Progress Dialog for AsyncTask - Android

Question

I\'m trying to show a progress dialog while the twitter feed is loading up...However the progress dialog remains on screen when the twitter feed appears. Any help is much ap

Answer 1

The methods onPreExecute(), doInBackground() and onPostExecute() of AsyncTask are used for purpose that you mentioned -

public class MainActivity extends ListActivity {

    final static String twitterScreenName = "CFABUK";
    final static String TAG = "MainActivity";
    private AsyncTask> tat;
    boolean done;
    Context context;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        done=false;
        context = this;
        new NetworkTask().execute();
    }
}


class NetworkTask extends AsyncTask 
{

  Context ctx = context ;

  @Override
  protected void onPreExecute() 
  {
    super.onPreExecute();
    pDialog = new ProgressDialog(getActivity());
    pDialog.setMessage("Working ...");
    pDialog.setIndeterminate(false);
    pDialog.setCancelable(false);
    pDialog.show();
}

@Override
protected String doInBackground(String... args) 
{

    //Do your background work here and pass the value to onPostExecute

    AndroidNetworkUtility androidNetworkUtility = new AndroidNetworkUtility();

    if (androidNetworkUtility.isConnected(ctx)) {
            TwitterAsyncTask syn=new TwitterAsyncTask();
            syn.execute(twitterScreenName,this);

             while(done)
             {
                if(!(syn.getStatus()==AsyncTask.Status.RUNNING)) 
                {
                   done=true;
                }
                else 
                {
                   Log.v(TAG, "Network not Available!");
                } 
             }

    return done + "";

}

protected void onPostExecute(String result) 
{

   //Do something with result and close the progress dialog

   pDialog.dismiss();

}