[Android][Modal] Fixed crash caused by accessing a disposed Java peer when comparing fragments in OnFragmentDestroyed

[Vetle444]

Description of Change

Description of Change

Guard against disposed Java peer objects in FragmentLifeCycleCallback.OnFragmentDestroyed on Android to prevent a crash when comparing dialog fragments.

Problem

On Android, a crash occurs with Cannot access disposed object with JniIdentityHashCode=... when a modal is dismissed. The OnFragmentDestroyed callback retrieves a DialogFragment from a WeakReference stack and calls Fragment.Equals() — a JNI-bridged method. By the time this callback fires, the underlying Java peer can already be disposed while the managed .NET wrapper is still alive, causing AssertSelf to throw.

Solution

• Check Handle != IntPtr.Zero on both fragment references before calling .Equals(), since Handle becomes zero when the Java peer is disposed
• Catch ObjectDisposedException as a safety net for any remaining race window, popping the stack since the fragment is destroyed regardless

Platform Differences

• Android only — this callback and fragment lifecycle stack are Android-specific

[Copilot]

Pull request overview

This PR addresses an Android modal crash caused by invoking JNI-backed fragment comparisons (Fragment.Equals) after the underlying Java peer has been disposed, by adding guard checks and a safety-net exception handler in OnFragmentDestroyed.

Changes:

• Add Handle != IntPtr.Zero checks before comparing DialogFragment instances in OnFragmentDestroyed.
• Catch ObjectDisposedException during fragment comparison and pop the tracked fragment reference.
• Add a patch entry to CHANGELOG.md for version 55.2.3.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/library/DIPS.Mobile.UI/API/Library/Android/FragmentLifeCycleCallback.cs	Adds disposal guards/exception handling around fragment comparison to prevent JNI disposed-peer crashes when dismissing modals.
CHANGELOG.md	Adds a patch release entry documenting the Android modal crash fix.

[Copilot]

@Vetle444 I've opened a new pull request, #811, to work on those changes. Once the pull request is ready, I'll request review from you.

[GovermanGambo]

Alternatively, you can check dialogFragment.PeerReference.IsValid, which is the condition that causes the exception internally