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在我看来，我有一个按钮，它与此方法挂钩：

-(IBAction)showStore:(id)sender
{
    storeSinglePlayer *ssp = [[storeSinglePlayer alloc] init];
    ssp.imageH = self.imageURLH;
    ssp.imageV = self.imageURLV;
    CATransition* transition = [CATransition animation];
    transition.duration = 0.5;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = kCATransitionPush; 
    transition.subtype = kCATransitionFromTop;
    [self.navigationController.view.layer addAnimation:transition forKey:nil];
    [self.navigationController pushViewController:ssp animated:NO];
 }

当我单击此按钮时，它会显示“存储单人游戏”视图控制器。此外，“存储单人游戏”视图控制器有一个后退按钮，该按钮与以下方法挂钩：

-(IBAction)didPressBack:(id)sender
{
    CATransition* transition = [CATransition animation];
    transition.duration = 0.5;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = kCATransitionPush; 
    transition.subtype = kCATransitionFromBottom;
    [self.navigationController.view.layer addAnimation:transition forKey:nil];
    [self.navigationController popViewControllerAnimated:NO];

}

单击后退按钮也会让我回到以前的视图。

但现在这是一个奇怪的问题。如果我重复这 10 次，即单击按钮显示“storeSinglePlayer”，然后单击“storeSinglePlayer”上的后退按钮，我会收到错误消息：

[storeSinglePlayer respondsToSelector:]: message sent to deallocated instance 0xe5f6160

而且，这不仅在我的多次尝试中，而且只是随机崩溃。它会工作一段时间，有时不会。

我启用了 ARC。

仅仅这个简单的代码就无法理解有什么问题。阅读了很多关于堆栈溢出的问题，但没有一个能解决我的问题。

编辑：堆栈跟踪

2012-08-11 11:55:56.353 Magic Buzz[2088:707] (
    0   Magic Buzz                          0x000c7e19 -[gameOverScreen showStore:] + 700
    1   CoreFoundation                      0x3769c3fd -[NSObject performSelector:withObject:withObject:] + 52
    2   UIKit                               0x30891e07 -[UIApplication sendAction:to:from:forEvent:] + 62
    3   UIKit                               0x30891dc3 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 30
    4   UIKit                               0x30891da1 -[UIControl sendAction:to:forEvent:] + 44
    5   UIKit                               0x30891b11 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 492
    6   UIKit                               0x30892449 -[UIControl touchesEnded:withEvent:] + 476
    7   UIKit                               0x3089092b -[UIWindow _sendTouchesForEvent:] + 318
    8   UIKit                               0x30890319 -[UIWindow sendEvent:] + 380
    9   UIKit                               0x30876695 -[UIApplication sendEvent:] + 356
    10  UIKit                               0x30875f3b _UIApplicationHandleEvent + 5826
    11  GraphicsServices                    0x3789222b PurpleEventCallback + 882
    12  CoreFoundation                      0x37716523 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 38
    13  CoreFoundation                      0x377164c5 __CFRunLoopDoSource1 + 140
    14  CoreFoundation                      0x37715313 __CFRunLoopRun + 1370
    15  CoreFoundation                      0x376984a5 CFRunLoopRunSpecific + 300
    16  CoreFoundation                      0x3769836d CFRunLoopRunInMode + 104
    17  GraphicsServices                    0x37891439 GSEventRunModal + 136
    18  UIKit                               0x308a4cd5 UIApplicationMain + 1080
    19  Magic Buzz                          0x000b094d main + 96
    20  Magic Buzz                          0x000b08e8 start + 40
)
2012-08-11 11:55:56.554 Magic Buzz[2088:707] *** -[storeSinglePlayer respondsToSelector:]: message sent to deallocated instance 0xf6cde30
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1 回答 1

2

一些异步方法在释放后调用 storeSinglePlayer 对象，尝试在 ViewDidUnload/ViewWillDisappear 中将所有委托删除为 nil。如果您将一些查询发送到服务器并且没有等待它您按下后退按钮那么它也会崩溃，因为在完成请求后它将调用 storeSinglePlayer 对象。希望这可以帮助

于 2012-08-11T06:25:14.910 回答