从iOS中的Presented View Controller推送视图 [英] Push View from Presented View Controller in iOS

问题描述

简而言之: 如何从Presented ViewController中使用PushViewController?

In Short : How can I PushViewController from Presented ViewController ?

简介:

我有MainViewController，其中单击一个按钮，其中有一个名为LoginViewController的视图.

I have MainViewController, In which I have one button on click of button, I am presenting a view called LoginViewController.

在此页面(LoginViewController)上，我再次显示button，单击此按钮后，我尝试将其不推动的视图控制器(称为HomeViewController)推入.

On this page (LoginViewController), I again have button, on click of that, I try to push my view controller(called HomeViewController) it doesn't pushes.

这是我的代码段，

MainViewController.m

- (IBAction)LoginClicked:(id)sender {
    LoginViewController *vc = [[LoginViewController alloc] init];
    [self presentViewController:vc animated:YES completion:nil];
}

LoginViewController.m

- (IBAction)buttonActionMethodOnLoginView:(id)sender{
     NSLog(@"viewControllers %@",APPDELEGATE.nav.viewControllers);
     //LoginViewController is not in this array
     HomeViewController *obj = [[HomeViewController alloc] init];
     [self.navigationController pushViewController:obj animated:YES];
}

但这对我不起作用.另外，我在pushed之前打印了a stack of view controllers，但是它没有LoginViewController.因此，在不将LoginViewController添加到a stack of view controllers的情况下，如何将pushed从LoginViewController转换为HomeViewController?

But it did not works for me. Also, I printed a stack of view controllers before pushed, but it doesn't have LoginViewController. So, without adding LoginViewController into a stack of view controllers, How can I pushed to HomeViewController from LoginViewController ?

当我从HomeViewController处回来时，应该打开LoginViewController.

When I getBack from HomeViewController, then LoginViewController should get opened..

是否可以使用此单个NavigationController?

注意:-在这里，我以使用Login，Home和Main ViewController为例.但我希望将其导入其他屏幕.

Note:- Here, I have just taken an example using Login, Home and Main ViewController. But I want that into Other Screens.

推荐答案

您必须从firstView(MainViewController)中开始Push，但是您可以使用与PresentView和DismissView相同的动画.为此使用以下代码:-

You have to Push from your firstView (MainViewController), but you can use animation same as PresentView and DismissView. Use following code for this :-

用于推送(在MainViewController上)

LoginViewController *VC = [[LoginViewController alloc]init];
CATransition* transition = [CATransition animation];
transition.duration = 0.3f;
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromTop;
[self.navigationController.view.layer addAnimation:transition
                                            forKey:kCATransition];
[[[UINavigationController alloc] initWithRootViewController:VC] pushViewController:VC animated:NO];
//[self.navigationController pushViewController:VC animated:NO];

用于流行音乐(在LoginViewController上)

CATransition* transition = [CATransition animation];
transition.duration = 0.3f;
transition.type = kCATransitionReveal;
transition.subtype = kCATransitionFromBottom;
[self.navigationController.view.layer addAnimation:transition
                                            forKey:kCATransition];
[self.navigationController popViewControllerAnimated:NO];

使用此代码，您可以获得与Present-Dismiss ViewControllers相同的动画.有关更多详细信息，请参考此答案.

Using this code, you can get animation same as Present-Dismiss ViewControllers. Refer this answer for more details.

然后，您可以将代码用于Pushing LoginViewController至HomeViewController

And after that, you can use your code for Pushing LoginViewController to HomeViewController

希望，这就是您想要的.如有任何疑问，请联系我. :)

Hope, this is what you're looking for. Any concern get back to me. :)

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