Question

我正在开发一款应用程序，用于处理在该影院中运行的影院和电影。感谢Stack溢出，我已经成功解析了JSON文件！但我坚持在微调器上显示JSON ARRAY名称。

这是JSON文件。

{
 "Abirami": [                      //Theatre 1
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "Gautamiputra Satakarni - Telugu"
  },
  {
   "name": "Khaidi No. 150 - Telugu"
  }
 ],
 "AGS_OMR": [                      //Theatre 2
  {
   "name": "Gautamiputra Satakarni - Telugu"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  }
 ],
 "AGS_TNagar": [                    //Theatre 3
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  }
 ],
 "AGS_Villivakkam": [
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Khaidi No. 150 - Telugu"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  }
 ],
 "INOX_Arcot_Road": [
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "Dhuruvangal Pathinaaru - Tamil"
  },
  {
   "name": "Gautamiputra Satakarni - Telugu"
  },
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Khaidi No. 150 - Telugu"
  }
 ],
 "INOX_Citi_Centre": [
  {
   "name": "Dhuruvangal Pathinaaru - Tamil"
  },
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  }
 ],
 "LUXE": [
  {
   "name": "Dangal (Tamil) - Tamil"
  },
  {
   "name": "Dangal - Hindi"
  },
  {
   "name": "Live By Night - English"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Khaidi No. 150 - Telugu"
  },
  {
   "name": "Gautamiputra Satakarni - Telugu"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "Shatamanam Bhavati - Telugu"
  }
 ],
 "mayajaal": [
  {
   "name": "Khaidi No. 150 - Telugu"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "xXx: Return Of Xander Cage (3D Tamil) - Tamil"
  },
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "Kirik Party - Kannada"
  },
  {
   "name": "Dangal - Hindi"
  },
  {
   "name": "Shatamanam Bhavati - Telugu"
  },
  {
   "name": "Haraamkhor - Hindi"
  },
  {
   "name": "Gautamiputra Satakarni - Telugu"
  }
 ],
 "PVR_Ampa": [
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "Khaidi No. 150 - Telugu"
  },
  {
   "name": "Passengers (3D) - English"
  },
  {
   "name": "Gautamiputra Satakarni - Telugu"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Live By Night - English"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "Dangal - Hindi"
  },
  {
   "name": "Shatamanam Bhavati - Telugu"
  }
 ],
 "PVR_Velachery": [
  {
   "name": "Dhuruvangal Pathinaaru - Tamil"
  },
  {
   "name": "Khaidi No. 150 - Telugu"
  },
  {
   "name": "Bairavaa - Tamil"
  },
  {
   "name": "OK Jaanu - Hindi"
  },
  {
   "name": "Koditta Idangalai Nirappuga - Tamil"
  },
  {
   "name": "xXx: Return Of Xander Cage (3D) - English"
  },
  {
   "name": "Dangal - Hindi"
  }
 ]
}

如何在旋转器中仅显示剧院名称，如剧院1,2,3等？ JSON文件存在于Android Studio的Assets文件夹中。

编辑：从资产中解析JSON文件。

private ArrayList<String> getTheatres(String theatre_results) {
        JSONArray jsonArray = null;
        ArrayList<String> cList = new ArrayList<String>();
        try {
            InputStream is = getResources().getAssets().open(theatre_results);
            int size = is.available();
            byte[] data = new byte[size];
            is.read(data);
            is.close();
            String json = new String(data, "UTF-8");
            jsonArray = new JSONArray(json);
            if (jsonArray != null) {
                for (int i = 0; i < jsonArray.length(); i++) {
                    cList.add(jsonArray.getJSONObject(i).getString("name"));
                   System.out.println("value is "+cList.get(0));
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException je) {
            je.printStackTrace();
        }
        return cList;
    }

Answer 1

JSONObject rootJsonObject = new JSONObject(json);
Iterator iterator = rootJsonObject.keys();
   while(iterator.hasNext()){
    //this below key will be the names of your each theater, you may 
    //add it into a list to populate spinner
    String key = (String)iterator.next();
    JsonArray theaterArray = rootJsonObject.getJsonArray(key);
    }

将所有键添加到列表后，您可以填充该列表中的微调器。我建议你使用更好的方法，制作像这样的哈希图

HashMap<String, JsonArray> = new HashMap();

将所有数据添加到其中，使用hashmap键填充您的微调器，并选择任何微调器项目，您可以从针对该特定键的hashmap获取所有内部数据（影院阵列）。

Answer 2

尝试使用此代码获取所有影院名称

ArrayList<String> theaters = getTheaters(theatre_results);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(context,android.R.layout.simple_list_item_1,android.R.id.text1,theaters);
spinner.setAdapter(adapter);

private ArrayList<String> getTheatres(String theatre_results) {
        JSONObject jsonObj = null;
        try {
            InputStream is = getResources().getAssets().open(theatre_results);
            int size = is.available();
            byte[] data = new byte[size];
            is.read(data);
            is.close();
            String json = new String(data, "UTF-8");
            jsonObject = new JSONObject(json);
            return jsonObject.names();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException je) {
            je.printStackTrace();
        }
        return cList;
    }

使用此列表创建适配器并将其设置为微调器

如何在微调器中显示JSON数组名称？

2 个答案: