这是我的代码..我无法在导航控制器中添加按钮。
- (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;
}
所以,请告诉我如何向导航控制器添加按钮......请...
答案 0 :(得分:7)
只需在ViewController
的{{1}}方法中添加此下方代码...
viewDidLoad:
答案 1 :(得分:3)
试试这个:
UIButton *customButton = [UIButton alloc] initWithFrame:CGRectMake(0, 0, 50,30)];
UIBarButtonItem *closeButton = [[UIBarButtonItem alloc] initWithCustomView:customButton];
self.navigationItem.rightBarButtonItem = closeButton;
答案 2 :(得分:2)
如果你想要自定义按钮我们可以使用这个
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;
答案 3 :(得分:1)
//创建按钮并分配图像 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];
答案 4 :(得分:0)
UIButton * btn = [UIButton alloc] init]; .... self.navController.view addsubview:btn];