Cookie数据无法在Swift 2（AppleTV）中取消归档

Question

当我的应用尝试使用以下代码取消归档cookie数据时，它总是崩溃。

if cookieData.length > 0 {
    let cookies: [NSHTTPCookie] = NSKeyedUnarchiver.unarchiveObjectWithData(cookieData) as! [NSHTTPCookie]
    for cookie: NSHTTPCookie in cookies {
            NSHTTPCookieStorage.sharedHTTPCookieStorage().setCookie(cookie)
    }
}

我收到以下错误：

Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

你能告诉我如何修复这个错误吗？

Answer 1

我自己解决了。以下代码确实有效：

if cookieData.length > 0 {
    if let cookies: [NSHTTPCookie] = NSKeyedUnarchiver.unarchiveObjectWithData(cookieData) as? [NSHTTPCookie]{
        for cookie: NSHTTPCookie in cookies {
            NSHTTPCookieStorage.sharedHTTPCookieStorage().setCookie(cookie)
        }
    }
}