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    <p>There are some correction that you need to make in the <code>doInBackground()</code>. But before that a small detailing about the <code>AsyncTask</code>. </p> <p><code>AsyncTask</code> is used when you have any non-UI back ground activity to perform. The function <code>onPreExecute()</code> is used to show any UI action (in most cases its showing of a dialog) before you enter the background thread. The function <code>doInBackground()</code> is used to perform the non-ui action (in most cases fetching data from server). While doing the background activity in <code>doInBackground()</code> you may wish to show some progress which you do by using <code>publishProgress()</code> which will internally call the <code>onProgressUpdate()</code> method. On completion of the background activity in <code>doInBackground()</code> you return the <code>result</code> of the activity, if you have any. After you return from the <code>doInBackground()</code> method internally there is call made to the <code>onPostExecute()</code> which will receive the <code>result</code> you have returned in <code>doInBackground()</code> as a parameter. Now <code>onPostExecute()</code> will run on a UI thread and most of the UI action like dismissing of dialog which was shown in <code>onPreExecute()</code>, displaying the <code>result</code> on some UI component etc. happens in this method.</p> <p>Now to the mistake you are doing in you code: You are showing a <code>toast</code> or a <code>notification</code> based on the result of your server data fetch using a function <code>notify</code> but you are still in the background non-ui thread. Now this result should ideally be returned and checked in the <code>onPostExecute()</code> and based on its value you can show the UI component of <code>toast</code>or <code>notification</code>.</p> <p>I hope this explanation helps you in solving your problem.</p> <p><strong>EDIT</strong></p> <p>In your case since you can send the boolean type result variable <code>ok</code> to <code>onPostExecute()</code>. For that you need to make the following changes:</p> <p>in class declaration:</p> <pre><code>public class asyncTaskUpdateProgress extends AsyncTask&lt;Void, Void, Boolean&gt; </code></pre> <p>and </p> <pre><code>protected void onPostExecute(Boolean result){ if (ok) { Toast.makeText(getApplicationContext(), "Connection Susccessfull", Toast.LENGTH_LONG) .show(); } else { Toast.makeText(getApplicationContext(), "Unable to connect", Toast.LENGTH_LONG).show(); notify(getApplicationContext(), true); } } </code></pre> <p>and finally in </p> <pre><code>protected Void doInBackground(Void... arg0) { boolean ok = false; try { SSHTest sshtest = new SSHTest(); ok = sshtest.sshconnect(UserStr, PassStr, IPStr, PortInt); } catch (Exception e) { e.printStackTrace(); Log.i("ERROR HERE", "doInBackground: IOException");} return ok; } </code></pre>
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    1. POUsing AsynTask to show progress bar while attempting to SSH to Server
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    1. USArun George
    1. USArun George
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    1. COArun, Thank you, your high level explanation really helps. my only problem however is getting down to the code :)... yea am a newbie, but from what you stated regarding the toast and notification, if i comment them for the time being, would it still show the progress bar? The other issue i have trouble with is what to pass and how? example: protected Void doInBackground(Void... arg0) should i leave it void ...args0? (this is were i also get lost
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    2. COWhile extending a AsyncTask you specify the 3 parameters type like `AsyncTask<Params, Progress, Result>` where `Params` are the parameter type you send to the `doInBackground()` , `Progress` is parameter type you send to the `onProgressUpdate()` and `Result` is for the `onPreExecute()`.
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    3. COCheck my edited post.
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