On Sun, 10 Apr 2011 22:29:55 +0200, Gabriel Zachmann <z...@tu-clausthal.de> said: >>> I am creating CA layers like so: >>> >>> CALayer * imgLayer = [CALayer layer]; >>> imgLayer.contents = (id) image; >>> imgLayer.contentsGravity = kCAGravityResizeAspect; >>> imgLayer.delegate = nil; >>> imgLayer.opacity = 1.0; >>> imgLayer.position = CGPointMake( drawRect_.size.width/2.0, >>> drawRect_.size.height/2.0 ); >>> imgLayer.anchorPoint = CGPointMake( 0.5, 0.5 ); >>> imgLayer.zPosition = -1.0; >>> >>> Now, sometimes, the image does not get displayed (most images do get >>> displayed).= >> >> What is "image"? > >Sorry for forgetting to tell: 'image' is a CGImageRef, which I create like so: > > CGImageRef imageRef = CGImageSourceCreateImageAtIndex( sourceRef, 0, > NULL ); > >Any ideas what might go wrong?
Well, my next guess is the frame. I don't see you setting the layer's frame anywhere, so its size is zero by zero, which means that it is effectively invisible. Show all the code by which the layer is configured and put into the interface if you want a more educated response. m. -- matt neuburg, phd = m...@tidbits.com, <http://www.apeth.net/matt/> A fool + a tool + an autorelease pool = cool! Programming iOS 4! http://www.apeth.net/matt/default.html#iosbook_______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
