How can I apply image filtering in Xamarin.Forms?

How can I apply image filtering in Xamarin.Forms?

You can use the SkiaSharp library to apply various image filters in Xamarin.Forms. Would you like a code example?

Yes, please provide a code example for applying a grayscale filter.

Here's a simple example:

using SkiaSharp;

public SKBitmap ApplyGrayscale(SKBitmap original)
{
    var width = original.Width;
    var height = original.Height;
    var grayscale = new SKBitmap(width, height);

    using (var canvas = new SKCanvas(grayscale))
    {
        var paint = new SKPaint();
        paint.ColorFilter = SKColorFilter.CreateColorMatrix(new float[]
        {
            0.33f, 0.33f, 0.33f, 0, 0,
            0.33f, 0.33f, 0.33f, 0, 0,
            0.33f, 0.33f, 0.33f, 0, 0,
            0, 0, 0, 1, 0
        });
        canvas.DrawBitmap(original, 0, 0, paint);
    }
    return grayscale;
}

This function takes an original bitmap and returns a grayscale version.

That looks great! Can I apply multiple filters at once?

Yes, you can chain multiple filters by applying them sequentially. Just create a new SKBitmap for each filter and pass the result to the next filter.