In first View controller -
-(void)viewWillAppear:(BOOL)animated
{
//Add Label on UINavigationBar
[super viewWillAppear:animated];
[self.navigationController.navigationBar addSubview:navLabel];
}
-(void)viewWillDisappear:(BOOL)animated
{
// Remove label from UINavigationBar
[super viewWillDisappear:animated];
[navLabel removeFromSuperview];
}