Question

I’m reading data from a file -> saving into DB -> Loading my Custom ListView by fetching data from DB.. While Fetching and Saving Data to DB i want to ProgressDialog to appear on my screen i tried these two type
but its not working

Type 1:

AlertDialog alertDialog = AlertDialog.show(CommoditiesListScreen.this, "Importing...");

// importing data from file
// Saving data to the DB

alertDialog.dismiss();

Type 2:

 UiDialog uiDialog = new UiDialog(CommoditiesListScreen.this);
 CommoditiesListScreen.this.runOnUiThread(uiDialog);
 AlertDialog alertDialog = AlertDialog.show(CommoditiesListScreen.this, "Importing...");
 alertDialog.getWindow().makeActive();


// importing data from file
// Saving data to the DB

uiDialog.stopDialog();
alertDialog.dismiss();

I tried in both ways it not working, ProgressDialog is not appearing on the screen, Anything else i’ve add or any modification i’ve to do in my cod eplease help me…

Note: When Forgot call dismiss(); in Type 1 Progress appears after ListView loaded and it spins for infinite time..

Answer 1

This is an ideal situation to use AsyncTask where you can show your dialog in the method onPreExecute(), perform your background operations (reading data from a file -> saving into DB ) in the method doInBackground() and load and display your list in the method onPostExecute().