Question

I’m working with facebook connect and trying to handle the JSON object that i’m receiving.
I invoked the requstWithGraphPath method and need to get back a JSON object,
tried to parse it and getting an error:

SBJSON *parser = [[SBJSON new] autorelease];
NSData *data = [[NSData alloc] initWithData:result];
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; -> in this line - "[__NSCFDictionary length]: unrecognized selector sent to instance"
NSArray *events = [parser objectWithString:jsonString];

What’s the problem?
Can I get the string in an other way or parse the object differently?

Thanks.

Answer 1

If you are working with the delegate callback

- (void)request:(FBRequest *)request didLoad:(id)result;

the parsing work has been done for you. Traverse the NSDictionary or NSArray to find the data you are looking for. If you are working with the delegate callback

- (void)request:(FBRequest *)request didLoadRawResponse:(NSData *)data;

you should initialize an NSString with the data, and use the category method that SBJSON adds to NSString for creating an id. That is assuming the data is data that constructs a string.

NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
id result = [jsonString JSONValue];