Question

我想将Jpeg类型的图像上传到Firebase存储

以下是上传到Firebase存储的功能

func uploadImageToFirebase (data: NSData){

         let StorageRef = Storage.storage().reference().child("User Products")
        let uploadMetadata = StorageMetadata()
        uploadMetadata.contentType = "image/jpeg"
        StorageRef.putData(data as Data, metadata: uploadMetadata) { (metadata, error) in
            if (error != nil){

                print("I have an error")
            }else {
                print("upload metadata \(String(describing: metadata))")
            }

        }

这里我有一个选择器控制器函数，该函数位于另一个名为CamViewController

的类中

在这里，我从Mainviewcontroller类调用该函数

var discover = MainViewController()
 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage
          imageCam.image = image

        discover.uploadImageToFirebase(data: image)

        picker.dismiss(animated: true, completion: nil)

    }

我得到了错误：

无法将类型UIImage?的值转换为预期的参数类型NSData

Answer 1

您需要

func uploadImageToFirebase (_ image:UIImage){
  gurad let data = image.pngData() else { return }
  ..... OR
  guard let data = image.jpegData(compressionQuality: 0.5) else { return }

}

discover.uploadImageToFirebase(image)

错误很明显，参数类型为NSData，所以您不能传递UIImage

我有一个“ UIImage”，我想将其转换为NSData以上传到Firebase存储上

1 个答案: