IssueTracker

Thank you for reporting this issue. For us to further investigate this issue, please provide the following additional information:

Android build
Which Android build are you using? (e.g. OPP1.170223.012)

Steps to reproduce
What steps are needed to reproduce this issue?

Please provide sample project or apk to reproduce the issue.  Also mention the steps to be followed for reproducing the issue with the given sample project or apk.

Frequency
How frequently does this issue occur? (e.g 100% of the time, 10% of the time)

Screen record of the issue, for clarity
Please capture screen record or video of the issue using following steps:
adb shell screenrecord /sdcard/video.mp4
Subsequently use following command to pull the recorded file:
adb pull /sdcard/video.mp4
Attach the file to this issue.

NOTE : To avoid leaking private information, please share screenshots and bugreports only in Google Drive. Share files with android-bugreport@google.com and include only Google drive links in your bug.  Bug report attachments should not be included directly in issue reports.

Android 9 on Nokia 7 Plus
Build number 00WW_3_54H_SP03

Android Studio 3.5.1 on macOS 10.13.6
compileSdkVersion 29
buildToolsVersion '29.0.2'
minSdkVersion 17
targetSdkVersion 28
implementation 'androidx.biometric:biometric:1.0.0-rc01'

Code taken from "Allow for fallback to non-biometric credentials" in
https://developer.android.com/training/sign-in/biometric-auth

Problem:
1. Show biometric prompt.
2. Tap "USE PASSWORD" instead of scanning fingerprint.
3. Unlock using pattern.
4. Activity stops responding.
See attached MP4 video.

This happens consistently.

Project attached in MyApplication.zip

Same issue with androidx.biometric:biometric:1.0.0-rc02

Android 9 on Nokia 7 Plus
Build number 00WW_3_54H_SP03

Android Studio 3.5.1 on macOS 10.13.6
compileSdkVersion 29
buildToolsVersion '29.0.2'
minSdkVersion 17
targetSdkVersion 28
implementation 'androidx.biometric:biometric:1.0.0-rc02'

Code taken from "Allow for fallback to non-biometric credentials" in
https://developer.android.com/training/sign-in/biometric-auth

Problem:
1. Show biometric prompt.
2. Tap "USE PASSWORD" instead of scanning fingerprint.
3. Unlock using pattern.
4. Activity stops responding.
See attached MP4 video.

This happens consistently.

I am facing the exact same issue.

Android 9 on Moto Z2 Play (XT1710-07)
Build number PPS29.133-30

Android Studio 3.5.1 on Windows 10 Pro
compileSdkVersion 28
buildToolsVersion '28.0.3'
minSdkVersion 23
targetSdkVersion 28
implementation 'androidx.biometric:biometric:1.0.0-rc02'

Issue is reproducible. More details are here - https://drive.google.com/open?id=1DoJlZ4WtmgbEPhH2HxNRsxLaG2MHL2b3  (internal only link)

I don't know what this is abou?

On Tue, Nov 5, 2019, 3:19 AM <buganizer-system@google.com> wrote:

This error case appears to be triggered by creating BiometricPrompt immediately before calling authenticate(), rather than recreating the prompt in the Activity's onCreate() (or Fragment's onCreateView()) lifecycle method as intended. That's obviously an easy mistake to make, so I'll work on making sure the documentation is clearer here.

The fact that the activity appears to hang afterward is definitely a bug and will be fixed by aosp/1151594, likely in a 1.0.1 bugfix release. For now, I'm closing this bug as a duplicate of b/143683687.

Correction: b/143091227

Must it be in onCreate?

I'm doing this in onResume instead of onCreate so that the prompt shows up when the user comes back to my app.