Could not parse JSON DATA from finance google - ios

Question

Can someone please help me in parsing the below jsonData into a nsDictionary object
[ { "id": "22144" ,"t" : "AAPL" ,"e" : "NASDAQ" ,"l" : "111.57"
,"l_fix" : "111.57" ,"l_cur" : "111.57" ,"s": "2" ,"ltt":"4:00PM EST"
,"lt" : "Nov 28, 4:00PM EST" ,"lt_dts" : "2016-11-28T16:00:01Z" ,"c" :
"-0.22" ,"c_fix" : "-0.22" ,"cp" : "-0.20" ,"cp_fix" : "-0.20" ,"ccol"
: "chr" ,"pcls_fix" : "111.79" ,"el": "111.56" ,"el_fix": "111.56"
,"el_cur": "111.56" ,"elt" : "Nov 28, 8:00PM EST" ,"ec" : "-0.01"
,"ec_fix" : "-0.01" ,"ecp" : "-0.01" ,"ecp_fix" : "-0.01" ,"eccol" :
"chr" ,"div" : "0.57" ,"yld" : "2.04" } ]
#define QUERY_PREFIX #"https://www.google.com/finance/info?q=NSE:AAPL"
#define QUERY_SUFFIX #"NSE:AAPL"
#implementation YQL
- (NSDictionary *) query: (NSString *)statement {
NSString *query = [NSString stringWithFormat:#"%#%#%#", QUERY_PREFIX, [statement stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding], QUERY_SUFFIX];
NSData *jsonData = [[NSString stringWithContentsOfURL:[NSURL URLWithString:query] encoding:NSUTF8StringEncoding error:nil] dataUsingEncoding:NSUTF8StringEncoding];
NSString *dataString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSUInteger firstCurlyBracePos = [dataString rangeOfString:#"[" options:0].location;
NSUInteger lastCurlyBracePos = [dataString rangeOfString:#"]" options: NSBackwardsSearch].location;
NSString *jsonString = nil;
if(firstCurlyBracePos != NSNotFound && lastCurlyBracePos != NSNotFound) {
jsonString = [dataString substringWithRange:NSMakeRange(firstCurlyBracePos, (lastCurlyBracePos-firstCurlyBracePos)+1)];
}
NSData *someData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSLog(#"%# Nirmal",jsonString);
NSError *error = nil;
NSDictionary *results = [NSJSONSerialization JSONObjectWithData:someData options:0 error:&error];
NSLog(#"%# Anand",results);
NSString* latestLoans = [results objectForKey:#"el_cur"];
NSLog(#"loans: %#", latestLoans);
if (error) NSLog(#"[%# %#] JSON error: %#", NSStringFromClass([self class]), NSStringFromSelector(_cmd), error.localizedDescription);
return results;
}
#end
Terminating app due to uncaught exception
'NSInvalidArgumentException', reason: '-[__NSSingleObjectArrayI
objectForKey:]: unrecognized selector sent to instance 0x61800000d010'

Answer 1

The JSON you're trying to parse is an array, not an object, as denoted by the enclosing square brackets. So NSJSONSerialization is going to return an NSArray here, not an NSDictionary. Since it seems like there is only one object in this array, you can access it like so:
NSArray *results = [NSJSONSerialization JSONObjectWithData:someData options:0 error:&error];
NSDictionary *object = results.firstObject;
NSString *latestLoans = object["el_cur"];