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POUpdate progress bar in listview for multi files download
 

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    <p>How can we update a progress bar in ListView. When each progress bar is associated download of a file and which is done via AsyncTask.</p> <p>The feature will be:</p> <ol> <li>Each progress bar will be update with downloading process.</li> <li>When a file complete downloaded it will be save into sd card.</li> <li>It will be added it service(Running on the background.</li> <li>When one file downloaded it should show "Complete "(should not be remove form listview)</li> </ol> <p>I also used a database for downloading the file.The list also depends on the database vector. How can I implement it. I also tried but did not get solution.</p> <p>Below are the two screenshots to describe it in detail:</p> <p><img src="https://i.stack.imgur.com/k4ICg.png" alt="enter image description here"></p> <p>I also tried this code:</p> <pre><code>temp = databaseHandler.getAllNotifyNumber(); list_download = (ListView) findViewById(R.id.list_download); myCustomAdapter = new MyCustomAdapter(mContext); list_download.setAdapter(myCustomAdapter); myCustomAdapter.notifyDataSetChanged(); for (int index = 0; index &lt; temp.size(); index++) { String url = "http://upload.wikimedia.org/wikipedia/commons/0/05/Sna_large.png"; grabURL(url); } </code></pre> <p>This is AsyncTask mathod:</p> <pre><code> public void grabURL(String url) { new GrabURL().execute(url); } private class GrabURL extends AsyncTask&lt;String, Integer, String&gt; { protected String doInBackground(String... urls) { String filename = "MySampleFile.png"; File myFile = new File(directory, filename); try { URL url = new URL(urls[0]); URLConnection connection = url.openConnection(); connection.connect(); int fileSize = connection.getContentLength(); InputStream is = new BufferedInputStream(url.openStream()); OutputStream os = new FileOutputStream(myFile); byte data[] = new byte[1024]; long total = 0; int count; while ((count = is.read(data)) != -1) { total += count; publishProgress((int) (total * 100 / fileSize)); os.write(data, 0, count); } os.flush(); os.close(); is.close(); } catch (Exception e) { e.printStackTrace(); } return filename; } @Override protected void onProgressUpdate(Integer... progress) { // home_countprogress.setVisibility(View.VISIBLE); // home_countprogress.setText(String.valueOf(progress[0]) + "%"); // progressbar_horizontal.setProgress(progress[0]); myCustomAdapter.notifyDataSetChanged(); } @Override protected void onCancelled() { Toast toast = Toast.makeText(getBaseContext(), "Error connecting to Server", Toast.LENGTH_LONG); toast.setGravity(Gravity.TOP, 25, 400); toast.show(); } @Override protected void onPostExecute(String filename) { // progressbar_horizontal.setProgress(100); // home_countprogress.setVisibility(View.VISIBLE); } protected void onPreExecute() { // progressbar_horizontal.setVisibility(View.VISIBLE); // progressbar_horizontal.setProgress(0); // home_countprogress.setVisibility(View.VISIBLE); myCustomAdapter = new MyCustomAdapter(mContext); } } </code></pre>
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