Android : Android RecyclerView inside Fragment is not updating Loader content

I have Fragment and it uses RecyclerView Adapter with LoaderManager to list items. RecyclerView i use is from this address. I've implemented LoaderManager from Fragment and game context of its Activity to RecyclerView.

When i add new item to list, it does not refresh list and show new one in list. I use same Adapter and structure on another activity and it works good. But here i use RecyclerView with Loader class inside Fragment but it does not refresh list when i add item, instead i have to go back(finish fragment) and enter again. 1) What might be problem ? 2) Is there any way to implement LoaderManager class inside activity and load data to RecyclerView of Fragment?