使用 firebase 生成下载 link

Question

我正在创建一个应用程序，允许用户上传图像，然后在文本字段中直接显示 link。

这是负责将图像上传到我的存储桶的代码，它在用户按下上传按钮时触发。

    @IBAction func upload(_ sender: Any) {

    let imageContained = viewimage.image

    let storage = Storage.storage()
    var storageRef = storage.reference()
    storageRef = storage.reference(forURL: "bucket link")

    var data = NSData()
    data = UIImageJPEGRepresentation(imageContained!, 0.8)! as NSData
    let dateFormat = DateFormatter()
    dateFormat.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
    let imageName = dateFormat.string(from: NSDate() as Date)
    let imagePath = "images/\(imageName).jpg"

    let mountainsRef = storageRef.child(imagePath)

    let metadata = StorageMetadata()
    metadata.contentType = "image/jpeg"

    mountainsRef.putData(data as Data, metadata: metadata)

如何为用户生成直接 link？

Answer 1

使用下面这个函数

 func uploadProfilePic(){
        var data = NSData()
        data = UIImageJPEGRepresentation(ivProfile.image!, 0.8)! as NSData
        // set upload path
        let filePath = "\(userid)" // path where you wanted to store img in storage
        let metaData = FIRStorageMetadata()
        metaData.contentType = "image/jpg"

        self.storageRef = FIRStorage.storage().reference()
        self.storageRef.child(filePath).put(data as Data, metadata: metaData){(metaData,error) in
            if let error = error {
                print(error.localizedDescription)
                return
            }else{
                //store downloadURL
                let downloadURL = metaData!.downloadURL()!.absoluteString

            }
        }

    }

Answer 2

带有完成处理程序的上传函数。

func uploadMedia(completion: @escaping (_ url: String?) -> Void) { 
    let storageRef = FIRStorage.storage().reference().child("myImage.png")
    if let uploadData = UIImagePNGRepresentation(self.myImageView.image!) {
        storageRef.put(uploadData, metadata: nil) { (metadata, error) in
            if error != nil {
                print("error")
                completion(nil)
            } else {
                completion((metadata?.downloadURL()?.absoluteString)!)) 
                // your uploaded photo url.
            }
       }
 }

希望对您有所帮助

使用 firebase 生成下载 link

Generating a download link using firebase

ios

firebase

swift

swift3

firebase-storage