相关疑难解决方法(0)

我在iOS 5上解析下面的JSON字符串很困难.

{"States": [{"Name": "Arizona","Cities": [{"Name": "Phoenix"}]},{"Name": "California","Cities": [{"Name": "Orange County"},{"Name": "Riverside"},{"Name": "San Diego"},{"Name": "San Francisco"}]},{"Name": "Nevada","Cities": [{"Name": "Las Vegas"}]}]}

这是我的代码:

- (void) parseJson {
NSError *jsonError = nil;
NSData *jsonData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Locations-JSON" ofType:@"rtf"]];

if (jsonData) {
    NSDictionary *jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&jsonError];

    if (jsonError) {
        NSLog(@"JSON Error: %@", [jsonError localizedDescription]);

        return;
    }

    NSLog(@"%@", jsonObjects);
}
}

我一直收到这个错误:

JSON Error: The operation couldn’t be completed. (Cocoa error 3840.)

我很欣赏这方面的一些帮助,因为我显然无法解决这个问题.