"Fatal error: unexpectedly found nil while unwrapping an Optional value" while querying from CloudKit

Question

I'm trying to get the current users first name from CloudKit using the following code:

func getUserFirstName() -> String{

    var firstNameFromFunction: String?
    var currentuserID : CKRecordID? 



    container.fetchUserRecordID(completionHandler: {
        userID, error in
        if ((error == nil)) {
            self.currentuserID = userID!

        }
    })

    container.discoverUserInfo(withUserRecordID: currentuserID!, completionHandler: {userInfo, error in

       let firstNameFromFunction = (userInfo!.displayContact?.givenName)!
    })
    return firstNameFromFunction!
}

However when executed, the currentUserID is nil, and creating the fatal error. Does anyone know why currentUserID is nil?

score 0 · Answer 1 · answered Jul 13 '17 at 06:08

0

Your App must successfully requestApplicationPermission for userDiscoverability before it can fetchUserRecordID.

answered Jul 13 '17 at 06:08

San Lewy

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13

Thanks, how do i do this? – user4174219 Jul 13 '17 at 11:07

score 0 · Answer 2 · answered Jul 14 '17 at 06:01

The code to test if a value is nil looks like this. San maybe right with his answer; I would guess it may be nil too if the user isn't logged into his appleID on the device your running it on.

if self.currentuserID = userID {
// do something with self.currentuserID (the unwrapped value of userID)
} else {
// do something now that we know userID is nil
}

"Fatal error: unexpectedly found nil while unwrapping an Optional value" while querying from CloudKit

2 Answers2