在Swift中从另一个ViewController访问变量

我有以下内容ViewController

class PageContentViewController: UIViewController {

var pageIndex: Int

}

我如何pageIndex从另一个ViewController 访问?

我需要访问pageIndex此功能:

func pageViewController(pageViewController: UIPageViewController!, viewControllerBeforeViewController viewController: UIViewController!) -> UIViewController! {

//var index: Int

//index = ?

NSUInteger index = ((PageContentViewController*) viewController).pageIndex; // in Swift?

if ((index == 0) || (index == NSNotFound)) {

return nil;

}

index--;

return [self viewControllerAtIndex:index]; // in Swift?

}

回答:

默认情况下,swift中的所有内容都是公开的,因此,如果您声明以下内容:

class SomeViewController: UIViewController {

var someVariable: SomeType = someValue

init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {

super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)

}

}

只要拥有它的实例,就可以访问它:

var myCustomViewController: SomeViewController = SomeViewController(nibName: nil, bundle: nil)

var getThatValue = myCustomViewController.someVariable

以上是 在Swift中从另一个ViewController访问变量 的全部内容, 来源链接: utcz.com/qa/417790.html

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