Uses alternate app icon for AltStore in My Apps, if one is chosen

AltStore/My Apps/MyAppsViewController.swift

@@ -111,6 +111,8 @@ class MyAppsViewController: UICollectionViewController, PeekPopPreviewing
         }
         
         (self as PeekPopPreviewing).registerForPreviewing(with: self, sourceView: self.collectionView)
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(MyAppsViewController.didChangeAppIcon(_:)), name: UIApplication.didChangeAppIconNotification, object: nil)
     }
     
     override func viewIsAppearing(_ animated: Bool)
@@ -1593,6 +1595,43 @@ private extension MyAppsViewController
             sender.endRefreshing()
         }
     }
+    
+    @objc func didChangeAppIcon(_ notification: Notification)
+    {
+        guard let altStoreApp = InstalledApp.fetchAltStore(in: DatabaseManager.shared.viewContext) else { return }
+        
+        // Remove previous icon from cache.
+        self.activeAppsDataSource.prefetchItemCache.removeObject(forKey: altStoreApp)
+        self.inactiveAppsDataSource.prefetchItemCache.removeObject(forKey: altStoreApp)
+        
+        if let indexPath = self.activeAppsDataSource.fetchedResultsController.indexPath(forObject: altStoreApp)
+        {
+            let indexPath = IndexPath(item: indexPath.item, section: Section.activeApps.rawValue)
+            
+            if #available(iOS 15, *)
+            {
+                self.collectionView.reconfigureItems(at: [indexPath])
+            }
+            else
+            {
+                self.collectionView.reloadItems(at: [indexPath])
+            }
+        }
+        
+        if let indexPath = self.inactiveAppsDataSource.fetchedResultsController.indexPath(forObject: altStoreApp)
+        {
+            let indexPath = IndexPath(item: indexPath.item, section: Section.inactiveApps.rawValue)
+            
+            if #available(iOS 15, *)
+            {
+                self.collectionView.reconfigureItems(at: [indexPath])
+            }
+            else
+            {
+                self.collectionView.reloadItems(at: [indexPath])
+            }
+        }
+    }
 }
 
 extension MyAppsViewController

AltStore/Settings/AltAppIconsViewController.swift

@@ -13,6 +13,11 @@ import AltSign
 import AltStoreCore
 import Roxas
 
+extension UIApplication
+{
+    static let didChangeAppIconNotification = Notification.Name("io.altstore.AppManager.didChangeAppIcon")
+}
+
 private final class AltIcon: Decodable
 {
     var name: String
@@ -190,6 +195,10 @@ extension AltAppIconsViewController
                 alertController.addAction(.ok)
                 self.present(alertController, animated: true)
             }
+            else
+            {
+                NotificationCenter.default.post(name: UIApplication.didChangeAppIconNotification, object: icon)
+            }
             
             if let selectedIndexPath = self.collectionView.indexPathsForSelectedItems?.first
             {

AltStoreCore/Model/InstalledApp.swift

@@ -159,6 +159,16 @@ public extension InstalledApp
     
     func loadIcon(completion: @escaping (Result<UIImage?, Error>) -> Void)
     {
+        if self.bundleIdentifier == StoreApp.altstoreAppID, let iconName = UIApplication.alt_shared?.alternateIconName
+        {
+            // Use alternate app icon for AltStore, if one is chosen.
+            
+            let image = UIImage(named: iconName)
+            completion(.success(image))
+            
+            return
+        }
+        
         let hasAlternateIcon = self.hasAlternateIcon
         let alternateIconURL = self.alternateIconURL
         let fileURL = self.fileURL