Now, we are going to display some pictures that were taken on the chosen city. As you know, we can use a table view for it. But, for this scenario, Apple has something more appropriate called the collection view.
Create a new file in the ViewControllers group called PicturesViewController.swift. Start by creating a class that inherits from UICollectionViewController:
import UIKit
class PicturesViewController: UICollectionViewController {This class will need a special nested class to store the pictures' information, as we need to keep the URL, the title, the pictures ID, and the local path where it is stored:
private class PhotoInfo {
var title:String!
var url:String!
var localPath:String!
var id:String!
}As properties, we just need the cityInfo and the array of PhotoInfo:
var cityInfo:CityInfo!
private var photos = [PhotoInfo]()After this, we can initialize the array by requesting Flickr for a list of pictures and then...