Error in HttpResponse/httpClient.execute

Question

I am new to Android and new to Stackoverflow!

I am just creating dummy app to learn http connection. while compiling i encountered an error in this line

HttpResponse getbackdata= http_client.execute(url_data);

I even searched in stackoverflow but mostly people out thr suggested to use Exception Handling to catch UnknownHostException . i did that. I dont know where i messed up with the code. It might be a minor error since i am beginner i will learn from it. Thanks in Advance.

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

        try {
            HttpClient http_client=new DefaultHttpClient();
            URI url=new URI("http://www.mysite.com");
            HttpGet url_data=new HttpGet(url);

            HttpResponse getbackdata= http_client.execute(url_data);

            InputStreamReader in =new InputStreamReader(getbackdata.getEntity().getContent());
            BufferedReader br = new BufferedReader(in);

            StringBuffer sb=new StringBuffer("");
            String info="";
            String nl=System.getProperty("line.separator");

            while((info=br.readLine())!=null){
                sb.append(info.toString()+nl);
            }
            br.close();
            TextView output=(TextView) findViewById(R.id.display_output);
            output.setText(sb.toString());
        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            Log.d("ARR_ERROR","UnknownHostException : "+e);
        }
         catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            Log.d("ARR_ERROR","ClientProtocolException : "+e);

        } catch (IOException e) {
            // TODO Auto-generated catch block
            Log.d("ARR_ERROR","IOException : "+e);
        }
         catch (URISyntaxException e) {
        // TODO Auto-generated catch block
        Log.d("ARR_ERROR","URISyntaxException : "+e);
    }


}

Answer 1

Let me guess, you are getting a NetworkOnMainThreadException, right? Use an AsyncTask for your network tasks. Don't do them on the UI thread.