Question

我目前正在学习如何向/从Firebase上传/下载图像。但是，我遇到了两个问题：

当我将图片上传到我的Firebase控制台时，它说它的类型是＆＃34; application / octet-stream＆＃34;这不是我想要的（我上传了一个jpeg文件）

以下是代码：

@IBAction func completeSignUpButton(_ sender: UIButton) {
    let userProfileImageRef = storage.child("userProfileImage")

    //UPloading the photo into firebase
    let data = Data()
    //uploading user profile picture
    if self.userInitialPhoto.image != nil {
        if let uploadData = UIImagePNGRepresentation(self.userInitialPhoto.image!) {
            userProfileImageRef.putData(uploadData, metadata: nil, completion: { (metadata, error) in

                if error != nil {
                    print(error?.localizedDescription)
                    return
                } else {
                    print("Image upload success!")
                    //self.dismiss(animated: true, completion: nil)
                    self.performSegue(withIdentifier: "completeRegistrationSegue", sender: self)
                }
            })

        }

    } else {
        print("You need to pick a picture!")

    }

}

所以这可能是造成我第二个问题的问题：

当我尝试在我的应用中将图像从Firebase加载到我的UIImage时，会显示对象可选（\＆＃34; userID \＆＃34;）/ userProfileImage不存在。＆＃34;

这是我的代码：

 override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
    docRef = Firestore.firestore().collection("user Status").document("Current Status")
    self.userStatusTableView.reloadData()
    let referencePath = Storage.storage().reference(withPath: "\(userID)/userProfileImage")
    let userProfileImageRef = Storage.storage().reference().child("\(userID)/userProfileImage")
    userProfileImageRef.getData(maxSize: 1 * 1024 * 1024) { (data, error) in
        if error != nil {
            print("There's an eror downloading the image\(error?.localizedDescription)")
        } else {
            self.userProfileImage.image = UIImage(data: data!)
        }
    }
}

我想知道如何解决这些问题。

感谢您的帮助，祝大家新年快乐。

Answer 1

将图片上传到firebase时，您将元数据传递为nil。你需要在那里传递图像元数据

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

并在上传complitionBlock中，您可以使用

获取该图片的网址

if error == nil , let meta = meta {
     if let url = meta.downloadURL()?.absoluteString {
           //use this url to access your image
     }
}

Firebase图片对象不存在？

1 个答案: