Question

How do I get a CFGregorianDate (currentSelectDate) into an NSDictionary?

I get this error with the code below:

Sending ‘CFGregorianDate’ to parameter of incompatible type ‘id’

My code:

NSDictionary *userInfo = [NSDictionary dictionaryWithObject: currentSelectDate forKey:@"currentSelectDate"];

Answer 1

CFGregorianDate is basically a C structure. First create a NSData instance to hold its bytes:

NSData *data = [NSData dataWithBytes:&currentSelectDate length:sizeof(CFGregorianDate)];

and then place that in your dictionary instead:

NSDictionary *userInfo = [NSDictionary dictionaryWithObject:data forKey:@"currentSelectDate"];

To retrieve it, let’s assume you have a CFGregorianDate allocated (in this case, on the stack), again called currentSelectDate:

NSData *data = [userInfo objectForKey:@"currentSelectDate"];
[data getBytes:&currentSelectDate length:sizeof(CFGregorianDate)];

Best wishes to you in your endeavors.