#define SafeAreaInsets \
({UIEdgeInsets edge;\
if (@available(iOS 11.0, *)) { edge = [UIApplication sharedApplication].delegate.window.safeAreaInsets; } else { edge = UIEdgeInsetsZero; }\
(edge);\
})\
#define SafeAreaInsets \
({UIEdgeInsets edge;\
if (@available(iOS 11.0, *)) { edge = [UIApplication sharedApplication].delegate.window.safeAreaInsets; } else { edge = UIEdgeInsetsZero; }\
(edge);\
})\
本文标题：SafeAreaInsets宏定义
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