切换素材后刷新字幕

BFRecordScreenKit/Classes/RecordScreen/Controller/BFRecordScreenController.swift

@@ -1824,6 +1824,9 @@ extension BFRecordScreenController: UICollectionViewDelegate, UICollectionViewDa
             if changeItemHandle != nil {
                 changeItemHandle!(page)
             }
+            
+            //add by ak 切换后刷新字幕
+            updateSubtitle(time: currentAssetProgress)
         }
     }