Fixed
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Comments
cu...@google.com
ap...@google.com
A couple of questions:
1. Have you saw crash in real device or only in simulators?
2. Do you use dynamic feature for language ID?
1. Have you saw crash in real device or only in simulators?
2. Do you use dynamic feature for language ID?
cu...@google.com
Tested on Android 12 Emulator with custom executor, but cannot repro this issue.
ap...@google.com
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Second crash in the description is from a real device. Experienced it myself on two different Xiaomi phones, plus lots of crashes from users in the Google Play console.
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Dynamic features are not used in the application.
As a wild guess, I have downgraded build tools from 31.0.0 to 30.0.3, compileSdk from 31 to 30, and moved all work with Language ID to the service in a separate process (just to be sure that crash can kill secondary process instead of main). This combination is in beta for 2 days by now and I don't see any SIGSEGV crashes.
Description
If you show 2
BiometricPrompts back-to-back on a Pixel 4 (which uses face unlock), the second prompt will be immediately dismissed. This does not happen on devices that use fingerprint, like a Pixel 2.I've attached a sample project that reproduces the issue. You can configure the delay between the first prompt being dismissed and the second being shown - with a delay of 400ms the issue reliably reproduces, and with a delay of 600ms it does not.
Here's a video of the sample on a Pixel 4:https://i.imgur.com/4sCWOm0.mp4
Here's a video of the sample on a Pixel 2:https://i.imgur.com/5dDI4zO.mp4
I believe it's caused by
postDelayedNote that this is a bug in the framework, not in the androidx.biometric library, but there doesn't seems to be a relevant component for framework biometrics (and it should be possible to work around this in androidx).
BUILD INFO:
STEPS TO REPRODUCE:
EXPECTED RESULTS: Both prompts work correctly.
OBSERVED RESULTS: The second prompt is immediately dismissed.
NUMBER OF TIMES YOU WERE ABLE TO REPRODUCE: 3/3