clearThenAddMediaItem
Clears the current playlist and then adds a single media item.
This method is equivalent to calling clearMediaItems() followed by addMediaItem(item).
Parameters
item
The media item to add to the playlist.
Clears the current playlist and then adds a single media item at a specific index.
This method is equivalent to calling clearMediaItems() followed by addMediaItem(index, item).
Parameters
index
The index at which to insert the media item in the playlist.
item
The media item to add.