swift - 元数据？.downloadURL()?.absoluteString

Question

我对旧语法有一些问题，例如:

metadata?.downloadURL()?.absoluteString"

如何在我的代码中使用新方法？这部分代码错误:

let downloadURL = metadata?.storageReference?.downloadURLWithCompletion()

完整代码:

Storage.storage().reference().child(imgUid).putData(imgData, metadata: metadata) { (metadata, error) in
    if error != nil {
        print("Did'n upload image")
    } else {
        print("uploaded")
        let downloadURL = metadata?.storageReference?.downloadURLWithCompletion()

        if let url = downloadURL {
            self.setUser(img: url)
        }
    }
}

Answer 1

这是一种简单的方法，使用此 Func 将数据保存到 FirebaseStorage，然后将 url 作为字符串，然后将其保存在

func uploadImageToFirebaseStorage(data: Data, onSuccess: @escaping (_ imageUrl: String) -> Void) {
    let photoIdString = NSUUID().uuidString
    let storageRef = Storage.storage().reference(forURL: Config.STORAGE_REF_URL).child(POST_REF).child(photoIdString)


    storageRef.putData(data, metadata: nil) { (metadata, error) in
        if let error = error {
            debugPrint(error.localizedDescription)
            return
        }

        metadata?.storageReference?.downloadURL(completion: { (url, error) in
            if let error = error {
                print(error.localizedDescription)
                return
            }
            onSuccess("\(url!)")
        })
    }
}