Convert an iOS objective c object to a JSON string

Question

I have an objective C class like,

@interface message : NSObject {
 NSString *from;
 NSString *date;
 NSString *msg;
}

I have an NSMutableAr

Answer 1

Note: This will only work with serializable objects. This answer was provided above in an edit to the question itself, but I always look for answers in the "answers" section myself ;-)

- (NSString*) convertObjectToJson:(NSObject*) object
{
    NSError *writeError = nil;

    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:object options:NSJSONWritingPrettyPrinted error:&writeError];
    NSString *result = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

    return result;
}