Android NetworkOnMainThreadException [duplicate]

Answer 1

Android NetworkOnMainThreadException

Because you are performing n/w operations on main Ui thread

Either Use AsyncTask or Thread

AsyncTask: Docs

class myAsync extends AsyncTask<Void, Void, Void> {

        @Override
        protected void onPreExecute() {
            // TODO Auto-generated method stub
            super.onPreExecute();
        }

        @Override
        protected Void doInBackground(Void... params) {
            // TODO Auto-generated method stub

                // Keep in mind You Can't Update UI Part here

              JSONObject jObject = (new JSONParser(this))
                .getJSONObject("http://192.168.0.81:8080/content/test.json");
            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            // TODO Auto-generated method stub
            super.onPostExecute(result);
                // Handle/Update UI Part
        }
    }

Call it like

new myAsync().execute();

Answer 2

You are not allowed to do network operations with the Main (UI) thread.

There are several ways of using background threads. I would recommend using AsyncTask since it has a nice structure which is easy to understand.

http://developer.android.com/reference/android/os/AsyncTask.html

Here is an SO example also: AsyncTask Android example

Should be a lot more available on Google.