CODEWITHSUNDEEP
iosgoogle-places-api
chaitanya.varanasi
chaitanya.varanasi

Reputation: 956

Google Places API Not returning a response

I am following a Tutorial online and I have 2 methods that submit a query to Google Places API. I am trying to get a response back unfortunately, it is not working. I have a few debug numbers in the code. However, here is the code.

-(void) queryGooglePlaces{
    NSString *url = @"https://maps.googleapis.com/maps/api/place/search/json?location=-33.8670522,151.1957362&radius=500&types=food&name=harbour&sensor=false&key=myKey";

    //Formulate the string as a URL object.
    NSURL *googleRequestURL=[NSURL URLWithString:url];
    NSLog(@"1.5");
    // Retrieve the results of the URL.
    dispatch_async(kBgQueue, ^{
        NSData* data = [NSData dataWithContentsOfURL: googleRequestURL];
        [self performSelectorOnMainThread:@selector(fetchedData:) withObject:data waitUntilDone:YES];
    });
    NSLog(@"2");
}

-(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);
    NSLog(@"3");
}

On the log the output goes as such: 

2012-08-03 16:40:12.411 sCode[25090:1a303] 1.5
2012-08-03 16:40:12.411 sCode[25090:1a303] 2
2012-08-03 16:40:12.512 sCode[25090:1a303] 4
2012-08-03 16:40:12.751 sCode[25090:1a303] Google Data: (
)
2012-08-03 16:40:12.751 sCode[25090:1a303] 3
2012-08-03 16:40:13.628 sCode[25090:1a303] 1
2012-08-03 16:40:14.129 sCode[25090:1a303] 4

Can anybody tell me whats going wrong so I didn not get a response.? yes I did call [self queryGooglePlaces]; in my ViewDidLoad method Appreciate the help guys! Sorry if im too verbose..just a starter trying to learn!

Upvotes: 5

Views: 1486

Answers (1)

Mark Adams
Mark Adams

Reputation: 30846

Given the provided code, my best guess is that you need to encode your URL string by adding percent escapes. Try creating url like this...

NSString *url = @"https://maps.googleapis.com/maps/api/place/search/json?location=-33.8670522,151.1957362&radius=500&types=food&name=harbour&sensor=false&key=myKey";
url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

You would typically make that into one line, but have shown it as two lines for clarity. This will convert those = and & into properly escaped characters to provide a valid URL.

Upvotes: 2

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