Question

I have created one AsyncTask class for fetching data from background (Accessing database).

In onPreExecute() method, I create one progress dialog

        try {
            progressDialog = ProgressDialog.show(context, "",
                    "Please wait...", true);
            progressDialog.setIndeterminate(true);

        } catch (final Throwable th) {
            // TODO
        }

And in onpostExecute()

        protected void onPostExecute(Boolean result) {

            pinPoint();
            progressDialog.dismiss();
        }

My updated class,

@Override
        protected Boolean doInBackground(Void... params) {
            clust = getPinPointClusters();
            runOnUiThread(new Runnable() {
                public void run() {
                    plotClusters(clust);
                }
            });

            return true;
        }

        @Override
        protected void onPostExecute(Boolean result) {

            progressDialog.dismiss();
        }

Here pinpoint() method will get some data from server and pin the points in map.
But The progressBar in ProgressDialog is not animating…
Please provide me the best way…

Thanks

Answer 1

I would suggest you to put the pinPoint() method in the doInBackground method and the lines of the method pinPoint() which are affecting the UI can be kept under this method::

activityname.runOnUiThread(new Runnable() {
    @Override
        public void run() 
         {
        // Put here the line which is changing the UI.          
     }
});  

Example : When any line attempts to change the UI in the doInBackground , do this way:

 protected Boolean doInBackground(final String... args) 
   {
     .
     .
     .
     .     
    activityname.runOnUiThread(new Runnable() {
            @Override
                public void run() 
                 {
                   eg. linearLayout.addView(ChildView);         
             }
        });
     .
     .
     . 
   }

Now,you have to just dismiss the ProgressDialog from the onPostExecute() method.