致命错误：方法必须符合InfoProvider

Question

自从我使用XLPagerTabStrip以来已经很长时间了，我对此没有任何问题。但是突然间，它如标题中所述崩溃了。

  

致命错误：由提供的每个视图控制器   PagerTabStripDataSource的viewControllers（for :)方法必须符合   IndicatorInfoProvider：文件

该问题已经问过here，但没有一个答案有效。我也已经重新安装了pod。但仍然无法正常工作。

这是我的两个使用XLPagerStrip的Controller，我已经在两个类中都实现了信息提供程序。

class TopUpTransactionHistoryViewController: UIViewController, IndicatorInfoProvider, TopUpTransactionVTADelegate {

    @IBOutlet weak var trxListTableView: UITableView!
    @IBOutlet weak var selectBankBtn: UIButton!
    @IBOutlet weak var selectStatusBtn: UIButton!
    @IBOutlet weak var tableActivityIndicator: UIActivityIndicatorView!

    var topupListVTA: TopUpTransactionVTA?
    var lastItemClicked: TopUpTransactionData?

    // for bank filtering
    var lastSelBank = 0
    var banks = ViseePayFilterData.getBankFilterList()
    // for status filtering
    var lastSelStatus = 0
    var stats = ViseePayFilterData.getStatusFilterList()


    func indicatorInfo(for pagerTabStripController: PagerTabStripViewController) -> IndicatorInfo {
        return IndicatorInfo(title: "Pengisian Saldo")
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        getPendingTransaction()
    }
    }

}

和

class ViseePayViewController: ButtonBarPagerTabStripViewController, GetBalanceDelegate {

    @IBOutlet weak var headerImgBg: UIImageView!
    @IBOutlet weak var balanceLabel: UILabel!
    @IBOutlet weak var accountNumberLabel: UILabel!

    private var getBalanceRequest: GetViseePayBalance?
    private var topUpchildVC: UIViewController?
    var itemInfo = IndicatorInfo(title: "ViseePay")

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        setNavigationTransparent()
        showLogoInNavigation()
    }

    private func showLogoInNavigation() {
        let viseePayLogo = UIImage(named: "logoViseePay")
        let imgView = UIImageView(image: viseePayLogo)
        imgView.dropWhiteShadow(radius: 6.5)
        self.navigationItem.titleView = imgView
    }

    private func setNavigationNormal(){
        self.navigationController?.navigationBar
            .setBackgroundImage(nil, for: UIBarMetrics.default)
    }

    private func makeBgFaded(){
        headerImgBg.backgroundColor = UIColor.colorPrimary()
        let gradient = CAGradientLayer()
        gradient.frame = headerImgBg.bounds
        gradient.colors = [UIColor.white.cgColor, UIColor.clear.cgColor]
        gradient.startPoint = CGPoint(x: 0.0, y: 0.6)
        gradient.endPoint = CGPoint(x: 0.0, y: 1.0)
        headerImgBg.layer.mask = gradient
    }

    private func makeCardRounded(){
        let radius = CGFloat(8)
        cardHeaderWrapperLayout.layer.cornerRadius = radius
        cardHeaderWrapperLayout.layer.masksToBounds = true
        cardHeaderLayout.layer.cornerRadius = radius
        cardHeaderLayout.layer.masksToBounds = true
    }

    private func makeCardBgBlurry(){
        if !UIAccessibilityIsReduceTransparencyEnabled() {
            cardHeaderLayout.backgroundColor = .clear

            let blurEffect = UIBlurEffect(style: .extraLight)
            let blurEffectView = UIVisualEffectView(effect: blurEffect)
            blurEffectView.frame = cardHeaderLayout.bounds
            blurEffectView.alpha = 0.95
            blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
            cardHeaderLayout.insertSubview(blurEffectView, at: 0)        }
    }

    private func showLoadingCardHeader(){
        cardHeaderContent.isHidden = true
        cardHeaderBottom.isHidden = true
        balanceLayout.isHidden = true
        balanceLoadingIndicator.startAnimating()
        cardHeaderLoadingIndicator.startAnimating()
    }
}
extension ViseePayViewController: IndicatorInfoProvider {
    func indicatorInfo(for pagerTabStripController: PagerTabStripViewController) -> IndicatorInfo {
        return itemInfo
    }
}

还有另一种方法可以解决此问题？谢谢！