android - AsyncTask: where does the return value of doInBackground() go? -

when calling asynctask<integer,integer,boolean>, return value of:

protected boolean doinbackground(integer... params)?

usually start asynctask new asynctaskclassname().execute(param1,param2......); doesn't appear return value.

where can return value of doinbackground() found?

the value available in onpostexecute may want override in order work result.

here example code snippet google's docs:

 private class downloadfilestask extends asynctask<url, integer, long> {       protected long doinbackground(url... urls) {           int count = urls.length;           long totalsize = 0;           (int = 0; < count; i++) {               totalsize += downloader.downloadfile(urls[i]);               publishprogress((int) ((i / (float) count) * 100));           }           return totalsize;       }        protected void onprogressupdate(integer... progress) {           setprogresspercent(progress[0]);       }        protected void onpostexecute(long result) {           showdialog("downloaded " + result + " bytes");       }  }