如何在 iOS 中为 Swift 3/4 移除 UIPageViewController 弹跳效果

Posted 2023-03-13

【中文标题】如何在 iOS 中为 Swift 3/4 移除 UIPageViewController 弹跳效果

【英文标题】：How to remove UIPageViewController's Bounce effect in iOS for Swift 3/4

【发布时间】：2018-03-12 06:31:59

【问题描述】：

这是我的问题的截图：

【参考方案1】：

首先在你的 UIPageViewController 中找到滚动视图并添加 UIScrollViewDelegate

for view in self.pageViewController!.view.subviews 
        if let subView = view as? UIScrollView 
            subView.delegate = self
            subView.isScrollEnabled = true
            subView.bouncesZoom = false

        

（在您的 ViewController 类中扩展 UIScrollViewDelegate）

对于方法“scrollViewDidScroll”和“scrollViewWillEndDragging”上的 UIScrollViewDelegate，您可以添加类似这样的内容

func scrollViewDidScroll(_ scrollView: UIScrollView) 

    if(currentIndex == 0 && scrollView.contentOffset.x < scrollView.bounds.size.width)
        scrollView.contentOffset = CGPoint(x:scrollView.bounds.size.width, y:0.0)
    else if(currentIndex == 2 && scrollView.contentOffset.x > scrollView.bounds.size.width) 
        scrollView.contentOffset = CGPoint(x:scrollView.bounds.size.width, y:0.0)
    


func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) 
    if(currentIndex == 0 && scrollView.contentOffset.x < scrollView.bounds.size.width)
        scrollView.contentOffset = CGPoint(x:scrollView.bounds.size.width, y:0.0)
    else if(currentIndex == 2 && scrollView.contentOffset.x > scrollView.bounds.size.width) 
        scrollView.contentOffset = CGPoint(x:scrollView.bounds.size.width, y:0.0)
    

【参考方案2】：

我已经像下面的代码那样做了。

func scrollViewDidScroll(scrollView: UIScrollView) 
if currentIndex == 0 && scrollView.contentOffset.x < scrollView.bounds.size.width 
    scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
 else if currentIndex == totalViewControllers - 1 && scrollView.contentOffset.x > scrollView.bounds.size.width 
    scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
    

func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) 
    if currentIndex == 0 && scrollView.contentOffset.x < scrollView.bounds.size.width 
        scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
     else if currentIndex == totalViewControllers - 1 && scrollView.contentOffset.x > scrollView.bounds.size.width 
        scrollView.contentOffset = CGPoint(x: scrollView.bounds.size.width, y: 0)
    

【讨论】：

感谢您的回答！