改造没有从api获取json数据

Question

我使用json从api获取retrofit数据，我使用改造教程正确实现了它，但我不知道它为什么不提取数据。 这是我的主要课程：

    List<noti_sec> noti_list;
    ImageView down_img;
    TextView heading_txt;

    String sessionId ;
    String userId;
    Handler handler;

    private static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_cinsio_notif);


        final RecyclerView  recyclerView = (RecyclerView) findViewById(R.id.noti_recyle);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));


        heading_txt =(TextView) findViewById(R.id.heading_txt);
        down_img = (ImageView) findViewById(R.id.down_img);

        heading_txt.setText("Notifications");

        down_img.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(CinsioNotif.this, CinsioMain.class);
                //startActivity(i);
                finish();
                overridePendingTransition(R.anim.slide_in_down,R.anim.slide_out_down);
            }
        });


        // recyclerView.setLayoutManager(new LinearLayoutManager(this));


        SharedPreferences preferences = getSharedPreferences("USER", MODE_PRIVATE);
        sessionId = preferences.getString("session", "");
        userId=preferences.getString("id","");




        notiIterface apiService =
                ApiClient.getClient().create(notiIterface.class);



        Call<full_noti_sec> call = apiService.getNotification(userId,"",sessionId);
        call.enqueue(new Callback<full_noti_sec>() {
            @Override
            public void onResponse(Call<full_noti_sec> call, Response<full_noti_sec> response) {
                List<noti_sec> notif = response.body().getData();

                Log.d(TAG, "Number of notification received: " + notif.size());
                recyclerView.setAdapter(new noti_adapter(notif,getApplicationContext(),R.layout.noti_msg_screen));
            }

            @Override
            public void onFailure(Call<full_noti_sec> call, Throwable t) {

            }
        });


    }

我的adpater课程：

    List<noti_sec> noti_list;
    private Context context;
    private int rowLayout;
    //Constructor of this class

    public noti_adapter(List<noti_sec> noti_list, Context context,int rowLayout){
        super();
        //Getting all superheroes
        this.noti_list = noti_list;
        this.context = context;
        this.rowLayout = rowLayout;
    }


    public static class notiViewHolder extends RecyclerView.ViewHolder {
        CircleImageView profile_pic;
        TextView name;
        TextView about_noti;
        TextView noti_time;
        ImageView from;


        public notiViewHolder(View v) {
            super(v);




            profile_pic = (CircleImageView) v.findViewById(R.id.profile_image);
            name = (TextView) v.findViewById(R.id.name);
            about_noti = (TextView) v.findViewById(R.id.notif_about);
            noti_time = (TextView) v.findViewById(R.id.noti_time);
            from = (ImageView) v.findViewById(R.id.msg_img);
        }
    }



    @Override
    public noti_adapter.notiViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(rowLayout, parent, false);
        return new notiViewHolder(view);
    }

    @Override
    public void onBindViewHolder(notiViewHolder holder, final int position) {

        ;
        SharedPreferences preferences = context.getSharedPreferences("USER", 0);
        String fname = preferences.getString("firstname", "");
        String lname = preferences.getString("lastname", "");
        String uname = preferences.getString("username", "");
        String img = preferences.getString("imgname", "");
        String id = preferences.getString("id", "");

        String image = "http://chikoop.com/api/uploads/" + id + "/" + noti_list.get(position).getImgname();


        holder.profile_pic.setImageResource(R.drawable.border_frame1);
        holder.name.setText(noti_list.get(position).getUsername());
        holder.about_noti.setText(noti_list.get(position).getNoti_msg());

        Picasso.with(context)
                .load(image)
                .into(holder.from);


        //holder.from.setImageResource(noti_list.get(position).getFor_image());
    }


    @Override
    public int getItemCount() {
        return noti_list.size();
    }

我的界面类：

public interface notiIterface {
    @GET("user/get_notifications")
    Call<full_noti_sec> getNotification(@Query("userid") String userid,@Query("notification_id") String notiid, @Query("session") String apiKey);
}

我尝试了一切，但我的布局没有显示任何内容。会话和userID都是正确的。高级中的Thanxx