fix: media scan on download for Android 11+

[mykh-hailo]

Summary

Ensures downloaded files are scanned and indexed so they appear in the device’s media library (e.g. Photos/Gallery) on Android 11 (API 30) and above.

Closes: #16101

Problem

In triggerMediaScan(), Android 11+ was handled by only logging "SDK > 29, skipping media scan" and not performing any scan. As a result, files downloaded via the Nextcloud app were not added to the MediaStore and did not show up in system media apps.

Solution

Use MediaScannerConnection.scanFile() for devices with SDK ≥ 30 instead of skipping the scan. This API:

Works correctly on Android 10+
Takes the file path and optional MIME type
Uses a callback for success and failure
Logs scan completion or failure for debugging

Changes

• FileDataStorageManager.java

  • Added MediaScannerConnection import
  • Replaced the “skip” logic on Android 11+ with MediaScannerConnection.scanFile()
  • Passes the file’s MIME type when OCFile is available
  • Adds callback logging for scan success and failure

This PR was generated by Mykhailo. View the repository job log.

[mykh-hailo]

@alperozturk96 I am happy for my first contribution on nextcloud-android.
I'd appreciate it if you check and leave some comments on it.

cc @tobiasKaminsky

[alperozturk96]

Hello, thank you for the PR.

Could you clarify why we’re not using MediaScannerConnection.scanFile across all supported API levels? This approach should work consistently for all API versions we currently support.

Additionally, it would be helpful to include test coverage for this change. I suggest add the Context as a new parameter and providing an overloaded function so that existing callers do not need to be modified.

Please also consider adding a new Kotlin test class that verifies this behavior, including proper context injection for testing purposes.

[mykh-hailo]

Hi @alperozturk96 I update my code for your comments.
I'd appreciate it if you check it and provide any feedback.
Thank you.

[mykh-hailo]

Hi @alperozturk96 , @tobiasKaminsky
Cold you possibly let me know the ETA for the merge please?

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