本文介绍了Objective-C - 获取UIViewController引用的处理方法,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

限时删除!!



我的应用程式版面配置如下:



TabBarController(hold a) - > UINavController for Tab 1(hold a) - > MyOwnListViewController - > UINavController(modally)(hold a) - > ItemAddViewController - > AddItemToItemViewController



也许这不是很清楚,所以为了清楚起见,当应用程序启动时,我在选项卡1和 MyOwnListViewController 是可见的,然后我推+按钮,我以模块的方式到 ItemAddViewController 。从那里我pushViewController AddItemToItemViewController 。现在在这个视图控制器,我想得到一个引用 ItemAddViewController



解决方案

您可以修改AddItemToItemViewController的init ***方法,并将它传递给您的ItemAddViewController。



EG:



在AddItemToItemViewController.h中:

  @property(nonatomic,retain)UIViewController * parentController; 

在AddItemToItemViewController.m中:

  @synthesize parentController; 

- (id)initWithParentController:(UIViewController *)controller {
self = [super init];

if(self){
self.parentController = controller;
}
return self;
}

- (void)dealloc {
[self.parentController release];
[super dealloc]
}

当在ItemAddViewController实例中调用控制器时:

  UIViewController * controller = [[AddItemToItemViewController alloc] initWithParentController:self]; 
[self.navigationController pushViewController:controller animated:YES];
[controller release];


I'm way in deep water here trying to get ahold of a vc.

My App layout looks like this:

TabBarController (holds a) -> UINavController for Tab 1 (holds a) -> MyOwnListViewController -> UINavController (modally) (holds a) -> ItemAddViewController -> AddItemToItemViewController

Maybe that wasn't very clear, so for clarity, when the app starts I'm on tab 1 and the MyOwnListViewController is visible, then I push a + button in the navigation bar and I'm taken modally to the ItemAddViewController. From there I pushViewController AddItemToItemViewController. Now in this view controller I want to get a reference to ItemAddViewController.

What would be the easiest way to get a reference to it?

解决方案

You could modify the init*** method of your AddItemToItemViewController and pass it the reference on your ItemAddViewController.

E.G :

In AddItemToItemViewController.h :

@property (nonatomic, retain) UIViewController *parentController;

In AddItemToItemViewController.m :

@synthesize parentController;

-(id) initWithParentController:(UIViewController *) controller{
    self = [super init];

    if(self){
        self.parentController = controller;
    }
    return self;
}

-(void) dealloc{
    [self.parentController release];
    [super dealloc];
}

When calling your controller inside your ItemAddViewController instance :

UIViewController *controller = [[AddItemToItemViewController alloc] initWithParentController:self];
[self.navigationController pushViewController:controller animated:YES];
[controller release];

这篇关于Objective-C - 获取UIViewController引用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!

1403页,肝出来的..

09-09 00:37