Recorrer subviews
NSArray *subviews = view.subviews;
for (UIView *aView in subviews) {
if view.isMember(of:UITabBarItem.self) {
}
}
NSArray *subviews = view.subviews;
for (UIView *aView in subviews) {
if ([aView isKindOfClass:self]) {
[huds addObject:aView];
}
}