Save an image using Maui.net graphics

Question

How do I save Maui.net graphics to png file ?

Answer 1

Hello,​

You can install Microsoft.Maui.Graphics.Skia in the nuget package manager, then use SkiaBitmapExportContext to create a bitmap in memory and draw on its Canvas

   using Microsoft.Maui.Graphics;  
   using Microsoft.Maui.Graphics.Skia;  
     
    SkiaBitmapExportContext skiaBitmapExportContext= new(width, height, displayScale);  
    ICanvas canvas = skiaBitmapExportContext.Canvas;  

After drawing, you can save image as png file with WriteToFile method, I save this image at FileSystem.Current.AppDataDirectory path.

   string mainDir = FileSystem.Current.AppDataDirectory;  
           string filePath = Path.Combine(mainDir, "MyTest.png");  
           // Save the image as a PNG file  
           skiaBitmapExportContext.WriteToFile(filePath);  

Best Regards,

Leon Lu

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Answer 2

Hi, I'm just getting a blank screen when I implement the above - but with no errors.

My project is using net7

Target is Android API 33

Maui Graphics 7.0.81

Microsoft.Maui.Graphics.Skia 7.0.81

Any ideas as to why this may not be working?

Or should I be using PlatformCanvas?

Thanks

matt

Answer 3

Is there anyone who knows how to save a graphic? I haven't been able to find a solution, and the provided answer didn't resolve the issue. Any help would be greatly appreciated.