Firebase Data Desc Sorting in Android

Question

I am storing data in Firebase storage.

Object Comment with attribute timestamp. When I push data from device to Firebase I\'m populating

Answer 1

I don't see any option to reverse the data. But One Brute way is to get the data.

List mList=new ArrayList();
public void onDataChange(DataSnapshot dataSnapshot) 
{
     mList.clear();
     for(DataSnapshot children: dataSnapshot.getChildren()){
        ModelClass modelClass=children.getValue(ModelClass.class);
        mList.add(modelClass);
     }
     Collections.reverse(mList);
     Adapter.notifyDataSetChanged();
}