Search on Google Map Sdk - ios

Question

I need to implement the map view in my app to locate the required place. I had tried with the SVGeocoder concept.
[SVGeocoder geocode:searchfield.text
completion:^(NSArray *placemarks, NSHTTPURLResponse *urlResponse, NSError *error) {
}
But suppose I am trying to search any restaurent then the result is nil.
I was looking on Google map sdk but don't know how to do search functionality on GMSCameraPosition class.
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitude
longitude:longitude
zoom:5];
how to search with the address using google sdk.
Thanks in advance.

Answer 1

If I understood it correctly, you need the location co-ordinates from a address string. Its Forward geo-coding. You can take a look at Google's free api for this: Link1
You will need a API key from your google account to access this api and there is way to select a free or business plan depending on your number of requests.
You need to use a CLLocation object for getting co-ordinates from your address. I wrote a similar function. CLLocation* temp_location=[[CLLocation alloc]init];
temp_location=[GeoCoding findAddressCordinates:sourceAddressTxtField.text];
// Class GeoCoding to find Co-ordinates
#import <Foundation/Foundation.h>
#interface GeoCoding : NSObject {
}
+(CLLocation*)findAddressCordinates:(NSString*)addressString;
#end
#import "GeoCoding.h"
#import <CoreLocation/CLAvailability.h>
#implementation GeoCoding
+(CLLocation*)findAddressCordinates:(NSString*)addressString {
CLLocation *location;
NSString *url = [NSString stringWithFormat:#"http://maps.googleapis.com/maps/api/geocode/json?address=%#&sensor=true", addressString];
url = [url stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
NSURL *wurl = [NSURL URLWithString:url];
NSData *data = [NSData dataWithContentsOfURL: wurl];
// Fail to get data from server
if (nil == data) {
NSLog(#"Error: Fail to get data");
}
else{
// Parse the json data
NSError *error;
NSDictionary *json = [NSJSONSerialization
JSONObjectWithData:data
options:kNilOptions
error:&error];
// Check status of result
NSString *resultStatus = [json valueForKey:#"status"];
// If responce is valid
if ( (nil == error) && [resultStatus isEqualToString:#"OK"] ) {
NSDictionary *locationDict=[json objectForKey:#"results"] ;
NSArray *temp_array=[locationDict valueForKey:#"geometry"];
NSArray *temp_array2=[temp_array valueForKey:#"location"];
NSEnumerator *enumerator = [temp_array2 objectEnumerator];
id object;
while ((object = [enumerator nextObject])) {
double latitude=[[object valueForKey:#"lat"] doubleValue];
double longitude=[[object valueForKey:#"lng"] doubleValue];
location=[[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
NSLog(#"CLLocation lat is %f -------------& long %f",location.coordinate.latitude, location.coordinate.longitude);
}
}
}
return location;
}
#end
You can then use this co-ordinates in your Google Map to focus your camera position.