CollectionView/DetailViewController.m

/*
Copyright (C) 2015 Apple Inc. All Rights Reserved.
See LICENSE.txt for this sample’s licensing information
 
Abstract:
The secondary detailed view controller for this app.
*/
 
#import "DetailViewController.h"
 
 
@interface DetailViewController ()
 
@property (nonatomic, weak) IBOutlet UIImageView *imageView;
 
@end
 
@implementation DetailViewController
 
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    self.imageView.image = self.image;
}
 
@end