Swift 将映像从firebase存储传输到firebase数据库

我在firebase存储器中为每个用户存储了一张个人资料图片。以下是参考资料：

profilePicRef = FIRStorage.storage().reference().child((FIRAuth.auth()?.currentUser.uid)!+"/profile_pic.jpg")

我希望能够从存储器中访问图片，并使用以下路径将其放入数据库：

@IBAction func Post(_ sender: AnyObject) {

   let postObject: Dictionary<String, Any> = [

         "userpic" : ""
    ]

FIRDatabase.database().reference().child("posts").child(self.loggedInUser!.uid).childByAutoId().setValue(postObject)

 }

@IBAction func Post（u发送方：AnyObject）{
让postObject:字典=[
“userpic”：”
]
FIRDatabase.database（）.reference（）.child（“posts”）.child（self.loggedInUser！.uid）.childByAutoId（）.setValue（postObject）
}

---

我不清楚“userpic”旁边的引号中是什么内容数据库本身并不适合存储照片（但是从技术上来说，你可以做一个简单的选择，如果图像非常小，这可能会更好）

我发现最适合配置文件图像的方法是基于UID将它们存储在Firebase存储中。当我想上传图像时，我会先调整它的大小：

// from https://stackoverflow.com/a/29138120/1822214.  Only for square images.
func resizeWith(_ width: CGFloat) -> UIImage? {
    let imageView = UIImageView(frame: CGRect(origin: .zero, size: CGSize(width: width, height: CGFloat(ceil(width/size.width * size.height)))))
    imageView.contentMode = .scaleAspectFit
    imageView.image = self
    UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, false, scale)
    guard let context = UIGraphicsGetCurrentContext() else { return nil }
    imageView.layer.render(in: context)
    guard let result = UIGraphicsGetImageFromCurrentImageContext() else { return nil }
    UIGraphicsEndImageContext()
    return result
}

然后我像这样上传它：

    func uploadProfilePic(_ uid: String, image: UIImage?, completion: @escaping (Bool) -> ())
        // compress with moderate quality (between 0 and 1)
        let data: Data = UIImageJPEGRepresentation(image!, 0.5)!
        let profileRef = storageRef.child("users/\(uid)/profile.jpg")

        let metadata = FIRStorageMetadata()
        metadata.contentType = "image/jpg"

        // Upload the file
        let uploadTask = profileRef.put(data, metadata: metadata) { metadata, error in
            if (error != nil) {
                // Uh-oh, an error occurred!
                print("there was an error uploading the profile pic!")
                print(error)
                // completion with failure... :(
                completion(false)
            } else {
                // Metadata contains file metadata such as size, content-type, and download URL.
                let downloadURL = metadata!.downloadURL
                // completion with success!
                completion?(true)
            }
        }
    }

我希望这能让你开始，如果你有任何问题，请告诉我