斯威夫特德code数组定义类内存泄漏 [英] Swift Decode Array Custom Class Memory Leak

问题描述

我节省使用NSCoding我的应用程序的配置和使用德codeWithKey当仪器时，出现了泄漏。

I'm saving my app config using NSCoding and am getting a leak in Instruments when using DecodeWithKey.

设置有一个属性stsSettings

Settings has a property stsSettings

stsSettings = (aDecoder.decodeObjectForKey("stsSettings") as! StsSettings)

stsSettings有StsVariables的属性数组

stsSettings has a property array of StsVariables

stsVariables = (aDecoder.decodeObjectForKey("stsVariables") as! [StsVariable])

泄露的对象＃地址大小负责任图书馆负责相框
StsVariable 1 0x7fe182d494f0 192字节基金会_de codeObjectBinary

Leaked Object # Address Size Responsible Library Responsible Frame StsVariable 1 0x7fe182d494f0 192 Bytes Foundation _decodeObjectBinary

设置也有一个属性的转化是转换对象的数组，这不漏，所以我不知道是什么回事。

Settings also has a property conversions which is an array of Conversion objects and this doesn't leak, so I can't work out what's going on.

推荐答案

我经历过类似的情况出现内存泄漏。我被分配去codeD数组一个局部变量解决该问题和元素复制到该属性。但是，我不知道为什么内存泄漏在那里摆在首位。

I experienced a memory leak in a similar situation. I resolved the issue by assigning the decoded array to a local variable and copy the elements to the property. However, I don't know why the memory leak was there in the first place.

let variables = (aDecoder.decodeObjectForKey("stsVariables") as! [StsVariable])
stsVariables = [StsVariable]()
for variable in variables {
    stsVariables += [variable]
}

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