dimonovdd / imagefromxamarinui Goto Github PK

I've got a Xamarin.Forms / Android app that displays graphics in an OpenGLView. I'm trying to use the NuGet "ImageFromXamarinUI" to capture an instantaneous screenshot of the graphics at a point in time, and save it to a file.

My "capture" code currently looks like:

                Stream imageStream = await myPage.myOpenGLView.CaptureImageAsync();

                string myCaptureFilename = $"MLM - {ParamsEqSetName} - {System.DateTime.Now.ToString("yyyy_MM_d_HH_mm")}";

                using (Stream stream = File.Open($"/storage/emulated/0/Pictures/{myCaptureFilename}", FileMode.Create))
                {
                    imageStream.CopyTo(stream);
                    stream.Close();
                    stream.Dispose();
                }

The file is being created successfully. But, when I try to open it as an image with the Photos app, I get a blank, black screen.

I expect to see the graphics that were being displayed at the moment that I executed the capture code. Instead, I get a blank, black screen.

Any help would be appreciated.

I tried using this with .Net Maui, but was unable to build my app after adding this package. Any plans to update for .Net Maui? Or any quick fix I can use? Thanks.

If you try to take a "ScreenShot" of a ScrollView, this cuts off with only the visible area of the ScrollView.

I would expect similar things to happen to any control which happens to go offscreen, but I went back to my implementation before I tested anymore.