Swift 4 Firebase存储元数据

Question

Can anyone help me in this problem . So I have a code for Firebase Storage using metadata, on Swift 4

Here is the code :

let imageName = NSUUID().uuidString

let storageRef = Storage.storage().reference().child("profile_images").child("\(imageName).png")

            if let uploadData = UIImagePNGRepresentation(self.profileImageView.image!) {

                storageRef.putData(uploadData, metadata: nil, completion: { (metadata, error) in

                    if error != nil {
                        print(error)
                        return
                    }

                    if let profileImageUrl = metadata?.downloadURL()?.absoluteString {

                        let values = ["name": name, "email": email, "profileImageUrl": profileImageUrl]

                        self.registerUserIntoDatabaseWithUID(uid, values: values as [String : AnyObject])
                    }
                    print(metadata)
                })

and i have error in :
if let profileImageUrl = metadata?.downloadURL()?.absoluteString

the error :

Value of type 'StorageMetadata?' has no member 'downloadURL'

This is the screenshot of my code click here

Is there a solution , thanks anyway

Answer 1

From the error, it says metadata has no member downloadURL. so, it is removed from the StorageMetadata on firebase. You can do it like this.

let imageName = NSUUID().uuidString

let storageRef = Storage.storage().reference().child("profile_images").child("\(imageName).png")

        if let uploadData = UIImagePNGRepresentation(self.profileImageView.image!) {

            storageRef.putData(uploadData, metadata: nil, completion: { (metadata, error) in

                if error != nil {
                    print(error)
                    return
                }

                storageRef.downloadURL { (url, error) in
                guard let downloadURL = url else {
                    print("an error occurred!")

                    return
                }

                let profileImageUrl = downloadURL.absoluteString
                    let values = ["name": name, "email": email, "profileImageUrl": profileImageUrl]

                    self.registerUserIntoDatabaseWithUID(uid, values: values as [String : AnyObject])

                print(metadata)
             }
            })

Detailed explanation is here at official doc

Try and share the results.