iOS Swift页面视图控制器

Question

大家好，我有4个错误；

import UIKit

class ViewController: UIViewController, UIPageViewControllerDataSource{ // error1: Expected ',' separator

这是第一个带有错误消息的错误：预期的'，'分隔符

//For Navigation Bar Tint and BG Color
var NavBarBGColor = CommonUtilities.RGBColor("#2574A9")
var NavBarTintColor = UIColor.whiteColor()

var pageViewController: UIPageViewController!
var pageTitles: NSArray!
var pageImages: NSArray!

@IBOutlet weak var Open: UIBarButtonItem!
override func viewDidLoad() {
  //Navigation Bar Tint and BG Color
    self.navigationController?.navigationBar.tintColor = NavBarTintColor
    self.navigationController?.navigationBar.barTintColor = NavBarBGColor

    super.viewDidLoad()

    //Menu Button Click
    Open.target = self.revealViewController()
    Open.action = Selector("revealToggle:")

    //Pan Gesture Recognizer for page navigation
    self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())

        //Page View Controller for Men
        self.pageTitles = NSArray(objects: "Try","And")
        self.pageImages = NSArray(objects: "dummying - men","dummying - women")

    self.pageViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PageViewController") as! UIPageViewController

    self.pageViewController.dataSource = self //error2: Cannot assign a value of type 'ViewController' to a value of type 'UIPageViewControllerDataSource?'

这是带有错误消息的第二个错误：无法将类型“ ViewController”的值分配给类型“ UIPageViewControllerDataSource？”的值

    var startVC = self.viewControllerAtIndex(0) as ContentMenuViewController
    var viewControllers = NSArray(object: startVC)

    self.pageViewController.setViewControllers(viewControllers, direction: Forward animated: true, completion: nil) //error2: Use of unresolved identifier 'Forward'

这是错误消息的第二个错误：使用未解决的标识符“转发”

self.pageViewController.view.frame = CGRectMake(0, 30, self.view.frame.width, self.view.frame.size.height - 60)

    self.addChildViewController(self.pageViewController)
    self.view.addSubview(self.pageViewController.view)
    self.pageViewController.didMoveToParentViewController(self)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()


}

@IBAction func MenuRestartBtn(sender: AnyObject) {
}

func viewControllerAtIndex(index: Int) -> ContentMenuViewController
{
if ((self.pageTitles.count == 0)) || (index >= self.pageTitles.count)
{
    return ContentMenuViewController()
}

var vc: ContentMenuViewController = self.storyboard?.instantiateViewControllerWithIdentifier("") as! ContentMenuViewController


vc.imageFile = self.pageImages[index] as! String
vc.titleText = self.pageTitles[index] as! String
vc.pageIndex = index

return vc
}

 //Page View Controller Data Source
func pageViewController(pageViewController: UIPageViewController, viewControllerAfterViewController viewController: UIViewController) ->UIViewController?
{
    var vc = viewController as! ContentMenuViewController
    var index = vc.pageIndex as Int

    if (index == 0 || index == NSNotFound)
    {
        return nil
    }

    index--
    return self.viewControllerAtIndex(index)

}

func pageViewController(pageController: UIPageViewController, ViewControllerAfterViewController viewController: UIViewController) -> UIViewController?{

var vc = viewController as! ContentMenuViewController
var index = vc.pageIndex as Int

if (index == NSNotFound){
    return nil
}

index ++

    if (index == self.pageTitles.count)//error3: Expected expression after operator

这是错误消息的第二个错误：运算符{return nil}之后的期望表达式return self.viewControllerAtIndex（index）}

func presentationCountForPageViewController(pageViewController: UIPageViewController) -> Int {
    return self.pageTitles.count
}
func presentationIndexForPageViewController(pageViewController: UIPageViewController) -> Int {
    return 0
}

}

谢谢你们的帮助。

Answer 1

编辑：

好吧，第二个错误是由于第一个错误。 第一个错误根本没有意义，我建议您选择Product -> Clean 。

还有另外两个错误，请尝试用这种方式编写。 .Forward （转发必须在枚举内，我希望您的代码中有未发布的地方）。