iOS：如何通过NSNotification发送UIInterfaceOrientation对象

Question

我想在NSNotification的userinfo字典中传递UIInterfaceOrientation对象。我怎样才能做到这一点？

Answer 1

将其包裹在NSNumber中：

id orientationObject = [NSNumber numberWithInteger:UIInterfaceOrientationPortrait];
[userinfo setObject:orientationObject forKey:@"orientation"];

// pass around ...

UIInterfaceOrientation orientation = (UIInterfaceOrientation)[[userinfo objectForKey:@"orientation"] integerValue];