viewWillAppear not called in BCTabBarController - objective-c

Question

I've large project where customer want's to customize tabbar. I've choose BCTabBarController to replace UITabbarController. After few fixes it works fine but after testing I found one bug:
ViewWillAppear, ViewDidAppear, ViewWillDisappear ViewDidDisappear methods not called in selectded view controller and not called into BCTabBarController.
This problem appears after BCTabBarController show modal controller from instance of BCTabBarController class.
I've posted issue to github repo of briancolins, but still have no answer.
Here some code where I calling present modal view controller:
- (void) presentProperlyModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated
{
if ([[self controllerToPresentModalFrom] respondsToSelector:#selector(presentViewController:animated:completion:)]) // For iOS 5
{
[[self controllerToPresentModalFrom] presentViewController:modalViewController animated:animated completion:^(){}];
}
else
{
[[self controllerToPresentModalFrom] presentModalViewController:modalViewController animated:animated];
}
}
-(void) dismissProperlyModalViewControllerAnimated:(BOOL)animated
{
if ([self respondsToSelector:#selector(dismissViewControllerAnimated:completion:)]) {
[self dismissViewControllerAnimated:animated completion:^(){}];
}
else
{
[self dismissModalViewControllerAnimated:YES];
}
}
UPDATE: this issue not reproduced in iOS5 but present at iOS 4.3

Answer 1

As you indicated. iOS 5 forwards the messages, where previous versions do not. Here's how I handle a similar situation:
- (BOOL)needsMessageForwarding:(UIViewController *)vc {
if ( [vc isKindOfClass:[UINavigationController class]] == NO)
return YES;
NSString *ver = [UIDevice currentDevice].systemVersion;
if ( [ver characterAtIndex:0 < '5'] )
return YES;
return NO;
}
- (void) viewWillAppear:(BOOL)animated {
...
if ( [self needsMessageForwarding:modalViewController] )
[modalViewController viewWillAppear:animated];
...
}
// repeat pattern in the other viewWill... viewDid... functions.
In my situation I have a list of view controllers that could be visible, so I manage which view controller is visible and forward the message to it.