这是模糊的图像和代码,希望有人有一些想法:)

UIGraphics.BeginImageContext (new SizeF(150,150));
var context = UIGraphics.GetCurrentContext ();

var content = "CIRCLE";
var font = UIFont.SystemFontOfSize (16);

const float width = 150;
const float height = 150;

context.SetFillColorWithColor (UIColor.Red.CGColor);
context.FillEllipseInRect (new RectangleF (0,width,height));

var contentString = new NSString (content);
var contentSize = contentString.StringSize (font);

var rect = new RectangleF (0,((height - contentSize.Height) / 2) + 0,contentSize.Height);

context.SetFillColorWithColor (UIColor.White.CGColor);
new NSString (content).DrawString (rect,font,UILineBreakMode.WordWrap,UITextAlignment.Center);

var image = UIGraphics.GetImageFromCurrentImageContext ();
imageView.Image = image;