Reputation: 161

Google Places API returning no results

I am following this tutorial : http://www.raywenderlich.com/13160/using-the-google-places-api-with-mapkit, but for some reason my app is returning:

Google Data: ( )

Here is my .h file:

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>

#define kBgQueue dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)

#define kGOOGLE_API_KEY @"API PLACED HERE, LEFT BLANK FOR STACKOVERFLOW"

@interface ViewController : UIViewController <MKMapViewDelegate,     CLLocationManagerDelegate>
{
CLLocationManager *locationManager;
CLLocationCoordinate2D currentCentre;
int currenDist;
}

@property (strong, nonatomic) IBOutlet MKMapView *mapView;
@end

and my implementation file:

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

//Make this controller the delegate for the map view.
self.mapView.delegate = self;

// Ensure that you can view your own location in the map view.
[self.mapView setShowsUserLocation:YES];

//Instantiate a location object.
locationManager = [[CLLocationManager alloc] init];

//Make this controller the delegate for the location manager.
[locationManager setDelegate:self];

//Set some parameters for the location object.
[locationManager setDistanceFilter:kCLDistanceFilterNone];
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)toolBarButtonPress:(UIBarButtonItem *)sender {
UIBarButtonItem *button = (UIBarButtonItem *)sender;
NSString *buttonTitle = [button.title lowercaseString];
[self queryGooglePlaces:buttonTitle];

}

-(void) queryGooglePlaces: (NSString *) googleType {
NSString *url = [NSString     stringWithFormat:@"https://maps.googleapis.com/maps/api/place/search/json?  location=%f,%f&radius=%@&types=%@&sensor=true&key=%@", currentCentre.latitude, currentCentre.longitude, [NSString stringWithFormat:@"%i", currenDist], googleType,     kGOOGLE_API_KEY];
url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSLog(@"%@", url);

//Formulate the string as a URL object.
NSURL *googleRequestURL=[NSURL URLWithString:url];

// Retrieve the results of the URL.
dispatch_async(kBgQueue, ^{
    NSData* data = [NSData dataWithContentsOfURL: googleRequestURL];
    [self performSelectorOnMainThread:@selector(fetchedData:) withObject:data  waitUntilDone:YES];
});
}

-(void)fetchedData:(NSData *)responseData {
//parse out the json data
NSError* error;
NSDictionary* json = [NSJSONSerialization
                      JSONObjectWithData:responseData
                      
                      options:kNilOptions
                      error:&error];

//The results from Google will be an array obtained from the NSDictionary object with the  key "results".
NSArray* places = [json objectForKey:@"results"];

//Write out the data to the console.
NSLog(@"Google Data: %@", places);
}

-(void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated {
//Get the east and west points on the map so you can calculate the distance (zoom level)  of the current map view.
MKMapRect mRect = self.mapView.visibleMapRect;
MKMapPoint eastMapPoint = MKMapPointMake(MKMapRectGetMinX(mRect),  MKMapRectGetMidY(mRect));
MKMapPoint westMapPoint = MKMapPointMake(MKMapRectGetMaxX(mRect), MKMapRectGetMidY(mRect));

//Set your current distance instance variable.
currenDist = MKMetersBetweenMapPoints(eastMapPoint, westMapPoint);

//Set your current center point on the map instance variable.
currentCentre = self.mapView.centerCoordinate;
}

#pragma mark - MKMapViewDelegate methods.
- (void)mapView:(MKMapView *)mv didAddAnnotationViews:(NSArray *)views {
MKCoordinateRegion region;
region =  MKCoordinateRegionMakeWithDistance(locationManager.location.coordinate,1000,1000);


[mv setRegion:region animated:YES];
}

@end

My console log of the final formatted URL is :

https://maps.googleapis.com/maps/api/place/search/json? location=HIDDENLAT,HIDDENLONG&radius=995&types=bar&sensor=true&key=HIDDENAPI

I have replaced the generated lat, long and API values above but they were returned as the correct values?

Another SO answer I found said to add the:

url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

which I did but this has not worked for me?

Why isn't this working?

Upvotes: 2

Google Places API returning no results

Answers (2)

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