从文本字段获取值以传递给CLGeocoder

Question

I'm trying to display the latitude and longitude values of an address which the user has input into some text fields. I would ideally like the user to input the address, then click a button which will find the lat/lon and feed these values into two text fields in the same view. I'm just not sure how I call the address values of these text fields in my code.

Here's what I have so far

-(IBAction)getLatLon:(id)sender{

CLGeocoder *geocoder = [[CLGeocoder alloc] init]; 
NSString *addressString = @"%@address, city, county, county, postcode";
[geocoder geocodeAddressString:addressString inRegion:nil completionHandler:^(NSArray* placemarks, NSError* error)
 {
     for (CLPlacemark * aPlacemark in placemarks)
     {                    // Process the placemark.
         NSLog(@"Got Placemark : %@", aPlacemark);     

     }
 }];

}

It works when I hard code a value you in for example

NSString *addressString = @"Belfast";

I know I've probably tried to call the values in all wrong but my head is completely fried at this stage!

My Textfields are named as such

addressText.text
cityText.text
countyText.text
countryText.text
postcodeText.text

Answer 1

You need to make use of the stringWithFormat: method. Put in placeholders in your string (%@) for each string you want to use, and then list out the arguments after (are you familiar with printf ?)