我的应用程序不能将天气信息添加到TextView (JSON)

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

// 使用HttpURLConnection发送GET请求获取JSON数据
URL url = new URL("http://api.weather.com/...");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");

// 读取JSON数据
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
StringBuilder response = new StringBuilder();
while ((line = reader.readLine()) != null) {
    response.append(line);
}
reader.close();

// 解析JSON数据
JSONObject json = new JSONObject(response.toString());
String weather = json.getString("weather");

// 将天气信息设置到TextView
TextView textView = findViewById(R.id.textView);
textView.setText(weather);