Recyclerview not call onCreateViewHolder
Another one is make sure you set layout manager to RecyclerView:
recycler.setLayoutManager(new LinearLayoutManager(this));
Your getItemCount method returns 0. So RecyclerView never tries to instantiate a view. Make it return something greater than 0.
for example
@Overridepublic int getItemCount() { return data.size();}
i forgot to add below line after i adding it worked for me
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));