Error on Android AsyncTask's OnCancelled()

Question

I found an error in AsyncTask's OnCancelled() method and the error is below:

Exception of type 'Java.Lang.IllegalArgumentException' was thrown.

java.lang.IllegalArgumentException: View=com.android.internal.policy.impl.PhoneWindow$DecorView{41b1e790 V.E..... R.....ID 0,0-456,144} not attached to window manager

Code I am using inside OnCancelled() is:

if (progressDialog != null)
{
   if (progressDialog.IsShowing == true)
      progressDialog.Dismiss();
 }

Sorry @Rustam i can't share my code with you due to some privacy.. I caught the above exception in OnCancelled() method so definitely the error will be inside it and and due to the above code which i mentioned — Ranjit Bisht, Aug 22 '15 at 10:33
hmmm i m sure error is due to other portion of your code than what you posted. — Rustam, Aug 22 '15 at 10:53
No @Rustam i used try/catch statement inside OnCancelled() method — Ranjit Bisht, Aug 22 '15 at 11:40
@Rustam i got my ansswer, it is because the activity is destroyed where the progressDialog is rendered. Thanks for your response... — Ranjit Bisht, Aug 22 '15 at 11:42

score 1 · Answer 1 · edited May 23 '17 at 12:29

1

This happens if your view was already destroyed by the time the AsyncTask's onCancelled event has fired. Look at this SO question

edited May 23 '17 at 12:29

Community

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1

answered Aug 22 '15 at 10:43

you are correct, but i actually want to know the solution for it i.e. how can i avoid this type of exception – Ranjit Bisht Aug 22 '15 at 10:49
Read the solutions to the question in the link I've added to my answer. – Aug 22 '15 at 11:09
Thanks @Eran for you quick response – Ranjit Bisht Aug 22 '15 at 11:38

Error on Android AsyncTask's OnCancelled()

1 Answers1