如何在android中从JSON请求中获取数据？

URL url = new URL("http://example.com/data.json");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");

int responseCode = connection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    StringBuilder response = new StringBuilder();
    String line;
    while ((line = reader.readLine()) != null) {
        response.append(line);
    }
    reader.close();

    // 在这里处理JSON数据
    String jsonData = response.toString();
    // ...
} else {
    // 处理请求失败的情况
}
connection.disconnect();

JSONObject jsonObject = new JSONObject(jsonData);
String name = jsonObject.getString("name");
int age = jsonObject.getInt("age");
JSONArray hobbies = jsonObject.getJSONArray("hobbies");
// ...

// 如果JSON数据是一个嵌套结构，可以继续使用JSONObject或JSONArray来解析
JSONObject address = jsonObject.getJSONObject("address");
String city = address.getString("city");
// ...