willDisplay cell: FSPagerViewCell, forItemAt index

[rgmyyw]

pagerView(_:willDisplay:forItemAt:) This function is called 2 time

Expected a index, not two indexes, When the transformer is crossFading

    lazy var pagerView: FSPagerView = {
        let view = FSPagerView(frame: .zero)
        view.dataSource = self
        view.delegate = self
        view.register(ExploreBannerCell.self, forCellWithReuseIdentifier: ExploreBannerCell.defaultReuseIdentifier)
        view.isInfinite = true
        view.bounces = false
        view.automaticSlidingInterval = 3
        view.interitemSpacing = 0
        view.transformer = FSPagerViewTransformer(type: .crossFading)
        view.tg_width.equal(.fill)
        view.tg_height.equal(.fill)
        return view
    }()

    func pagerViewDidEndDecelerating(_ pagerView: FSPagerView) {
        logDebug("\(#function ) index: \(pagerView.currentIndex)")
    }


    func pagerView(_ pagerView: FSPagerView, willDisplay cell: FSPagerViewCell, forItemAt index: Int) {
        logDebug("\(#function ) index: \(index)")
    }

    
    func pagerView(_ pagerView: FSPagerView, didEndDisplaying cell: FSPagerViewCell, forItemAt index: Int) {
        logDebug("\(#function ) index: \(index)")
    }


2022-06-20 16:00:02.910161+0800 MetaRent[41044:7781035] pagerView(_:willDisplay:forItemAt:) index: 2
2022-06-20 16:00:02.911786+0800 MetaRent[41044:7781016] pagerView(_:willDisplay:forItemAt:) index: 3
2022-06-20 16:00:05.909641+0800 MetaRent[41044:7781030] pagerView(_:didEndDisplaying:forItemAt:) index: 0
2022-06-20 16:00:05.910420+0800 MetaRent[41044:7781035] pagerView(_:didEndDisplaying:forItemAt:) index: 4
2022-06-20 16:00:08.909986+0800 MetaRent[41044:7781030] pagerView(_:willDisplay:forItemAt:) index: 4
2022-06-20 16:00:08.910604+0800 MetaRent[41044:7781016] pagerView(_:willDisplay:forItemAt:) index: 0
2022-06-20 16:00:11.910524+0800 MetaRent[41044:7781035] pagerView(_:didEndDisplaying:forItemAt:) index: 1
2022-06-20 16:00:11.911241+0800 MetaRent[41044:7781016] pagerView(_:didEndDisplaying:forItemAt:) index: 2
2022-06-20 16:00:14.912001+0800 MetaRent[41044:7781016] pagerView(_:willDisplay:forItemAt:) index: 1
2022-06-20 16:00:14.913418+0800 MetaRent[41044:7781030] pagerView(_:willDisplay:forItemAt:) index: 2
2022-06-20 16:00:17.910743+0800 MetaRent[41044:7781035] pagerView(_:didEndDisplaying:forItemAt:) index: 3
2022-06-20 16:00:17.911274+0800 MetaRent[41044:7781016] pagerView(_:didEndDisplaying:forItemAt:) index: 4
2022-06-20 16:00:20.894267+0800 MetaRent[41044:7781016] pagerView(_:willDisplay:forItemAt:) index: 3
2022-06-20 16:00:20.894750+0800 MetaRent[41044:7781030] pagerView(_:willDisplay:forItemAt:) index: 4
2022-06-20 16:00:23.894119+0800 MetaRent[41044:7781030] pagerView(_:didEndDisplaying:forItemAt:) index: 0
2022-06-20 16:00:23.894442+0800 MetaRent[41044:7781016] pagerView(_:didEndDisplaying:forItemAt:) index: 1
2022-06-20 16:00:26.897322+0800 MetaRent[41044:7781016] pagerView(_:willDisplay:forItemAt:) index: 0
2022-06-20 16:00:26.898987+0800 MetaRent[41044:7781035] pagerView(_:willDisplay:forItemAt:) index: 1
2022-06-20 16:00:29.896391+0800 MetaRent[41044:7781030] pagerView(_:didEndDisplaying:forItemAt:) index: 2
2022-06-20 16:00:29.896993+0800 MetaRent[41044:7781035] pagerView(_:didEndDisplaying:forItemAt:) index: 3
2022-06-20 16:00:32.897715+0800 MetaRent[41044:7781030] pagerView(_:willDisplay:forItemAt:) index: 2
2022-06-20 16:00:32.899324+0800 MetaRent[41044:7781033] pagerView(_:willDisplay:forItemAt:) index: 3
2022-06-20 16:00:35.896129+0800 MetaRent[41044:7781030] pagerView(_:didEndDisplaying:forItemAt:) index: 4
2022-06-20 16:00:35.896380+0800 MetaRent[41044:7781033] pagerView(_:didEndDisplaying:forItemAt:) index: 0