Automotive sample crashes on emulators that do not display group titles

[alx-jst]

Version

Media3 1.5.1

More version details

Modify the demo-session-automotive app to display group titles

1. Checkout release 1.5.1.
2. Open MediaItemTree.kt at line 100.
3. Modify the buildMediaItem method to add a group title as follows:

   .setExtras(Bundle().apply { putString(MediaConstants.EXTRAS_KEY_CONTENT_STYLE_GROUP_TITLE, "Group title") })

Alternatively, apply the attached set_group_title.patch file using Git.
set_group_title.patch

Devices that reproduce the issue

Any emulator that is not able to display group titles, including the following:

• Automotive (1408p landscape) emulator with Google Play API 34-ext9
• Automotive Distant Display emulator with Google Play API 33
• Automotive Large Portrait emulator API 33
• Automotive Ultrawide API emulator 34-ext9

Devices that do not reproduce the issue

Devices capable of displaying group titles:

• Automotive (1024p landscape) emulator API 32
• A couple real vehicles I could test so far

Reproducible in the demo app?

Yes

Reproduction steps

1. Launch the patched demo-session-automotive app on an Automotive emulator that does not support displaying group titles.
2. Navigate to a screen that displays grouped content and their titles (Home, Album Folder, Artist Folder, Genre Folder)
3. Scroll to the bottom of the content (list/grid).
4. Perform a navigation action, such as:
   • Clicking on a browsable item.
   • Switching tabs.
   • Pressing the back button.

The app crashes with the following exception:

java.lang.IndexOutOfBoundsException: toIndex = n

Where n corresponds to the total number of items in the list/grid + 1, regardless of the index of the item you've clicked on.

Expected result

The app should navigate to the requested content without crashing.

Actual result

Only when the content (list/grid) is scrolled to the end, any navigation interaction triggers an IndexOutOfBoundsException.
See stacktrace.txt.

Media

Not applicable

Bug Report

• You will email the zip file produced by adb bugreport to [email protected] after filing this issue.