<Error>: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_C
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错误问题:
<Error>: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
解决方法:
设置app的状态栏样式的使用使用了旧的方式,在info.plist里面设置了View controller-based status bar appearance为NO,默认为YES,一般式iOS6的时候使用这种方式,iOS7,8也兼容,但是到了iOS9就报了警告。
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