ARCore SDK for Android v1.20.0

Known issues

• Issue 141500087: When using Android Emulator x86_64 system images on macOS with ARCore SDK 1.16.0 or later, Google Play Services for AR will crash. As a workaround, use an x86 system image.

Breaking & behavioral changes

• Beginning in December 2020, AR-enabled apps built using ARCore SDK 1.11.0 or earlier will no longer be able to host or resolve Cloud Anchors. Apps built with ARCore SDK 1.12.0 or later are unaffected. To learn more about this breaking change, and for instructions on how to update your app, see the Cloud Anchors deprecation policy.

New APIs and capabilities

• Added persistent Cloud Anchors, which let you increase the time-to-live (TTL) of Cloud Anchors to 365 days. With the Cloud Anchor Management API, you can also extend the lifetime of a Cloud Anchor. Use of persistent Cloud Anchors is covered by the new Cloud Anchors deprecation policy.
  • C: Developer guide, ArSession_hostAndAcquireNewCloudAnchorWithTtl, ArSession_estimateFeatureMapQualityForHosting.
  • Java: Developer guide, hostCloudAnchorWithTtl, estimateFeatureMapQualityForHosting.
• Updated image metadata capabilities:
  C: The new ArImageMetadata_getAllKeys and ArImageMetadata_getConstEntry functions let you get image metadata without having to call the Android NDK camera stack APIs. See the developer guide
  Java: The ImageMetaData#get*(int) method now also throws MetadataNotFoundException. See the developer guide.

Deprecations

• The ArImageMetadata_getNdkCameraMetadata has been deprecated and should no longer be called.

Other changes

• Java: Added new persistent_cloud_anchor_java sample app.
• Changed hello_ar_java and hello_ar_c samples to acquire depth images only when tracking is active. This avoids logging unactionable errors when tracking is not active.

Bug fixes

• Fixed an issue where Chrome WebXR immersive-ar stopped working on 64-bit Android Q+.