implementation of tab bar controller - iphone

Question

this view present 5 buttons(sorry is in french)
i want to implement a tabbarcontroller when i choose one button , it will navigate to the tabbarControllerClass my problem that i don't know how to program action in every buttton to push to this view
this is an example of mesAlertbuttonpressed
-(IBAction)MesAlertsButtonPressed:(id)sender{
TabBarControllerViewController *tabBarControllerViewController = [[TabBarControllerViewController alloc]initWithNibName:#"TabBarControllerViewController" bundle:nil];
tabBarControllerViewController.TypeView=#"Alert";
[self.navigationController pushViewController:tabBarControllerViewController animated:YES];

Answer 1

Create method in AppDelegate.m class and call that method when you want to display tabController For Example:
-(void)setRootViewControllerTab1{
UIViewController *viewController1, *viewController2, *viewController3, *viewController4, *viewController5;
UINavigationController *navviewController1 , *navviewController2, *navviewController3, *navviewController4, *navviewController5;
viewController1 = [[[HomeViewController alloc] initWithNibName:#"HomeViewController" bundle:nil] autorelease];
navviewController1=[[UINavigationController alloc]initWithRootViewController:viewController1];
viewController2 = [[[HowItWorksViewController alloc] initWithNibName:#"HowItWorksViewController" bundle:nil] autorelease];
navviewController2=[[UINavigationController alloc]initWithRootViewController:viewController2];
viewController3 = [[[JoiniAppointViewController alloc] initWithNibName:#"JoiniAppointViewController" bundle:nil] autorelease];
navviewController3=[[UINavigationController alloc]initWithRootViewController:viewController3];
viewController4 = [[[BecomeBussUserViewController alloc] initWithNibName:#"BecomeBussUserViewController" bundle:nil] autorelease];
navviewController4=[[UINavigationController alloc]initWithRootViewController:viewController4];
viewController5 = [[[ContactUsViewController alloc] initWithNibName:#"ContactUsViewController" bundle:nil] autorelease];
navviewController5=[[UINavigationController alloc]initWithRootViewController:viewController5];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:navviewController1, navviewController2,navviewController3,navviewController4,navviewController5, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
}
and call that method on that button click event like bellow..
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[appDelegate setRootViewControllerTab1];

Answer 2

Use this line of code to call a method to create tab bar-
AppDelegate *appDelegateObj = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[appDelegateObj createTabBar];
Actual Method
-(void)createTabBar
{
self.tabBarController.customizableViewControllers = nil;
Home *homeObj = [[Home alloc] initWithNibName:#"Home" bundle:nil];
UINavigationController *tab1Controller = [[UINavigationController alloc] initWithRootViewController:homeObj];
ChatList *chatListObj = [[ChatList alloc] initWithNibName:#"ChatList" bundle:nil];
UINavigationController *tab2Controller = [[UINavigationController alloc] initWithRootViewController:chatListObj];
Settings *settingObj = [[Settings alloc] initWithNibName:#"Settings" bundle:nil];
UINavigationController *tab3Controller = [[UINavigationController alloc] initWithRootViewController:settingObj];
self.tabBarController.viewControllers = [NSArray arrayWithObjects: tab1Controller, tab2Controller,tab3Controller, nil];
self.tabBarController.selectedIndex=0;
self.tabBarController.delegate = self;
self.window.backgroundColor=[UIColor clearColor];
self.tabBarController.view.backgroundColor=[UIColor clearColor];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
}

Answer 3

I'm not shure if i understand you right.
Is you view already conrolled by an view controller? If not, then your action will not work.
you can try to show it modal:
-(IBAction)MesAlertsButtonPressed:(id)sender
{
TabBarControllerViewController *tabBarControllerViewController = [[TabBarControllerViewController alloc]initWithNibName:#"TabBarControllerViewController" bundle:nil];
tabBarControllerViewController.TypeView=#"Alert";
[self presentModalViewController:tabBarControllerViewController animated:YES];
}
otherwise you should read the docs about UINavigationController.