Question

I have an android application which in its main activity, data are adapted from sqlite db and shown in list view. I tried to use Progress dialog to show ‘loading’ message to user during fetching data from db. But the dialog does not disappear.

Here is the code :

public class BirthdayAlarmActivity extends ListActivity {

    List<BirthdayContact> listofAvailableBirthdays;

    ProgressDialog pDialog;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.birthday_list);


        listofAvailableBirthdays=new ArrayList<BirthdayContact>();

        ReinitializeList();
}

@Override
protected void onResume() {

        ReinitializeList();
}


void ReinitializeList()
    {

        new LoadListView().execute();

            if(listofAvailableBirthdays.size()>0)
        {
            //get ready the adapter
            ArrayAdapter<BirthdayContact> ara=
                     new                 MyArrayAdapter(BirthdayAlarmActivity.this,listofAvailableBirthdays);

            //set the adapter
            setListAdapter(ara);
             }

}

public class LoadListView extends AsyncTask<Void, Void, Void>
{

        //ProgressDialog pDialog;

        @Override
        protected void onPreExecute() {
            // Showing progress dialog before sending http request
            pDialog = new ProgressDialog(
                    BirthdayAlarmActivity.this);
            pDialog.setMessage("Please wait..");
            pDialog.setIndeterminate(true);
            pDialog.setCancelable(false);
            pDialog.show();
        }

        protected Void doInBackground(Void... unused) {
            runOnUiThread(new Runnable() {
                public void run() {
                    // increment current page
                    listofAvailableBirthdays.clear();

                    listofAvailableBirthdays=BirthdayHandler.GetTenBirthDays(BirthdayAlarmActivity.this);
                }
            });
            return (null);
        }       

        protected void onPostExecute(Void unused) {
            // closing progress dialog
            pDialog.dismiss();
        }

    }

Answer 1

I’m not familiar with the technique you’re using, but I’ll share what works for me:

final ProgressDialog progress = ProgressDialog.show(activity, "",
    activity.getString(R.string.please_wait), true);

new Thread(new Runnable() {
  @Override
  public void run()
  {
    try {
      --- network activity to retrieve information ---
    }
    finally {
      activity.runOnUiThread(new Runnable() {
        @Override
        public void run()
        {
          if ((progress != null) && progress.isShowing())
            progress.dismiss();
        }
      });
    }
  }
}).start();