Hi all,
I encounter a strage console error log when I ran my app on an iPod Touch which has the updated iOS4 version but since it is an old device it doesn't support multitasking.
Sometimes I see these four lines in the console:
Thu Jul 1 15:39:38 iPod-Dev TestApp[1147] : CGContextConcatCTM: invalid context 0x0
Thu Jul 1 15:39:38 iPod-Dev TestApp[1147] : CGContextResetCTM: invalid context 0x0
Thu Jul 1 15:39:38 iPod-Dev TestApp[1147] : CGContextConcatCTM: invalid context 0x0
Thu Jul 1 15:39:38 iPod-Dev TestApp[1147] : CGBitmapContextGetData: invalid context 0x0
This happens when I am showing a user a UIScrollView with UITextFields on top of it, and when the user taps one of those UITextFields I scroll it to a correct place so that the keyboard won't hide that text field. The thing is it doesn't happen every time I show that screen and also it doesn't happen on my iOS4 simulator.
Is anyone familier with these error lines?