[Android] Properly Resolve File Paths in FilePicker When MANAGE_EXTERNAL_STORAGE is Granted

[bhavanesh2001]

Issue Summary

The FilePicker API for Android currently does not properly handle file access when MANAGE_EXTERNAL_STORAGE is granted. This leads to an incorrect behavior where the absolute file path is not resolved, and instead, the FilePicker returns a cached copy.

Root Cause

• The issue occurs because EnsurePhysicalPath always forces requireExtendedAccess = true , which prevents ResolveDocumentPath from executing when Scoped Storage is enforced on Android 10+ (API 29+).
• Currently, we do not consider if MANAGE_EXTERNAL_STORAGE is granted, meaning it doesn't attempt to resolve the path even when the permission is granted.

Fix

• Pass requireExtendedAccess = false when MANAGE_EXTERNAL_STORAGE is granted to allow ResolveDocumentPath to execute.
• If the path still cannot be resolved, it will automatically fall back to caching the file as we currently do.

Current Behaviour:

current_behaviour.mp4

After Fix

after_fix.mp4

Issues Fixed

Fixes #6015

[dotnet-policy-service]

Hey there @bhavanesh2001! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[jfversluis]

See comment

[jfversluis]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[KieranDevvs]

@jfversluis can this be backported to .NET 8?

[jfversluis]

@KieranDevvs that is highly unlikely since .NET MAUI built against .NET 8 will go out of support in a few months: https://dotnet.microsoft.com/platform/support/policy/maui