相关疑难解决方法(0)

我尝试database从我的fragment onViewCreated方法中检索数据,我使用了FirebaseRecylerAdapter,如下所示

@Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        FirebaseRecyclerAdapter<AllUsers, AllUsersViewHolder> firebaseRecyclerAdapter;
    }

    public static class AllUsersViewHolder extends RecyclerView.ViewHolder {

        View view;

        public AllUsersViewHolder(View itemView) {
            super(itemView);
            view = itemView;
        }
    }

当我使用firebaseRecyclerAdapter = new FirebaseRecyclerAdapter它不会给我populateViewHolder方法只是给下面的方法

FirebaseRecyclerAdapter<AllUsers, AllUsersViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<AllUsers, AllUsersViewHolder>() {
            @Override
            protected void onBindViewHolder(AllUsersViewHolder holder, int position, AllUsers model) {

            }

            @Override
            public AllUsersViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                return null;
            } …