ios错误: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set

坑爹的IOS9来了,新功能没见咋地,带来一大堆麻烦!

下面就是常见错误之一

: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.

Sep 21 16:35:09  

: CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.

Sep 21 16:35:09  

: CGContextRestoreGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.


解决这个错误的操作就是进入info.plist文件,删除key UIViewControllerBasedStatusBarAppearance,如下图:



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