Question

当我单击后退按钮时，我需要更新我的viewPagerController。主视图中的我的视图分页器控制器。我在主视图上使用容器视图。我需要重新加载并更新我的viewpagercontroller.when，当我单击后退按钮时，我的主视图containerview需要update.my容器视图包含viewpagercontroller。我正打算删除Viewpager页面。但是，当我使用后退按钮发送数据并删除Viewpager控制器页面变量数据时，协议无法正常工作。请为viewpagercontroller视图删除提供帮助。

@IBAction func backBtn(_ sender: Any) {
    let vc = storyboard?.instantiateViewController(withIdentifier: "main") as! ViewController
    self.navigationController?.popToRootViewController(animated: true)
}

//viewpagecontroller code

class PageViewController: UIPageViewController, UIPageViewControllerDelegate, UIPageViewControllerDataSource {
    var deleteVCIndex:Int!
    let locationManager = CLLocationManager()
    let apiKey = "2498ab54f99be8656cc0bea1f57434ed"
    var lat:Double = 27.34
    var lon:Double = 104.33
    var activityIndicator: NVActivityIndicatorView!
    var textLabel = UILabel()
    /// total viewpager page array
    lazy var VCArr: [UIViewController] = Utility.shareInstance.VCArr
    /// uipageControl
    var pageControl = UIPageControl()
    var pagecount = 0

    func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
        guard let viewControllerIndex = VCArr.firstIndex(of: viewController) else {
            return nil
        }

        let nextIndex = viewControllerIndex - 1
        guard nextIndex > -1 else {
            return nil
        }

        guard VCArr.count > nextIndex else {
            return nil
        }

        return VCArr[nextIndex]
    }

    //pageviewcontroller after paging func
    func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {    
        guard let viewControllerIndex = VCArr.firstIndex(of: viewController) else {
            return nil
        }

        let nextIndex = viewControllerIndex + 1
        guard nextIndex < VCArr.count else {
            return nil
        }

        guard VCArr.count > nextIndex else {
            return nil
        }

        return VCArr[nextIndex]
    }

当我单击按钮时，我进入主视图。并且主视图包含viewpagercontroller，我需要在viewpagercontroller上删除页面。给我一些建议..谢谢

ViewPagerController视图删除。当我回到主视图时..？

0 个答案: