Question

I know that viewWillAppear is not called on pop/push views, but I really need that method. Here is what I try

I added UINavigationControllerDelegate and adopt

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
       [viewController viewWillAppear:animated];
}

-(void)viewWillAppear
{
    NSLog(@"Log");
}

but viewWillAppear is still not invoked

EDIT

AppDelegate.m

    self.navigationController = [[UINavigationController alloc]init];
    [self.window setRootViewController:self.navigationController];

    FirstView *fview = [FirstView]alloc]init];
    [self.viewController pushViewController:fview animated:YES];

FirstView.m
....
-(void)viewWillAppear
{
  NSLog(@"Logged");
}

….

Answer 1

The clue is here:

  [viewController viewWillAppear:animated];
} 

-(void)viewWillAppear 

You call a method that takes one parameter. But your method doesn’t have one. In Objective C terms that’s a completely different method.

It should look like this:

-(void)viewWillAppear:(BOOL)animated {
  // blah
}