I was able to "refresh" the items on my map by calling the activity again
I "bound" an intent onto a button (tab in my case) and when clicked, it does startActivity(intent) which forces map to reload its overlay (or whatever you decide to put into onStart() ) Possibly not the most efficient method, but it works well Have a read of my findings : http://www.jameselsey.co.uk/blogs/techblog/android-using-intents-to-refresh-tab-content/ On Sep 26, 3:11 pm, cwgrc2 <[email protected]> wrote: > I have built a simple app that uses a Google MapActivity. On top of > the Map, I have 2 overlays, a Marathon Course and the position of a > runner. The latter position overlay simply shows an updated blue > dot. I update the location of the dot every second but the screen > does not refresh. If I tap the scrren then the dot updates. > > Am I missing some hard refresh call somewhere? My Overlay code is > small and shown below. Note that it does go into the draw routine > every second and the point is changed. > > Thanks, > > Chris > > public class GhostOverlay extends ItemizedOverlay<OverlayItem> { > > private OverlayItem _ghost = new > OverlayItem(getPoint(39.55122004263103, > -105.13980455696583), "Ghost", "Start of > ride"); > > public GhostOverlay(Drawable arg0) { > super(arg0); > populate(); > } > > private GeoPoint getPoint(double lat, double lon) { > return(new GeoPoint((int)(lat*1000000.0), (int)(lon*1000000.0))); > } > > protected OverlayItem createItem(int i) { > return _ghost; > } > > public int size() { > return 1; > } > > @Override > public void draw(Canvas canvas, MapView mv, boolean shadow) { > super.draw(canvas, mv, shadow); > } > > /** > * Update the location of the ghost runner, called every second. > * Is there a refresh I need to call? The screen only updates when > I > * tap it or switch a tab and come back. > * @param loc the 2D location of the runner. > */ > public void drawGhost(Coord2D loc) { > _ghost = new OverlayItem(getPoint(loc.y, loc.x), "Ghost", ""); > populate(); > } > > } -- 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
