NSSortDescriptor with an array in an object

Question

I want to sort an NSMutableArray by a value which is stored inside a array in the object :)

For better overview i have included the Array. I would like to sort by time (starttijd)

With the NSSortDescriptor i managed to sort by url of status but not by the time.

This is my current code for sorting:

NSSortDescriptor *sortDescriptor; sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"starttuhd" ascending:YES]; NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];

    sortedarray = [alleitems sortedArrayUsingDescriptors:sortDescriptors];
    NSLog(@"Sorted array: %@", sortedarray);

Answer 1

First, if there's only ever 1 starttijd in the array, then why is it an array?

Anyway, you can try this:

NSSortDescriptor *sortDescriptor;
sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"@max.starttuhd" ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
sortedarray = [alleitems sortedArrayUsingDescriptors:sortDescriptors];
NSLog(@"Sorted array: %@", sortedarray);

Basically, @max is one of the KVC collection operators. Since it resolves down to a single element from the array, it may work.