Question

我可以成功地拍摄或挑选照片并将其上传到Firebase Storage，但是我不确定如何将该图片设置为UIImage，请参见代码：

需要将照片设置为的UIImage

@IBOutlet weak var myPhoto: UIImageView!

如何选择或拍照：

imagePicker.allowsEditing = true

    let alertController = UIAlertController(title: "Add a Photo", message: "Choose From", preferredStyle: .actionSheet)

    let cameraAction = UIAlertAction(title: "Camera", style: .default) { (action) in
        self.imagePicker.sourceType = .camera
        self.imagePicked = sender.tag // new
        self.present(self.imagePicker, animated: true, completion: nil)

    }

    let photosLibraryAction = UIAlertAction(title: "Photos Library", style: .default) { (action) in
        self.imagePicker.sourceType = .photoLibrary
        self.imagePicked = sender.tag // new
        self.present(self.imagePicker, animated: true, completion: nil)

    }

    let savedPhotosAction = UIAlertAction(title: "Saved Photos Album", style: .default) { (action) in
        self.imagePicker.sourceType = .savedPhotosAlbum
        self.imagePicked = sender.tag // new
        self.present(self.imagePicker, animated: true, completion: nil)

    }

    let cancelAction = UIAlertAction(title: "Cancel", style: .destructive, handler: nil)

    alertController.addAction(cameraAction)
    alertController.addAction(photosLibraryAction)
    alertController.addAction(savedPhotosAction)
    alertController.addAction(cancelAction)

    present(alertController, animated: true, completion: nil)

如何将刚刚选择或拍摄的照片设置到我的照片中？

Answer 1

您可以从中选择或捕获图像 UIImagePickerControllerDelegate函数。您必须设置您的UIImagePickerController（picker）实例的委托。

寻求许可

该应用必须先获得用户的许可，然后才能访问相机/已保存的照片。应用应向用户显示一条消息解释为什么需要相机或照片库访问权限。您可以通过设置NSCameraUsageDescription设置此消息，然后应用程序的Info.plist文件中的NSPhotoLibraryUsageDescription键。

这肯定会起作用

imagePicker.delegate = self


extension StackOverflowViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    func imagePickerController( picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

        var selectedImage: UIImage?
        if let editedImage = info[.editedImage] as? UIImage {
            selectedImage = editedImage
            self.imgView.image = selectedImage!
        } else if let originalImage = info[.originalImage] as? UIImage {
            selectedImage = originalImage
            self.imgView.image = selectedImage!
            picker.dismiss(animated: true, completion: nil)
        }
    }

    func imagePickerControllerDidCancel( picker: UIImagePickerController) {
        picker.dismiss(animated: true) {
            // Further logic to perform 
        }
    }
}

您可以从此处查看与UIImagePickerController相关的所有其他内容官方参考链接。

https://developer.apple.com/documentation/uikit/uiimagepickercontroller/infokey/1619164-originalimage

如何将拍摄/拾取的图像设置为uiimage？

1 个答案: