需要帮助创建覆盖，如 android 中的图片

Question

I need to make an overlay Just like this Attached Pic... Need help to make it... I need to mark a position just like in the pic with red....

Answer 1

• Create a new class extending Overlay.
• Use the constructor to pass it 4 GeoPoint in order to delimit your zone
• Override the boolean draw(Canvas canvas, MapView mapv, boolean shadow, long when) method:
  • Call super(canvas, mapv, shadow)
  • Create a path using your GeoPoints and the MapView projection: mapv.getProjection().toPixels(geopoint, newPoint)
  • Use canvas.drawPath(path,paint) to draw the path