A、 每次手指滑动后,显示一屏的内容。
B、设置pagingEnable属性 为 true。
colorViewController.swfit文件 源码:
/* 实现切换的画面 */ import UIKit class ColorViewController:UIViewController { var number:Int!; let colorMap = [ 1:UIColor.greenColor(), 2:UIColor.blueColor(), 3:UIColor.purpleColor() ]; /// 初始化函数 init(initNumber:Int) { self.number = initNumber; super.init(nibName: nil, bundle: nil); } required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented"); } override func viewDidLoad() { ///super.viewDidLoad(); /// 实例化label对象 let numberLabel = UILabel(frame: CGRectMake(0, 0, 30, 20)); numberLabel.center = self.view.center; /// 设置显示内容 numberLabel.text = "第\(number)页"; ///文字自动调整显示宽度 numberLabel.adjustsFontSizeToFitWidth = true; /// 设置背景色 numberLabel.backgroundColor = UIColor.whiteColor(); self.view.addSubview(numberLabel); self.view.backgroundColor = colorMap[number]; } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } }上面的代码,实现了切换画面的效果。
viewController.swift文件源码:
// import UIKit class ViewController: UIViewController { let numberOfPages = 3; let pageWidth = 320; let pageHeight = 360; override func viewDidLoad() { super.viewDidLoad(); /// scrollView的初始化 let scrollView = UIScrollView(); scrollView.frame = self.view.frame; /// 为了能横向滚动,设置横向内容为3个页面的宽度之和 scrollView.contentSize = CGSizeMake(CGFloat(pageWidth*numberOfPages), CGFloat(pageHeight)); scrollView.pagingEnabled = true; /// 禁用滚动条 scrollView.showsHorizontalScrollIndicator = false; scrollView.showsVerticalScrollIndicator = false; /// scrollView.scrollsToTop = false; for i in 0..<numberOfPages { let coloViewController = ColorViewController(initNumber:(i+1)); /// 设置每一页内容的位置,注意,X轴每次要增加一个页面的宽度 coloViewController.view.frame = CGRectMake(CGFloat(i * pageWidth), CGFloat(30), CGFloat(pageWidth), CGFloat(pageHeight)); scrollView.addSubview(coloViewController.view); } view.addSubview(scrollView); } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }viewcontroller.swift文件实例化 UIScrollView对象,再通过设置 pagingEnable属性 和 contentSize属性,使得 scrollView能页单位显示和滚动。