Fixes close button icon distortion

This bug was caused by an inaccessible property of UIButton. Since the button was setup in IB using a system button with a custom icon, it’s imageView property is only accessible in code. The “view” content-mode in IB is misleading here, as it affects the UIButton.view NOT UIButton.ImageView.

- Set content-mode of the buttons imageview to scaleAspectFit.

iOS/Article/ImageViewController.swift

@@ -10,6 +10,8 @@ import UIKit
 
 class ImageViewController: UIViewController {
 
+	
+	@IBOutlet weak var closeButton: UIButton!
 	@IBOutlet weak var shareButton: UIButton!
 	@IBOutlet weak var imageScrollView: ImageScrollView!
 	@IBOutlet weak var titleLabel: UILabel!
@@ -26,6 +28,8 @@ class ImageViewController: UIViewController {
 	override func viewDidLoad() {
         super.viewDidLoad()
 		
+		closeButton.imageView?.contentMode = .scaleAspectFit
+		
         imageScrollView.setup()
         imageScrollView.imageScrollViewDelegate = self
         imageScrollView.imageContentMode = .aspectFit
@@ -58,6 +62,9 @@ class ImageViewController: UIViewController {
 	}
 	
 	@IBAction func done(_ sender: Any) {
+		if let button = sender as? UIButton {
+			print(button.frame.size)
+		}
 		dismiss(animated: true)
 	}