Kostya, > Back to your error message. What it means (in translation from > Androidese) is that your code tries to create a UI component > (ProgressDialog) from the worker thread. This violates the rule that you > can only touch the UI from the UI thread.
Bingo! That is what I was guessing all this means. With that bit of information, maybe I will can learn a little more. Now I know why the first code works and the second one does not. Thanks Kostya, John Brown On Mar 28, 2:39 pm, Kostya Vasilyev <[email protected]> wrote: > 29.03.2011 0:21, john brown пишет: > > > Kostya, > > > Part of my problem is that I do not know enough to understand the > > documentation. In this specific documentation I got lost when it said: > > publishProgress(... > > setProgressPercent(.... > > showDialog(..... > > AsyncTask is pretty simple. It has two sides: the worker thread and the > UI thread. > > Your code that performs a lengthy operation on the worker thread can > call publishProgress(), which is automatically dispatched to the UI > thread and turned into onProgressUpdate(). > > This is needed because Android UI components can only be used from the > UI thread, and AsyncTask's doInBackground() runs on a worker thread > (which is AsyncTask's reason for existence). > > UI thread is defined here: > > http://developer.android.com/guide/topics/fundamentals/processes-and-... > > which also gives some simple rules to follow when dealing with threads > on Android. > > Back to your error message. What it means (in translation from > Androidese) is that your code tries to create a UI component > (ProgressDialog) from the worker thread. This violates the rule that you > can only touch the UI from the UI thread. > > > I do not know what those lines mean. I type them in my code, they are > > not recognized and produce errors in my editor. (eclipse) > > Yes, you really need to know at least the basics of Java to program with it. > > -- Kostya > > > (I am studying. I have ordered new books. etc) > > > Thanks, John Brown > > -- > Kostya Vasilyev --http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
