如何知道哪个的viewController当子视图除去

 
- (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag 
{ 
    [[self model] setTransitioning:NO]; 
    [[[[self view]subviews] objectAtIndex:0] removeFromSuperview]; 
} 
 

How can I tell what kind of viewController controls the subview at index 0? 
If it's a QuizViewController I need to call a function on it. 

Thanks in advance. 

Good answers. I don't believe I explained enough. This is a all in a view controller that is a view stack. The view controller adds and deletes views manually with an animated transition. I am not using a navigationController and cannot in this particular instance for other reasons.
 
Sometimes the views I add are simple UIImageViews. Sometimes they are QuizViews. The QuizViews have a QuizViewController because they need internal functionality. Here are the two functions I use to add the views. 

- (void)loadQuiz:(NSInteger)quizNum 
 

{
如果（[自quizViewController] =零！）
{
[自setQuizViewController：无]; 
} 
QuizViewController * quiz = [[QuizViewController alloc] initWithNibName：@“QuizViewController”bundle：nil]; 
[测验setUp：quizNum]; 
[self setQuizViewController：quiz]; 
[quiz release]; 

[[self view] addSubview:[[self quizViewController]view]]; 
[self setSlide1:[[[self view] subviews] objectAtIndex:0]]; 
[self setSlide2:[[[self view] subviews] objectAtIndex:1]]; 
[[self slide1] setHidden:NO]; 
[[self slide2] setHidden:YES]; 

[self performTransition]; 
 

} 

- (void)loadImage:(NSString *)slideImage 
 

{ 

UIImage *tempImg = [UIImage imageWithContentsOfFile:[Utilities localPathForFileName:slideImage]]; 
UIImageView *temp = [[UIImageView alloc] initWithImage:tempImg]; 
[[self view] addSubview:temp]; 
[temp release]; 

//[topView release]; 

if ([[[self view]subviews] count] > 2) { 
     //add the 2nd subview 
     //[[[[self view]subviews] objectAtIndex:0] removeFromSuperview]; 
} 

[self setSlide1:[[[self view] subviews] objectAtIndex:0]]; 
[self setSlide2:[[[self view] subviews] objectAtIndex:1]]; 
[[self slide1] setHidden:NO]; 
[[self slide2] setHidden:YES]; 

NSLog(@"%s %d",__FUNCTION__,[[[self view]subviews] count]); 
[self performTransition];

}

所以我的问题仍然是，在animationDidStop功能，我怎样检测，如果它是一个测试吗？

来源

2010-12-09 intomo

如果（[自我视图]子视图] objectAtIndex：0] isKindOfClass：CLASS（类）） ...

或isMemberofClass

从内存中，因此你必须对它进行测试。 ..

您也可以在创建视图时在视图上设置标记，然后在检索视图时查找视图。

someUIView.tag = 99;

然后

如果（[自我视图]子视图] objectAtIndex：0] == .TAG 99）

...

干杯

来源

2010-12-09 06:02:03 Jordan

很好的答案。我不相信我足够的解释。 – intomo 2010-12-11 06:58:57

谢谢。这工作。 – intomo 2010-12-11 21:28:11

你保持一个UIViewController中（例如对于*的UIViewController currentViewController）对象，用于保持当前视图控制器的轨迹。
现在，在按照我的理解被多个视图控制器推入的视图控制器之前，您需要使用您正在推送的viewController来设置currentViewController。
所以，如果你在QuizViewController中，并推动viewController哪些控制子视图，你首先设置它的currentController，然后推它。
subViewController.currentController = self;
[self.navigationController pushViewController：subViewController animated：YES];

来源

2010-12-09 06:03:08

视图本身并没有视图控制器附加到它们，所以你的问题措辞的方式不太合理。如果你正在做的是将一个UIView子类（比如说QuizView）作为一个子视图，并且需要知道何时该子类被删除并对其执行操作，那么代码将如下所示;

-(void) animationDidStop:(CAAnimation*)theAnimation finished:(BOOL)flag 
{ 
    [[self model] setTransitioning:NO]; 
    UIView *subview = [self.view.subviews objectAtIndex:0]; 
    if([subview isKindOfClass:[QuizView class]]) 
    { 
     [(QuizView*)subview yourFunction]; 
    }  

    [subview removeFromSuperview]; 
}

如果你的意思是不同的，你可以提供一些代码，我也许能帮助更多的，但就像我说你原来的问题不是很清楚，我这是不是你的意思;）

来源

2010-12-09 06:31:22 MahatmaManic

如何知道哪个的viewController当子视图除去

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