我有以下ViewController
class PageContentViewController: UIViewController {
var pageIndex: Int
}
如何从另一个ViewController访问pageIndex
?
我需要在这个函数中访问pageIndex
:
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?
}
发布于 2014-06-06 09:40:19
默认情况下,swift中的所有内容都是公开的,因此,如果您声明如下内容:
class SomeViewController: UIViewController {
var someVariable: SomeType = someValue
init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
}
}
只要你有一个实例,你就可以访问它:
var myCustomViewController: SomeViewController = SomeViewController(nibName: nil, bundle: nil)
var getThatValue = myCustomViewController.someVariable
发布于 2017-04-06 13:11:51
ViewController1.swift
class ViewController1: UIViewController {
struct GlobalVariable{
static var myString = String()
}
}
ViewController2.swift
class ViewController2: UIViewController
{
print(ViewController1.GlobalVariable.myString)
}
发布于 2017-04-24 18:07:26
我就是这样解决的。。
class StaticLinker
{
static var viewController : PageContentViewController? = nil
}
class PageContentViewController: UIViewController
{
var pageIndex: Int
StaticLinker.viewController = self
}
class AnotherClass
{
StaticLinker.viewController.pageIndex = 100
}
https://stackoverflow.com/questions/24072766
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