Question

I am trying to get the system time in milliseconds.
For that I have declared:

 NSNumber *createdTimeInMilliSec; //in class declaration

and in one of my instance functions, I doing:

 self.createdTimeInMilliSec= ([NSDate timeIntervalSinceReferenceDate]*1000); //ERROR: incompatible type for argument 1 of 'setCreatedTimeInMilliSec:'

timeIntervalSinceReferenceDate returns in NSTimeInterval, so how to convert that into NSNumber? Or what I am doing wrong?

Answer 1

NSTimeInterval is typedefed as follow : typedef double NSTimeInterval;.

To create a NSNumber with, use :

NSNumber *n = [NSNumber numberWithDouble:yourTimeIntervalValue];