Description

When using a PillarboxMediaController the all Window.uuid are equals to 0 during the source resolution, that's why the Showcase MediaSessionService that using that kind of player crashs when adding more than 1 item. The LazyRow needs to have unique key for each media item.

Changes made

• Add an ui extension to get a unique key, Player.getUniqueKeyForMediaItemIndex to pillarbox-ui module

LazyColumn {
        itemsIndexed(
            items = mediaItems,
            key = { index, item -> player.getUniqueKeyForMediaItemIndex(index) },
        ) { index, mediaItem ->
            MediaItemView(....)
        }
    }

Editing the playlist by dragging items won't work like with other showcases.

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).