I have added polylines but not able to add arrow with direction on google map should be display as below 
And when it zoom up, more arrow should be display like below 
I have tried reading various blogs and codes but not able to get the goal
I have used following code snippet below:
private void DrawArrowHead(MarkerOptions MO, GoogleMap mMap, LatLng from, LatLng to) { // obtain the bearing between the last two points double bearing = GetBearing(from, to); // round it to a multiple of 3 and cast out 120s double adjBearing = Math.round(bearing / 3) * 3; while (adjBearing >= 120) { adjBearing -= 120; } StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); // Get the corresponding triangle marker from Google URL url; Bitmap image = null; try { url = new URL("http://www.google.com/intl/en_ALL/mapfiles/dir_" + String.valueOf((int) adjBearing) + ".png"); try { // image = BitmapFactory.decodeStream(url.openConnection().getInputStream()); Log.d("HistoryDisplay", String.valueOf(adjBearing)); // image = BitmapFactory.decodeResource(getResources(), R.drawable.arrow); image = BitmapFactory.decodeResource(getResources(), allArrow.get((int) adjBearing)); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } if (image != null) { // Anchor is ratio in range [0..1] so value of 0.5 on x and y will center the marker image on the lat/long float anchorX = 0.5f; float anchorY = 0.5f; int offsetX = 0; int offsetY = 0; // images are 24px x 24px // so transformed image will be 48px x 48px //315 range -- 22.5 either side of 315 if (bearing >= 292.5 && bearing < 335.5) { offsetX = 24; offsetY = 24; } //270 range else if (bearing >= 247.5 && bearing < 292.5) { offsetX = 24; offsetY = 12; } //225 range else if (bearing >= 202.5 && bearing < 247.5) { offsetX = 24; offsetY = 0; } //180 range else if (bearing >= 157.5 && bearing < 202.5) { offsetX = 12; offsetY = 0; } //135 range else if (bearing >= 112.5 && bearing < 157.5) { offsetX = 0; offsetY = 0; } //90 range else if (bearing >= 67.5 && bearing < 112.5) { offsetX = 0; offsetY = 12; } //45 range else if (bearing >= 22.5 && bearing < 67.5) { offsetX = 0; offsetY = 24; } //0 range - 335.5 - 22.5 else { offsetX = 12; offsetY = 24; } Bitmap wideBmp; Canvas wideBmpCanvas; Rect src, dest; // Create larger bitmap 4 times the size of arrow head image wideBmp = Bitmap.createBitmap(image.getWidth() * 2, image.getHeight() * 2, image.getConfig()); wideBmpCanvas = new Canvas(wideBmp); src = new Rect(0, 0, image.getWidth(), image.getHeight()); dest = new Rect(src); dest.offset(offsetX, offsetY); wideBmpCanvas.drawBitmap(image, src, dest, null); // MO.position(to); MO.icon(BitmapDescriptorFactory.fromBitmap(wideBmp)); MO.anchor(anchorX, anchorY); mMap.addMarker(MO); // mMap.addMarker(new MarkerOptions() // .position(to) // .icon(BitmapDescriptorFactory.fromBitmap(wideBmp)) // .anchor(anchorX, anchorY)); } } private double GetBearing(LatLng from, LatLng to) { double lat1 = from.latitude * Math.PI / 180.0; double lon1 = from.longitude * Math.PI / 180.0; double lat2 = to.latitude * Math.PI / 180.0; double lon2 = to.longitude * Math.PI / 180.0; // Compute the angle. double angle = -Math.atan2(Math.sin(lon1 - lon2) * Math.cos(lat2), Math.cos(lat1) * Math.sin(lat2) - Math.sin(lat1) * Math.cos(lat2) * Math.cos(lon1 - lon2)); if (angle < 0.0) angle += Math.PI * 2.0; // And convert result to degrees. angle = angle * degreesPerRadian; return angle; }