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public class ImageDraw extends ImageView{
private Paint   mPaint = new Paint();
List<Point> pts = new ArrayList<Point>() ;
 
public ImageDraw(Context context) {
    super(context);
 
}
//used to send the location of the points to draw on the screen
//must be called before every redraw to update the points on the screen
public void SetPointsToDraw(List<Point> pts)
{
    this.pts = pts;
}
 
 
public ImageDraw(Context context, AttributeSet attrs)
{
    super(context,attrs);
}
public ImageDraw(Context context, AttributeSet attrs, int defStyle)
{
    super(context, attrs, defStyle);
}
 
@Override
public void onDraw(Canvas canvas)
{
    super.onDraw(canvas);
 
    Paint paintColor = mPaint;
    paintColor.setColor(Color.YELLOW);
    paintColor.setStrokeWidth(3);
 
 
    if(pts.size() > 0)
    {
        canvas.drawCircle(pts.get(0).x, pts.get(0).y, 7, paintColor);   
    }
    if (pts.size() > 1)
    {
        for (int i = 1 ; i < pts.size(); i++) {
            paintColor.setColor(Color.YELLOW);
            canvas.drawCircle(pts.get(i).x, pts.get(i).y, 7, paintColor);
            paintColor.setColor(Color.RED);
            canvas.drawLine(pts.get(i-1).x, pts.get(i-1).y, pts.get(i).x, pts.get(i).y, paintColor);
        }
    }
 
 
}
}

PolylineOptions rectOptions = new PolylineOptions()
        .add(new LatLng(37.35, -122.0))
        .add(new LatLng(37.45, -122.0))  
        .add(new LatLng(37.45, -122.2))  
        .add(new LatLng(37.35, -122.2))  
        .add(new LatLng(37.35, -122.0)); 
 
Polyline polyline = myMapView.addPolyline(rectOptions);