Question

我想在onItemSelected微调器中使用JsonObjectRequest，当set item spinner得到json但JsonObjectRequest无效并且什么也不显示时，如何在onItemSelected中使用JsonObjectRequest？请帮帮我

我的代码

@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {


    JsonObjectRequest jsonObjectr = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {


            try {
                JSONArray jsonArray = response.getJSONArray("list");
                for (int i = 0; i < jsonArray.length(); i++) {
                    JSONObject jsonObject = (JSONObject) jsonArray.get(i);
                    int id = jsonObject.getInt("id");
                    int id_category = jsonObject.getInt("id_category");
                    int id_speaker = jsonObject.getInt("id_speaker");
                    String name = jsonObject.getString("name");
                    String image = jsonObject.getString("image");
                    String category_name = jsonObject.getString("category_name");
                    String speaker_name = jsonObject.getString("speaker_name");

                    Item_zakerin_any itemzakeran = new Item_zakerin_any(id, id_category, name, id_speaker, image, speaker_name, category_name);
                    list_zakeran_any.add(itemzakeran);
                    az = new adapter_zakeran_any(mcontext, list_zakeran_any);

                    rv.setAdapter(az);
                    hidepDialog();

                }


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

        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            hidepDialog();

        }
    });

    MySingleton.getInstance(getApplicationContext()).addToRequestQueue(jsonObjectr);
}

Answer 1

您正在循环中设置适配器。将其移出如：

try {
            JSONArray jsonArray = response.getJSONArray("list");
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject = (JSONObject) jsonArray.get(i);
                int id = jsonObject.getInt("id");
                int id_category = jsonObject.getInt("id_category");
                int id_speaker = jsonObject.getInt("id_speaker");
                String name = jsonObject.getString("name");
                String image = jsonObject.getString("image");
                String category_name = jsonObject.getString("category_name");
                String speaker_name = jsonObject.getString("speaker_name");

                Item_zakerin_any itemzakeran = new Item_zakerin_any(id, id_category, name, id_speaker, image, speaker_name, category_name);
                list_zakeran_any.add(itemzakeran);

            }

            az = new adapter_zakeran_any(mcontext, list_zakeran_any);
            rv.setAdapter(az);
            hidepDialog();

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

如果对话异常，则不要忘记隐藏对话框，以免它们被永久阻止。

JsonObjectRequest在onItemSelected微调器中不起作用

1 个答案: