Use adb logcat, DDMS, or the DDMS perspective in Eclipse to examine LogCat and look at your stack trace.
Since ItemizedOverlay requires you to have a numerically-indexed collection of points, your current approach will be unreliable, particularly as your data set changes. On Wed, Dec 7, 2011 at 7:32 AM, Rhubarb <[email protected]> wrote: > Hi > I am looking for a technique for storing my Overlays in a hashmap > (instead of arraylist) so I can delete them easily > > I tried the code below but it crashes, at it.next() with FATAL > EXCEPTION. > > I realise i am making an assumption that populate() will iterate > nicely from 0. But I think it should be OK > > class MyItemizedOverlay extends ItemizedOverlay<OverlayItem> { > > private ArrayList<OverlayItem> mOverlays = new > ArrayList<OverlayItem>(); //OLD > private HashMap<String, OverlayItem> mHMOverlays = new > HashMap<String, OverlayItem>(); > > // pretty standard stuff until .... > > @Override > protected OverlayItem createItem(int i) { > if (i == 0) { > it = mHMOverlays.entrySet().iterator(); > } > > if (it.hasNext()) { > OverlayItem x = (OverlayItem) it.next(); > // > crashes here > return x; > } > return null; > } > > Can anyone see why it would crash. I am at a loss > > I have seen an example that converts the hashmap to an array (in each > call to createItem) but I suspect it would be very inneficient. > LinkedHashMap might be the way to go > > Peter > > -- > 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 -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android App Developer Books: http://commonsware.com/books -- 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
