Parsing a Local JSON File from Assets Folder into a ListView

To parse a local JSON file from the assets folder into a ListView, follow these steps:

1. Load the JSON file using AssetManager:

   public static String AssetJSONFile(String filename, Context context) throws IOException {
       AssetManager manager = context.getAssets();
       InputStream file = manager.open(filename);
       byte[] formArray = new byte[file.available()];
       file.read(formArray);
       file.close();
   
       return new String(formArray);
   }

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2. Parse JSON using JSONObject and JSONArray:

   try {
       JSONObject obj = new JSONObject(jsonLocation);
       JSONArray m_jArry = obj.getJSONArray("formules");
       ArrayList<HashMap<String, String>> formList = new ArrayList<>();
       HashMap<String, String> m_li;
   
       for (int i = 0; i < m_jArry.length(); i++) {
           JSONObject jo_inside = m_jArry.getJSONObject(i);
           Log.d("Details-->", jo_inside.getString("formule"));
           String formula_value = jo_inside.getString("formule");
           String url_value = jo_inside.getString("url");
   
           //Add values to the ArrayList:
           m_li = new HashMap<>();
           m_li.put("formule", formula_value);
           m_li.put("url", url_value);
   
           formList.add(m_li);
       }
   } catch (JSONException e) {
       e.printStackTrace();
   }

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3. Display data in the ListView:

   • Create a custom adapter to bind data to the ListView.
   • Set the adapter to the ListView.

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