滚动视图中的iOS
问题描述:
我试图实现与网页控制滚动视图来显示使用斯威夫特,得到这样的输出在iOS的图像显示图像这里查看是另一个视图控制器的一部分。 我GOOGLE了,但没有得到所需的输出帮助。 任何人都可以帮我吗?滚动视图中的iOS
答
答案有点晚。因此,可能对别人有所帮助:
斯威夫特3X:
首先,给这样的代表团:
class YOUR_VIEW_CONTROLLER: UIViewController, UIScrollViewDelegate
现在连接的UIScrollView
和UIPageControl
像这样的店铺:
@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var pageControl: UIPageControl!
注:我用c olours阵列。您可以改为使用图像数组。
var colors:[UIColor] = [UIColor.red, UIColor.blue, UIColor.green, UIColor.yellow]
var frame: CGRect = CGRect(x:0, y:0, width:0, height:0)
现在只需复制并粘贴下面的代码在类:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
configurePageControl()
self.view.bringSubview(toFront: pageControl)
scrollView.delegate = self
self.view.addSubview(scrollView)
for index in 0..<4 {
frame.origin.x = self.scrollView.frame.size.width * CGFloat(index)
frame.size = self.scrollView.frame.size
let subView = UIView(frame: frame)
subView.backgroundColor = colors[index]
self.scrollView.addSubview(subView)
}
self.scrollView.isPagingEnabled = true
self.scrollView.contentSize = CGSize(width:self.scrollView.frame.size.width * 4,height: self.scrollView.frame.size.height)
pageControl.addTarget(self, action: #selector(self.changePage(sender:)), for: UIControlEvents.valueChanged)
}
func configurePageControl() {
// The total number of pages that are available is based on how many available colors we have.
self.pageControl.layer.zPosition = 1
self.pageControl.numberOfPages = colors.count
self.pageControl.currentPage = 0
self.pageControl.tintColor = UIColor.red
self.pageControl.pageIndicatorTintColor = UIColor.black
self.pageControl.currentPageIndicatorTintColor = UIColor.green
self.view.addSubview(pageControl)
}
// MARK : TO CHANGE WHILE CLICKING ON PAGE CONTROL
func changePage(sender: AnyObject) ->() {
let x = CGFloat(pageControl.currentPage) * scrollView.frame.size.width
scrollView.setContentOffset(CGPoint(x:x, y:0), animated: true)
}
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
let pageNumber = round(scrollView.contentOffset.x/scrollView.frame.size.width)
pageControl.currentPage = Int(pageNumber)
}
澄清你的问题吧。此外,请提供代码示例,其中介绍了如何尝试实现所请求的功能。 –