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    <p>Here The way in which I am able to draw direction between two points(Location).</p> <hr> <blockquote> <blockquote> <p>First of all download GoogleMap sdk from <a href="https://developers.google.com/maps/documentation/ios/releases" rel="nofollow">this</a> link and integrate into your application.</p> </blockquote> </blockquote> <p>Now API key required and you can create as par given guidelines on <a href="https://developers.google.com/maps/documentation/ios/start#the_google_maps_api_key" rel="nofollow">this</a> link.</p> <p>Below are Code that draw direction on google map between two location.</p> <hr> <pre><code>-(NSArray*) calculateRoutesFrom:(CLLocationCoordinate2D) f to: (CLLocationCoordinate2D) t { NSString* saddr = [NSString stringWithFormat:@"%f,%f", f.latitude, f.longitude]; NSString* daddr = [NSString stringWithFormat:@"%f,%f", t.latitude, t.longitude]; NSURL *url=[NSURL URLWithString:[NSString stringWithFormat:@"http://maps.googleapis.com/maps/api/directions/json?origin=%@&amp;destination=%@&amp;sensor=false&amp;avoid=highways&amp;mode=driving",saddr,daddr]]; NSError *error=nil; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ; [request setURL:url]; [request setHTTPMethod:@"POST"]; NSURLResponse *response = nil; NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&amp;response error: &amp;error]; NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; NSDictionary * dic = [NSJSONSerialization JSONObjectWithData:[responseString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONWritingPrettyPrinted error:nil]; return [self decodePolyLine:[self parseResponse:dic]]; } - (NSString *)parseResponse:(NSDictionary *)response { NSArray *routes = [response objectForKey:@"routes"]; NSDictionary *route = [routes lastObject]; if (route) { NSString *overviewPolyline = [[route objectForKey: @"overview_polyline"] objectForKey:@"points"]; return overviewPolyline; } return @""; } -(NSMutableArray *)decodePolyLine:(NSString *)encodedStr { NSMutableString *encoded = [[NSMutableString alloc] initWithCapacity:[encodedStr length]]; [encoded appendString:encodedStr]; [encoded replaceOccurrencesOfString:@"\\\\" withString:@"\\" options:NSLiteralSearch range:NSMakeRange(0, [encoded length])]; NSInteger len = [encoded length]; NSInteger index = 0; NSMutableArray *array = [[NSMutableArray alloc] init]; NSInteger lat=0; NSInteger lng=0; while (index &lt; len) { NSInteger b; NSInteger shift = 0; NSInteger result = 0; do { b = [encoded characterAtIndex:index++] - 63; result |= (b &amp; 0x1f) &lt;&lt; shift; shift += 5; } while (b &gt;= 0x20); NSInteger dlat = ((result &amp; 1) ? ~(result &gt;&gt; 1) : (result &gt;&gt; 1)); lat += dlat; shift = 0; result = 0; do { b = [encoded characterAtIndex:index++] - 63; result |= (b &amp; 0x1f) &lt;&lt; shift; shift += 5; } while (b &gt;= 0x20); NSInteger dlng = ((result &amp; 1) ? ~(result &gt;&gt; 1) : (result &gt;&gt; 1)); lng += dlng; NSNumber *latitude = [[NSNumber alloc] initWithFloat:lat * 1e-5]; NSNumber *longitude = [[NSNumber alloc] initWithFloat:lng * 1e-5]; CLLocation *location = [[CLLocation alloc] initWithLatitude: [latitude floatValue] longitude:[longitude floatValue]]; [array addObject:location]; } return array; } - (void)loadMapViewWithDirection { float lat = 23.050671; float lng = 72.541351; GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:lat longitude:lng zoom:10]; GMSMapView * mapView = [GMSMapView mapWithFrame:CGRectMake(0, 75, 320, self.view.frame.size.height-kHeaderRect.size.height) camera:camera]; self.mapView.myLocationEnabled = YES; float sourceLatitude = 23.050671; float sourceLongitude = 72.541351; float destLatitude = 23.036138; float destLongitude = 72.603836; GMSMarker *sourceMarker = [[GMSMarker alloc] init]; marker.position = CLLocationCoordinate2DMake(sourceLatitude, sourceLongitude); marker.map = self.mapView; GMSMarker *destMarker = [[GMSMarker alloc] init]; marker.position = CLLocationCoordinate2DMake(destLatitude, destLongitude); marker.map = self.mapView; self.mapView.delegate = self; [self drawDirection:CLLocationCoordinate2DMake(sourceLatitude, sourceLongitude) and:CLLocationCoordinate2DMake(destLatitude, destLongitude)]; [self.view addSubview:self.mapView]; } - (void) drawDirection:(CLLocationCoordinate2D)source and:(CLLocationCoordinate2D) dest { GMSPolyline *polyline = [[GMSPolyline alloc] init]; GMSMutablePath *path = [GMSMutablePath path]; NSArray * points = [self calculateRoutesFrom:source to:dest]; NSInteger numberOfSteps = points.count; for (NSInteger index = 0; index &lt; numberOfSteps; index++) { CLLocation *location = [points objectAtIndex:index]; CLLocationCoordinate2D coordinate = location.coordinate; [path addCoordinate:coordinate]; } polyline.path = path; polyline.strokeColor = [UIColor redColor]; polyline.strokeWidth = 2.f; polyline.map = self.mapView; // Copy the previous polyline, change its color, and mark it as geodesic. polyline = [polyline copy]; polyline.strokeColor = [UIColor greenColor]; polyline.geodesic = YES; polyline.map = self.mapView; } - (void)viewDidLoad { [super viewDidLoad]; [self loadMapViewWithDirection]; } </code></pre>
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