let sliderMenu = SliderMenuView.init(frame: CGRectMake(0, 20, self.view.frame.width, 44))
// 数据
sliderMenu.titles = ["你","好","Swift","编程","之","美","新生","梦","想"]
// 点击事件代理
sliderMenu.delegate = self
protocol SliderMenuViewDelegate {
      func didSelectedAtIndex(index: NSInteger , animated: Bool)
}
// 设置初始位置
sliderMenu.index = 3

protocol SliderMenuInfoViewDelegate {
        /// 手指还未离开屏幕时的移动
        func collectionView(collectionView: SliderMenuInfoView, 
                            panning pan: UIPanGestureRecognizer)
  
        /// 手指离开屏幕时，targetIndex : 将要停止的到目标Cell的 Index
        func collectionView(collectionView: SliderMenuInfoView, 
                            didEndPan pan: UIPanGestureRecognizer, 
                            to targetIndex: NSInteger)
}

sliderMenu.delegate = self
//MARK: - SliderMenuViewDelegate
    func didSelectedAtIndex(index: NSInteger, animated: Bool) {
        // 点击时使下方collectionView滚动
        collection.scrollToItemAtIndexPath(NSIndexPath.init(forRow: index, inSection: 0), 
                                           atScrollPosition: .CenteredHorizontally, 
                                           animated: animated)
    }

collection.gestureDelegate = self
//MARK: - SliderMenuInfoViewDelegate
    func collectionView(collectionView: SliderMenuInfoView, panning pan: UIPanGestureRecognizer) {
        // 手指移动时改变滑动菜单对应Item缩放系数
        sliderMenu.itemScaledByDistance(Double(pan.translationInView(collectionView).x))
    }

    func collectionView(collectionView: SliderMenuInfoView, 
                        didEndPan pan: UIPanGestureRecognizer, 
                        to targetIndex: NSInteger) {
      
        // 手指离开屏幕后设定滑动菜单对应Item最终状态
        sliderMenu.sliderMenuWillScrollToIndex(targetIndex)
    }