android - Progress Dialog while starting new activity

Question

this button is shown on my start activity. After pressing it a new activity will be launched but this takes some time cause on initialization of that new activity some data is gathered from the Internet. This works half. The progress dialoge is shown but the progress wheel is not spinning.

Can somebody tell me why this happens?

  Button b4 = (Button) findViewById(R.id.Button01);
      b4.setOnClickListener(new View.OnClickListener() {
          public void onClick (View view) {    
           final ProgressDialog pd = ProgressDialog.show(pak.this, 
                         "", "Working..", true);

            new Thread(new Runnable(){
             public void run(){
              Intent intent = new Intent();
                 intent.setClassName("sxe.pak", "sxe.pak.List");
                 startActivity(intent);               
              pd.dismiss();
                }
           }).start();

          }
   });

thx

Answer 1

You need to show the progress dialog at the very start of your 2nd Activity, not your first one. And you need to do your data download work in an AsyncTask.

See my answer to this for more info:

Android SplashScreen