android


Creating endless scrolling in RecyclerView like modern google calendar app has


I would like to make app with one fragment very similar to plan section in modern google calendar app (https://i.stack.imgur.com/wnREL.png).
How can I achieve endless scrolling in both direction, loading items asyncly, like google calendar does? I tried using RecyclerView but I don't know how to separate items (in google cal events) to sections like day, week or month and how to achieve endless up scrolling.
I also tried to find google calendar source, but I found only this git repo https://android.googlesource.com/platform/packages/apps/Calendar, that's only built-in android calendar app source, not the modern one with material design. So I suppose that it isn't open source, is it?
There are actually 3 ways to achieve this, one of which is like the library linked earlier:
When you encounter the end of the list, start loading more and show a loading indicator
or
Load items in advance when the user scrolls close enough to the end, show a loading indicator if the user reaches the end too fast
or (my favorite)
Generate X amount of dummy (empty) list items in the end and replace them with the loaded items when the user has scrolled enough, show that they are loading while they're in the dummy state - this method enables a "true" endless scroll

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