ARCore SDK for Android v1.8.0

Behavioral changes

• Auto Focus has been enabled by default in augmented_image_c and augmented_image_java samples, to improve with tracking of small, nearby image targets on devices where the ARCore camera supports Auto Focus.

Bug fixes

• Issue #683, Issue #729:
  • Fixed CPU Image Access on Xiaomi devices: Mi 8, Mi 8 SE, Mi Mix 2S, Mi Mix 3 and Pocophone F1.