xcode 禁用 UIPageViewController 滑动 - Swift
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Disable UIPageViewController Swipe - Swift
提问by Voyager
In my project i use UIPageViewController to swipe between 5 child UIViewController. In some of child view controller, i need to disable the swipe gesture of the UIPageViewController so when user swipe it not change to other view. So how i can disable the swipe from the child view controller?
在我的项目中，我使用 UIPageViewController 在 5 个子 UIViewController 之间滑动。在某些子视图控制器中，我需要禁用 UIPageViewController 的滑动手势，以便用户滑动时不会更改为其他视图。那么如何禁用子视图控制器的滑动呢？
Appreciate for help..thanks
感谢您的帮助..谢谢
回答by Rurouni
In your page view controller, add following
在您的页面视图控制器中，添加以下内容
override func viewDidLoad(){
super.viewDidLoad()
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(yourpageviewcontroller.enableSwipe(_:)), name:"enableSwipe", object: nil)
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(yourpageviewcontroller.disableSwipe(_:)), name:"disableSwipe", object: nil)
}
func disableSwipe(notification: NSNotification){
self.dataSource = nil
}
func enableSwipe(notification: NSNotification){
self.dataSource = self
}
In your child view controller, you can just post notification by following.
在您的子视图控制器中，您可以通过以下方式发布通知。
NSNotificationCenter.defaultCenter().postNotificationName("enableSwipe", object: nil)
OR
或者
NSNotificationCenter.defaultCenter().postNotificationName("disableSwipe", object: nil)
回答by Mohsen Sedaghat Fard
You can use this extension:
你可以使用这个扩展：
extension UIPageViewController {
var isPagingEnabled: Bool {
get {
var isEnabled: Bool = true
for view in view.subviews {
if let subView = view as? UIScrollView {
isEnabled = subView.isScrollEnabled
}
}
return isEnabled
}
set {
for view in view.subviews {
if let subView = view as? UIScrollView {
subView.isScrollEnabled = newValue
}
}
}
}
}
and call this:
并称之为：
pageCtrl.isPagingEnabled = false
