同意杰伊的评论。您无法返回那样的状态，因为Firebases异步工作…我要做的是添加一个闭包参数，该参数在完成时执行，如下所示：
class signUpClass：UIViewController {
// check to see if form is emptylet ihelpController = UIViewController()var CurrentStatus:status!func signUp(var formArray: [String:String], complete:(CurrentStatus)->()){ var formStatus:status = ihelpController.checkIfFormIsEmpty(formArray) if (formStatus == status.success){ //form is ok to process // check DOB //TODO: create date calculation function let DateOfBirth:Int = 18 if DateOfBirth < 18 {//user is not 18 they can not register alertError("oops", message: "You must be 18 to register", comfirm: "Ok") } else { //Proceed with registration let firebaseController = Firebase() var email = "asdf@afd.com" var password = "1234" firebaseController.refPath("users").createUser(email, password: password, withValueCompletionBlock: {error, result in if error != nil { print("registration Error") self.alertError("oops", message: "That email is registered already", comfirm: "OK") } else { let vc = print("user can register") firebaseController.firebaseRefUrl().authUser(email, password: password, withCompletionBlock:{ error, authdata in if error != nil { print("login Error") }else{ let userId = firebaseController.firebaseRefUrl().authData.uid formArray["userId"] = userId firebaseController.refPath("users/(userId)").updateChildValues(formArray) print("user is register and can proceed to dashBoard") //Send status to callback to handle complete(status.success) } }) } }) } }}
