Question

Here is the code im trying to call inside onCreate()

        _t = new TheThread(this);
        pd = new ProgressDialog(this);
        pd.setMessage("Trip Detection ..");
        pd.show();
        _t.start();
        while(_t.isAlive()){
            //DO NOTHING..WIAITING TILL MAIN THREAD FISHIN
        }
        printToScreen();
        pd.dismiss();          

printToScreen() updates a list view. The content of the list view is updated using the tread _t. But when i call this method i dont see any of the “waiting” message coming up. Phone freezes as it used to be before (when i was not running content on a thread). Any suggestions ?

Answer 1

Below Snippet will help you.

progressDialog.show();

    new Thread()
      {
        public void run()
         {
             //do async operations here

             handler.sendEmptyMessage(0);
         } 
      }.start();

    Handler handler = new Handler()
            {

                @Override
                public void handleMessage(Message msg)
                {
                    progressDialog.dismiss();
                    super.handleMessage(msg);
                }

            };