2012-02-11 40 views
2

我遇到了與可加載捆綁包和KVO有關的問題。似乎任何有KVO觀察者附加到它的實例的類都不能通過NSBundle的-unload方法安全地卸載。KVO/KVC在重新加載之前卸載的捆綁包時崩潰

我做了以下內容:

for (int i = 0; i < 100; i++) 
{ 
    [bundle load]; 

    Class bundleClass = [bundle principalClass]; 

    [[[bundleClass alloc] init] release]; 

    [bundle unload]; 
} 

而在捆綁的原理類-init方法,

[self addObserver: self 
      forKeyPath: @"name" 
       options: 0 
       context: nil]; 

    self.name = @"jim"; 

環路獲得通過迭代的次數,有時繞第二圈時崩潰有時候在三十號。

使用EXC_BAD_ACCESS信號時,它總是與此回溯相碰撞。

#0 0x00007fff8a30deab in objc_msgSend() 
#1 0x00007fff8609d862 in NSKeyValueNotifyObserver() 
#2 0x00007fff860be99b in NSKeyValueDidChange() 
#3 0x00007fff8606b0fb in -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:]() 
#4 0x00000001007a4c2c in -[Bundle init] (self=0x101902130, _cmd=0x7fff8ea369b0) at /Users/joerick/Desktop/bundleTest/testbundle/Bundle.m:26 
#5 0x0000000100001731 in -[SIAppDelegate applicationDidFinishLaunching:] (self=0x100326a90, _cmd=0x7fff876e285f, aNotification=0x100131ea0) at /Users/joerick/Desktop/bundleTest/bundleTest/SIAppDelegate.m:28 
#6 0x00007fff8606ade2 in __-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_1() 
#7 0x00007fff8b470e0a in _CFXNotificationPost() 
#8 0x00007fff86057097 in -[NSNotificationCenter postNotificationName:object:userInfo:]() 
#9 0x00007fff8e1bbaa7 in -[NSApplication _postDidFinishNotification]() 
#10 0x00007fff8e1bb80d in -[NSApplication _sendFinishLaunchingNotification]() 
.... 

Full code here

您可以下載顯示這個問題here一個樣本項目。

我在想這是可可中的一個錯誤,但我想知道是否有人能看到我是否在這裏做什麼愚蠢的事情?

回答