That was AWESOME and really helps. So it leaves me only with one last Question...How do I do a drawcircle on the Overlay instead of Sending an icon? Every example I see involves placing an image marker..I don't see any examples for drawing Do you have a snippet of how you draw into an itemizedoverlay so that it doesn't clear as my method does?
On Apr 23, 1:22 pm, "~ TreKing" <treking...@gmail.com> wrote: > On Fri, Apr 23, 2010 at 11:18 AM, Scott <scotthameis...@gmail.com> wrote: > > If you don't mind i'm going to word this another way and see if I REALLY > > UNDERSTAND. > > Let's do it. > > > If i were to send a drawable object..i.e. PNG icon like all the examples > > the Overlay will accumulate them (add item)... > > The OverlayItem you send in addItem does NOT HAVE TO be an image, or any > drawable item for that matter, though it usually is. It's just something > with a position that can be represented on the map. > > > However...My Draw is done on a clean Slate ontop of the overlay...Basically > > the overlay is cleaned out and refreshed with each item(icon) added > > Yes. > > > So the draw is cleaned on each additem...So If that is correct or close > > to correct? > > Sort of. addItem just adds another OverlayItem to the collection of items. > Calling draw, by default, simply draws all the items that are in the > collection. When you add a new item it does invalidate the list causing a > redraw. > > > Then am I to understand that itemized Overlays are just for icons, > > It's just a collection of things to place on a map, which are usually > represented by icons. They can be whatever you want though. > > > or can i move my Draw to another location in this class, > > You don't want to be calling draw() on your own. This is called as necessary > when the map view needs to be drawn (when you scroll, zoom, add new items, > etc). > > > Like before the populate to make the circles accumulate and just send > > a darn icon into additem whether I want an icon or not? > > I'm not sure what you said here. > > > IN OTHER WORDS Can i collect anything other than icons in an > > itemized overlay? > > Yes, you can collect anything you want, as long as it's an OverlayItem. You > can define your own OverlayItem class that has more properties attached to > it besides the image and location. If you look at my website and > screenshots, you'll see that I use the map to show bus and stop icons. The > bus's in particular have a custom draw function that work similarly to what > you're doing. > > I call super.draw() to draw the icon, then I iterate over the collection of > items (each of which is a custom BusOverlayItem that has extra information) > to do custom drawing to display a bus number and another image of an arrow > that is oriented to show the bus direction. > > Draw is called ONCE for the one ItemizedOverlay (which represents the > collection of buses) and I, in turn, handle drawing each individual bus. > > Make sense? > > ItemizedOverlay can get confusing because it's one Overlay object as far as > the map is concerned, but is actually a collection of similar items treated > uniformly. Just remember that when you're doing custom drawing on it you > have to draw each individual item in the collection as necessary. > > ------------------------------------------------------------------------------------------------- > TreKing - Chicago transit tracking app for Android-powered > deviceshttp://sites.google.com/site/rezmobileapps/treking > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group > athttp://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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
