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iOS Build a Playlist Browser with Swift Building the Music Library and Playlist Models Creating UIImageView instances

carlos sulsona
carlos sulsona
10,378 Points
Posted by carlos sulsona
carlos sulsona
10,378 Points

creating UIIamgeview instances? i'm confused help please

In our Treehouse model struct below we have a property named friends. It is a dictionary that holds information about our friends including their profile pictures. In the ViewController class, using the key profilePicture, retrieve the image name as a string from the dictionary and assign it to a constant named profileImageName. I’ve already created an instance of the Treehouse struct and stored a reference to the friends library in a constant named friends for you to use.

Once you have the image name, create an instance of UIImage using the image name and store it in a constant called profilePicture.

ImageViews.swift 
import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let friends = Treehouse().friends

        //Add your code below


    }

}
Treehouse.swift 
struct Treehouse {
    let friends = [
        "firstName": "Susan",
        "lastName": "Olson",
        "profilePicture": "susan_profile.png"
    ]
}

3 Answers

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi Carlos,

The challenge itself want's you to create an UIImage instance which is different from an UIImageView which can contain many UIImage instances, for this challenge you need to do the following:

  1. Assign the value for the key profilePicture in the friends dictionary to a constant called profileImageName
  2. Create a new instance of UIImage using the named convenience constructor and the profileImageName constant we just set, we also need to assign our UIImage instance to another constant called profilePicture

The final result will look like the below.

let friends = Treehouse().friends
let profileImageName = friends["profilePicture"]
let profilePicture = UIImage(named: profileImageName)

Hope that helps.

Frankz Kastner
Frankz Kastner
4,188 Points

let profileImageName = friends["profilePicture"] as String!

Matthew Nos
Matthew Nos
4,982 Points
Matthew Nos
Matthew Nos
4,982 Points

Good answer... addendum:

<code> let profileImageName = friends["profilePicture"] as String! </code>