Ios 水平滚动视图不滚动
我在互联网上学习了一个教程,解释了如何使用分页创建滚动视图 当我只想显示一个图像时,它可以工作。但我需要3个标签和一张图片。我把所有的东西都放在故事板上了。但在设备/模拟器上运行时,我无法滚动Ios 水平滚动视图不滚动,ios,image,swift,uiscrollview,Ios,Image,Swift,Uiscrollview,我在互联网上学习了一个教程,解释了如何使用分页创建滚动视图 当我只想显示一个图像时,它可以工作。但我需要3个标签和一张图片。我把所有的东西都放在故事板上了。但在设备/模拟器上运行时,我无法滚动 //Scrollview @IBOutlet weak var scrollView: UIScrollView! @IBOutlet weak var pageControl: UIPageControl! var pageImages: [UIImage] = [] var pageViews: [U
//Scrollview
@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var pageControl: UIPageControl!
var pageImages: [UIImage] = []
var pageViews: [UIImageView?] = []
@IBOutlet weak var blogImage: UIImageView!
@IBOutlet weak var blogTussenTitel: UILabel!
@IBOutlet weak var blogTitel: UILabel!
@IBOutlet weak var blogbeschrijving: UILabel!
var items: [String] = ["We", "Heart", "Swift"]
override func viewDidLoad() {
super.viewDidLoad()
self.sideMenuController()?.sideMenu?.delegate = self;
if isMenuOpen() == true { disableObjects() } else { enableObjects() }
// SrollView
// 1
pageImages = [UIImage(named: "photo1.png")!,
UIImage(named: "photo2.png")!,
UIImage(named: "photo3.png")!,
UIImage(named: "photo4.png")!,
UIImage(named: "photo5.png")!]
let pageCount = pageImages.count
// 2
pageControl.currentPage = 0
pageControl.numberOfPages = pageCount
// 3
for _ in 0..<pageCount {
pageViews.append(nil)
}
// 4
let pagesScrollViewSize = scrollView.frame.size
scrollView.contentSize = CGSize(width: pagesScrollViewSize.width * CGFloat(pageImages.count),
height: pagesScrollViewSize.height)
// 5
loadVisiblePages()
}
func loadVisiblePages() {
// First, determine which page is currently visible
let pageWidth = scrollView.frame.size.width
let page = Int(floor((scrollView.contentOffset.x * 2.0 + pageWidth) / (pageWidth * 2.0)))
// Update the page control
pageControl.currentPage = page
// Work out which pages you want to load
let firstPage = page - 1
let lastPage = page + 1
// Purge anything before the first page
for var index = 0; index < firstPage; ++index {
purgePage(index)
}
// Load pages in our range
for index in firstPage...lastPage {
loadPage(index)
}
// Purge anything after the last page
for var index = lastPage+1; index < pageImages.count; ++index {
purgePage(index)
}
}
func loadPage(page: Int) {
if page < 0 || page >= pageImages.count {
// If it's outside the range of what you have to display, then do nothing
return
}
// 1
if let pageView = pageViews[page] {
// Do nothing. The view is already loaded.
} else {
// 2
var frame = scrollView.bounds
frame.origin.x = frame.size.width * CGFloat(page)
frame.origin.y = 0.0
// 3
let newPageView = UIImageView(image: pageImages[page])
newPageView.contentMode = .ScaleAspectFit
newPageView.frame = frame
scrollView.addSubview(newPageView)
//Image inladen
//self.blogImage.image = pageImages[page]
// 4
pageViews[page] = newPageView
}
}
func purgePage(page: Int) {
if page < 0 || page >= pageImages.count {
// If it's outside the range of what you have to display, then do nothing
return
}
// Remove a page from the scroll view and reset the container array
if let pageView = pageViews[page] {
pageView.removeFromSuperview()
pageViews[page] = nil
}
}
func scrollViewDidScroll(scrollView: UIScrollView) {
loadVisiblePages()
}
//滚动视图
@iBCROLLVIEW:UIScrollView!
@IBVAR弱页面控制:UIPageControl!
var pageImages:[UIImage]=[]
var页面浏览量:[UIImageView?]=[]
@iBlogImage:UIImageView!
@IBOutlet弱var blogTussenTitel:UILabel!
@IBL:UILabel!
@iblabel:UILabel!
变量项:[字符串]=[“我们”、“心”、“迅捷”]
重写func viewDidLoad(){
super.viewDidLoad()
self.sideMenuController()?.sideMenu?.delegate=self;
如果isMenuOpen()==true{disableObjects()}否则{enableObjects()}
//斯罗尔维尤
// 1
pageImages=[UIImage(名为:“photo1.png”)!,
UIImage(名为:“photo2.png”)!,
UIImage(名为:“photo3.png”)!,
UIImage(名为:“photo4.png”)!,
UIImage(名为:“photo5.png”)!]
让pageCount=pageImages.count
// 2
pageControl.currentPage=0
pageControl.numberOfPages=pageCount
// 3
对于0中的u0..=pageImages.count{
//如果超出了必须显示的范围,则什么也不做
返回
}
// 1
如果let pageView=pageViews[page]{
//不执行任何操作。视图已加载。
}否则{
// 2
var frame=scrollView.bounds
frame.origin.x=frame.size.width*CGFloat(第页)
frame.origin.y=0.0
// 3
让newPageView=UIImageView(图像:pageImages[页面])
newPageView.contentMode=.ScaleSpectFit
newPageView.frame=frame
scrollView.addSubview(newPageView)
//图像镶嵌
//self.blogImage.image=页面图像[页面]
// 4
页面浏览量[页面]=新建页面浏览量
}
}
func purgePage(页码:Int){
如果页面<0 | |页面>=pageImages.count{
//如果超出了必须显示的范围,则什么也不做
返回
}
//从滚动视图中删除页面并重置容器阵列
如果let pageView=pageViews[page]{
pageView.removeFromSuperview()
页面浏览量[页面]=零
}
}
func scrollViewDidScroll(scrollView:UIScrollView){
loadVisiblePages()
}
谁能解决这个问题?
提前谢谢!
亲切问候,Hannes请确保您的
UIScrollView高度
不超过视图高度
本身
UIScrollView设置
视图设置
ViewController.swift
import UIKit
class ViewController: UIViewController, UIScrollViewDelegate {
@IBOutlet weak var scroller: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
scroller.contentSize = CGSizeMake(400, 2300)
scroller.showsHorizontalScrollIndicator = true
scroller.scrollEnabled = true
}
}