increase these advantages you’re seeing on cell to additionally make it easier to construct throughout type elements as effectively. At Google I/O 2024, we introduced plenty of new updates for Compose that make it easier to construct throughout type elements, together with Compose APIs to assist adaptive layouts, and new updates for Compose TV and Put on OS. From foldables to wearables to TVs, Compose is delivering options constructed to make Android growth sooner and simpler. Apps like yours are already utilizing Compose to assist extra screens with much less code.

When fascinated with layouts – assume adaptive

Yesterday, we introduced a brand new set of Compose APIs for constructing adaptive layouts, utilizing Materials steering. These APIs, now in Beta, present new layouts and parts that adapt as customers anticipate when switching between small and enormous window sizes.

The libraries present 3 new scaffolds that adapt to the completely different window sizes that customers can place apps in on various kinds of gadgets, from telephones to foldables to tablets and extra.

3 new libraries that adapt to different window sizes


helps make it simpler to construct navigation UI by robotically complying with Materials tips to offer your customers with an optimum expertise based mostly on their window dimension.

Materials tips advocate utilizing a navigation bar on the backside of compact width home windows akin to most telephones and a navigation rail on the dimensions of medium width and expanded width home windows. It was once as much as every app individually to deal with swapping between these parts; now NavigationSuiteScaffold does this for you by switching between the parts when the window dimension adjustments.

Navigation bar

ListDetailPaneScaffold & SupportingPaneScaffold

The brand new library additionally has ListDetailPaneScaffold and SupportingPaneScaffold, which make it easier to implement canonical layouts that we advocate in lots of circumstances – list-detail and supporting pane.

On a cellphone, you often arrange your app movement by means of screens. For instance, clicking on an merchandise in your checklist display brings you to the element display.

Detaileds screen

When adapting to completely different window sizes, it helps to think about your app by way of panes somewhat than screens. For a compact window dimension class, akin to a cellphone, you would possibly solely show one pane. For an expanded window dimension class, you would possibly present two, or extra panes on the identical time. ListDetailPaneScaffold and SupportingPaneScaffold make it easier to construct apps that simply change between one and two pane layouts.

Different screen layouts

You may be taught extra about all three of those APIs and get began with them within the “Constructing UI with the Materials 3 adaptive library” and “Constructing adaptive Android apps” technical classes.

“Integrating SupportingPaneScaffold was easy and fast. It enabled us to seamlessly arrange main and secondary content material on To-Dos. Relying on the window dimension class, the supporting pane adjusts the UI with none further customized logic. Delighting our customers no matter what machine they use is a key precedence for SAP Cell Begin.”
– Software program Engineer on SAP Cell Begin

Compose for Put on OS

Up to now yr, adoption of Compose for Put on OS has grown 200%, showcasing the convenience with which Compose permits builders to construct for the watch type issue.

Just lately we’ve seen high apps akin to WhatsApp, Gmail and Google Calendar constructed totally utilizing Compose for Put on OS, and it’s the advisable manner for constructing person interfaces for Put on OS apps.

At this yr’s Google I/O, Compose for Put on OS is graduating visible enhancements and fixes from beta to secure.

Up to now yr, we’ve added options akin to SwipeToReveal, to present customers further means for finishing actions, an expandableItem, to boost the usage of the smaller display and present further info the place wanted, and a variety of WearPreview supporting annotations, for making certain your app works optimally throughout the vary of machine sizes and font scales.

Compose for Wear OS previews usage in Android Studio

Compose for Put on OS previews utilization in Android Studio

You may get began with Compose for Put on OS by taking the codelab and be taught extra about all the newest updates for Put on OS by way of the technical session.

Compose for Android TV

At Google I/O ‘24, we introduced that Compose for TV 1.0.0 is now obtainable in beta. Compose for TV is our advisable method for constructing pleasant UIs for Android TV OS. It brings all the advantages of Jetpack Compose to your TV apps, making constructing stunning and practical experiences in your app a lot sooner and simpler.

The newest updates to Compose for TV embody higher efficiency, enter assist, and a complete vary of improved parts that look nice out of the field. New on this launch, we’ve added lists, navigation, chips, and settings screens. We’ve additionally up to date the developer instruments in Android Studio to incorporate a brand new mission wizard to get a working begin with Compose for TV.

The brand new TV Materials Catalog app enables you to discover parts in Compose for TV with completely different themes and layouts, and our up to date JetStream pattern exhibits the way it all suits collectively.

TV Material Catalog app in action

You may get began with Compose for TV by trying out the devoted weblog, the technical session or looking on the integration guides.

Jetpack Look

Jetpack Look 1.1.0 is now obtainable in RC, bringing a brand new unit check library, Error UIs, and new parts.

We’ve additionally launched new Canonical Widget Layouts on GitHub, that are constructed on high of the Look parts, to mean you can get began sooner with a set of layouts that align with greatest practices.

The primary set of layouts are delivered as code samples and an identical figma design package on Android UI Equipment with extra layouts coming later this yr.

Lastly, we have now new design steering printed on the UI design hub—test it out!

A pattern of Compose throughout screens: Jetcaster

A sample of Compose across screens: Jetcaster

We’ve up to date Jetcaster—one in every of our Compose samples—to adapt throughout cellphone, foldable and pill screens, and added assist for TV, Put on and homescreen widgets with Look. Jetcaster showcases how Compose lets you construct throughout a variety of gadgets utilizing a shared structure in a single mission.

See how one can extract components akin to your information layer, and design system, to advertise reuse and consistency whereas delivering an expertise tailor-made to completely different type elements. You may dive instantly into the code on GitHub.

Get began with Compose throughout screens

With these updates to Compose that will help you construct for tablets, foldables, wearables and TVs, it’s a nice time to get began! These technical classes are an awesome place to be taught extra about all the newest updates:

Study extra about how SoundCloud supported extra screens utilizing 45% much less code with Jetpack Compose!

“Our cell Compose expertise transferred on to Compose for different type elements, The ideas and most APIs are the identical throughout type elements” – Vitus Ortner, Android engineer at SoundCloud



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