Swift 2语法错误，方向为.Forward [英] Swift 2 syntax error with direction .Forward

问题描述

我在Swift 1.2中写了下一篇:

I wrote in Swift 1.2 the next:

self.pageViewController.setViewControllers(viewControllers as [AnyObject], direction: .Forward, animated: true, completion: nil)

但是现在，在Swift 2中，它会向我显示下一个错误:

but now, in Swift 2 it prints me the next error:

Could not find member 'Forward'

我该如何解决?

推荐答案

您应确保viewControllers不是可选的Type.如:

You should make sure that your viewControllers not optional Type. Such as:

var viewControllers:[UIViewController] = [VC1,VC2]
self.pageViewController.setViewControllers(viewControllers, direction: UIPageViewControllerNavigationDirection.Forward, animated: true, completion: nil)

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