//获取当前视图控制器的旋转支持方法 Method selfMtihod = class_getInstanceMethod([self class], @selector(shouldAutorotate)); //获取当前导航控制器的旋转支持方法 Method navr = class_getInstanceMethod([self.navigationController class], @selector(shouldAutorotate)); //交换方法 method_exchangeImplementations(selfMtihod, navr); //以下同理 Method selfOrientation = class_getInstanceMethod([self class], @selector(supportedInterfaceOrientations)); Method navrOrientation = class_getInstanceMethod([self.navigationController class], @selector(supportedInterfaceOrientations)); method_exchangeImplementations(selfOrientation, navrOrientation);
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