pod 'IndexBar'

    let indexBar = IndexBar(frame: CGRect(x: view.bounds.width - 24, y: 0, width: 40, height: view.bounds.height))
    indexBar.configure = { configure in
        configure.sectionWH = 16
        configure.titleFont = UIFont.systemFont(ofSize: 12)
        configure.backgroundColorForSelected = UIColor.color(withHex: "#53ED7C")
    }
    indexBar.setData(sectionTitles, tableView: tableView)
    view.addSubview(indexBar)

    /// section normal title color
    public var titleColor: UIColor = .lightGray
    /// section title font
    public var titleFont: UIFont = UIFont.systemFont(ofSize: 10)
    /// section selected title color
    public var titleColorForSelected: UIColor = .white
    /// section selected background color
    public var backgroundColorForSelected: UIColor = .blue
    /// section width&height
    public var sectionWH: CGFloat = 16
    /// section vertical spacing
    public var sectionSpacing: CGFloat = 4
    /// show bubble view, default is true
    public var showBubble = true
    /// the configure of the bubble view
    public var bubbleConfigure = BubbleConfigure()