Type 'Any' has no subscript members Swift 3

Question

let message = JSON((userInfo["aps"]?["alert"])!).stringValue

When I try building I get "Type 'Any' has no subscript members"

Trying to convert to Swift 3, but can't seem to solve this error.

Answer 1

The compiler doesn't know what type userInfo["aps"] is. So it's assuming it's of type Any .

You can't call a subscript, ie, ["alert"] on Any . So it complains.

You need to unwrap it as something hashable. An example:

if let dict = userInfo["aps"] as? [String : AnyObject] {
     let message = dict["alert"]
}

Answer 2

an alternate solution to Frankies answer is this oneliner:

let message = (userInfo["aps"] as? [AnyHashable: Any])?["alert"] as? String ?? ""

in the end you have the message or an empty string if there is no message (or if the json structure is not as you expected)...