OverlayDemo.java 文件源码

private void drawPolygon(Canvas canvas, MapView mapView)
{
    Point ptpolygon1=mapView.getProjection().toPixels(geoPolygon1, null);
    Point ptpolygon2=mapView.getProjection().toPixels(geoPolygon2, null);
    Point ptpolygon3=mapView.getProjection().toPixels(geoPolygon3, null);
    Point ptpolygon4=mapView.getProjection().toPixels(geoPolygon4, null);

    Path pathpolygon=new Path();
    pathpolygon.moveTo(ptpolygon1.x, ptpolygon1.y);
    pathpolygon.lineTo(ptpolygon2.x, ptpolygon2.y);
    pathpolygon.lineTo(ptpolygon3.x, ptpolygon3.y);
    pathpolygon.lineTo(ptpolygon4.x, ptpolygon4.y);

    Paint paintpolygon=new Paint();
    paintpolygon.setStyle(Style.FILL);
    paintpolygon.setStrokeWidth(10);
    paintpolygon.setColor(Color.BLUE);
    paintpolygon.setAntiAlias(true);
    paintpolygon.setStrokeCap(Cap.ROUND);
    paintpolygon.setStrokeJoin(Join.ROUND);

    canvas.drawPath(pathpolygon, paintpolygon);
}