Get coordinates by giving name of place in iphone - iphone

Question

Is it possible to get coordinates by giving name of a place in iPhone? I don't want to use any Web Service as they have few limitations. Can i do it using iPhone SDK?
Thanks in advance.

Answer 1

As #raj2raaz have mentioned, we can'nt get coordinates by just specify the name of the place, you must have to use web servics in iPhone to get coordinates.
http://iphonesdksnippets.com/post/2010/02/15/Get-Coordinates-from-Address.aspx

Answer 2

The short answer is no, you can't give an address and get the longitude / latitude position. Several people have written libraries that use the different web services, see this answer for details: Forward geocoding from the iPhone .
I know that you said you don't want to use various web services, but, well, you can't get everything for free. Somebody's CPU cycles are going to have to do a search. Most of them seem to me to have terms that are acceptable for most applications.

Answer 3

Yes, it's possible, but you have to do some work. I am currently putting this effort in one of my project. The GeoNames geographical database covers all countries and contains over eight million placenames that are available for download free of charge. I am adding their cites with population over 1,000 3.9M zip file to my project. It's contain long/lat of each city. I am going to parse each city into a custom NSObject and load them into Core Data.
In my project, instead of doing a city name search, I am going to find the closet city to a particular lat/long coordinate. Haversine formula is used to calculate the distance between two points on a sphere. Here are the formula written in Objective-C and Perl.
My current progress of parsing that data can be found here. I still have work to complete.

Answer 4

CLGeocoder *geocoder = [[CLGeocoder alloc] init];
[geocoder geocodeAddressString:YOUR_LOCATION completionHandler:^(NSArray* placemarks, NSError* error)
{
NSLog(#"completed");
if ( error )
{
NSLog(#"error = %#", error );
}
else
{
//Here you get information about the place in placemarks array
}
}];

Answer 5

you can get the coordinates by calling this method .this method requires the address(name of place).
-(CLLocationCoordinate2D) addressLocation:(NSString *)addrss {
NSString *urlString = [NSString stringWithFormat:#"http://maps.google.com/maps/geo?q=%#&output=csv",
[addrss stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]];
NSArray *listItems = [locationString componentsSeparatedByString:#","];
double latitude = 0.0;
double longitude = 0.0;
if([listItems count] >= 4 && [[listItems objectAtIndex:0] isEqualToString:#"200"]) {
latitude = [[listItems objectAtIndex:2] doubleValue];
longitude = [[listItems objectAtIndex:3] doubleValue];
}
else {
//Show error
}
CLLocationCoordinate2D location;
location.latitude = latitude;
location.longitude = longitude;
return location;
}