由于将映像上传到Firebase Storage Swift而导致内存崩溃

Question

我会尽快介绍。用户上载个人资料照片的时间大约为10％，该应用由于内存泄漏而崩溃。我尝试了很多不同的方法来尝试防止这种情况，但是由于某种原因，这种情况发生的时间很少。请我不知道为什么某些用户在上传照片时会崩溃。 （我认为它发生在didFinishPickingMediaWithInfo函数中）。

class CustomImagePickerController: UIImagePickerController  {
    var imageBttn: UIButton?
}

@objc private func handleSelectPhoto() {
        let alert = UIAlertController(title: "Access your photos", message: "Can Crusht open your photos so you can select a profile picture?", preferredStyle: .alert)

        let action = UIAlertAction(title: "Yes", style: .default){(UIAlertAction) in
            let imagePicker = CustomImagePickerController()
            imagePicker.delegate = self
            imagePicker.imageBttn = self.selectPhotoButton
           self.present(imagePicker, animated: true)
        }

        let cancel = UIAlertAction(title: "No", style: .cancel, handler: nil)
        alert.addAction(action)
        alert.addAction(cancel)
        self.present(alert, animated: true, completion: nil)
        return
    }

extension EnterPhotoController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @objc func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        weak var selectedImage = info[.originalImage] as? UIImage
        let imageButton = (picker as? CustomImagePickerController)?.imageBttn
        imageButton?.setImage(selectedImage?.withRenderingMode(.alwaysOriginal), for: .normal)
        self.imageFull = true

        dismiss(animated: true)

        self.errorLabel.text = "Registering, hang tight..."
        self.errorLabel.isHidden = false
        self.selectPhotoButton.isEnabled = false

        let filename = UUID().uuidString
        let ref = Storage.storage().reference(withPath: "/images/\(filename)")
        guard let imageData = selectedImage?.jpegData(compressionQuality: 0.75) else { return }

        ref.putData(imageData, metadata: nil) { (nil, err) in
            guard err == nil else { return }
            ref.downloadURL { (url, err) in
                guard err == nil else { return }
                let imageUrl = url?.absoluteString ?? ""
                if imageUrl == "" {
                    print("fuck me man")
                }

                self.saveInfoToFirestore(imageUrl: imageUrl)
            }
        }
    }
}

   private func saveInfoToFirestore(imageUrl: String){
        let uid = Auth.auth().currentUser?.uid ?? ""
        let docData: [String: Any] = ["ImageUrl1": imageUrl]
        Firestore.firestore().collection("users").document(uid).setData(docData, merge: true) { (err) in
            guard err == nil else { return }
            let customtabController = CustomTabBarController()
            customtabController.modalPresentationStyle = .fullScreen
            self.present(customtabController, animated: true)

      }
 }

Answer 1

您需要将图像调整为较小的尺寸。众所周知，ios设备捕获的照片很大，将其作为数据发送到服务器也是很大的工作量。您可以根据自己的喜好调整图像大小，而不会损失大部分图像质量。

检查此内容以调整大小。https://stackoverflow.com/a/31314494/11138557

希望这会有所帮助：谢谢：）