ios Swift 3 'Any?' 类型的值 没有成员“对象”
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Swift 3 Value of type 'Any?' has no member 'object'
提问by stevengbu
I have updated swift 3 and I found many errors. This is one of them :
我已经更新了 swift 3，我发现了很多错误。这是其中之一：
Value of type 'Any?' has no member 'object'
'Any?' 类型的值 没有成员“对象”
This is my code :
这是我的代码：
jsonmanager.post( "http://myapi.com",
parameters: nil,
success: { (operation: AFHTTPRequestOperation?,responseObject: Any?) in
if(((responseObject? as AnyObject).object(forKey: "meta") as AnyObject).object(forKey: "status")?.intValue == 200 && responseObject?.object(forKey: "total_data")?.intValue > 0){
let aa: Any? = (responseObject? as AnyObject).object(forKey: "response")
self.data = (aa as AnyObject).mutableCopy()
}
New Error Update :
新错误更新：
Optional chain has no effect, expression already produces 'Any?'
可选链无效，表达式已经产生“Any?”
And
和
Cannot call value of non-function type 'Any?!'
无法调用非函数类型“Any?!”的值
It works well in previous version 7.3.1 swift 2.
它在之前的 7.3.1 swift 2 版本中运行良好。
This is json response :
这是 json 响应：
{
"meta":{"status":200,"msg":"OK"},
"response":[""],
"total_data":0
}
回答by kabiroberai
Unlike Swift 2, Swift 3 imports Objective-C's idas Any?instead of AnyObject?(see thisSwift evolution proposal). To fix your error, you need to cast all of your variables to AnyObject. This may look something like the following:
与 Swift 2 不同，Swift 3 导入了 Objective-C 的idasAny?而不是AnyObject?（请参阅此Swift 进化提案）。要修复您的错误，您需要将所有变量转换为AnyObject. 这可能类似于以下内容：
jsonmanager.post("http://myapi.com", parameters: nil) { (operation: AFHTTPRequestOperation?, responseObject: Any?) in
let response = responseObject as AnyObject?
let meta = response?.object(forKey: "meta") as AnyObject?
let status = meta?.object(forKey: "status") as AnyObject?
let totalData = response?.object(forKey: "total_data") as AnyObject?
if status?.intValue == 200 && totalData?.intValue != 0 {
let aa = response?.object(forKey: "response") as AnyObject?
self.data = aa?.mutableCopy()
}
}
回答by NRitH
Your responseObjectis Optional(specifically, an Any?), so you have to unwrap it in order to call its methods or access its properties, like responseObject?.object(forKey: "meta"), etc. There are several places in the frameworks where values that used to be non-Optionalare now Optional, especially where they were used in Objective-C without a specified nullability qualifier.
你responseObject是Optional（特别是一个Any?），所以你必须解开它才能调用它的方法或访问它的属性，比如responseObject?.object(forKey: "meta")，等等。在框架中有几个地方，曾经是 non- 的值Optional现在是Optional，特别是在它们的位置在没有指定可空性限定符的情况下在 Objective-C 中使用。
