FIAM does not dismiss on back gesture when android:enableOnBackInvokedCallback is set to true

[kk-777-1127]

• Android Studio version: Android Studio Meerkat | 2024.3.1 Canary
• Firebase Component: InAppMessaging
• Component version: Bom33.7.0

Expected behavior:
• The FIAM message should be dismissed when the back gesture is performed.

Observed behavior:
• The FIAM message is not dismissed when the back gesture is performed.

Steps to reproduce:

1.	Enable android:enableOnBackInvokedCallback in your app’s AndroidManifest.xml.
2.	Display a Firebase In-App Messaging (FIAM) message.
3.	Attempt to dismiss the FIAM message using the back gesture.

Relevant Code:

It seems the issue may be related to the BackButtonHandler implementation in the Firebase In-App Messaging SDK. Specifically, dispatchKeyEvent in BackButtonHandler might not be invoked when android:enableOnBackInvokedCallback is set to true, as the back gesture bypasses the traditional KeyEvent.KEYCODE_BACK handling.

firebase-android-sdk/firebase-inappmessaging-display/src/main/java/com/google/firebase/inappmessaging/display/internal/layout/util/BackButtonHandler.java

Line 23 in 377edcc

public class BackButtonHandler {

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[lehcar09]

Hi @kk-777-1127, thank you for reaching out. I was able to reproduce the issue. I'll raise this to our engineers and see what we can do here. I'll get back to you once I hear back from them. Thanks!

[kk-777-1127]

The FiamFrameLayout component does not have direct knowledge of the associated Activity. This makes it challenging to implement features that rely on Activity, such as supporting predictive back gestures using OnBackInvokedDispatcher (introduced in Android 13).