Download URL of firebase storage not working - ios

Question

I'm using the firebase for chat application and I've already stored the images in firebase storage now I want to get the url to fetch the user profile but it's not working even I've tried but nothing is working
Here is the function on line 3rd it generates an error (Value of type 'DatabaseReference' has no member 'downloadURL')
func downloadURL(for path: String, completion: #escaping (Result<URL, Error>) -> Void) {
let refrence = database.child(path)
refrence.downloadURL(completion: { url, error in //here downnloadUrl not working perfectly
guard let url = url, error == nil else {
completion(.failure(StorageErrors.failedToGetDownloadUrl))
return
}
completion(.success(url))
})
}
NetworkingService Class
struct NetworkingService{
static let shared = NetworkingService()
private init(){
}
private let database = Database.database().reference() //creating refrence
public func test(){
database.child("name").setValue(["faheem":true])
}
static func emailForImage(emailAddress: String) -> String{
var safeEmail = emailAddress.replacingOccurrences(of: ".", with: "-")
safeEmail = safeEmail.replacingOccurrences(of: "#", with: "-")
return safeEmail
}
func downloadURL(for path: String, completion: #escaping (Result<URL, Error>) -> Void) {
let refrence = database.child(path)
refrence.downloadURL(completion: { url, error in
guard let url = url, error == nil else {
completion(.failure(StorageErrors.failedToGetDownloadUrl))
return
}
completion(.success(url))
})
}
func userExists(email: String,completion: #escaping((Bool) -> Void)){ //return boolen
var safeEmail = email.replacingOccurrences(of: ".", with: "-")
safeEmail = safeEmail.replacingOccurrences(of: "#", with: "-")
database.child(safeEmail).observeSingleEvent(of: .value) { (snapshot) in
guard let foundEmail = snapshot.value as? String else {
completion(false)
return
}
}
completion(true)
}
func insertUser(user: CUser, completion: #escaping(Result<CUser,Error>) -> Void){
database.child(user.identifier).setValue(user.getDict) { (err, dbRef) in
if err != nil{
completion(.failure(err!))
}else{
completion(.success(user))
}
}
}
}
StoreManager Class
struct StoreManager{
static let shared = StoreManager()
private let storageRefrence = Storage.storage().reference()
func uploadProfilePic(data: Data, fileName: String, completion: #escaping(Result<String,Error>) -> Void){
storageRefrence.child("images/\(fileName)").putData(data,metadata: nil) { (metaData, error) in
guard error == nil else {
completion(.failure(AppError.failedToUpload))
print("faheem ye he error \(error?.localizedDescription)")
return
}
self.storageRefrence.child("images/\(fileName)").downloadURL { (url, error) in
guard let url = url else {
completion(.failure(AppError.failedtoDownloadUrl))
return
}
let urlString = url.absoluteString
print("download url is\(urlString)")
completion(.success(urlString))
}
}
}
}
SignupUserClass
class SignUpUserViewController: UIViewController {
#IBOutlet weak var userProfile: UIImageView!
#IBOutlet weak var lname: UITextField!
#IBOutlet weak var fname: UITextField!
#IBOutlet weak var email: UITextField!
#IBOutlet weak var password: UITextField!
var imagePicker = UIImagePickerController() // for imagepicker
private let spinner = JGProgressHUD(style: .dark)
var user:CUser!
override func viewDidLoad() {
super.viewDidLoad()
password.isSecureTextEntry = true
userProfile.layer.masksToBounds = true
userProfile.layer.borderWidth = 2
userProfile.layer.borderColor = UIColor.lightGray.cgColor
userProfile.layer.cornerRadius = userProfile.frame.size.height / 2
// for rounder image
userProfile.isUserInteractionEnabled = true /
let gesture = UITapGestureRecognizer(target: self, action: #selector(userProfileChange)) //photopcker
userProfile.addGestureRecognizer(gesture)
}
#objc private func userProfileChange(){
print("profile pic changed")
getPhoto()
}
private func insertUser(_ user:CUser){
NetworkingService.shared.insertUser(user: user) { (result) in
switch result{
case .success(let user):
print("User inserted: ", user.getDict)
CUser.shared = user
print("sahed Data is fahem\(CUser.shared)")
case .failure(let error):
print("Error: ",error.localizedDescription)
self.showAlert(message: error.localizedDescription)
}
}
}
private func createUser(_ user:CUser){
FirebaseAuth.Auth.auth().createUser(withEmail: user.email, password: user.password) { [weak self] (respomse, error) in
guard let data = respomse else {
print("Error: ",error?.localizedDescription ?? "")
self?.showAlert(message: error?.localizedDescription ?? "")
return
}
self?.insertUser(user)
}
}
private func uploadImage(_ imageData:Data) {
StoreManager.shared.uploadProfilePic(data: imageData, fileName: user.imageName) { (result) in
switch result{
case .success(let url):
self.user.imageURL = url
self.createUser(self.user)
case .failure(let error):
print("Error: ",error.localizedDescription)
self.showAlert(message: error.localizedDescription)
}
}
}
// register User
#IBAction func register(_ sender: UIButton) {
if checkTextFields([email,password,fname,lname]) {
showAlert(message: "Some fields are missing")
}else{
spinner.show(in: self.view)
NetworkingService.shared.userExists(email: email.text!) { (response) in//checking user through email
self.spinner.dismiss()
guard response != nil else { //measn user exists
self.showAlert(message: "user account already exits we verify through email")
return
}
self.user = CUser(firstName: self.fname.text!, lastName: self.lname.text!, email: self.email.text!, password: self.password.text!, imageURL: "")
/*image url is nil becuase we not upload the image here wehn calling the upload image method
then after setting create user method here we only setting the data in user model and url nil*/
if let userImage = self.userProfile.image!.jpegData(compressionQuality: 0.2) {
self.uploadImage(userImage)
}else{
print("Error: Image cannot be compressed")
}
}
}
}
func checkTextFields(_ textfields:[UITextField]) -> Bool{
for textfield in textfields {
return textfield.text?.isEmpty == true ? true: false
}
return true
}
func gotOLogin(){
guard let loginController = self.storyboard?.instantiateViewController(withIdentifier: String(describing: LoginUserViewController.self)) as? LoginUserViewController else {return}
self.navigationController?.pushViewController(loginController, animated: true)
}
func showAlert(title:String = "Error", message:String){
let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)
let ok = UIAlertAction(title: "ok", style:.default, handler: nil)
alertController.addAction(ok)
self.present(alertController, animated: true, completion: nil)
}
}
extension SignUpUserViewController : UIImagePickerControllerDelegate, UINavigationControllerDelegate{
func getPhoto(){
let actionSheet = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
actionSheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
actionSheet.addAction(UIAlertAction(title: "Take Photo", style: .default, handler: {
[weak self] _ in
self?.presentCamera()
}))
actionSheet.addAction(UIAlertAction(title: "Choose Photo", style: .default, handler: { [weak self] _ in
self?.profilePhotoPicker()
}))
present(actionSheet, animated: true, completion: nil)
}
func presentCamera(){ //not allowed in simualtor to capture photo
imagePicker.sourceType = .camera
imagePicker.delegate = self
imagePicker.allowsEditing = true
present(imagePicker, animated: true, completion: nil)
}
func profilePhotoPicker(){
imagePicker.sourceType = .photoLibrary
imagePicker.delegate = self
imagePicker.allowsEditing = true
present(imagePicker, animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) { //called when select photo
print(info)
userProfile.image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage
imagePicker.dismiss(animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
}
ProfileViewcontroler here is getProfilePic fun i already get all the necessary thing but issue is that in networking class download url is not working
class ProfileViewController: UIViewController {
var logoutUser = ["lgout"]
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var currentUserPic: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
tableView.register(UINib(nibName: String(describing: ProfileCell.self), bundle: .main), forCellReuseIdentifier: String(describing: ProfileCell.self))
}
func getProfilePic(){
guard let userEmail = UserDefaults.standard.value(forKey: "useremail") as? String else {
return}
let userEmailForPic = NetworkingService.emailForImage(emailAddress: userEmail)
let fileName = userEmailForPic + "_profile_image_jpg"
let patheStorage = "images/"+fileName//here i want to fetch the pic but in netwroking class downnload url not working
}
}

Answer 1

Firebase Realtime Database and Firebase Storage are separated services. You should be using downloadURL on a storage reference:
func downloadURL(for path: String, completion: #escaping (Result<URL, Error>) -> Void) {
let reference = Storage.storage().reference().child(path)
reference.downloadURL(completion: { url, error in
guard let url = url, error == nil else {
completion(.failure(StorageErrors.failedToGetDownloadUrl))
return
}
completion(.success(url))
})
}