Android - drawing path as overlay on MapView
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by Rabas
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Published on 2010-06-14T09:27:08Z
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2010/06/14
9:32 UTC
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Hello, I have a class that extends Overlay and implemments Overlay.Snappable. I have overriden its draw method:
@Override
public void draw(Canvas canvas, MapView mv, boolean shadow)
{
Projection projection = mv.getProjection();
ArrayList<GeoPoint> geoPoints = new ArrayList<GeoPoint>();
//Creating geopoints - ommited for readability
Path p = new Path();
for (int i = 0; i < geoPoints.size(); i++) {
if (i == geoPoints.size() - 1) {
break;
}
Point from = new Point();
Point to = new Point();
projection.toPixels(geoPoints.get(i), from);
projection.toPixels(geoPoints.get(i + 1), to);
p.moveTo(from.x, from.y);
p.lineTo(to.x, to.y);
}
Paint mPaint = new Paint();
mPaint.setStyle(Style.FILL);
mPaint.setColor(0xFFFF0000);
mPaint.setAntiAlias(true);
canvas.drawPath(p, mPaint);
super.draw(canvas, mv, shadow);
}
As you can see, I make a list of points on a map and I want them to form a polygonal shape.
Now, the problem is that when I set paint style to be FILL or FILL_AND_STROKE nothing shows up on the screen, but when I set it to be just stroke, and set stroke width, it acctually draws what it is supposed to draw.
Now, I looked for solution, but nothing comes up. Can you tell me if I something missed to set in the code itself, or are there some sorts of constraints when drawing on Overlay canvases?
Thanks
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