Display default tabBarView on tabBarItem Click event - objective-c

Question

I have used UITabbarController in my app.One of the tabBarItem is contactsViewController which displays list of contacts with UITableView.When I click on the tableRow it loads another view.then I click some other tabBarItem.again I click contactsViewController it takes me to the view where i left.It does not display default contact view.I have created UITabbarController progrmattically.How do i display default tabBarView on tabBarItem click?
tabbarController = [[UITabBarController alloc]init];
self.tabbarController.delegate = self;
tabbarView = [[UIView alloc]initWithFrame:CGRectMake(0, 431, 320, 49)];
UIImageView *tabImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 49)];
[tabImage setImage:[UIImage imageNamed:#"Taskbar.png"]];
[tabbarView addSubview:tabImage];
UIButton *tabItem1 = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 64, 49)];
[tabItem1 setImage:[UIImage imageNamed:#"Btn_Home.png"] forState:UIControlStateNormal];
[tabItem1 setTag:1];
[tabItem1 addTarget:self action:#selector(tabBarBtnAction:) forControlEvents:UIControlEventTouchUpInside];
[tabbarView addSubview:tabItem1];
-(IBAction)tabBarBtnAction:(id)sender
{
UIButton *btn = (UIButton *)sender;
// NSLog(#"tag %d\n",btn.tag);
[self resetTabBarBtnImage];
[self resetAllTabBarBtnImage];
PreviousBtnTag = btn.tag;
if ([btn tag]==1) {
tabbarView.hidden = YES;
[self.tabbarController setSelectedIndex:0];
[self.navigationController popToRootViewControllerAnimated:YES];
[btn setImage:[UIImage imageNamed:#"Btn_Home-Over.png"] forState:UIControlStateNormal];
}
else if([btn tag]==2)
{
tabbarView.hidden = NO;
[self.tabbarController setSelectedIndex:1];
[btn setImage:[UIImage imageNamed:#"Btn_Contacts-Over.png"] forState:UIControlStateNormal];
[self.navigationController popToRootViewControllerAnimated:YES];
}

Answer 1

In the appDelegate class , initially set the UItabbarController delegate as self
In the implememtation of appDelegate i.e .m file
//Assuming the first tab has the contactsviewController
-
(void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController {
if (tabBarController.selectedIndex == 0) {
UINavigationController *requiredNavigationController = [tabBarController.viewControllers objectAtIndex:0];
[requiredNavigationController popToRootViewControllerAnimated:YES];
}
}

Answer 2

I would recommend you to create the "tab bar controller" with the Interface Builder, as it is much easier to implement these kind of things this way. Anyway, if you want to keep trying to create it programmatically, try changing this:
[self.navigationController popToRootViewControllerAnimated:YES];
for this:
RootViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"Root"];
[self.navigationController pushViewController:controller animated:YES];
If this does not work for you, why don't you use Tool Bar Items, in instead of a Tab Bar Controller? It is quite easy to manage events with Tool Bar items, as they are treated like buttons.
Good luck!