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In xcode when I turn on the decimal pad keyboard option in the .xib for my textfield, and I run the application, I receive this error: 

Jun 13 01:22:38 Nicholas-Gibsons-iPhone Quick Utilities[1009] <Error>: 
CGContextSetFillColorWithColor: 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.

If you have any idea what this really means, you would be a lot of help! Thanks so much!

Nicholas Gibson
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    Are you running ios7 beta? I get the same error when I show a UIActionSheet in the ios7 beta; works fine in ios6.1 though. – aranasaurus Jul 16 '13 at 01:24
  • Yes! I have been to the developer forums, and Apple has now fixed the bug! I am sorry that I posted this here, I was not aware at the time. – Nicholas Gibson Jul 16 '13 at 01:26
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    NicholasGibson - If you think the solution will be useful to others, have @Zemm post it as an "answer", so it is more visible. If not, you can delete the thread. – Leigh Sep 17 '13 at 22:16
  • This issue still there in UIwebView, When i tap on webview which has editable div keyboard open, and then double tap on webview get bunch of errors like this, CGContextSetFillColorWithColor CGContextSetBlendMode: invalid context 0x0 CGContextFillRects: invalid context 0x0 CGContextSetBlendMode: invalid context 0x0 – iBhavik Oct 23 '13 at 09:55

2 Answers2

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try the following :

textField.keyboardType = UIKeyboardTypeDecimalPad;
Tarek Hallak
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0

Check to see if you are using context anywhere - if so rename it anywhere it occurs.

bummi
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Carter
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