问安卓:如何解决点击TabWidget后响应慢的问题

EN

/** Inner class for implementing progress bar before fetching data **/
    private class SomeTask extends AsyncTask<Void, Void, Integer> 
    {
        private ProgressDialog Dialog = new ProgressDialog(yourActivityClass.this);
        @Override
        protected void onPreExecute()
        {

            Dialog.setMessage("loading...");
            Dialog.show();
        }

        @Override
        protected Integer doInBackground(Void... params) 
        {
            //Task for doing something 
 //   get data from sql server and then display in listview
            return 0;
        }

        @Override
        protected void onPostExecute(Integer result)
            {

            if(result==0)
            {
//do some thing if your list completed
            }

    // after completed finished the progressbar
            Dialog.dismiss();
        }

    }