For 循环中的僵尸消息

发布于 2024-09-24 12:06:35 字数 582 浏览 0 评论 0原文

我有一个 ivar，keys，它是一个包含 50 个字符串的 NSMutableArray。当我的视图加载时，我在 Instruments 中收到僵尸消息错误，它引导我到这行代码：

for (int row = 0; row < r; row++) {
    for (int column = 0; column < c; column++){
        otherArray[column][row] = [[[keys objectAtIndex:0] retain] autorelease]; 
                                //^ Instruments brings me here
        [keys removeObjectAtIndex:0];
    }
}

我保留了该值以使其保持活动状态，以便 remove 不会导致崩溃，但仍然如此。我尝试过不保留和自动释放，但它仍然崩溃。当我有一个局部变量但没有 ivar 时，这种保留和自动释放的方法有效...

我需要一个 ivar，因为我需要在其他地方访问字符串。

谢谢

原文

I have an ivar, keys which is an NSMutableArray containing 50 strings. When my view loads, i am getting a zombie messaged error in Instruments, and it is directing me to this line of code:

for (int row = 0; row < r; row++) {
    for (int column = 0; column < c; column++){
        otherArray[column][row] = [[[keys objectAtIndex:0] retain] autorelease]; 
                                //^ Instruments brings me here
        [keys removeObjectAtIndex:0];
    }
}

I have retained the value to keep it alive so that the remove will not cause a crash, but it still does. I have tried not retaining, and autoreleasing and it still crashes. This method of retaining and autoreleasing works when i have a local variable, but not an ivar...

I need an ivar because i need to access the strings elsewhere.

Thanks

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