Android convert JSONObject to HashMap and display in ListView with SimpleAdapter

Question

I try to search converting JSONObject to HashMap but most of the results are for Java not Android. Hence, I hope someone can share if you have experien

Answer 1

You could do something like this:

ListView listView = (ListView) findViewById(R.id.listView);

// ...

@Override
public void onResponse(JSONObject response) {
    List> list = new ArrayList>();

    try {
        Iterator iterator = response.keys();

        while (iterator.hasNext()) {
            String key = iterator.next();
            String value = response.getString(key);

            HashMap map = new HashMap<>();
            map.put(KEY_ID, key);
            map.put(KEY_NAME, value);

            list.add(map);
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

    if(list.size() > 0) {
        String[] from = {KEY_ID, KEY_NAME};
        int[] to = {R.id.text_id, R.id.text_name};

        SimpleAdapter adapter = new SimpleAdapter(MainActivity.this, list,
            R.layout.list_item, from, to);

        listView.setAdapter(adapter);
    }
}