Question

I am making a chat window there are two method one for sending message and one for receiving message.I want when i click on send button the method call and send message to server and a background thread create if there is any response message then add that message to the list.how can i do this?

I want if there is any response message then response message call a thread that check if there is any message receive then add this to listview if not then add nothing to the list.

can anyone help me?

Answer 1

//onCreate
new BackGroundLoginTask().execute();


//async task

public class performBackgroundTask extends AsyncTask < Void, Void, Void >  
    {
      private ProgressDialog Dialog = new ProgressDialog(PlacesList.this);

      protected void onPreExecute() 
      {

             Dialog.setMessage("Downloading");
             Dialog.show();
      }

      protected Void doInBackground(Void... params) 
      {
         // write here the code to download  or to perform any background task.


         //perform background task
            return null;
    }

      protected void onPostExecute(Void unused) 
      {

          listview.setAdapter(new PlacesAdapter());
          Dialog.dismiss();  

      }

    }