ImageCropper.Forms: 如何获取最终裁剪后的图片的stream & path值？

Question

我正在使用 ImageCropper.Forms 裁剪从相机和图库中选择的图像。

我的代码：

    async void OpenCamera()
    {
        try
        {
            await CrossMedia.Current.Initialize();
            //I need to open camera only here, no need of a pop up again.
            new ImageCropper()
            {
                PageTitle = "Test Title",
                AspectRatioX = 1,
                AspectRatioY = 1,
                CropShape = ImageCropper.CropShapeType.Rectangle,
                SelectSourceTitle = "Select source",
                TakePhotoTitle = "Take Photo",
                PhotoLibraryTitle = "Photo Library",
                Success = (imageFile) =>
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        profilephoto.Source = ImageSource.FromFile(imageFile);
                    });
                }
            }.Show(this);
        }
        catch (Exception ex)
        {
            System.Diagnostics.Debug.WriteLine("CameraException:>" + ex);
        }
    }

async void Opengallery()
{
    try
    {
        await CrossMedia.Current.Initialize();
        //I need to open gallery only here, no need of a pop up again.
        new ImageCropper()
        {
            PageTitle = "Test Title",
            AspectRatioX = 1,
            AspectRatioY = 1,
            CropShape = ImageCropper.CropShapeType.Rectangle,
            SelectSourceTitle = "Select source",
            TakePhotoTitle = "Take Photo",
            PhotoLibraryTitle = "Photo Library",
            Success = (imageFile) =>
            {
                Device.BeginInvokeOnMainThread(() =>
                {
                    profilephoto.Source = ImageSource.FromFile(imageFile);
                    //var stream = ImageSource.FromFile(imageFile);
                    //imagefile = imageFile;
                });
            }
        }.Show(this);
    }
}
 
//Save image to gallery
private MediaFile _mediaFile;
public async void SaveProfile(object sender, EventArgs args)
{
    var content = new MultipartFormDataContent();
    content.Add(new StreamContent(_mediaFile.GetStream()), "\"file\"", $"\"{_mediaFile.Path}\"");
    HttpClient client = new HttpClient();
    var response = client.PostAsync(new Uri("Service URL"), content).Result;
}

我需要将裁剪后的图像保存到服务器，我在最初的实现中使用了 MediaPlugin，并使用该插件将所选图像作为 MediaFile。使用 MediaFile，我可以使用如下所示的流和路径将图片保存到服务器。

但是裁剪实现后，不知道如何获取最终裁剪图片的流值和路径。因此，请为该问题提出解决方案。 SaveProfile 是 OpenCamera() 和 Opengallery() 之外的另一个函数。

Answer 1

如 docs 所示，使用 Success 处理程序

new ImageCropper()
{
    Success = (imageFile) =>
    {
        // image file is the string path, do whatever you
        // need here
        var stream = File.Open(imageFile);
    }
}.Show(this);

其中 imageFile 是包含文件路径的字符串

Answer 2

您可以使用插件 FileUploaderPlugin .

Success = (imageFile) =>
    {
       CrossFileUploader.Current.UploadFileAsync("<URL HERE>", new FilePathItem("<REQUEST FIELD NAME HERE>","<FILE PATH HERE>"), new Dictionary<string, string>()
                {
                   {"<HEADER KEY HERE>" , "<HEADER VALUE HERE>"}
                }
    );
    }

ImageCropper.Forms: 如何获取最终裁剪后的图片的stream & path值？

ImageCropper.Forms: How to get the stream & path value of the final cropped image?

path

stream

xamarin.forms