Without code samples, I don't think anyone is going to be able to help you find your issue. I use this all the time and the only time I have seen it not work was when I made a mistake somewhere else in the code.
I do usually do a null check on things in the onDestory before I use them because my code can get more complicated as it goes. I end up changing variables along the way forgetting I'm cleaning them up at the end. If you do find a serious bug like this, you'd definitely want to go through the steps to reproduce it and post a bug reports in the Android Issue Tracker if someone else hasn't found it already. http://code.google.com/p/android/issues/list Steven Studio LFP http://www.studio-lfp.com On Saturday, October 8, 2011 11:53:05 AM UTC-5, DraganA wrote: > > That's the problem, the list is created in onCreate() method and is > not reassigned or set to null anywhere. I forgot to say, the null > pointer happens in onDestroy() method in list.clear() line. From that > I can only deduce that onDestroy() is called before onCreate() > > On Oct 8, 5:42 pm, Studio LFP <[email protected]> wrote: > > Based on that, you shouldn't get a crash, but obviously that's not the > full > > code you are using. > > > > Are you changing that variable at any other point in the code? > > > > Steven > > Studio LFPhttp://www.studio-lfp.com > > > > > > > > > > > > > > > > On Saturday, October 8, 2011 3:34:15 AM UTC-5, DraganA wrote: > > > > > I'm puzzled as to why I'm getting Null pointer exception in the > > > construct below, knowing the Activity life cycle, it shouldn't happen. > > > Could the clue be in TabActivity?? > > > > > public class Main extends TabActivity { > > > > > private List<String> list; > > > > > public void onCreate(Bundle savedInstanceState) { > > > list = new ArrayList<String>(); > > > } > > > > > protected void onDestroy() { > > > list.clear(); > > > } > > > } -- 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
