applicationWillResignActive

applicationWillResignActive

本文介绍了无法在applicationWillResignActive中获取当前ViewController的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个基于故事板的Single View应用程序;

I have a storyboard based Single View App;

我有3个 ViewControllers ViewController 代码中的类;

I have 3 ViewControllers on my Storyboard linked to 3 ViewController classes in the code;

我在 ViewControllers之间浏览通过这样做:

UIStoryboard*  sb = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone" bundle:[NSBundle mainBundle]];
MenuViewController* mainMenu = [sb instantiateViewControllerWithIdentifier:@"vcMainMenu"];

mainMenu.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:mainMenu animated:YES];

现在我需要访问不同的 UIcontrols 来自当前活动 ViewController 的 applicationWillResignActive ,我将根据 ViewController ,我试图这样做:

Now I need to access different UIcontrols on the applicationWillResignActive from the current active ViewController, I will access different controls depending of the ViewController, I'm trying to accomplish this by doing:

if ([self.window.rootViewController isKindOfClass:[LowProfileViewController class]])
{
    NSLog(@"here!");
}

但它总是返回 rootViewController 。如何获取当前显示 rootViewController 从 applicationWillResignActive ?

But it always returns the rootViewController. How Can I get the current displayed rootViewController from applicationWillResignActive?

请,并入 NavigationController 不是一个选项...

Please, Incorporate NavigationController is not an option...

感谢

推荐答案

您可以试试这个 -

You could try this -


  1. code> AppDelegate @property (即 currentModelViewController )

@property (nonatomic, retain) UIViewController *currentModelViewController;


  • 对于每个 ViewController viewDidAppear 或在 viewWillAppear

    appDelegate = [[UIApplication sharedApplication] delegate];
    appDelegate.currentModelViewController = self;
    


  • b
    $ b

    Now this will work

    if ([self.currentModelViewController isKindOfClass:[LowProfileViewController class]])
    {
        NSLog(@"here!");
    }
    

    这篇关于无法在applicationWillResignActive中获取当前ViewController的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

    09-19 00:38