You still have access to a member variable (activity) inside code that runs on the non-UI (worker) thread.
Either: - Do not reference the activity from doInBackground, moving the actual code here from activity.doBackgroundRequest - Or learn the basics the thread synchronization, so that your UI thread doesn't change the value of "activity" member variable while it's being accessed by the background thread. -- Kostya 2011/10/27 Bluemercury <[email protected]> > Yes i have a indeterminate progressBar in the header, the spinner one, but > im using broadcast to all the activities which have the spinner to show or > hide it if there's a task running in the background.... : > > > @Override > protected void onPreExecute() { > Logger.write("QuadrosMobileActivityTask ", " AsyncTask pre execution "+ > "Current Activity: "+activity.getClass().getName(), Logger.INFO); > > Intent broadcast = new Intent(); > broadcast.setAction("SHOW_PROGRESSBAR"); > mApp.sendBroadcast(broadcast); > mApp.setProgressBarInitialState(ProgressBar.VISIBLE); > } > > @Override > protected Object doInBackground(Void... params) { > *do{* > * SystemClock.sleep(50); * > * }while(activity==null);* > * > * > * Logger.write("QuadrosMobileActivityTask ", " AsyncTask background > initialized "+"Current Activity: "+activity.getClass().getName(), > Logger.INFO);* > * return activity.doBackGroundRequest();//method implemented by all sub > activities* > } > > > @Override > protected void onPostExecute(Object result) { > > if(activity!=null){ > Logger.write("QuadrosMobileActivityTask ", " AsyncTask post execution > "+"Current Activity: "+activity.getClass().getName(), Logger.INFO); > //update results > activity.updateResultsInUi(result); > mApp.getAsyncTasks().remove(this); > > //check if there's more tasks in the collection > if(mApp.getAsyncTasks().isEmpty()){ > Intent broadcast = new Intent(); > broadcast.setAction("HIDE_PROGRESSBAR"); > mApp.sendBroadcast(broadcast); > mApp.setProgressBarInitialState(ProgressBar.GONE); > } > } > } > > the bold text is the one that gives problems.....but in the pre and post > there's no problem having the activity reference... > > > -- > 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 > -- 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
