ios - Type 'Any' has no subscript members after updating to Swift 3

Question

Here is my code in Swift:

currentUserFirebaseReference.observeSingleEvent(of: .value, with: { (snapshot: FIRDataSnapshot) in
        let UID = snapshot.key
        let pictureURL = snapshot.value!["pictureURL"] as! String
        let name = snapshot.value!["displayname"] as! String
        let currentUser = Person(name: name, bio: "", UID: UID, pictureURL: pictureURL)
        self.currentUserInfo = currentUser
            })

I just updated to Xcode 8 / Swift 3, which seems to have caused the following error message:

"Type 'Any' has no subscript members"

I call snapshot.value!["insert something here"] in many places in my code, I'm getting this error and I can't run my code.

The following code works:

let pic = (snapshot.value as? NSDictionary)?["pictureURL"] as? String ?? ""

However, I don't see what changed or what makes this necessary now versus how it was before.

The only thing that has changed as far as I'm aware is the syntax of the observe, but I don't understand why this caused my code to stop working.

Answer 1

Waitting for answers