将字典值作为 null 传递给 alamofire service ios swift

Question

我正在尝试将字典中的值作为 null 作为参数发送给 alamofire post 请求

var time: String?
 var dic = ["aaaa:add,
            "bbbb":bbbb,
            "cccc":cccc,
            "dddd": dddd,
            "eeee":eeee,
            "ffff":ffff,
            "gggg":time] as [String : Any]

我如何将变量“时间”发送为“空”。

Answer 1

null值的等价物是NSNull ，如果time为nil ，则使用 nil 合并运算符传递NSNull实例。

var time: String?
var dic : [String : Any] = ["aaaa":"add",
                            "bbbb":"bbbb",
                            "cccc":"cccc",
                            "dddd": "dddd",
                            "eeee":"eeee",
                            "ffff":"ffff",
                            "gggg":time ?? NSNull()]