将 UIImage 从 ImagePicker 解包到 Firebase.Storage 时致命

Question

尝试从 UIImagePicker 创建存储在 Firebase 中的图像，在接收时抛出致命错误，因为 ImageData 为 nil。图像选择器 return 怎么可能为零？

func imagePickerController(_ picker: UIImagePickerController,
                           didFinishPickingMediaWithInfo info: [String : Any]) {
    picker.dismiss(animated: true, completion:nil)
    guard let uid = Auth.auth().currentUser?.uid else { return }

        guard let image = info[UIImagePickerControllerOriginalImage] as? UIImage else { return }
        let imageData = UIImageJPEGRepresentation(image, 0.8)
        let imagePath = "\(uid)/\(Int(Date.timeIntervalSinceReferenceDate * 1000)).jpg"
        let metadata = StorageMetadata()
        metadata.contentType = "image/jpeg"
        self.storageRef.child(imagePath)
            .putData(imageData!, metadata: metadata) { [weak self] (metadata, error) in
                if let error = error {
                    print("Error uploading: \(error)")
                    return
                }



    }

Answer 1

你能删除这一行吗，

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

并将其放在 imagePickerController 方法的末尾而不是开头。您似乎过早地关闭了选择器，结果图像变成了 nil。

将 UIImage 从 ImagePicker 解包到 Firebase.Storage 时致命

fatal when unwrapping UIImage from ImagePicker to Firebase.Storage

uiimagepickercontroller

ios

firebase

swift

firebase-storage