You should NEVER create or draw Views from a background thread. The UI toolkit (and the framework in general) is not thread safe.
On Sat, Nov 6, 2010 at 10:21 AM, Bret Foreman <[email protected]>wrote: > It takes some time to draw my views so I want to put up a progress > dialog while I do it. I set up the code like this: > > public class MyActivityClass { > > @Override > protected void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView( R.layout.myView ); > doBuild(savedInstanceState); > } > > protected void doBuild( Bundle savedInstanceState ){ > showDialog(drawingProgressDialogId); > ScreenBuilder builder = new ScreenBuilder(); > builder.execute(savedInstanceState); > } > > private class ScreenBuilder extends AsyncTask<Bundle , Integer , > LinearLayout > { > > @Override > protected LinearLayout doInBackground(Bundle... SIS) { > LinearLayout topLevelLayout = new > LinearLayout(MyActivityClass.this); > doDraw( SIS[0] , topLevelLayout ); // Adds a bunch of > child views > return topLevelLayout; > } > @Override > protected void onPostExecute(LinearLayout topLevelLayout) { > dismissDialog(drawingProgressDialogId); > setContentView(topLevelLayout); > super.onPostExecute(topLevelLayout); > } > } > } > > This works the first time through, where savedInstanceState is null. > But when there is a configuration change, like rotation and > savedInstanceState is not null, the dismissDialog call does not work. > The progress dialog remains on the screen. This is true even if doDraw > is stubbed so that I'm not doing anything with the savedInstanceState. > > Any ideas why this behavior might occur? > > -- > 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]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them -- 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
