{

// Child proof the image by rounding the edges of the image

public static UIImage RoundCorners (UIImage image)

{

return RoundCorners(image, 4);

}

public static UIImage RoundCorners (UIImage image, int radius)

{

if (image == null)

throw new ArgumentNullException ("image");

UIImage converted = image;

image.InvokeOnMainThread(() => {

UIGraphics.BeginImageContext (image.Size);

float imgWidth = image.Size.Width;

float imgHeight = image.Size.Height;

var c = UIGraphics.GetCurrentContext ();

c.BeginPath ();

c.MoveTo (imgWidth, imgHeight/2);

c.AddArcToPoint (imgWidth, imgHeight, imgWidth/2, imgHeight, radius);

c.AddArcToPoint (0, imgHeight, 0, imgHeight/2, radius);

c.AddArcToPoint (0, 0, imgWidth/2, 0, radius);

c.AddArcToPoint (imgWidth, 0, imgWidth, imgHeight/2, radius);

c.ClosePath ();

c.Clip ();

image.Draw (new PointF (0, 0));

converted = UIGraphics.GetImageFromCurrentImageContext ();

UIGraphics.EndImageContext ();

});

return converted;

}

public static UIImage Scale(UIImage image, float maxWidthAndHeight)

{

//Perform Image manipulation, make the image fit into a 48x48 tile without clipping.

UIImage scaledImage = image;

image.InvokeOnMainThread(() => {

float fWidth = image.Size.Width;

float fHeight = image.Size.Height;

float fTotal = fWidth>=fHeight?fWidth:fHeight;

float fDifPercent = maxWidthAndHeight / fTotal;

float fNewWidth = fWidth*fDifPercent;

float fNewHeight = fHeight*fDifPercent;

SizeF newSize = new SizeF(fNewWidth,fNewHeight);

UIGraphics.BeginImageContext (newSize);

var context = UIGraphics.GetCurrentContext ();

context.TranslateCTM (0, newSize.Height);

context.ScaleCTM (1f, -1f);

context.DrawImage (new RectangleF (0, 0, newSize.Width, newSize.Height), image.CGImage);

scaledImage = UIGraphics.GetImageFromCurrentImageContext();

UIGraphics.EndImageContext();

});

return scaledImage;

}