[MS-1238] Crash fix: no longer accessing views when Fragment is destroyed

[alexandr-simprints]

JIRA ticket
Will be released in: 2025.4.0

Root cause analysis (for bugfixes only)

First known affected version: 2025.4.0

In OCR preprocessing function, the binding reference may be accessed from the background thread when Fragment has already been destroyed. This leads to run-time crashes in rare cases.

Notable changes

• Moving OCR preprocessing to a single preProcessImageAndRunOcr function
• Returning reference for preprocessing execution thread
• Cancelling preprocessing scope in onDestroyView, since preprocessing requires access to views for a proper image crop
• Preprocessing now checks if the coroutine scope is still active

Testing guidance

• Describe how the reviewers can verify that issue is fixed

Additional work checklist

• Effect on other features and security has been considered

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud