Question

I am New to Android, and have doing coding to satisfy my various needs.

I have a strange problem, in which i need to show Progress Dialog to cover up my background work of downloading images from Facebook and show them in a ListView after i get them in a Vector Object.

My Code Goes Like this :

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        facebook.authorize(this, new String[] { "email", "publish_checkins",
                "user_photos" },

        //new Dialog Listner code

        btnAlb = (Button) findViewById(R.id.btnAlb);
        logout = (Button) findViewById(R.id.logout);

        btnAlb.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {


    //**            Log.i("pDialog","Entry");
        pdialog = ProgressDialog.show(MainActivity.this, "Processing Data","Loading..");
    //this is not working !!
    //**            Log.i("pDialog","Exit");

                try {

    //Lot of JSON Parsing
                    pdialog.dismiss();

                    Intent intent = new Intent(MainActivity.this,AlbumHolder.class);

                    startActivity(intent);

                } catch (Exception e) {
                    e.printStackTrace();
                    pdialog.dismiss();
                }


            }
        });

}

So i have Logged the Start and End of ProgressDialog and expected the dialog to show up. but it didn’t. can somebody explain why?

I have also used a runOnUiThread() Thread, but it also yielded the same result.

Answer 1

You should use pdialog.dismiss(); when your task completed.For this problem you should use AsyncTask class. More Information Read This Tut.