Add property to customize the animation duration

Author: Richard Février

Sources/FSPagerView.swift

@@ -101,6 +101,17 @@ open class FSPagerView: UIView,UICollectionViewDataSource,UICollectionViewDelega
         }
     }
 
+    @IBInspectable
+    open var automaticSlidingDuration: TimeInterval = 0.3 {
+        didSet {
+            self.cancelTimer()
+            if self.automaticSlidingDuration > 0 {
+                self.startTimer()
+            }
+        }
+    }
+    
+    
     /// The time interval of automatic sliding. 0 means disabling automatic sliding. Default is 0.
     @IBInspectable
     open var automaticSlidingInterval: CGFloat = 0.0 {
@@ -536,7 +547,9 @@ open class FSPagerView: UIView,UICollectionViewDataSource,UICollectionViewDelega
             let item = (indexPath.item+1) % self.numberOfItems
             return self.collectionViewLayout.contentOffset(for: IndexPath(item: item, section: section))
         }()
-        self.collectionView.setContentOffset(contentOffset, animated: true)
+        UIView.animate(withDuration: self.automaticSlidingDuration) {
+            self.collectionView.contentOffset = contentOffset
+        }
     }
 
     fileprivate func cancelTimer() {