How to create Navigation using ToolBar button - ios

Question

I have created a Toolbar button and given action() to navigate to other ViewController.But the code is not working for Navigation.And not able to assign a image to the button.How can i solve this?
- (void)viewDidLoad {
[super viewDidLoad];
[self.navigationController setToolbarHidden:NO];
UIToolbar *toolbar = [[UIToolbar alloc] init];
toolbar.frame = CGRectMake(0, 418, 320, 44);
[self.view addSubview:toolbar];
[toolbar release];
UIBarButtonItem *customItem = [[UIBarButtonItem alloc] initWithTitle:#"update" style:UIBarButtonItemStyleBordered target:self action:#selector(updateAddress:)];
NSMutableArray *toolbarItems = [NSMutableArray arrayWithObjects:customItem, nil];
[toolbar setItems:toolbarItems animated:NO];
}
-(void)updateAddress{
DisplayMapViewController *updateView=[[DisplayMapViewController alloc]init];
UINavigationController *navi=[[UINavigationController alloc]initWithRootViewController:updateView];
[self.navigationController popToViewController:navi animated:YES];
}

Answer 1

First you should set the selector right, you should take out the : from the selector because you don't have parameters for the updateAddress method
should be like this
UIBarButtonItem *customItem = [[UIBarButtonItem alloc] initWithTitle:#"update" style:UIBarButtonItemStyleBordered target:self action:#selector(updateAddress)];
Then You need to initialize the DisplayMapViewController with its NibName
DisplayMapViewController *updateView=[[DisplayMapViewController alloc]initWithNibName:#"DisplayMapViewController" bundle:nil];
and then just pop to the view you are intended to.
[self.navigationController popToViewController:updateView animated:YES];
if you have already rootViewController then you could just popToRootViewController