In my main UIViewController I am adding a homescreen view controller as subviews:
UINavigationController *controller = [[UINavigationController alloc] initWithRootViewController:vc];
controller.navigationBarHidden = YES;
controller.view.frame = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);
[self addChildViewController:controller];
[self.view insertSubview:controller.view atIndex:0];
[controller didMoveToParentViewController:self];
The issue is that viewDidAppear and viewWillAppear is only called once, just like viewDidLoad. Why is this? How do I make this work?
Basically inside vc I am not getting viewDidAppear nor viewWillAppear.
I also just tried adding the UIViewController without the navigation controller and it still doesn't work:
vc.view.frame = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);
[self addChildViewController:vc];
[self.view insertSubview:vc.view atIndex:0];
[vc didMoveToParentViewController:self];
Presenting view controllers using presentModalViewController or segues or pushViewController should fix it.
Alternatively, if for some reason you want to present your views without the built-in methods, in your own code you should be calling these methods manually. Something like this:
[self addChildViewController:controller];
BOOL animated = NO;
[controller viewWillAppear:animated];
[self.view insertSubview:controller.view atIndex:0];
[controller viewDidAppear:animated];
[controller didMoveToParentViewController:self];