AsyncTask - after execution, how to update view?

android, android-asynctask

Solution

If you want to update the view from async after complete process in then you can use

protected void onPostExecute(String result)
    {
        textView.setText(result);
    }

But if you want to update data while running background process then use. For ex...

protected Long doInBackground(URL... urls) {
         int count = urls.length;
         long totalSize = 0;
         for (int i = 0; i < count; i++) {
             totalSize += Downloader.downloadFile(urls[i]);
             publishProgress((int) ((i / (float) count) * 100));<------
         }
         return totalSize;
     }

     protected void onProgressUpdate(Integer... progress) {  <-------
         setProgressPercent(progress[0]);
     }

for more detail see this link Hope this will help you...!

Problem

In the onCreate() event of an Activity, I have started an AsyncTask to retrieve Product data from a database. After this has been completed successfully, how can I update the display? Metacode: ``` public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.venueviewbasic); (..) new GetProductDetails().execute(); class GetProductDetails extends AsyncTask<String, String, String> { protected String doInBackground(String... params) { // updating UI from Background Thread runOnUiThread(new Runnable() { public void run() { // Check for success tag int success; try { // Building Parameters List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("id", vid)); (.. retrieve and parse data and set new textview contents ..) ``` The textviews etc. don't get updated however.

Original source