JSON AnyObject要布爾總是返回零

Question

if let service = dict["service"] as? [String: AnyObject] {//dict is JSON object 
     if let boolValue = service["isDeliverable"] {//Value is: false 
      let isTrueVal = boolValue as! Bool // Crash as Bool is not a type of AnyObject 
      let isTrueVal = boolValue as? Bool // Always returns nil 
     } 
    } 

如何投射Swift類型Bool的AnyObject？

Answer 1

As I found that using CFBoolean可以實現這一點：

CFBoolean對象用來包裝布爾值在覈心 基金財產清單和集合類型使用。

if let service = dict["service"] as? [String: AnyObject] { 
     if let boolValue = service["isDeliverable"] { 
      let isTrueVal = (boolValue as! CFBoolean) as Bool 
     } 
    }