将图片上传到 Firebase 存储并显示为个人资料图片

Posted 2023-05-07

【中文标题】将图片上传到 Firebase 存储并显示为个人资料图片

【英文标题】：Upload image to Firebase Storage and show as Profile Image

【发布时间】：2019-10-17 18:12:36

【问题描述】：

我在将图片上传到 Firebase 存储方面需要帮助。我的应用程序中有一个配置文件菜单。当用户点击此菜单时，他/她可以看到带有他们的信息和个人资料图片的个人资料。所以我做了它，这样你就可以从图库中选择一张照片。但我需要将照片保存到 Firebase 存储并通过 uid 将 ref 添加到 Firebase 数据库。 另外，用户可能没有照片，所以它会为零，因为数据库中什么都没有。看照片你就明白了

extension ProfileViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate 

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) 
    var selectedImage: UIImage?
    if let editedImage = info[.editedImage] as? UIImage 
        selectedImage = editedImage
        self.profileImage.image = selectedImage!
        self.savedImage = selectedImage
        picker.dismiss(animated: true, completion: nil)
     else if let originalImage = info[.originalImage] as? UIImage 
        selectedImage = originalImage
        self.profileImage.image = selectedImage!
        self.savedImage = selectedImage
        picker.dismiss(animated: true, completion: nil)
    





let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleSelectProfileImageView) )
        profileImage.addGestureRecognizer(tapGesture)
        profileImage.isUserInteractionEnabled = true

@objc func handleSelectProfileImageView () 
    print("Tapped")

    let pickerController = UIImagePickerController()
    pickerController.delegate = self
    present(pickerController, animated: true, completion: nil)

那么，如何上传和下载图片。 如果用户没有照片（参考数据库）。他将从资产中看到图像。 如果用户有照片，他将看到来自 FB 的图像。 image

【问题讨论】：

您是否查看过 Firebase 文档 Uploading a Picture？还有一个关于如何下载的部分。这很简单。我没有看到您尝试过的任何代码，因此不清楚问题所在。请查看以下指南How to create a Minimal, Complete, and Verifiable example

【参考方案1】：

用于上传到 Firebase 存储

let imgData: NSData = NSData(data: UIImageJPEGRepresentation((self.img_Photo?.image)!, 0.5)!)
let _:NSData = NSData(data:UIImagePNGRepresentation(((self.img_Photo?.image)!))!)
self.uploadProfileImageToFirebase(data: imgData)

上传功能

func uploadProfileImageToFirebase(data:NSData)
    let randomPic = randomString(length: 10)
    let storageRef = Storage.storage().reference().child("Pictures").child("\(value(forKey: "UserUID") ?? randomPic).jpg")
    if data != nil 
        storageRef.putData(data as Data, metadata: nil, completion:  (metadata, error) in
            if(error != nil)
                print(error)
                return
            
            guard let userID = Auth.auth().currentUser?.uid else 
                return
            
            // Fetch the download URL
            storageRef.downloadURL  url, error in
                if let error = error 
                    // Handle any errors
                    if(error != nil)
                        print(error)
                        return
                    
                 else 
                    // Get the download URL for 'images/stars.jpg'

                    let urlStr:String = (url?.absoluteString) ?? ""
                    let values = ["photo_url": urlStr]
                    self.registerUserIntoDatabaseWithUID(uid: userID, values: values as [String : AnyObject])
                
            
        )
    



func registerUserIntoDatabaseWithUID(uid:String, values:[String:AnyObject])
    let ref = Database.database().reference(fromURL: "https://domain.firebaseio.com/")
    let usersReference = ref.child("users").child((Auth.auth().currentUser?.uid)!)

    usersReference.updateChildValues(values)  (error, ref) in
        if(error != nil)
            print(error)
            return
        
        self.parentVC?.dismiss(animated: true, completion: nil)