因此在处理过程中，我有一些正在使用的代码。但这似乎无效，并且给了我let userDetails: Dictionary<String,Any> = ["username" : chosenName,"user-level" : BASIC,"email-addr" : emailAddr,acc_CREATE_DATE_STR : timeStamp,acc_LAST_actIVITY_STR : timeStamp]
ref.updateChildValues(userDetails,withCompletionBlock: { (error,ref) in
if let err = error {
let createAlert = UIAlertController(title: "Error",message: "Please try again\n\(err.localizedDescription)",preferredStyle: .alert)
createAlert.addaction(UIAlertaction(title: "Got it",style: .default,handler: nil))
self.present(createAlert,animated: true,completion: nil)
} else {
// user profile created successfully
InstanceID.instanceID().instanceID(handler: { (result,error) in
if let error = error {
print("Error fetching FCM token: \(error)")
} else if let result = result {
ref.child("fcm-token").setvalue(result.token)
}
self.dismiss(animated: true,completion: nil)
})
}
})
。
我已经将其拆分，并为变量指定了指向的位置。
NullPointerExceptions