backFlutterIntentService.java

// ... import 생략

public class MyIntentService extends IntentService {

    public MyIntentService() {
        super("MyIntentService");
    }

    @Override
        protected void onHandleIntent(Intent intent) {
            ResultReceiver receiver = intent.getParcelableExtra("INTENT_KEY_RECEIVER");
            Timer m = new Timer();
            TimerTask mt = new TimerTask() {
                @Override
                public void run() {
                    URL url = null;
                    Log.d("DOY","START!");
                    try {
                        Log.d("DOY","START@@");
                        url = new URL("http://127.0.0.1:3003/");
                        HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
                        BufferedReader reader = new BufferedReader((new InputStreamReader(httpConn.getInputStream(), "UTF-8")));
                        String resBodyData = reader.readLine();
                        int statusCode = httpConn.getResponseCode();
                        Log.d("DOY", resBodyData);
                        Log.d("DOY", String.valueOf(statusCode));
                        if(statusCode == 200){
                            Bundle b = new Bundle();
                            b.putString("key", resBodyData);
                            receiver.send(200, b);
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            };
            m.schedule(mt,10000);
        }
}