CODEWITHSUNDEEP
uiimageios7core-graphics
alvaromb
alvaromb

Reputation: 4856

UIImage's resizableImageWithCapInsets brings multiple CoreGraphics "invalid context 0x0" errors under iOS 7

I've just noticed this issue with resizableImageWithCapInsets under iOS 7. Suddenly, I'm getting this error logs, but my app isn't crashing:

Oct 28 14:35:15 <Error>: CGContextSaveGState: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextSetBlendMode: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextSetAlpha: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextTranslateCTM: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextScaleCTM: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextGetCTM: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextSaveGState: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextClipToRect: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextDrawTiledImage: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Oct 28 14:35:15 <Error>: CGContextRestoreGState: invalid context 0x0. This is a serious error. This application, or a library it uses, is using an invalid context  and is thereby contributing to an overall degradation of system stability and reliability. This notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.

And this is the code that's producing the error:

[_registerButton setBackgroundImage:[[UIImage imageNamed:@"image.png"] resizableImageWithCapInsets:(UIEdgeInsets){15, 15, 15, 15}]forState:UIControlStateNormal];

If I comment the line above, the error disappears. Has someone else experienced this error?

Upvotes: 2

Views: 1034

Answers (1)

alvaromb
alvaromb

Reputation: 4856

Found the issue. The "image.png" file was 30 pixels tall, so with top and bottom edgeInsets at 15, there was no empty space vertically speaking. It was working visually, but I was recieving those errors. I hope this will be useful for others.

Upvotes: 11

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