在安卓系统中获取互联网上的TimeZone

<uses-permission android:name="android.permission.INTERNET" />

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.TimeZone;

public class MainActivity extends AppCompatActivity {
    private static final String TIMEZONE_API_URL = "http://worldtimeapi.org/api/ip";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 在后台线程中获取互联网上的TimeZone
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    // 创建URL对象
                    URL url = new URL(TIMEZONE_API_URL);

                    // 创建HttpURLConnection对象并发送GET请求
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod("GET");

                    // 获取响应码
                    int responseCode = connection.getResponseCode();

                    // 如果响应码为200，表示请求成功
                    if (responseCode == HttpURLConnection.HTTP_OK) {
                        // 读取响应数据
                        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                        StringBuilder response = new StringBuilder();
                        String line;
                        while ((line = reader.readLine()) != null) {
                            response.append(line);
                        }
                        reader.close();

                        // 解析JSON数据，获取TimeZone
                        JSONObject jsonObject = new JSONObject(response.toString());
                        String timeZone = jsonObject.getString("timezone");

                        // 在UI线程中更新UI
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                // 使用获取到的TimeZone进行相关操作
                                TimeZone timeZone = TimeZone.getTimeZone(timeZone);
                                // ...
                            }
                        });
                    } else {
                        // 请求失败，处理错误情况
                    }

                    // 断开连接
                    connection.disconnect();
                } catch (IOException | JSONException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
}