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POHow to find Latitude and Longitude from Address in iPhone
 

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  1. POHow to find Latitude and Longitude from Address in iPhone
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    <p>I am making one application in which i am getting the address, i need to find the latitude and longitude from that address and show the place in map</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; [mapView setMapType:MKMapTypeStandard]; [mapView setZoomEnabled:YES]; [mapView setScrollEnabled:YES]; mapView.showsUserLocation = YES; MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } }; geoCoder.delegate = self; [geoCoder start]; double latitude = 0, longitude = 0; region.center.latitude = latitude; region.center.longitude = longitude; region.span.longitudeDelta = 0.01f; region.span.latitudeDelta = 0.01f; [mapView setRegion:region animated:YES]; [mapView setDelegate:self]; DisplayMap *ann = [[DisplayMap alloc] init]; ann.title = @"BarRestaurant"; ann.subtitle = @"..."; ann.coordinate = region.center; [mapView addAnnotation:ann]; } -(MKAnnotationView *)mapView:(MKMapView *)mV viewForAnnotation: (id &lt;MKAnnotation&gt;)annotation { MKPinAnnotationView *pinView = nil; if(annotation != mapView.userLocation) { static NSString *defaultPinID = @"com.invasivecode.pin"; pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID]; if ( pinView == nil ) pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease]; pinView.pinColor = MKPinAnnotationColorRed; pinView.canShowCallout = YES; pinView.animatesDrop = YES; } else { [mapView.userLocation setTitle:@"I am here"]; } return pinView; } - (CLLocationCoordinate2D) geoCodeUsingAddress:(NSString *)address { appRestaurantAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; double latitude = 0, longitude = 0; address = delegate.streetName; NSString *esc_addr = [address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSString *req = [NSString stringWithFormat:@"http://maps.google.com/maps/api/geocode/json?sensor=false&amp;address=%@", esc_addr]; NSString *result = [NSString stringWithContentsOfURL:[NSURL URLWithString:req] encoding:NSUTF8StringEncoding error:NULL]; if (result) { NSScanner *scanner = [NSScanner scannerWithString:result]; if ([scanner scanUpToString:@"\"lat\":" intoString:nil] &amp;&amp; [scanner scanString:@"\"lat\":" intoString:nil]) { [scanner scanDouble:&amp;latitude]; if ([scanner scanUpToString:@"\"lng\":" intoString:nil] &amp;&amp; [scanner scanString:@"\"lng\":" intoString:nil]) { [scanner scanDouble:&amp;longitude]; } } } CLLocationCoordinate2D center; center.latitude = latitude; center.longitude = longitude; return center; } </code></pre> <p>however i am unable to find the latitude and longitude please help me where i am doing wrong in the delegate i am getting the address from web server</p>
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