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iOS Build a Playlist Browser with Objective-C Managing Playlist Data Creating UIImageViews

How to initialize an UIImageView?

I am very confused with all the syntax, types, instances, properties and stuff.

As this coding challenge was asking, I am supposed to allocate and initialize the userProfilePhoto. In my code as attached, I put down two ways, which one is close to the correct method?

Thanks in advance!

Treehouse.h
#import <Foundation/Foundation.h>

@interface Treehouse : NSObject

@property (strong, nonatomic) NSDictionary *friends;

@end
Treehouse.m
#import "Treehouse.h"

@implementation Treehouse

- (instancetype)init
{
    self = [super init];
    if (self) {
        _friends = @{@"firstName": @"Susan",
                     @"lastName": @"Olson",
                     @"profilePicture": @"susan_profile.png"
                     };
    }
    return self;
}



@end
User.h
#import <Foundation/Foundation.h>

@interface User : NSObject

@property (nonatomic, strong) NSString *firstName;
@property (nonatomic, strong) NSString *lastName;
@property (nonatomic, strong) NSString *profileImageName;
@property (nonatomic, strong) UIImage *profileImage;
@property (nonatomic, strong) UIImageView *userProfilePhoto;

@end
User.m
#import "User.h"
#import "Treehouse.h"

@implementation User

- (instancetype)init
{
    self = [super init];
    if (self) {
        Treehouse *treehouse = [[Treehouse alloc] init];
        NSDictionary *friendsDict = treehouse.friends;

        _firstName = [friendsDict objectForKey:@"firstName"];
        _lastName = [friendsDict objectForKey:@"lastName"];

        _profileImageName = [friendsDict objectForKey:@"profilePicture"];

        _profileImage = [UIImage imageNamed:_profileImageName];

        _userProfilePhoto = [UIImageView _profileImage];
    }
    return self;
}

- (instancetype)initWithImage:(UIImageView *)_profileImage{
  UIImageView *userProfilePhoto = profileImage;
  return self;
}


@end