Sample of what? Deriving from the class and overriding a method should be
pretty straightforward:
public class MyOverlay exntends Overlay
{
...
void draw(android.graphics.Canvas canvas, MapView mapView, boolean shadow)
{
// Logic to figure out where to draw
// Use canvas to draw
}
...
}
And at some point you add this to the mapview's overlays:
MyOverlay mo = new MyOverlay();
mapView.getOverlays().add(mo);
The draw call gets called for you when the map gets drawn.
-------------------------------------------------------------------------------------------------
TreKing - Chicago transit tracking app for Android-powered devices
http://sites.google.com/site/rezmobileapps/treking
On Wed, Jan 13, 2010 at 2:42 PM, Peter <pmcalen...@gmail.com> wrote:
> Thanks... Any chance you could show a sample of that. I am new to
> this and not real familiar with the coding approach.
> -Pete
>
> On Jan 13, 1:19 pm, TreKing <treking...@gmail.com> wrote:
> > Create a class derived from Overlay and override onDraw() to do your
> custom
> > drawing.
> >
> >
> -------------------------------------------------------------------------------------------------
> > TreKing - Chicago transit tracking app for Android-powered deviceshttp://
> sites.google.com/site/rezmobileapps/treking
> >
> >
> >
> > On Wed, Jan 13, 2010 at 7:29 AM, Peter <pmcalen...@gmail.com> wrote:
> > > Hi,
> >
> > > I am new to Android Dev and to this group. I wanted to do some work
> > > with the MapView. Mostly some basic stuff like zooming to an address,
> > > and the programatically drawing a shape (polygon) based on user input
> > > of coordinates. Then i want to overlay that polygon on the google map
> > > at the specified location.
> >
> > > Does anyone have some sample code for a polygon overlay? I went
> > > through the MapView tutorial on the Android Dev site, and that was
> > > great to get me started. But that uses a GeoPoint overlay... I guess
> > > i am looking for more of a GeoPolygon (??) overlay, but i checked the
> > > google api and there is no such class.
> >
> > > Any help or links to documentation to do this would be great. I am
> > > guessing i need to great an android.graphics.drawable.shapes.shape to
> > > create the polygon, and then add it to an OverlayItem from the google
> > > maps API?? But i am very confused on how to do this.
> >
> > > Thanks!
> >
> > > Pete
> >
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