         回收
      */
     public func finishRefresh()->Void{
+        refreshHeader?.activityIndicator.stopAnimating()
         
         UIView.animateWithDuration(0.5, delay: 0, options: .CurveEaseInOut, animations: {
             self.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
             self.contentOffset = CGPointMake(0, 0)
+            
         }) { (finish) in
+            self.refreshHeader?.arrowImageView.hidden = false
             self.refreshHeader?.state = .PullDownToRefresh
         }
     }

    var timeLabel:UILabel
    let arrowImageURL:String = "http://ww4.sinaimg.cn/mw690/47449485jw1f4wq45lqu6j201i02gq2p.jpg"
    var arrowImageView:UIImageView
    
    override init(frame: CGRect) {
        self.refreshBlock = {}

            }else{
                if state == .ReleaseToRefresh {
                    self.state = .Loading
                    self.arrowImageView.hidden = true
                    self.titleLabel.text = loadingText
                    refreshBlock()
                    self.scrollView?.startRefresh()
                    activityIndicator.startAnimating()
                }


