UIViewController& UIview dealloc没有被调用 [英] UIViewController & UIview dealloc not getting called

问题描述

我有一个导航视图控制器，在视图控制器中，我隐藏了顶部的导航栏，并使用自定义UIView作为导航栏。

UIView栏有一个后退按钮，我使用Delegate方法（我已经声明了一个协议），当后台按钮被预先通知到视图控制器。

我在CustomNavigation中使用委托bar
id delegate;

在主控制器中，当我分配导航栏时，我设置代理

  topBar = [[TopNavigationBar alloc] initWithFrame：CGRectMake（0，0，480，40）]; 
 topBar.lblTitle.text = @Shop; 
 topBar.delegate = self; 
  

我在ViewControllers dealloc中发布了这个栏。

现在，当我按后退按钮时，我使用delegate方法在主ViewController中调用popViewController。

  // in自定义栏
  - （void）ButtonPressed {
 [delegate TopNavigationBarBackButtonPressed]; 
} 
 
 //在查看COntroller 
  - （void）TopNavigationBarBackButtonPressed {
 
 [self.navigationController popViewControllerAnimated：YES]; 
} 
  

现在ViewController被弹出，控件转到上一个viewController，但是dealloc在ViewController和UIView中都没有触发

我做错了什么？

解决方案

OK！终于明白了问题是什么。

是的，是代表。所以在我的后退按钮方法中，我需要将代理设置为NIL。

   - （void）TopNavigationBarBackButtonPressed {
 
 topBar.delegate = nil; 
 [self.navigationController popViewControllerAnimated：YES]; 
} 
  

而且，所有的dealloc被调用。你自定义协议我的生命的2天我永远不会回来。

编辑：
OK不需要将委托设置为nil。

我遇到了所有问题，因为在我保留代表的财产中。

 code> @property（nonatomic，retain）id< ASNavigationDelegate> delegate; 
  

这应该是

  @property（assign）id< ASNavigationDelegate>代表; 
  

I have a Navigation based view controller and in the view controller i have hidden the top navigation bar and use a custom UIView as the navigation bar.

The UIView bar has a back button and I use Delegate methods(I have declared a protocol) to communicate to the view controller when the back button is preesed.

I use delegate in my CustomNavigation Bar id delegate;

and In the main View Controller when i allocate the navigation bar i set the delegate

topBar = [[TopNavigationBar alloc] initWithFrame:CGRectMake(0, 0, 480, 40)];
topBar.lblTitle.text = @"Shop";
topBar.delegate = self;

I release this Bar in the ViewControllers dealloc.

Now when i press the back button I use delegate method to call a popViewController in the main ViewController.

//in Custom Bar
-(void)ButtonPressed {
    [delegate TopNavigationBarBackButtonPressed];   
}

//In View COntroller
-(void)TopNavigationBarBackButtonPressed {

    [self.navigationController popViewControllerAnimated:YES];
}

Now the ViewController is poped and the control goes to the previous viewController but the dealloc is not fired in both the ViewController and the UIView

What am i doing wrong?

解决方案

OK! Finally understood what the problem was.

Yes it was the delegate. So in my "back button pressed" method, I need to set the delegate to NIL.

-(void)TopNavigationBarBackButtonPressed {

 topBar.delegate = nil;
[self.navigationController popViewControllerAnimated:YES];
}

And voila, all the dealloc get called. Damn you custom Protocol. 2 Days of my life i will never get back.

EDIT: OK no need to set the delegate to nil.

I was having all the problems because in the property i was retaining the delegate.

@property(nonatomic, retain)id <ASNavigationDelegate>delegate;

This should be

@property(assign)id <ASNavigationDelegate> delegate;

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