[SOLVED] UIView with xib ignores size classes

UIView with xib ignores size classes

I'm working on custom notification view, which must show up over everything. To achive this I've implemented it as a subview of separate UIWindow and everything works fine except for layout: I use size classes, and layout just ignores it. Here is the code I use to setup my view:

NotificationView *notificationView = [[[NSBundle mainBundle] loadNibNamed:@"NotificationView"
                                                                    owner:self
                                                                  options:nil] firstObject];
UIWindow *window = [[UIWindow alloc] initWithFrame:frame];
// Additional window setup..

[window addSubview:notificationView];

Solution

UPD: I figured it out

I was adding my notificationView to UIWindow directly, in this case size classes get ignored. Then I tried to instantiate corresponding UIViewController subclass (though I don't really need it) and add it to its self.view in this case size classes work as expected.

Conclusion: View must be in UIViewController view hierarchy to support size classes.