Any news on how to implement this ? Is overriding the class that extends itemizedOverlay on the onTap method enough? I need to show information when the user clicks a marker and cant seem to find possibilities
On Jun 29, 9:52 pm, Steve Howard <[email protected]> wrote: > Trying to resend this reply as I think it may not have gone through the > first time... > > Steve > > > > On Thu, Jun 24, 2010 at 11:24 AM, Steve Howard <[email protected]> wrote: > > I think the ideal usage would be something like this: > > > public boolean onTap(GeoPoint point, MapView mapView) { > > // first, let the superclass check if the event hit a marker; if so, > > it'll call onTap(index) > > // if it returns true, that means onTap(index) returned true, > > meaning the event has been handled already > > if (super.onTap(point, mapView)) { > > return true; > > } > > > // the event wasn't handled as a tap on an existing marker, so let's > > add a new marker > > addNewMarkerAt(point); > > return true; > > } > > > public boolean onTap(int index) { > > // an existing marker was tapped > > // ...display info by whatever means are appropriate... > > return true; // indicate that we've handled this tap, and it > > shouldn't propagate to other potential handlers > > } > > > You can override both, but the key is to call the superclass > > implementation of onTap(GeoPoint, MapView) and examine its return > > value. > > > Let me know if that helps. > > > Steve > > > On Thu, Jun 24, 2010 at 9:57 AM, Carlos Silva <[email protected]> wrote: > > > On Thu, Jun 24, 2010 at 17:49, TreKing <[email protected]> wrote: > > > >> On Jun 15, 9:15 am, tfriest <[email protected]> wrote: > > >> > Does anyone know of a better way to do this? > > > >> As you've seen, the maps documentation is pretty pathetic. What I know > > >> of the onTap functions has been gleamed from trial and error and > > >> experimentation. This is how I believe it works: > > > >> onTap(int) determines whether the item at the specified index will > > >> handle tap events at all. If you return false, the other onTap > > >> function will always return false. > > > >> onTap(Point, MapView) determines whether an item in the overlay was > > >> tapped given the touch point, if onTap(int) return true for it's > > >> index. > > > >> OK, with that, what you can do is: > > >> return true for onTap(int) always. > > >> in onTap(Point, MapView) call through to the base implementation to > > >> determine if something was tapped. And that's it. > > > >> public boolean onTap(point, mapview) > > >> { > > >> boolean tapped = super.onTap(point, mapView); > > >> if (tapped) > > >> showInfo(); > > >> else > > >> dropNewItem(point); > > > >> return true; // irrelevant if you only have one itemized overlay > > >> } > > > >> Hope that helps. > > > >> -- > > >> 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%2Bunsubs > > >> [email protected]> > > >> For more options, visit this group at > > >>http://groups.google.com/group/android-developers?hl=en > > > > I don't really agree with this. > > > I use onTap(int) to detect if an overlayItem was clicked. And use > > > onTap(point, mapview) to handle every other click on the map. I use the > > > first to show a ballow, and the second to hide it. > > > > -- > > > 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%2Bunsubs > > > [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
