将Firebase导入到我想为iOS创建的项目（Swift）之后 我试图用ProfileImage和Username创建一个用户。 当我点击“创建帐户”时，我收到一条错误消息，提示“注册错误”。
这是终端中的错误消息 2018-07-20 23：15：50.764062 + 0200收集应用程序[3341：120860] [发现]在发现扩展时遇到的错误：错误域= PlugInKit代码= 13“查询已取消” UserInfo = {NSLocalizedDescription =查询已取消}
我将在此处粘贴我的代码。
//
// SignUpViewController.swift
import Foundation
import UIKit
import Firebase
import FirebaseAuth
import FirebaseDatabase
import FirebaseStorage
class SignUpViewController: UIViewController {
@IBOutlet weak var userNameTextField: UITextField!
@IBOutlet weak var userEmailTextField: UITextField!
@IBOutlet weak var userPasswordTextField: UITextField!
@IBOutlet weak var confirmuserPasswordTextField: UITextField!
@IBOutlet weak var profileImageView: UIImageView!
@IBOutlet weak var dismissButton: UIButton!
@IBAction func tapToChangeProfileButton(_ sender: Any) {
}
@IBAction func handleDismissButton(_ sender: Any) {
self.dismiss(animated: false, completion: nil)
}
var imagePicker:UIImagePickerController!
private var authUser : User? {
return Auth.auth().currentUser
}
public func sendVerificationMail() {
if self.authUser != nil && !self.authUser!.isEmailVerified {
self.authUser!.sendEmailVerification(completion: { (error) in
// Notify the user that the mail has sent or couldn't because of an error.
})
}
else {
// Either the user is not available, or the user is already verified.
}
}
override func viewDidLoad() {
super.viewDidLoad()
let imageTap = UITapGestureRecognizer(target: self, action: #selector(openImagePicker))
profileImageView.isUserInteractionEnabled = true
profileImageView.addGestureRecognizer(imageTap)
profileImageView.layer.cornerRadius = profileImageView.bounds.height / 2
profileImageView.clipsToBounds = true
//tapToChangeProfileButton.addTarget(self, action: #selector(openImagePicker), for: .touchUpInside)
imagePicker = UIImagePickerController()
imagePicker.allowsEditing = true
imagePicker.sourceType = .photoLibrary
imagePicker.delegate = self
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@objc func openImagePicker(_ sender:Any) {
// Open Image Picker
self.present(imagePicker, animated: true, completion: nil)
}
@IBAction func CreateAccount(_ sender: Any) {
guard let username = userNameTextField.text else { return }
guard let email = userEmailTextField.text else { return }
guard let pass = userPasswordTextField.text else { return }
guard let image = profileImageView.image else { return }
Auth.auth().createUser(withEmail: email, password: pass) { user, error in
if error == nil && user != nil {
print("User created!")
// 1. Upload the profile image to Firebase Storage
self.uploadProfileImage(image) { url in
if url != nil {
let changeRequest = Auth.auth().currentUser?.createProfileChangeRequest()
changeRequest?.displayName = username
changeRequest?.photoURL = url
changeRequest?.commitChanges { error in
if error == nil {
print("User display name changed!")
self.saveProfile(username: username, profileImageURL: url!) { success in
if success {
self.dismiss(animated: true, completion: nil)
} else {
self.resetForm()
}
}
} else {
print("Error: \(error!.localizedDescription)")
self.resetForm()
}
}
} else {
self.resetForm()
}
}
} else {
self.resetForm()
}
}
}
func resetForm() {
let alert = UIAlertController(title: "Error signing up", message: nil, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Okay", style: .default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
func uploadProfileImage(_ image:UIImage, completion: @escaping ((_ url:URL?)->())) {
guard let uid = Auth.auth().currentUser?.uid else { return }
let storageRef = Storage.storage().reference().child("user/\(uid)")
// Create a reference to the file you want to download
let starsRef = storageRef.child("images/stars.jpg")
// Fetch the download URL
starsRef.downloadURL { url, error in
if let error = error {
// Handle any errors
} else {
// Get the download URL for 'images/stars.jpg'
}
}
}
func saveProfile(username:String, profileImageURL:URL, completion: @escaping ((_ success:Bool)->())) {
guard let uid = Auth.auth().currentUser?.uid else { return }
let databaseRef = Database.database().reference().child("users/profile/\(uid)")
let userObject = [
"username": username,
"photoURL": profileImageURL.absoluteString
] as [String:Any]
databaseRef.setValue(userObject) { error, ref in
completion(error == nil)
}
}
@IBAction func AlreadyaccountButtonTapped(_ sender: Any) {
print("Already account Button Tapped")
let LoginViewController = self.storyboard?.instantiateViewController(withIdentifier: "LoginViewController") as! LoginViewController
self.present(LoginViewController, animated: true)
}
//EmailVerificationViewController
@IBAction func ResendEmailVerificationTapped(_ sender: Any) {
self.sendVerificationMail()
}
@IBAction func LoginButtonTapped(_ sender: Any) {
print("Login Button Tapped")
let LoginViewController = self.storyboard?.instantiateViewController(withIdentifier: "LoginViewController") as! LoginViewController
self.present(LoginViewController, animated: true)
}
func displayMessage(userMessage:String) -> Void {
DispatchQueue.main.async
{
let alertController = UIAlertController(title: "Alert", message: userMessage, preferredStyle: .alert)
let OKAction = UIAlertAction(title: "OK", style: .default) { (action:UIAlertAction!) in
// Code in this block will trigger when OK button tapped.
print("Ok button tapped")
DispatchQueue.main.async
{
self.dismiss(animated: true, completion: nil)
}
}
alertController.addAction(OKAction)
self.present(alertController, animated: true, completion:nil)
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
}
}
extension SignUpViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let pickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
self.profileImageView.image = pickedImage
}
picker.dismiss(animated: true, completion: nil)
}
}
感谢您的时间！
现在，新代码中出现了我在评论中提到的另一个i错误
@IBAction func CreateAccount(_ sender: Any) {
guard let username = userNameTextField.text else { return }
guard let image = profileImageView.image else { return }
Auth.auth().createUser(withEmail: self.userEmailTextField.text!, password: self.userPasswordTextField.text!) { user, error in
if error == nil && user != nil {
print("User created!")
// 1. Upload the profile image to Firebase Storage
self.uploadProfileImage(image, uid: user.uid) { url in
if url != nil {
let changeRequest = Auth.auth().currentUser?.createProfileChangeRequest()
changeRequest?.displayName = username
changeRequest?.photoURL = url
changeRequest?.commitChanges { error in
if error == nil {
print("User display name changed!")
self.saveProfile(username: username, profileImageURL: url!) { success in
if success {
self.dismiss(animated: true, completion: nil)
} else {
self.resetForm()
}
}
} else {
print("Error: \(error!.localizedDescription)")
self.resetForm()
}
}
} else {
self.resetForm()
}
}
} else {
self.resetForm()
}
}
}
func resetForm() {
let alert = UIAlertController(title: "Error signing up", message: nil, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Okay", style: .default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
func uploadProfileImage(_ image:UIImage, uid:String, completion: @escaping ((_ url:URL?)->())) {
let storageRef = Storage.storage().reference().child("user/\(uid)")
// Create a reference to the file you want to download
let starsRef = storageRef.child("images/stars.jpg")
// Fetch the download URL
starsRef.downloadURL { url, error in
if let error = error {
// Handle any errors
} else {
// Get the download URL for 'images/stars.jpg'
}
}
}
答案 0 :(得分：0)
您收到该错误，因为您的网址为nil。
这是零，因为您正在创建用户，成功创建后将调用self.uploadProfileImage(image)来获取当前用户的图像URL，但该用户尚未登录。
解决方案是：
登录用户并成功登录，然后致电uploadProfileImage。