Question

In my application , I have a listview and each item has a button. If user clicks the button ,i want to execute some http connection. So i use AsyncTask in the Adapter class. Now the problem is progress dialog is not showing.

private class MyClass extends AsyncTask<Void, Long, Boolean> {
        private Context context;
        private ServerCall call = new ServerCall();
        private ProgressDialog progressDialog1;

        public MyClass(Context context) {
            this.context = context;
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            try {
                progressDialog1 = ProgressDialog.show(context, "",
                        "Please wait...", true);
                progressDialog1.setIndeterminate(true);

            } catch (final Throwable th) {

            }

        }

        @Override
        protected void onProgressUpdate(Long... values) {

            super.onProgressUpdate(values);
        }

        @Override
        protected Boolean doInBackground(Void... params) {
            //some tasks

            return true;
        }

        @Override
        protected void onPostExecute(Boolean result) {
            if (mode.equalsIgnoreCase("History")) {

                Intent order = new Intent(context, ActicityA.class);
                order.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(order);

            } else {
                Intent order = new Intent(context, ActivityB.class);
                order.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(order);
            }

        }
    }

Answer 1

Its true that ProgressDialog.show() method returns a ProgressDialog obect, but its better to first create an object of ProgressDialog like:

ProgressDialog progressDialog1 = new ProgressDialog();

and then

progressDialog1 = ProgressDialog.show(context, "",
                        "Please wait...", true);

And also, try to finish the progressDialog1 in onPostExecute() by calling its dismiss() method.