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Saturday, February 22, 2025

The Second Beta of Android 16



The Second Beta of Android 16

Posted by Matthew McCullough – VP of Product Administration, Android Developer

The Second Beta of Android 16

At this time we’re releasing the second beta of Android 16, persevering with our work to construct a platform that allows artistic expression. You possibly can enroll any supported Pixel gadget to get this and future Android Beta updates over-the-air.

This construct provides new help for skilled digicam experiences, graphical results, extends our efficiency framework, and continues the evolution of options associated to privateness, safety, and background duties. We’re wanting ahead to listening to what you assume, and thanks prematurely in your continued assist in making Android a platform that works for everybody.

Media and digicam updates

Android 16 enhances help for skilled digicam customers, permitting for hybrid auto publicity together with exact colour temperature and tint changes. It is simpler than ever to seize movement photographs with new Intent actions, and we’re persevering with to enhance UltraHDR photographs, with help for HEIC encoding and new parameters from the ISO 21496-1 draft customary.

Hybrid auto-exposure

Android 16 provides new hybrid auto-exposure modes to Camera2, permitting you to manually management particular points of publicity whereas letting the auto-exposure (AE) algorithm deal with the remaining. You possibly can management ISO + AE, and publicity time + AE, offering better flexibility in comparison with the present strategy the place you both have full handbook management or rely fully on auto-exposure.

enjoyable setISOPriority() {
   // ...

    val availablePriorityModes = mStaticInfo.traits.get(
        CameraCharacteristics.CONTROL_AE_AVAILABLE_PRIORITY_MODES
    )
    // ...
    
    // Activate AE mode to set precedence mode
    reqBuilder[CaptureRequest.CONTROL_AE_MODE] = CameraMetadata.CONTROL_AE_MODE_ON
    reqBuilder[CaptureRequest.CONTROL_AE_PRIORITY_MODE] = CameraMetadata.CONTROL_AE_PRIORITY_MODE_SENSOR_SENSITIVITY_PRIORITY
    reqBuilder[CaptureRequest.SENSOR_SENSITIVITY] = TEST_SENSITIVITY_VALUE
    val request: CaptureRequest = reqBuilder.construct()

    // ...

}

Exact colour temperature and tint changes

Android 16 provides digicam help for high-quality colour temperature and tint changes to higher help skilled video recording purposes. White steadiness settings are at present managed by way of CONTROL_AWB_MODE, which comprises choices restricted to a preset checklist, akin to Incandescent, Cloudy, and Twilight. The COLOR_CORRECTION_MODE_CCT allows using COLOR_CORRECTION_COLOR_TEMPERATURE and COLOR_CORRECTION_COLOR_TINT for exact changes of white steadiness primarily based on the correlated colour temperature.

enjoyable setCCT() {
    // ... (Your present code earlier than this level) ...

    val colorTemperatureRange: Vary =
        mStaticInfo.traits[CameraCharacteristics.COLOR_CORRECTION_COLOR_TEMPERATURE_RANGE]

    // Set to handbook mode to allow CCT mode
    reqBuilder[CaptureRequest.CONTROL_AWB_MODE] = CameraMetadata.CONTROL_AWB_MODE_OFF
    reqBuilder[CaptureRequest.COLOR_CORRECTION_MODE] = CameraMetadata.COLOR_CORRECTION_MODE_CCT
    reqBuilder[CaptureRequest.COLOR_CORRECTION_COLOR_TEMPERATURE] = 5000
    reqBuilder[CaptureRequest.COLOR_CORRECTION_COLOR_TINT] = 30

    val request: CaptureRequest = reqBuilder.construct()

    // ... (Your present code after this level) ...
}

Five photos of the back of a Google Pixel phone demonstrate different color temperatures and tints. The original photo is in the top left, followed by Tint -50, Tint +50, Temp 3000, and Temp 7000.

Movement picture seize intent actions

Android 16 provides customary Intent actions — ACTION_MOTION_PHOTO_CAPTURE, and ACTION_MOTION_PHOTO_CAPTURE_SECURE — which request that the digicam utility seize a movement picture and return it.

Moving image of a diverse group of friends playing a game of horseshoe

You need to both cross an additional EXTRA_OUTPUT to regulate the place the picture will likely be written, or a Uri by way of Intent setClipData. If you happen to do not set a ClipData, will probably be copied there for you when calling Context.startActivity.

UltraHDR picture enhancements

A split-screen image compares Standard Dynamic Range (SDR) and High Dynamic Range (HDR) image quality side-by-side using a singular image of a detailed landscape. The HDR side is more vivid and vibrant.

Android 16 continues our work to ship dazzling picture high quality with UltraHDR photographs. It provides help for UltraHDR photographs within the HEIC file format. These photographs will get ImageFormat kind HEIC_ULTRAHDR and can comprise an embedded gainmap just like the present UltraHDR JPEG format. We’re engaged on AVIF help for UltraHDR as nicely, so keep tuned.

As well as, Android 16 implements further parameters in UltraHDR from the ISO 21496-1 draft customary, together with the power to get and set the colorspace that gainmap math ought to be utilized in, in addition to help for HDR encoded base photographs with SDR gainmaps.

Customized graphical results with AGSL

Android 16 provides RuntimeColorFilter and RuntimeXfermode, permitting you to creator advanced results like Threshold, Sepia, and Hue Saturation and apply them to attract calls. Since Android 13, you’ve got been ready to make use of AGSL to create customized RuntimeShaders that reach Shaders. The brand new API mirrors this, including an AGSL-powered RuntimeColorFilter that extends ColorFilters, and a Xfermode impact that means that you can implement AGSL-based customized compositing and mixing between supply and vacation spot pixels.

personal val thresholdEffectString = """
    uniform half threshold;
    half4 essential(half4 c) {
        half luminosity = dot(c.rgb, half3(0.2126, 0.7152, 0.0722));
        half bw = step(threshold, luminosity);
        return bw.xxx1 * c.a;
    }"""

enjoyable setCustomColorFilter(paint: Paint) {
   val filter = RuntimeColorFilter(thresholdEffectString)
   filter.setFloatUniform(0.5)
   paint.colorFilter = filter
}

Habits adjustments

With each Android launch, we search to make the platform extra environment friendly, privateness acutely aware, internationalization pleasant, and strong, balancing the wants of apps towards {hardware} help, system efficiency, consumer privateness, and battery life. This can lead to conduct adjustments that impression compatibility.

Edge to edge opt-out going away

Android 15 enforced edge-to-edge for apps focusing on Android 15 (SDK 35), however your app might opt-out by setting R.attr#windowOptOutEdgeToEdgeEnforcement to true. As soon as your app targets Android 16 (Baklava), R.attr#windowOptOutEdgeToEdgeEnforcement is deprecated and disabled and your app can not opt-out of going edge-to-edge. To be suitable with Android 16 Beta 2, guarantee your app helps edge-to-edge and take away any use of R.attr#windowOptOutEdgeToEdgeEnforcement. To help edge-to-edge, see the Compose and Views steering. Please tell us about issues in our tracker on the suggestions web page.

Well being and health permissions

For apps focusing on Android 16 or larger, BODY_SENSORS permissions are transitioning to the granular permissions below android.permissions.well being additionally utilized by Well being Join. Any API beforehand requiring BODY_SENSORS or BODY_SENSORS_BACKGROUND will now require the corresponding android.permissions.well being permission. This impacts the next information sorts, APIs, and foreground service sorts:

In case your app makes use of these APIs, it ought to now request the respective granular permissions:

These permissions are the identical as people who guard entry to studying information from Well being Join, the Android datastore for well being, health, and wellness information.

Deserted empty jobs cease cause

An deserted job happens when the JobParameters object related to the job has been rubbish collected, however jobFinished has not been known as to sign job completion. This means that the job could also be working and being rescheduled with out the appliance’s consciousness.

Purposes in Android 16 that depend on JobScheduler with out sustaining a powerful reference to the JobParameters object will now be granted the brand new job cease cause STOP_REASON_TIMEOUT_ABANDONED on timeout, as an alternative of STOP_REASON_TIMEOUT.

If there are frequent occurrences of the brand new deserted cease cause, the system will take mitigation steps to cut back job frequency. Please use the brand new cease cause to detect and scale back deserted jobs.

Be aware: If you happen to’re utilizing WorkManager, you are not anticipated to be impacted by this variation — one good aspect impact of utilizing Android Jetpack to schedule your work.

Intent redirect adjustments

Android 16 introduces default safety hardening towards Intent redirection assaults no matter your app’s targetSDK model. The removeLaunchSecurityProtection API means that you can opt-out of this safety in case your testing reveals points.

Be aware: Opting out of safety protections ought to be performed with warning and solely when completely obligatory, as it might improve the chance of safety vulnerabilities.

val iSublevel = intent.getParcelableExtra("sub_intent", Intent::class.java)
iSublevel?.let {
    it.removeLaunchSecurityProtection()
    startActivity(it)
}

Elegant font APIs deprecated and disabled

Apps focusing on Android 15 (API stage 35) have the elegantTextHeight TextView attribute set to true by default, changing the compact font with one that’s far more readable. You could possibly override this by setting the elegantTextHeight attribute to false.

Android 16 deprecates the elegantTextHeight attribute, and the attribute will likely be ignored as soon as your app targets Android 16. The “UI fonts” managed by these APIs are being discontinued, so you must adapt any layouts to make sure constant and future proof textual content rendering in Arabic, Lao, Myanmar, Tamil, Gujarati, Kannada, Malayalam, Odia, Telugu or Thai.

Example of default eleganttextHeight behavior for apps targeting Android 14 (API level 34) and lower

default elegantTextHeight conduct for apps focusing on Android 14 (API stage 34) and decrease

Example of default elegantTextHeight behavior for apps targeting Android 15 (API level 35) and higher

default elegantTextHeight conduct for apps focusing on Android 15 (API stage 35) and better

16 KB web page measurement compatibility mode

Android 15 launched help for 16KB reminiscence pages to optimize efficiency of the platform. Android 16 provides a compatibility mode, permitting some apps constructed for 4K reminiscence pages to run on a tool configured for 16KB reminiscence pages.

If Android detects that your app has 4KB aligned reminiscence pages, it is going to robotically use compatibility mode and show a notification dialog to the consumer. Setting the android:pageSizeCompat property within the AndroidManifest.xml to allow the backwards compatibility mode will stop the show of the dialog when your app launches. For finest efficiency, reliability, and stability, your app ought to nonetheless be 16KB aligned. Learn our latest weblog submit about updating your apps to help 16KB reminiscence pages for extra particulars.

Screenshot of PageSizeCompatTestApp in Android 16

Measurement system customization

Customers can now customise their measurement system in regional preferences inside Settings. The consumer choice is included as a part of the locale code, so you possibly can register a BroadcastReceiver on ACTION_LOCALE_CHANGED to deal with locale configuration adjustments when regional preferences change.

Utilizing formatters will help match the native expertise. For instance, “0.5 in” in English (United States), is “12,7 mm” for a consumer who has set their telephone to English (Denmark) or who makes use of their telephone in English (United States) with the metric system because the measurement system choice.

To search out these settings in Android 16 Beta 2, open the Settings app and navigate to System > Languages & area.

Content material dealing with for reside wallpapers

In Android 16, the reside wallpaper framework is gaining a brand new content material API to deal with the challenges of dynamic, user-driven wallpapers. Presently, reside wallpapers incorporating user-provided content material require advanced, service-specific implementations. Android 16 introduces WallpaperDescription and WallpaperInstance. WallpaperDescription means that you can establish distinct situations of a reside wallpaper from the identical service. For instance, a wallpaper that has situations on each the house display and on the lock display might have distinctive content material in each locations. The wallpaper picker and WallpaperManager use this metadata to higher current wallpapers to customers, streamlining the method so that you can create numerous and personalised reside wallpaper experiences.

Headroom APIs in ADPF

The SystemHealthManager introduces the getCpuHeadroom and getGpuHeadroom APIs, designed to offer video games and resource-intensive apps with estimates of obtainable CPU and GPU sources. These strategies supply a means so that you can gauge how your app or recreation can finest enhance system well being, significantly when used together with different Android Dynamic Efficiency Framework (ADPF) APIs that detect thermal throttling. Through the use of CpuHeadroomParams and GpuHeadroomParams on supported units, it is possible for you to to customise the time window used to compute the headroom and choose between common or minimal useful resource availability. This will help you scale back your CPU or GPU useful resource utilization accordingly, main to higher consumer experiences and improved battery life.

Key sharing API

Android 16 provides APIs that help sharing entry to Android Keystore keys with different apps. The brand new KeyStoreManager class helps granting and revoking entry to keys by app uid, and consists of an API for apps to entry shared keys.

Standardized image and audio high quality framework for TVs

The brand new MediaQuality bundle in Android 16 exposes a set of standardized APIs for entry to audio and film profiles and hardware-related settings. This enables streaming apps to question profiles and apply them to media dynamically:

    • Films mastered with a wider dynamic vary require better colour accuracy to see delicate particulars in shadows and alter to ambient gentle, so a profile that prefers colour accuracy over brightness could also be applicable.
    • Reside sporting occasions are sometimes mastered with a slender dynamic vary, however are sometimes watched in daylight, so a profile that offers choice to brightness over colour accuracy can provide higher outcomes.
    • Absolutely interactive content material desires minimal processing to cut back latency, and needs larger body charges, which is why many TV’s ship with a recreation profile.

The API permits apps to modify between profiles and customers to get pleasure from the advantages of tuning supported TVs to finest swimsuit their content material.

Accessibility

Android 16 provides further APIs to boost UI semantics that assist enhance consistency for customers that depend on accessibility providers, akin to TalkBack.

Period added to TtsSpan

Android 16 extends TtsSpan with a TYPE_DURATION, consisting of ARG_HOURS, ARG_MINUTES, and ARG_SECONDS. This lets you immediately annotate time length, guaranteeing correct and constant text-to-speech output with providers like TalkBack.

Assist parts with a number of labels

Android at present permits UI parts to derive their accessibility label from one other, and now affords the power for a number of labels to be related, a typical situation in net content material. By introducing a list-based API inside AccessibilityNodeInfo, Android can immediately help these multi-label relationships. As a part of this variation, we have deprecated AccessibilityNodeInfo setLabeledBy and getLabeledBy in favor of addLabeledBy, removeLabeledBy, and getLabeledByList.

Improved help for expandable parts

Android 16 provides accessibility APIs that mean you can convey the expanded or collapsed state of interactive parts, akin to menus and expandable lists. By setting the expanded state utilizing setExpandedState and dispatching TYPE_WINDOW_CONTENT_CHANGED AccessibilityEvents with a CONTENT_CHANGE_TYPE_EXPANDED content material change kind, you possibly can be sure that display readers like TalkBack announce state adjustments, offering a extra intuitive and inclusive consumer expertise.

Indeterminate ProgressBars

Android 16 provides RANGE_TYPE_INDETERMINATE, giving a means so that you can expose RangeInfo for each determinate and indeterminate ProgressBar widgets, permitting providers like TalkBack to extra persistently present suggestions for progress indicators.

Tri-state CheckBox

The brand new AccessibilityNodeInfo getChecked and setChecked(int) strategies in Android 16 now help a “partially checked” state along with “checked” and “unchecked.” This replaces the deprecated boolean isChecked and setChecked(boolean).

Two Android API releases in 2025

This preview is for the subsequent main launch of Android with a deliberate launch in Q2 of 2025 and we plan to have one other launch with new developer APIs in This fall. The Q2 main launch would be the solely launch in 2025 to incorporate conduct adjustments that might have an effect on apps. The This fall minor launch will decide up characteristic updates, optimizations, and bug fixes; like our non-SDK quarterly releases, it won’t embrace any intentional app-impacting conduct adjustments.

2025 SDK release timeline showing a features only update in Q1 and Q3, a major SDK release with behavior changes, APIs, and features in Q2, and a minor SDK release with APIs and features in Q4

We’ll proceed to have quarterly Android releases. The Q1 and Q3 updates present incremental updates to make sure steady high quality. We’re placing further power into working with our gadget companions to carry the Q2 launch to as many units as potential.

There’s no change to the goal API stage necessities and the related dates for apps in Google Play; our plans are for one annual requirement annually, tied to the most important API stage.

The right way to prepare

Along with performing compatibility testing on this subsequent main launch, just remember to’re compiling your apps towards the brand new SDK, and use the compatibility framework to allow targetSdkVersion-gated conduct adjustments as they turn into accessible for early testing.

App compatibility

The Android 16 production timeline shows the release stages, highlighting 'Beta Releases' and 'Platform Stability' in blue and green, respectively, from December to the final release.

The Android 16 Preview program runs from November 2024 till the ultimate public launch in Q2 of 2025. At key growth milestones, we’ll ship updates in your growth and testing environments. Every replace consists of SDK instruments, system photographs, emulators, API reference, and API diffs. We’ll spotlight vital APIs as they’re prepared to check within the preview program in blogs and on the Android 16 developer web site.

We’re focusing on March of 2025 for our Platform Stability milestone. At this milestone, we’ll ship ultimate SDK/NDK APIs and in addition ultimate inner APIs and app-facing system behaviors. From that point you’ll have a number of months earlier than the ultimate launch to finish your testing. Be taught extra by checking the launch timeline particulars.

Get began with Android 16

You possibly can enroll any supported Pixel gadget to get this and future Android Beta updates over-the-air. If you happen to don’t have a Pixel gadget, you possibly can use the 64-bit system photographs with the Android Emulator in Android Studio. If you’re at present on Android 16 Beta 1 or are already within the Android Beta program, you’ll be supplied an over-the-air replace to Beta 2.

We’re on the lookout for your suggestions so please report points and submit characteristic requests on the suggestions web page. The sooner we get your suggestions, the extra we will embrace in our work on the ultimate launch.

For the perfect growth expertise with Android 16, we advocate that you just use the newest preview of Android Studio (Meerkat). When you’re arrange, listed here are a number of the issues you must do:

    • Compile towards the brand new SDK, take a look at in CI environments, and report any points in our tracker on the suggestions web page.
    • Check your present app for compatibility, study whether or not your app is affected by adjustments in Android 16, and set up your app onto a tool or emulator working Android 16 and extensively take a look at it.

We’ll replace the beta system photographs and SDK repeatedly all through the Android 16 launch cycle. When you’ve put in a beta construct, you’ll robotically get future updates over-the-air for all later previews and Betas.

For full data, go to the Android 16 developer web site.

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