Need To Make Sure NSFetchResultsController Is Called

I have a NSFetchResultsController but I need to make sure 开发者_如何转开发it is called before a line in my viewDidLoad is called.

The line is self.todaySession = (Session *)[fetchedResultsController objectAtIndexPath:0];

Is there a way I can make sure the fetch is called before this line is called?

How about by inserting a line that calls your fetch results controller just above that line?

You will get a crash from that line of code. The integer literal 0 is not an NSIndexPath instance. You probably want something like this:

self.todaySession = (id)[frc objectAtIndexPath:[NSIndexPath indexPathWitRow:0 
                                                                    section:0]];