How to send data to a website using httpPost, app crashes [duplicate]

Answer 1

You are doing a network related operation on the main ui thread. Use a thread or asynctask.

You will get NetworkOnMainThreadexception post honeycomb.

      new PostTask().execute();

AsyncTask

 class PostTask extends AsyncTask
 {
      @Override
      protected void doInbackground(Void... params)
      {
             // network related operation
             // do not update ui here
             // your http post here
      }
 } 

Also if you use threads or asynctask remember not to update ui in doInbackgroud.

You have this

      String msg = msgTextField.getText().toString();  
      // you can pass msg to asynctask doInbackground or to the asynctask contructor
      msgTextField.setText(""); 

Use onPreExecute and onPostExecute for ui updation.