在我的 ViewController 中,我有一个 UIScrollView,其中包含两个 viewController(AviewController 和 BviewController)。 滚动工作正常,但是,我想添加一个无限循环,这意味着当滚动到达最后一个 View ( BviewController )时,AviewController 应该是下一个,反之亦然。
找不到实现此目的的方法。有什么想法吗?
到目前为止我已经在 viewDidLoad 中:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let AviewController = storyboard.instantiateViewControllerWithIdentifier("A_id") as! AviewController;
let BviewController = storyboard.instantiateViewControllerWithIdentifier("B_id") as! BviewController;
scrollView!.contentSize = CGSizeMake(2*CGRectGetWidth(AviewController.view.frame), CGRectGetHeight(view.frame));
let viewControllers = [AviewController, BviewController]
var idx:Int = 0;
for viewController in viewControllers {
// index is the index within the array
// participant is the real object contained in the array
addChildViewController(viewController);
let originX:CGFloat = CGFloat(idx) * CGRectGetWidth(scrollView!.frame);
viewController.view.frame = CGRectMake(originX, 0, viewController.view.frame.size.width, viewController.view.frame.size.height);
scrollView!.addSubview(viewController.view)
viewController.didMoveToParentViewController(self)
idx++;
}
最佳答案
覆盖 UIScrollView 的一种方法,将内容大小填充到比您的内容大得多,然后覆盖 layoutSubviews 以在滚动时重新定位 View 。
Apple 提供的示例如下:https://developer.apple.com/library/ios/samplecode/StreetScroller/Introduction/Intro.html
特别查看 InfiniteScrollView 文件 https://developer.apple.com/library/ios/samplecode/StreetScroller/Listings/StreetScroller_InfiniteScrollView_m.html
以及layoutSubviews和recenterIfNecessary方法。
关于ios - Swift - viewController 之间无限滚动,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31626860/