Question

I have a view (called outPutView) that contains graphics, like uIImageViews and labels. I need to render an image of the outPutView and it’s sub-views. I am using renderInContext:UIGraphicsGetCurrentContext() to do so. Works fine, except that I need to scale the views. I am using a transform on the outPutView. This successfully scales the view and it’s sub-views, but the transform does not render. While the views are scaled onscreen. the final render displays the vies at their original size, while the render context is at the target size (here @2x iPhone view size).

Thanks for reading!!

[outPutView setTransform:CGAffineTransformMake(2, 0, 0, 2, 0, 0)];
CGSize renderSize = CGSizeMake(self.view.bounds.size.width*2, self.view.bounds.size.height*2);
UIGraphicsBeginImageContext(renderSize);
[[outPutView layer] renderInContext:UIGraphicsGetCurrentContext()];
renderedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

Answer 1

I solved this by re-ordering my views. Actually adding another view between the output view: the view that the rendered context is taken from, and the view that is scaled via transform. It worked, but I have no idea why at this point. Any thoughts on this would be appreciated. Thanks for reading.