iOS 7 - region.center 弃用

Question

我的 iOS 应用有以下代码:

NSString *location = [[NSString alloc] initWithFormat:@"%@, %@", [self.campus campusStreetAddress], [self.campus campusCityStateZip]];
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
[geocoder geocodeAddressString:location
             completionHandler:^(NSArray* placemarks, NSError* error){
                 if (placemarks && placemarks.count > 0) {
                     CLPlacemark *topResult = [placemarks objectAtIndex:0];
                     MKPlacemark *placemark = [[MKPlacemark alloc] initWithPlacemark:topResult];
                     MKCoordinateRegion region = self.campusMap.region;
                     region.center = placemark.region.center; //DEPRECATED iOS 7
                     region.span.longitudeDelta /= 1500;
                     region.span.latitudeDelta /= 1500;
                     [self.campusMap setRegion:region animated:NO];
                     [self.campusMap addAnnotation:placemark];
                 }
             }
 ];

但是，当我将我的应用程序升级到 iOS 7 时，placemark.region.center 已被弃用。我应该使用替代品吗？这甚至是在 View 中创建 map 的正确方法吗？

谢谢!!

Answer 1

试试这个:

region.center = [(CLCircularRegion *)placemark.region center];