How to draw line on MapView given coordinates?
AFAIK, on iPhone it is possible.
Please advise.
Thanks in advance.
How to draw line on MapView given coordinates? AFAIK, on iPhone it is possible.
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How to draw line on MapView given coordinates?
AFAIK, on iPhone it is possible.
Please advise.
Thanks in advance.
To use a MapView your Activity must extend MapActivity.
For each line you want to draw (or really anything else) you need to subclass Overlay and do the drawing in the
Overlay‘sonDraw()method. Once you’ve created yourOverlayadd it to theMapViewwith something likemMapView.getOverlays().add(new MyOverlay());.Inside your custom
Overlayyou’ll want to get a Projection with something likeProjection p = mapView.getProjection();. From theProjectionyou can convert GPS coordinates into screen coordinates withProjection‘s toPixels(GeoPoint, Point) method and then just draw to the passed in Canvas using normal Android 2D drawing methods.That’s the basics… if you need anything else, just ask.