Question

When my Application starts, It does a lot of scanning; traversing through the root folder to find some particular folders and then it scans for video files. The problem is that I get a blank screen for approximately 4 to 5 seconds at the start of the application. I wanted to display progress bar but it seems that the application doesn’t wait for the progress bar to appear; rather it continues going into the time-consuming traversing loops and after that it displays the progress bar.. Can someone give an example or a suggestion.. I have an idea that AsynTask may help here but I am looking for a certain example..

Thanks all.

Answer 1

private class xyz extends AsyncTask<Void, Void, Void> {
    private final ProgressDialog dialog = new ProgressDialog(tranning.this);

    @Override
    protected void onPreExecute() {
        this.dialog.setMessage("Please Wait...");
        this.dialog.show();
        // put your code which preload with processDialog  
    }


    @Override
    protected Void doInBackground(Void... arg0) {
        // put your code here
        return null;
    }

    @Override
    protected void onPostExecute(final Void unused) {
        if (this.dialog.isShowing()) {
          this.dialog.dismiss();

        }   
    }
}

and use this in main ::

new xyz().execute();