Question

制作一个涉及上传图片的简单应用程序，但我不知道如何解决此错误。是的，我是Swift和Firebase的新手。

Source = ../Src
Source_Files = $(Source)/File_1.c  \
               $(Source)/File_2.c 

Obj = ./Obj
Object_Files = $(notdir $(Source_Files))
Object_Files := $(Object_Files:.c=.o)
Object_Files := $(addprefix $(Obj)/, $(Object_Files))

all: $(Object_Files)

$(Object_Files): $(Source_Files) 
    @echo Compile $<
    @gcc -o $@ -c $<

收到此错误：

 guard let image = self.plusPhotoButton.imageView?.image else { return }
        guard let uploadData = image.jpegData(compressionQuality: 0.3) else { return }

        let filename = NSUUID().uuidString

        let storageRef = Storage.storage().reference().child("profile_images").child(filename)
        storageRef.putData(uploadData, metadata: nil, completion: { (metadata, err) in

            if let err = err {
                print("Failed to upload profile image:", err)
                return
            }
        },
        storageRef.downloadURL(completion: { (downloadURL, err) in
            if let err = err {
                print("Failed to fetch downloadURL:", err)
                return

            }
            guard let profileImageUrl = downloadURL?.absoluteString else { return }

            print("Successfully uploaded profile image:", profileImageUrl)
        })


    )}
    }

Answer 1

括号中有一个错误。

guard let image = self.plusPhotoButton.imageView?.image else { return }
        guard let uploadData = image.jpegData(compressionQuality: 0.3) else { return }

        let filename = NSUUID().uuidString

        let storageRef = Storage.storage().reference().child("profile_images").child(filename)
        storageRef.putData(uploadData, metadata: nil, completion: { (metadata, err) in

            if let err = err {
                print("Failed to upload profile image:", err)
                return
            }
        },
        storageRef.downloadURL(completion: { (downloadURL, err) in
            if let err = err {
                print("Failed to fetch downloadURL:", err)
                return

            }
            guard let profileImageUrl = downloadURL?.absoluteString else { return }

            print("Successfully uploaded profile image:", profileImageUrl)
        })


    )}  //Replace With }) 
}

对成员'putData'错误的引用不明确

1 个答案: