How to use

toPixels

method

in

com.google.android.gms.maps.Projection

projection.toPixels(gP1, p1);
projection.toPixels(gP2, p2);

Projection projection = mapV.getProjection();
Point pt = new Point();
projection.toPixels(globalGeoPoint,pt);
projection.toPixels(newGeos,pt2);
float circleRadius = Math.abs(pt2.y-pt.y);

path.rewind();
final Iterator<GeoPoint> it = routePoints.iterator();
prj.toPixels(it.next(), p);
path.moveTo(p.x, p.y);
while (it.hasNext()) {
    prj.toPixels(it.next(), p);
    path.lineTo(p.x, p.y);

paint.setAntiAlias(true);
Point point = new Point();
projection.toPixels(gp1, point);
paint.setColor(Color.BLUE);
Point point2 = new Point();
projection.toPixels(gp2, point2);
paint.setStrokeWidth(2);
canvas.drawLine((float) point.x, (float) point.y, (float) point2.x,

GeoPoint gPointA = _points.get(i);
Point pointA = new Point();
projection.toPixels(gPointA, pointA);
if (i == 0) { //This is the start point
    startPoint = pointA;

paint.setAntiAlias(true);
Point point = new Point();
projection.toPixels(gp1, point);
  paint.setColor(defaultColor);
 Point point2 = new Point();
 projection.toPixels(gp2, point2);
 paint.setStrokeWidth(5);
 paint.setAlpha(120);

projection.toPixels(gP2, p2);

Point pt2 = new Point();
Projection projection = mapView.getProjection();
projection.toPixels(mGpt1, pt1);
projection.toPixels(mGpt2, pt2);
canvas.drawLine(pt1.x, pt1.y, pt2.x, pt2.y, paint);
return true;

paint.setAntiAlias(true);
Point point = new Point();
projection.toPixels(gp1, point);
paint.setColor(Color.BLUE);
Point point2 = new Point();
projection.toPixels(gp2, point2);
paint.setStrokeWidth(2);
canvas.drawLine((float) point.x, (float) point.y, (float) point2.x,(float) point2.y, paint);

 if(mapView != null){
  Projection projection = mapView.getProjection();
  if(projection != null){
     mScreenPoints = projection.toPixels(pointToDraw, mScreenPoints);
  }
  else{
   // log it projection is null
  }
}
else{
  //log it mapView is null
}

 public boolean onTap(GeoPoint p, MapView mapView) { 
 Projection projection = mapView.getProjection();
 projection.toPixels(yourMarkerGeopoint, pointTap);
 yourMarker.copyBounds(boundsTap);
 boundsTap.offset(pointTap.x, pointTap.y);
 projection.toPixels(geoPoint, pointTap);
 if(boundsTap.contains(pointTap.x, pointTap.y)){
  //you tap on the marker
  return true;
 }
 return false;
}

Projection projection = mapView.getProjection();
 Paint paint = new Paint();
 Point point = new Point();
 projection.toPixels(gp1, point);
 paint.setColor(color);
 Point point2 = new Point();
 projection.toPixels(gp2, point2);

 OverlayItem item = overlayItems_.get(index);
Projection projection = mMapView.getProjection();
  Point point = new Point();
  projection.toPixels(item.getPoint(), point);
  Toast toast = Toast.makeText(mContext, item.getTitle()+" "+item.getSnippet(), Toast.LENGTH_SHORT);
  toast.setGravity(Gravity.TOP | Gravity.LEFT, point.x, point.y);
  toast.show();

 float pisteX;
float pisteY;
Projection projection = this.mapView.getProjection(); 
Point pt = new Point();
GeoPoint gie = new GeoPoint(latitude,longitude);
Rect rec = mapView.getScreenRect(new Rect());
projection.toPixels(gie, pt);
pisteX = pt.x-rec.left; // car X screen coord
pisteY = pt.y-rec.top; // car Y screen coord

 public void draw(Canvas canvas, MapView mapView, boolean shadow){
    super.draw(canvas, mapView, shadow);
    path = new Path();
    Projection proj = mapView.getProjection();
    proj.toPixels(gp1, p1);
    proj.toPixels(gp2, p2);
    path.moveTo(p2.x, p2.y);
    path.lineTo(p1.x,p1.y);
    canvas.drawPath(path, somePaintObject);
}

 Point screenPts = new Point();

@Override
protected void drawOverlayBitmap(Canvas canvas, Point point, 
         Projection projection, byte zoom){

    projection.toPixels(new GeoPoint((int)(location.getLatitude()*1E6),
         (int)(location.getLongitude()*1E6)) , screenPts);
    canvas.drawBitmap(myBitmap, screenPts.x, screenPts.y, new Paint());
}

 Projection projection = mapView.getProjection();
Point center = projection.toPixels(new GeoPoint(yourLat * E6, yourLong * E6), null);
float radius = projection.metersToEquatorPixels(radiusInMeters);
canvas.draw(center.x, center.y, radius, new Paint());

 Projection projection = map.getProjection();
projection.toPixels(geoPointBefore, pt);
geoPointAfter = projection.fromPixels(pt.x, pt.y);

int diffLatitude  = geoPointBefore.getLatitudeE6()  - geoPointAfter.getLatitudeE6();
int diffLongitude = geoPointBefore.getLongitudeE6() - geoPointAfter.getLongitudeE6();
...
...
...
// Add the difference to GeoPoint objects after conversion `fromPixels`

 public class CrossHairsOverlay extends Overlay {
  public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {
    super.draw(canvas, mapView, shadow);
    GeoPoint centerGp = mapView.getMapCenter();
    Projection projection = mapView.getProjection();
    Point centerPoint = projection.toPixels(centerGp, null);
    Paint p = new Paint();
    Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.crosshairs_dial);
    canvas.drawBitmap(bmp, centerPoint.x, centerPoint.y, p);
    return true;
  }
}

 public static void panMap (int x, int y, MapView map) {
  Point ptPixels = new Point();
  GeoPoint geoPt = map.getMapCenter();
  Projection projection = map.getProjection();
  projection.toPixels(geoPt, ptPixels);
  ptPixels.x += x;
  ptPixels.y += y;
  geoPt = projection.fromPixels(ptPixels.x, ptPixels.y);
  map.getController().animateTo(geoPt);
}