iOS Cloud Development For Dummies by Neal Goldstein

Author:Neal Goldstein
Language: eng
Format: epub
ISBN: 9781118235829
Publisher: Wiley
Published: 2012-07-26T00:00:00+00:00

void (^addFindLocationCompletionHandler)(Annotation *,

NSError *) = ^(Annotation *annotation, NSError *error){

if (error!= nil || annotation == nil) {

NSLog(@”Geocoder Failure! Error code: %u, description: %@, and reason: %@”, error.code,[error localizedDescription],

[error localizedFailureReason]);

}

else {

MKCoordinateRegion region;

region.center.latitude =

annotation.coordinate.latitude;

region.center.longitude =

annotation.coordinate.longitude;

region.span.latitudeDelta = .05;

region.span.longitudeDelta = .05;

[self.mapView setRegion:region animated:NO];

[self.mapView addAnnotation:annotation];

}

};

[[RTModel model] addLocation:self.findLocation

completionHandler:addFindLocationCompletionHandler];

}

}

The message includes a completion block, which I don’t need to explain here, but it’s in the RTModel addLocation:completionHandler: method where the actual geocoding occurs, as you can see bolded in Listing 7-5.

Listing 7-5: The Geocoding Request

- (void)addLocation: (NSString *)findLocation

completionHandler:(void (^)(Annotation *annotation,

NSError* error)) completion {

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