UIDeviceOrientation * orientation = [UIDevice currentDevice] .orientation;获得“初始化中不可比的类型”错误

Question

任何人都可以告诉我为什么这行会抛出不兼容的类型错误？

UIDeviceOrientation *orientation = [UIDevice currentDevice].orientation;

Answer 1

它没有返回指针：

UIDeviceOrientation orientation = [UIDevice currentDevice].orientation;