How To Paginate Firebase From The Last Items To The First?

I am trying to get firebase pagination working but I want the newest items first and then the ones slightly older, I tried to work with this but cannot seem to get new values, keep

Solution 1:

Solution 1

While setting the values for projects you have to set one more additional property as timeStump.

projects.setTimeStump(System.currentTimeMillis());

then you can query like this

Query query=myRef.orderByChild("timeStump").limitToLast(50);

Solution 2

While setting projects you can set .priority variable of firebase as

item.setWithPriority(yourObject, 0 - Date.now());

and query it like

Query query=myRef.child('projects').startAt().limit(20);

Solution 2:

The offset had to be the same key used for orderByChild - that is why it did not work, so changed this endAt(offSet.get("first")) value of the HashMap used to viewCount