CharlesAE

class TodayViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, NCWidgetProviding {
    
    //Creating the collectionview and giving it some properties
    let userCollectionView: UICollectionView = {
      //The collectionView flow layout
        let layout = UICollectionViewFlowLayout()
        layout.minimumInteritemSpacing = 1.0
        let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
        cv.translatesAutoresizingMaskIntoConstraints = false
        cv.backgroundColor = .clear

CharlesAE

import UIKit

class UserCell: UICollectionViewCell {
    //Creating the ImageView, assigning it an image from the assets folder
    let userImage: UIImageView = {
        let iv = UIImageView()
        iv.contentMode = .scaleAspectFit
        iv.image = #imageLiteral(resourceName: "user")
        iv.translatesAutoresizingMaskIntoConstraints = false
        return iv

CharlesAE

import Foundation
import UIKit

extension UIView {
    public func addConstraintsWithFormat(_ format: String, views: UIView...) {
        
        var viewsDictionary = [String: UIView]()
        for (index, view) in views.enumerated() {
            let key = "v\(index)"
            viewsDictionary[key] = view

CharlesAE

//..
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        
        //Manually create the application window
        window = UIWindow(frame: UIScreen.main.bounds)
        
        //Custom theming on the application
        UIApplication.shared.statusBarStyle = .lightContent
        application.isStatusBarHidden = false
        UINavigationBar.appearance().isTranslucent = false