Welcome to Android 12 Developer Preview! Please give us feedback early and often, and help us make Android 12 the best release yet!

Features and APIs Overview

Android 12 introduces great new features and APIs for developers. The sections below help you learn about features for your apps and get started with the related APIs.

For a detailed list of new, modified, and removed APIs, read the API diff report. For details on new APIs visit the Android API reference — new APIs are highlighted for visibility. Also, to learn about areas where platform changes may affect your apps, be sure to check out Android 12 behavior changes for apps that target Android 12 and for all apps.

New experiences

Unified API for receiving content

Android 12 introduces a new unified API that lets you receive rich content from any available source: clipboard, keyboard, or drag and drop.

For more information, see Unified API for receiving content.

Media

Compatible media transcoding

Android 12 can automatically transcode HEVC(H.265) and HDR (HDR10 and HDR10+) videos recorded on the device to AVC (H.264), a format which is widely compatible with standard players. This takes advantage of modern codecs when they are available without sacrificing compatibility with older applications.

See compatible media transcoding for more details.

AVIF image support

Android 12 introduces support for images that use the AV1 Image File Format (AVIF). AVIF is a container format for images and sequences of images encoded using AV1. It takes advantage of the intra-frame encoded content from video compression. This dramatically improves image quality for the same file size when compared to older image formats, such as JPEG. For an in depth look at the advantages of this format, see Jake Archibald's blog post.

Generate haptic effects from audio

Android 12 apps can generate haptic feedback derived from an audio session using the phone's vibrator. This provides an opportunity for more immersive game and audio experiences. For example, haptic-enhanced ringtones can help identify callers, or a driving game could simulate the feeling of rough terrain.

See the HapticGenerator reference documentation for more information.

Native ImageDecoder support for animated GIF and WebP

In Android 12, the NDK ImageDecoder API has been expanded to decode all frames and timing data from images that use the animated GIF and animated WebP file formats. When it was introduced in Android 11, this API decoded only the first image from animations in these formats.

Use ImageDecoder instead of third-party libraries to further decrease APK size and benefit from future updates related to security and performance.

For more details on the API, refer to the API reference and the sample on GitHub.

Security

Device properties verification available in non-DPC apps

Android 12 expands the set of apps that can verify the device properties that are in an attestation certificate when these apps generate a new key.

As of Android 9 (API level 28), device policy owners (DPOs) that use Keymaster 4.0 or higher can verify the device properties in these attestation certificates. Starting in Android 12, any app that targets Android 12 can perform this verification using the setDevicePropertiesAttestationIncluded() method.

The generated device properties include the following Build fields:

  • BRAND
  • DEVICE
  • MANUFACTURER
  • MODEL
  • PRODUCT

Connectivity

Wi-Fi Aware (NAN) enhancements

Android 12 adds some enhancements to Wi-Fi Aware:

  • On devices running Android 12 and higher, you can use the onServiceLost() callback to be alerted when your app has lost a discovered service due to the service stopping or moving out of range.
  • The way that multiple data-paths (NAN Data Paths) are set up is changing to be more efficient. Earlier versions used L2 messaging to exchange peer information of the initiators, which introduced latency. On devices running Android 12 and higher, the responder (server) can be configured to accept any peer—that is, it doesn’t need to know the initiator information upfront. This speeds up datapath bringup and enables multiple point-to-point links with only one network request.
  • To prevent the framework from rejecting discovery or connection requests due to running out of resources, on devices running Android 12 and higher, you can call WifiAwareManager.getAvailableAwareResources(). This method's return value lets you get the number of available data paths, the number of available publish sessions, and the number of available subscribe sessions.