How to add button to navigation controller - objective-c

Question

Here is my code..I am unable to add a button in my navigation controller.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1, *viewController2, *viewController3,*viewController4;
viewController1 = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
viewController2 = [[DisplayAllImagesController alloc] initWithNibName:#"DisplayAllImagesController" bundle:nil];
viewController3 = [[EmptyView alloc] initWithNibName:#"EmptyView" bundle:nil];
viewController4 = [[ListView alloc] initWithNibName:#"ListView" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController2, viewController1, viewController3, viewController4, nil];
self.tabBarController.title = #"Title";
self.navController = [[UINavigationController alloc]
initWithRootViewController:self.tabBarController];
self.window.rootViewController = self.navController;
[self.window makeKeyAndVisible];
return YES;
}
So,please let me know how i can add button to navigation controller...please...

Answer 1

just add this bellow code in your ViewController's viewDidLoad: method...
UIBarButtonItem *btnReload = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:#selector(btnReloadPressed:)];
self.navigationController.topViewController.navigationItem.rightBarButtonItem = btnReload;
btnReload.enabled=TRUE;
btnReload.style=UIBarButtonSystemItemRefresh;

Answer 2

Try this:
UIButton *customButton = [UIButton alloc] initWithFrame:CGRectMake(0, 0, 50,30)];
UIBarButtonItem *closeButton = [[UIBarButtonItem alloc] initWithCustomView:customButton];
self.navigationItem.rightBarButtonItem = closeButton;

Answer 3

if you want custom button we can use this
UIButton *myButton1 = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton1 setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
myButton1.showsTouchWhenHighlighted = YES;
myButton1.frame = CGRectMake(0.0, 3.0, 50,30);
[myButton1 addTarget:self action:#selector(back) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithCustomView:myButton1];
self.navigationItem. rightBarButtonItem = rightButton;

Answer 4

//create the button and assign the image
UIImage *buttonImage = [UIImage imageNamed:#"button.png"];
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeCustom];
[rightButton setFrame:CGRectMake(280,7,buttonImage.size.width,buttonImage.size.height)];
[rightButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
rightButton.titleLabel.font = [UIFont boldSystemFontOfSize:12];
[rightButton setTitle:#"Right" forState:UIControlStateNormal];
// add image view
[self.navigationController.navigationBar addSubview:rightButton];
[self.navigationController.navigationBar bringSubviewToFront:rightButton];
//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarDone = [[UIBarButtonItem alloc] initWithCustomView:rightButton];
self.navigationItem.rightBarButtonItem = customBarDone;
[rightButton addTarget:self action:#selector(yourSelector:) forControlEvents:UIControlEventTouchUpInside];

Answer 5

UIButton* btn =[UIButton alloc] init];
....
self.navController.view addsubview:btn];