如何计算相同的json值并将其显示在textview中？

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

// 获取JSON数据并解析
String jsonString = "{\"data\": [{\"name\": \"John\", \"age\": 25}, {\"name\": \"Jane\", \"age\": 30}, {\"name\": \"John\", \"age\": 35}]}";
try {
    JSONObject jsonObject = new JSONObject(jsonString);
    JSONArray dataArray = jsonObject.getJSONArray("data");

    // 计算相同的值
    HashMap<String, Integer> nameCountMap = new HashMap<>();
    for (int i = 0; i < dataArray.length(); i++) {
        JSONObject dataObject = dataArray.getJSONObject(i);
        String name = dataObject.getString("name");
        if (nameCountMap.containsKey(name)) {
            int count = nameCountMap.get(name);
            nameCountMap.put(name, count + 1);
        } else {
            nameCountMap.put(name, 1);
        }
    }

    // 将计算结果显示在TextView中
    TextView textView = findViewById(R.id.textView);
    StringBuilder resultBuilder = new StringBuilder();
    for (Map.Entry<String, Integer> entry : nameCountMap.entrySet()) {
        String name = entry.getKey();
        int count = entry.getValue();
        resultBuilder.append(name).append(": ").append(count).append("\n");
    }
    textView.setText(resultBuilder.toString());

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