java - android RecycleView 如何更快地加载内容？

Question

我正在使用带有 volley HTTP 库的 android 回收视图，但无法以适当的速度加载到 android 中。我在下面提交了一些示例代码。

RecyclerView subCategoryrecycleview;

subCategoryrecycleview = findViewById(R.id.subCategoryrecycleview);

subCategoryrecycleview.setLayoutManager(new GridLayoutManager(getContext(), Constant.GRIDCOLUMN));

private void GetCategory() {
    progressBar.setVisibility(View.VISIBLE);
    Map<String, String> params = new HashMap<>();
    params.put(Constant.CATEGORY_ID, cateId);

    categoryArrayList = new ArrayList<>();
    ApiConfig.RequestToVolley(new VolleyCallback() {
        @Override
        public void onSuccess(boolean result, String response) {
            if (result) {
                try {
                    JSONObject object = new JSONObject(response);
                    if (!object.getBoolean(Constant.ERROR)) {

                        JSONArray jsonArray = object.getJSONArray(Constant.DATA);
                        Gson gson = new Gson();
                        for (int i = 0; i < jsonArray.length(); i++) {
                            JSONObject jsonObject = jsonArray.getJSONObject(i);
                            Category category = new Category();
                            category.setId(jsonObject.getString(Constant.ID));
                            category.setCategory_id(jsonObject.getString(Constant.CATEGORY_ID));
                            category.setName(jsonObject.getString(Constant.NAME));
                            category.setSlug(jsonObject.getString(Constant.SLUG));
                            category.setSubtitle(jsonObject.getString(Constant.SUBTITLE));
                            category.setImage(jsonObject.getString(Constant.IMAGE));
                            categoryArrayList.add(category);
                        }
                        subCategoryrecycleview.setAdapter(new SubCategoryAdapter(getContext(), activity, categoryArrayList, R.layout.lyt_category_list, "sub_cate"));

                        progressBar.setVisibility(View.GONE);
                    } else {
                        txtnodata.setVisibility(View.VISIBLE);
                        progressBar.setVisibility(View.GONE);
                        txtnodata.setText(object.getString(Constant.MESSAGE));
                    }
                } catch (JSONException e) {
                    progressBar.setVisibility(View.GONE);
                    e.printStackTrace();
                }
            }
        }
    }, activity, Constant.SubcategoryUrl, params, false);
}

标签： javaandroidrecycleview