在swift中从firebase存储中下载映像

Question

将图像位置设置为gs://olio-ae400.appspot.com/Listings/Food/-M3g8pZDGmApicUAQtOi/MainImage

我想从这个firebase存储位置下载到imageview。用过下面的代码，但是无法从url下载图片？

 let storage = Storage.storage()
 var reference: StorageReference!
       
        reference = storage.reference(forURL: "gs://olio-ae400.appspot.com/Listings/Food/-M3g8pZDGmApicUAQtOi/MainImage")

 reference.downloadURL { (url, error) in
           print("image url is",url!)
            let data = NSData(contentsOf: url!)
            let image = UIImage(data: data! as Data)
            self.img.image = image

        }

在响应中检索downloadURL行的url时出现错误。

下载镜像的正确方式是什么？

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Answer 1

指定路径及其扩展名，然后使用：

let path = "Listings/Food/-M3g8pZDGmApicUAQtOi/MainImage.jpg"
let reference = Storage.storage().reference(withPath: path) 

reference.getData(maxSize: (1 * 1024 * 1024)) { (data, error) in
        if let err = error {
           print(err)
      } else {
        if let image  = data {
             let myImage: UIImage! = UIImage(data: image)

             // Use Image
        }
     }
}

Answer 2

安装pod firebaseUI。

导入FirebaseUI

从存储中获取引用，并使用SDwebimage直接设置对imageview的引用，如下所示。

let ref2 = Storage.storage().reference(forURL: "gs://hungry-aaf15.appspot.com/Listings/Food/-MV04bNvewyGPHMYUkK9/MainImage") 

cell.img.sd_setImage(with: ref2)