Problem: Maybe the CGMutablePathRef has been created and set, but maybe not. What I do right now in -dealloc is:
I\'m trying to write a finger painting type app.I am starting a path in touchesBegan and adding to that path in touchesMoved.In touchesMoved, I use the following code:
I\'m having some performance problems with images in my app. I assign a UIImageView to the backgroundView property of a UITableViewCell. The Time Profiler instrument tells me that I\'m spending most o
I 开发者_JAVA技巧assume that the background is transparent automatically if I use the device color space (RGBA, so with alpha). But I\'m not sure.
I want to rotate an UILabel around an arbitrary point in a circular manner, not a straight line. This is my code.The final point is perfect but it goes through a straight line between the initial and
Apple开发者_开发技巧 does this for most of UIKit. You just pass in a tintColor to elements and it automatically generates a nice (in most cases anyway) gradient from it.
I 开发者_JS百科have a method that return an UIImage from a CGPDFPageRef. You can specify a width for the image.
I am displaying text using Quartz. Here is my code: CGContextRef myContext = UIGraphicsGetCurrentContext();
I recently came to following debug messag, when I diplay some PDF files. I think it occurs on some pages, when the CALayer redraws them.
I have a UIView on which i am loading my image view as a sub view. The image is showing when i doesn\'t set the anchor point but whenever i set anchor point the image is not showing .I have added the
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