MKMapkit route is misaligned or not in the centre of road

I am developing an application in which I need to draw a route between two points using lat/long.

I have used apple API to get polylines and drawing it after decoding it.

Problem:

1. Route is not in the middle of the road (Attached image_1) or route is misaligned

Below is the code:

    NSString* saddr = [NSString stringWithFormat:@"%@,%@",self.lat1.text,self.long1.text];

    NSString* daddr = [NSString stringWithFormat:@"%@,%@",self.lat2.text,self.long2.text];

    NSString* apiUrlStr = [NSString stringWithFormat:@"http://maps.apple.com/maps/api/directions/json?origin=%@&destination=%@&sensor=false", saddr, daddr];

    NSURL* apiUrl = [NSURL URLWithString:apiUrlStr];

    NSError *error;
    NSString *apiResponse = [NSString stringWithContentsOfURL:apiUrl encoding:NSUTF8StringEncoding error:&error];


    NSData *responseData = [apiResponse dataUsingEncoding:NSUTF8StringEncoding];


    NSError* error1;
    NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData
                                                         options:NSJSONReadingMutableLeaves
                                                           error:&error1];
    NSLog(@"Error: %@\n%@",[error1 localizedDescription],[error1 localizedFailureReason]);


   if([[json objectForKey:@"status"] isEqualToString:@"OK"])
    {
        NSArray *routes1 = [json objectForKey:@"routes"];
        NSDictionary *route = [routes1 lastObject];

        if (route)
        {
            NSString *overviewPolyline = [[route objectForKey: @"overview_polyline"] objectForKey:@"points"];

            routes = [self decodePolyLine:overviewPolyline];

            //NSLog(@"%@",[routes objectAtIndex:0]);

            [self updateRouteView];
            [self centerMap];
        }
    }


-(void) updateRouteView
{
 NSInteger numberOfSteps = routes.count;

CLLocationCoordinate2D coordinates[numberOfSteps];
for (NSInteger index = 0; index < numberOfSteps; index++) {
    CLLocation *location = [routes objectAtIndex:index];
    CLLocationCoordinate2D coordinate = location.coordinate;

    coordinates[index] = coordinate;
}

MKPolyline *polyLine = [MKPolyline polylineWithCoordinates:coordinates count:numberOfSteps];
[self.mapView addOverlay:polyLine];

}

It's the same problem you described in your other question and it has the same solution. You are using data from two different sources, and the data is different.