先在story.board 新增一個 pageviewcontrller 和 一個view-controller
然後拉一個 image view 進去.. 新增一個 變數
class ContentViewController: UIViewController {
var nowPageNumber = 0
@IBOutlet weak var myImageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
myImageView.image = UIImage(named: "\(nowPageNumber)")
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
在這個新增的viewcontroller 設定他的 storyboardID -> mainContentViewController
class ViewController: UIViewController {
var pageViewController:UIPageViewController?
override func viewDidLoad() {
super.viewDidLoad()
let storyboard = UIStoryboard(name: "Main", bundle: nil)
pageViewController = storyboard.instantiateViewController(withIdentifier: "pageViewController") as? UIPageViewController
pageViewController?.view.frame = self.view.frame
// addChildViewController() 裡面的參數不能是 optional的物件, 所以要加!
addChildViewController(pageViewController!)
// 把 pageviewcontroller 加到目前的viewcontroller. 當作一個子類別的viewcontroller
//addSubview() 裡面的參數不能是 optional的物件, 所以要加!
view.addSubview(pageViewController!.view)
// 把 pageViewController.view 加到目前的畫面上
pageViewController?.didMove(toParentViewController: self)
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func viewControllerAtIndex(index:Int) -> ContentViewController?{
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let contentviewController = storyboard.instantiateViewController(withIdentifier: "mainContentViewController") as? ContentViewController
contentviewController?.nowPageNumber = index
return contentviewController
}
}
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加入翻頁的程式碼
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
let vc = viewController as? ContentViewController
guard var index = vc?.nowPageNumber else{return nil}
if index == 0 || index == NSNotFound {
return nil
}else{
index -= 1
return viewControllerAtIndex(index : index)
}
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
let vc = viewController as? ContentViewController
guard var index = vc?.nowPageNumber else{return nil}
if index == NSNotFound {
return nil
}else{
index += 1
if index >= 3{
return nil
}else{
return viewControllerAtIndex(index : index)
}
}
}
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