How to disable next/prev slot reservation with setMediaButtonPreferences?

[nift4]

I read the note that says setCustomLayout is deprecated, and tried to migrate to setMediaButtonPreferences, however the next/prev slot reservation appeared and I don't want it. It seems it's hardcoded if there is no next/prev button:

media/libraries/session/src/main/java/androidx/media3/session/MediaSessionLegacyStub.java

Lines 1269 to 1274 in 7cc1056

	legacyExtras.putBoolean(
	MediaConstants.EXTRAS_KEY_SLOT_RESERVATION_SEEK_TO_PREV,
	!CommandButton.containsButtonForSlot(customLayout, CommandButton.SLOT_BACK));
	legacyExtras.putBoolean(
	MediaConstants.EXTRAS_KEY_SLOT_RESERVATION_SEEK_TO_NEXT,
	!CommandButton.containsButtonForSlot(customLayout, CommandButton.SLOT_FORWARD));

Am I missing something, or is there no way to disable it?

[tonihei]

Could you provide more details on what you want to happen exactly? That is, which buttons do you want to show and where?

These slot reservation are used for compatibility with the older model only, and the idea is to just define your preferences in the new model without considering how exactly this compatibility layer is implemented. In theory, you shouldn't even need to know these constants exist or when they are set.

[nift4]

Well, it adds empty space to the notification if it's the first/last playlist item, and I want there to be no empty space.

I want the default prev/next buttons to show if it's possible to seek prev/next, and otherwise I want them to disappear without leaving empty space.

edit: I don't have custom buttons that go into these slots.

[tonihei]

I'm sorry, but I still don't understand what you expect to happen exactly. If you want the button to disappear without being replaced by a custom button and without leaving an empty space, what else should be shown in the UI space instead?

[nift4]

If I use setCustomLayout(), the seekbar gets bigger to fill the empty space.

[tonihei]

Thanks for the clarification, I wasn't aware this is happening. This is an unusual UI decision by the system media notification and I guess the desired outcome is always to fill the remaining space with the seek bar if there is nothing else to fill the gap.

Will see how we can best implement that, but I guess we can remove the flag if there is no other custom button that can accidentally fill the slot.