UIEdgeInsets ignored on CGContextDrawImage within a UIGraphicsBeginImageContextWithOptions

Question

I am struggling getting Image Insets to work when drawing to an off screen buffer.

Using the resizableImageWithCapInsets: on an UIImage directly setImage: into a but

Answer 1

I would guess that stretchable UIImages are handled at a higher level than Quartz2D and so using CGContextDrawImage is not going to work.

You could try using -[UIImage drawInRect] instead. This will draw to the current UIGraphics context, which is your bitmap context that you create in your code snippet.

The relevant line is:

[base drawInRect:CGRectMake(0,0,self.bounds.size.width,
                                    self.bounds.size.height)];