both using .default to have the same cache

Author: krugerk

BeeSwift/Components/GoalImageView.swift

@@ -7,7 +7,7 @@ import OSLog
 /// Shows the current graph for a goal
 /// Handles placeholders for loading and queued states, and automatically updates when the goal changes
 class GoalImageView: UIView {
-  private static let downloader = ImageDownloader(imageCache: AutoPurgingImageCache())
+  private static let downloader = ImageDownloadService.shared.downloader
   private let logger = Logger(subsystem: "com.beeminder.com", category: "GoalImageView")
 
   private let imageView = UIImageView()

BeeSwift/Components/ImageDownloadService.swift

@@ -0,0 +1,10 @@
+// Part of BeeSwift. Copyright Beeminder
+
+import AlamofireImage
+
+final class ImageDownloadService {
+  static let shared = ImageDownloadService()
+  let downloader: ImageDownloader
+
+  private init() { downloader = ImageDownloader.default }
+}

BeeSwift/Gallery/GalleryViewController.swift

@@ -503,14 +503,13 @@ extension GalleryViewController: UICollectionViewDelegate {
   }
 }
 
-// MARK: - Prefetching (using AlamofireImage's ImageDownloader)
 extension GalleryViewController: UICollectionViewDataSourcePrefetching {
   func collectionView(_ collectionView: UICollectionView, prefetchItemsAt indexPaths: [IndexPath]) {
     let urls = indexPaths.compactMap { indexPath -> URL? in
       let goal = fetchedResultsController.object(at: indexPath)
       return try? goal.thumbUrl.asURL()
     }
-    let downloader = ImageDownloader.default
+    let downloader = ImageDownloadService.shared.downloader
     urls.forEach { downloader.download(URLRequest(url: $0), completion: { _ in }) }
   }
 }