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    <p>You never called onProgressUpdate during your doInBackGround(...); Please note that running multipule instance of AsyncTask is a <a href="https://stackoverflow.com/questions/6645203/android-asynctask-avoid-multiple-instances-running">bad idea</a>. Here is what I suggest:</p> <p>if (isSyncSuccess) {</p> <pre><code> SetConstant.IMAGE_EXIST = 1; pDialog = new ProgressDialog(GalleryScreen.this); pDialog.setMessage("Downloading file. Please wait..."); pDialog.setIndeterminate(false); pDialog.setProgress(0); pDialog.setMax(contentId.length); pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); pDialog.setCancelable(true); new DownloadFile().execute(); } } private class DownloadFiles extends AsyncTask&lt;String, Integer, String&gt; { @Override protected String doInBackground(String... sUrl){ Bitmap bm; InputStream in; if (contentId.length&gt;0){ for (int i=0;i&lt;contentId.length;i++){ if(helper.databaseChecking(useremail, contentId[i])){ contentdownload = i; SetConstant.CONTENT_ID = contentId[i]; String URL = SetConstant.URL_DOWNLOAD_CONTENT+contentId[i]; //YOUR INTRESTING LOOP HERE. publishProgress(30); //SOME INTRESTING NUMBER FOR PROGRESS UPDATE } } try{ in = new java.net.URL(sUrl[0]).openStream(); bm = BitmapFactory.decodeStream(new PatchInputStream(in)); File storage = new File(Environment.getExternalStorageDirectory() + File.separator + "/Image/"); Log.i(TAG,"storage:" +storage); Log.i(TAG,"storage:" +storage.getAbsolutePath()); if(!storage.exists()){ storage.mkdirs(); } String FileName = "/"+SetConstant.CONTENT_ID+".jpg"; FileOutputStream fos = new FileOutputStream(storage + FileName); bm.compress(Bitmap.CompressFormat.JPEG, 85, fos); String filepath = storage + FileName; File filecheck = new File (filepath); long fileSize = filecheck.length(); fos.flush(); fos.close(); } catch(IOException e1){ e1.printStackTrace(); } return null; } @Override protected void onPreExecute() { super.onPreExecute(); pDialog.show(); } @Override protected void onProgressUpdate(Integer... progress) { super.onProgressUpdate(progress); pDialog.setProgress(progress[0]); } protected void onPostExecute(String result) { super.onPostExecute(result); pDialog.dismiss(); } } </code></pre> <p>Of course this code don't run and you need to fix the scopes. but what I am trying to suggest is your loop should be in doInBackGround(...), you should only have 1 instance of AsyncTask at given time for this case, and call the onProgressUpdate();</p>
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    1. COThanks for the explanation and answer. Will try this soon, update you about this as soon as I tried it out.
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    2. COIt worked. Thank you for the answer, I edited the question. I got another thing wanna ask about. Is it okay if you take a look there?
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