问题
Given that the mapkit doesn\'t provide forward geocoding functionality today, can anyone provide help on how I can i use a search bar to return a latitude and longitude coordinate from a user inputted address today. If someone can provide sample code that would be great.
回答1:
iOS 5 now allows for forward Geocoding:
http://developer.apple.com/library/ios/#documentation/UserExperience/Conceptual/LocationAwarenessPG/UsingGeocoders/UsingGeocoders.html#//apple_ref/doc/uid/TP40009497-CH4-SW5
I hope this helps!
回答2:
I've created a forward geocoding API for Google's geocoding server. Check out my blogpost: http://blog.sallarp.com/ipad-iphone-forward-geocoding-api-google/
回答3:
I have created SVGeocoder, a simple forward and reverse geocoder class for iOS. It uses the Google Geocoding API as well and returns an MKPlacemark.
This is how you geocode an address string:
NSString *addressString = @"3245 St-Denis, Montreal"
SVGeocoder *geocodeRequest = [[SVGeocoder alloc] initWithAddress:addressString];
[geocodeRequest setDelegate:self];
[geocodeRequest startAsynchronous];
And you reverse geocode an CLLocationCoordinate2D object like this:
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(45.54181, -73.62928);
SVGeocoder *rGeocoderRequest = [[SVGeocoder alloc] initWithCoordinate:coordinate];
[rGeocoderRequest setDelegate:self];
[rGeocoderRequest startAsynchronous];
The SVGeocoderDelegate offers these 2 methods:
- (void)geocoder:(SVGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark;
- (void)geocoder:(SVGeocoder *)geocoder didFailWithError:(NSError *)error;
回答4:
I have done some small work on forward and reverse geocoding using CLGeocoder in iOS5 CoreLocation framework on github hope it help you. https://github.com/Mangesh20/geocoding
回答5:
It's a known issue with the current version of MapKit. File a bugreport and dupe #6628720 so they make fixing it a priority.
In the meantime, there are forward Geocoding APIs from Google Maps, via Yahoo Placemaker, or Cloudmade.
回答6:
There is also a framework here: https://github.com/tylerhall/CoreGeoLocation
Comment from docs: An Objective GeoCoder and Reverse Geocoder wrapping around Yahoo's Geocoding services or Google's Geo APIs primarily.
回答7:
There is no such functionality in MapKit. The best you can do is to call a third party web service. Google has some APIs to do this and so had Yahoo I think. Both have restrictions on commercial use though, so read the agreement.
来源：https://stackoverflow.com/questions/1140404/forward-geocoding-from-the-iphone