How to use "StorageReference.downloadURLWithCompletion()" in Firebase? - ios

Question

Hi I have Question about making ios Application wiht Firebase
Nowadays I am making a chat Application using watching an YouTube
https://www.youtube.com/watch?v=MJ1r5jjdf4Q&index=4&list=PLmdU__e_zPf9uczwNhLNANvxT5mzxMiXQ
In here
At the Source code, let imageUrl = data?.downloadURL()?.absoluteString this got an error "Value of type 'StorageMetadata' has no member 'downloadURL'"
I heard the downloadURL() was deprecated in Firebase So, docs said using StorageReference.downloadURLWithCompletion() instead of downloadURL.
But I don't know how to change the code.
Please tell me how to change the code. And chage the code
Thank you!
func signupEvent(){
Auth.auth().createUser(withEmail: email.text!, password: password.text!){(user,err) in
let uid = user?.user.uid
let image = UIImageJPEGRepresentation(self.imageView.image!, 0.1)
Storage.storage().reference().child("userImage").child(uid!).putData(image!, metadata:nil, completion:{(data, error) in
let imageUrl = data?.downloadURL()?.absoluteString
Database.database().reference().child("users").child(uid).setValue(["name": self.name.text!, "profileImageUrl" : imageUrl])
})
}
}

Answer 1

You can check the updated documentation of Firebase 5 upload files here, the API changed so you should use StorageReference's downloadURL method.
So your code become something like this:
func signupEvent(){
Auth.auth().createUser(withEmail: email.text!, password: password.text!){(user,err) in
let uid = user?.user.uid
let image = UIImageJPEGRepresentation(self.imageView.image!, 0.1)
let storageItem = Storage.storage().reference().child("userImage").child(uid!)
storageItem.putData(image!, metadata:nil, completion:{(data, error) in
// Now is good to check errors
if error != nil {
print("Error: couldn't upload the image")
}
else {
storageItem.downloadURL(completion: { (url, error) in
if error != nil {
print(error!)
return
}
if url != nil {
let imageUrl = url!.absoluteString
Database.database().reference().child("users").child(uid).setValue(["name": self.name.text!, "profileImageUrl" : imageUrl])
}
}
}
})
}
}