修正超时逻辑问题

MRFramework/MRFramework/UIControls/Album/MRAlbumDetailViewController.swift

@@ -26,7 +26,7 @@ open class MRAlbumDetailViewController: UIViewController {
     public static var checkedOptions: MRCheckBoxOptions = .defaultCheck(checkboxSize)
     
     public var confirm: ((_ vc: MRAlbumDetailViewController, _ isSelected: Bool) -> Void)?
-    public var requestTimeout: TimeInterval = 20
+    public var requestTimeout = 20
     
     public var assest: PHAsset!
     public var isSelected = false
@@ -117,15 +117,21 @@ extension MRAlbumDetailViewController {
             self.requestID = self.imageCache.requestImage(for: self.assest, targetSize: PHImageManagerMaximumSize, contentMode: .default, options: options, resultHandler: { (image, _) in
                 DispatchQueue.main.async {
                     ToastView.hide()
+                    self.requestID = nil
                     completion(image, nil)
                 }
             })
-            weak var weakSelf = self
-            self.countdownor = self.requestTimeout.countdown({ (_, _, _, sec) in
-                if sec <= 0, let `self` = weakSelf, let id = self.requestID {
-                    self.imageCache.cancelImageRequest(id)
-                }
-            })
+        }
+        startTimeoutCheck()
+    }
+    
+    private func startTimeoutCheck() {
+        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + DispatchTimeInterval.seconds(self.requestTimeout)) {
+            if let id = self.requestID {
+                self.imageCache.cancelImageRequest(id)
+                self.requestID = nil
+                ToastView.hide()
+            }
         }
     }