How to implement list with infinite scrolling in both direction with LiveData

Question

I am trying to implement a list similar to "Schedule" view from Google calendar. Requirements are:

• The list should be infinitely scrollable in both vertical directions.
• The items should come from LiveData so the items can update themselves in the UI when they change in database.

I tried using Paging library, but it seems that:

• PositionalDataSource allows infinite scrolling only in one direction
• ItemKeyedDataSource does not use LiveData
• PageKeyedDataSource is not applicable because the database query is not based on paged keys

I could not ways to get around the three issues above. Can anybody help me implement this?