UIPageViewController何时没有名为setViewControllers的成员?

时间:2015-01-19 03:08:19

标签: ios xcode swift uipageviewcontroller

我正在尝试覆盖accessibilityScroll,以便VoiceOver可以正常使用UIPageViewController(pageViewController工作正常,但启用VoiceOver并执行三指滑动不会做任何事情,因为我没有覆盖{{ 1}},据我所知)。

我可以检测到右侧或左侧accessibilityScroll,但每次我尝试调用UIAccessibilityScrollDirection时,Xcode都会发现错误,因为它无法将其作为UIPageViewController的成员找到。

这就是我所拥有的:

setViewControllers

到目前为止,这是按预期工作的,因为正确的页面索引正在打印到控制台。

我希望

override func accessibilityScroll(direction: UIAccessibilityScrollDirection) -> Bool {
    if (pageViewController != nil) {
        let tutorialViewController = pageViewController!.viewControllers[0] as TutorialViewController // Get the current viewController being shown by the pageViewController.

        if (direction == UIAccessibilityScrollDirection.Right && tutorialViewController.pageIndex > 0) {
            // Go to previous page.
            var itemController = pageViewController(pageViewController!, viewControllerBeforeViewController: pageViewController!.viewControllers[0] as UIViewController) // Get the previous page.
            let tVC = itemController as TutorialViewController
            println("Previous page index is \(tVC.pageIndex)")
        }
        else if (direction == UIAccessibilityScrollDirection.Left && tutorialViewController.pageIndex < tutorialImage.count) {
            // Go to next page.
            var itemController = pageViewController(pageViewController!, viewControllerAfterViewController: pageViewController!.viewControllers[0] as UIViewController) // Get the next page.
            let tVC = itemController as TutorialViewController
            println("Next page index is \(tVC.pageIndex)")
        }
    }
    UIAccessibilityPostNotification(UIAccessibilityPageScrolledNotification, nil)

    return true
}

必须在每个pageViewController!.setViewControllers(pageViewController!.viewControllers[tVC.pageIndex], direction: UIPageViewControllerNavigationDirection.Forward/Reverse, animated: true, completion: nil) / if语句中添加适当的UIPageViewControllerNavigationDirection,但是当Xcode显示无法找到成员'setViewControllers'错误时

当然,it is a member

我一整天都在捣乱,我确信我错过了一些非常明显的东西。有任何想法,提示或建议吗?

0 个答案:

没有答案