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OPTIMIST .KZ
Asked:2020-07-30 15:06:45 +0000 UTC2020-07-30 15:06:45 +0000 UTC

RecyclerView如何正确组织

  • 772

我在应用程序中使用它向片段输出json RecyclerView，此时我RecyclerView正在加载所有json，我该如何组织分阶段加载？

   JsonArrayRequest movieReq = new JsonArrayRequest(url,
            new Response.Listener<JSONArray>() {
                @Override
                public void onResponse(JSONArray response) {
                    Log.d(TAG, response.toString());
                    hidePDialog();

                    // Parsing json
                    for (int i = 0; i < response.length(); i++) {
                        try {

                            JSONObject obj = response.getJSONObject(i);
                            Person person = new Person();
                            Log.d("json",obj.getString("image"));
                            person.setId(obj.getString("id"));
                            person.setUrl(obj.getString("image"));
                            person.setName(obj.getString("name") + obj.getString("1"));
                            person.setNumberClient(obj.getString("number"));

                            person.setName2(obj.getString("name"));
                            person.setSurname(obj.getString("surname"));
                            person.setRegion(obj.getString("region"));
                            person.setSubject(obj.getString("1"));
                            names.add(person);

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }

                    }

                    // notifying list adapter about data changes
                    // so that it renders the list view with updated data
                    hidePDialog();
                    adapter.notifyDataSetChanged();

                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            VolleyLog.d(TAG, "Error: " + error.getMessage());
            hidePDialog();

        }
    });

这是我的适配器

public class MyPicassoAdapter extends RecyclerView.Adapter<MyHolder> {

    Context c;
    ArrayList<Person> persons;

    public MyPicassoAdapter(Context c, ArrayList<Person> persons) {
        this.c = c;
        this.persons = persons;
    }

    @Override
    public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.chat_items,parent,false);
        MyHolder holder=new MyHolder(v);
        return holder;
    }

    @Override
    public void onBindViewHolder(MyHolder holder, int position) {
        holder.nameTxt.setText(persons.get(position).getName());
        holder.id.setText(persons.get(position).getId());
        holder.img_url.setText(persons.get(position).getUrl());
        holder.region.setText(persons.get(position).getRegion());
        holder.subject.setText(persons.get(position).getSubject());
        holder.numClient.setText(persons.get(position).getNumberClient());
        holder.ns.setText(persons.get(position).getName2() + " " + persons.get(position).getSurname());


        PicassoClient.downloadImage(c, "http://www.developer92.16mb.com/mentor/public_html/images/"+persons.get(position).getUrl(), holder.img);
    }

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





    public interface ClickListener {
        void onClick(View view, int position);

        void onLongClick(View view, int position);
    }
android

1 个回答

  1. Best Answer

    方法一：

    在 RecyclerView 上挂一个滚动监听器，当它滚动到最后一个元素时，加载一条新数据。

    方法 2：

    @Override public void onViewAttachedToWindow(final ViewHolder holder) { super.onViewAttachedToWindow(holder); int layoutPosition = holder.getLayoutPosition(); }

    在适配器中，您可以获取新出现的列表项的位置。如果出现的元素的位置是最后一个，那么是时候加载新的一部分数据了

    • 3

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