Question

我有一个UIPageViewController，让我在多个视图控制器之间导航。我的应用程序可以在屏幕上滑动，但是我想删除滑动手势以在页面之间浏览视图内不同按钮这是我在页面视图cxontroller上使用的代码

class RootPageViewController: UIPageViewController,UIPageViewControllerDataSource {

lazy var viewControllerList: [UIViewController] = {
    let storyBoard = UIStoryboard(name: "Main", bundle: nil)

    let VC1 = storyBoard.instantiateViewController(withIdentifier: "orangeVC")
    let VC2 = storyBoard.instantiateViewController(withIdentifier: "blueVC")
    let VC3 = storyBoard.instantiateViewController(withIdentifier: "purpleVC")

    return [VC1, VC2, VC3]
}()

override func viewDidLoad() {
    super.viewDidLoad()

    self.dataSource = self

    if let firstViewController = viewControllerList.first {
        self.setViewControllers([firstViewController], direction: .forward, animated: true, completion: nil)            
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
    guard let vcIndex = viewControllerList.index(of: viewController) else {return nil}
    let previousIndex = vcIndex-1
    guard previousIndex >= 0 else {return nil}
    guard viewControllerList.count > previousIndex else {return nil}

    return viewControllerList[previousIndex]
}

func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
    guard let vcIndex = viewControllerList.index(of: viewController) else {return nil}
    let nextIndex = vcIndex+1
    guard viewControllerList.count != nextIndex else {return nil}
    guard viewControllerList.count > nextIndex else {return nil}

    return viewControllerList[nextIndex]
}

}

Answer 1

您只需要在按钮操作内添加此行

self.setViewControllers([viewControllerList[indexHere]], direction: .forward, animated:false, completion: nil)

使用我的View Controllers Swift 4中的按钮使用UIPageViewController更改页面

1 个答案: