Most efficent way to create a CALayer with an image in it?

iphone uiimage calayer cgimage
Michael Gaylord picture Michael Gaylord · Jun 14, 2009 · Viewed 9.1k times · Source

I am wondering what the most efficient way is to make a CALayer with an image in it.

I know you can load a UIImage and then call [image CGImage] but is this the best way of going about it? As far as I can tell from Apple's documentation this is the only way you can do it.

Answer

nielsbot picture nielsbot · May 10, 2011

Try this:

layer.contents = (__bridge id)[ uiimage CGImage ] ;

HTH

Related questions

Can I load a UIImage from a URL?

I have a URL for an image (got it from UIImagePickerController) but I no longer have the image in memory (the URL was saved from a previous run of the app). Can I reload the UIImage from the URL again? …

Read More
How to save picture to iPhone photo library?

What do I need to do to save an image my program has generated (possibly from the camera, possibly not) to the system photo library on the iPhone?

Read More
iOS UIImagePickerController result image orientation after upload

I am testing my iPhone application on an iOS 3.1.3 iPhone. I am selecting/capturing an image using a UIImagePickerController: UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init]; [imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera]; [imagePicker setDelegate:self]; [self.navigationController presentModalViewController:imagePicker animated:YES]; [imagePicker release]; - (void)…

Read More