Adding animate to top method

SJSegmentedScrollView/Classes/SJSegmentedScrollView.swift

@@ -22,6 +22,13 @@
 
 import UIKit
 
+extension UIScrollView {
+    func scrollToTop(height: CGFloat) {
+        let desiredOffset = CGPoint(x: 0, y: contentInset.top + height)
+        setContentOffset(desiredOffset, animated: true)
+    }
+}
+
 class SJSegmentedScrollView: UIScrollView {
 
     var segmentView: SJSegmentView?
@@ -46,21 +53,20 @@ class SJSegmentedScrollView: UIScrollView {
     var scrollContentView: UIView!
     var contentViewHeightConstraint: NSLayoutConstraint!
     var didSelectSegmentAtIndex: DidSelectSegmentAtIndex?
+    var tableView: UITableView?
 
     override init(frame: CGRect) {
         super.init(frame: frame)
-
         sizeToFit()
         translatesAutoresizingMaskIntoConstraints = false
         showsHorizontalScrollIndicator = true
-        showsVerticalScrollIndicator = true
-        bounces = false
+        showsVerticalScrollIndicator = false
+        bounces = true
+        alwaysBounceVertical = true
 
         addObserver(self, forKeyPath: "contentOffset",
                          options: [NSKeyValueObservingOptions.new, NSKeyValueObservingOptions.old],
                          context: nil)
-
-
     }
 
     required init?(coder aDecoder: NSCoder) {
@@ -268,8 +274,13 @@ class SJSegmentedScrollView: UIScrollView {
                         oldPosition: CGPoint) {
 
         if scrollView.contentOffset.y < 0.0 {
+
+            if scrollView.isKind(of: UITableView.classForCoder()) {
+                self.tableView = scrollView as! UITableView
+                scrollView.isScrollEnabled = false
+            }
+
             if contentOffset.y >= 0.0 {
-
                 var yPos = contentOffset.y - change
                 yPos = yPos < 0 ? 0 : yPos
                 let updatedPos = CGPoint(x: contentOffset.x, y: yPos)
@@ -282,7 +293,6 @@ class SJSegmentedScrollView: UIScrollView {
     func handleScrollDown(_ scrollView: UIScrollView,
                           change: CGFloat,
                           oldPosition: CGPoint) {
-
         let offset = (headerViewHeight! - headerViewOffsetHeight!)
 
         if contentOffset.y < offset {
@@ -306,6 +316,13 @@ class SJSegmentedScrollView: UIScrollView {
 
 		let scrollView = object as? UIScrollView
 		if scrollView == nil { return }
+
+        if (scrollView?.isKind(of: UIScrollView.classForCoder()))! {
+            if scrollView!.contentOffset.y >= headerViewHeight {
+                tableView?.isScrollEnabled = true
+            }
+        }
+
 		if scrollView == self { return }
 
 		let changeValues = change as! [NSKeyValueChangeKey: AnyObject]

SJSegmentedScrollView/Classes/SJSegmentedViewController.swift

@@ -34,6 +34,8 @@ import UIKit
      - parameter index: index of selected segment.
      */
     @objc optional func didMoveToPage(_ controller: UIViewController, segment: UIButton?, index: Int)
+
+    @objc optional func didPullToRefress(_ refreshController: UIRefreshControl, selectedSegmet: UIViewController)
 }
 
 /**
@@ -220,6 +222,8 @@ import UIKit
         }
     }
 
+    open var selectedSegmetViewController: UIViewController?
+
     open var delegate:SJSegmentedViewControllerDelegate?
     var viewObservers = [UIView]()
     var segmentedScrollView = SJSegmentedScrollView(frame: CGRect.zero)
@@ -300,11 +304,27 @@ import UIKit
         segmentedScrollView.segmentViewHeight           = segmentViewHeight
     }
 
+    func pullToRefresh(_ refreshController: UIRefreshControl) {
+        if selectedSegmetViewController == nil {
+            self.selectedSegmetViewController = self.segmentControllers[0]
+        }
+
+        for vc in (selectedSegmetViewController?.childViewControllers)! {
+
+        }
+
+        self.delegate?.didPullToRefress!(refreshController, selectedSegmet: selectedSegmetViewController!)
+    }
+
     /**
      * Private method for adding the segmented scroll view.
      */
     func addSegmentedScrollView() {
 
+        let refreshControl: UIRefreshControl = UIRefreshControl()
+        refreshControl.addTarget(self, action: #selector(pullToRefresh(_:)), for: .valueChanged)
+        segmentedScrollView.insertSubview(refreshControl, at: 0)
+
         let topSpacing = SJUtil.getTopSpacing(self)
         segmentedScrollView.topSpacing = topSpacing
 
@@ -340,6 +360,7 @@ import UIKit
         // selected segment at index
         segmentedScrollView.didSelectSegmentAtIndex = {(segment,index) in
             let selectedController = self.segmentControllers[index]
+            self.selectedSegmetViewController = selectedController
 
             self.delegate?.didMoveToPage?(selectedController, segment: segment!, index: index)
 
@@ -413,6 +434,11 @@ import UIKit
         delegate?.didMoveToPage?(segmentControllers[0],
                                  segment: segment,
                                  index: 0)
+
+    }
+
+    open func animateToTop() {
+        segmentedScrollView.scrollToTop(height: headerViewHeight)
     }
 
 }