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    <p>I came up with a solution for this problem without any major workaround: The basic idea how to maintain a progressdialog and a asynctask is described in this <a href="http://blog.doityourselfandroid.com/2010/11/14/handling-progress-dialogs-and-screen-orientation-changes/" rel="nofollow">blogentry</a> (of course I used the AsyncTaskComplex-Version). All credits go to the author of this blogentry, I only added a tiny thing:</p> <p>Obviously I'm not using showDialog() anymore. Instead I stick with DialogFragments.</p> <p>The second tweak is the importent one and also solves the problem with the IllegalStateException:</p> <p>Instead of only telling the asynctask in onRetainCustomNonConfigurationInstance() that there is no more activity I also do it in onPause(). And instead of only telling the asynctask in onCreate() that there is a new activity I also do it in onResume().</p> <p>And there you go, your AsyncTask will not try to inform your activity about his finish causing an IllegalStateException when the activity is not visible.</p> <p>If you would like to see more code instead of words, leave a comment.</p> <p><strong>/edit:</strong> Sourcecode to show my solution, which I think is a pretty decent one :)</p> <pre><code>public class MyActivity extends Activity { private MyTask mTask; @Override protected void onCreate(Bundle pSavedInstanceState) { super.onCreate(pSavedInstanceState); setContentView(R.layout.editaccount); Object retained = getLastCustomNonConfigurationInstance(); if ( retained instanceof NewContactFolderIdTask ) { mTask = (MyTask) retained; mTask.setActivity(this); } } @Override protected void onPause() { if(mTask != null) { mTask.setActivity(null); } super.onPause(); } @Override public Object onRetainCustomNonConfigurationInstance() { if(mTask != null) { mTask.setActivity(null); return mTask; } return null; } @Override protected void onResume() { if(mTask != null) { mTask.setActivity(this); } loadValues(); // or refreshListView or whatever you need to do super.onResume(); } public void onTaskCompleted() { loadValues(); // or refreshListView or whatever you need to do DialogFragment dialogFragment = (DialogFragment) getSupportFragmentManager().findFragmentByTag(PROGRESS_DIALOG_FRAGMENT); if(dialogFragment != null) { dialogFragment.dismiss(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater menuInflater = getMenuInflater(); menuInflater.inflate(R.menu.main, menu); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: // app icon in Action Bar clicked; go home Intent intent = new Intent(this, OXClient.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); return true; case R.id.menu_refresh: mTask = new MyTask(this); mTask.execute(); break; } return super.onOptionsItemSelected(item); } private class NewContactFolderIdTask extends AsyncTask&lt;Boolean, Integer, Bundle&gt; { private MyActivity mActivity; private boolean mCompleted; private NewContactFolderIdTask(MyActivity pActivity) { this.mActivity = pActivity; } public void setActivity(MyActivity pActivity) { this.mActivity = pActivity; if(mCompleted) { notifiyActivityTaskCompleted(); } } private void notifiyActivityTaskCompleted() { if(mActivity != null) { mActivity.onTaskCompleted(); } } @Override protected Bundle doInBackground(Boolean... pBoolean) { // Do your stuff, return result } @Override protected void onPreExecute() { DialogFragment newFragment = ProgressDialogFragment.newInstance(); newFragment.show(getSupportFragmentManager(), PROGRESS_DIALOG_FRAGMENT); } @Override protected void onPostExecute(Bundle pResult) { mCompleted = true; notifiyActivityTaskCompleted(); } } </code></pre> <p>}</p>
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    1. POHow to handle AsyncTask onPostExecute when paused to avoid IllegalStateException
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    1. USChristoph Haefner
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    1. COThanks, the above is fine however if you put the application into the background before you get your onPostExecute I would still expect the dialogFragment to be dimissed at which point you'll see an illegalStateException unless I'm missing something obvious.
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    2. COYes, you are right. I'm also getting a IllegalStateException when my asyncTask finishs while the activity/application is in the background. Never tried that befor :/
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    3. COSorry for not reading your questions carefully, totally overred the "put in background" part :/
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