iphone - 导航栏没有出现在我的 ViewController 上

Question

我有一个以模态方式呈现的 UIViewController。 UIViewController 位于 UINavigationController 内部。

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];

    saveButton = [[UIBarButtonItem alloc] initWithTitle:@"Save" 
                                                  style:UIBarButtonItemStyleBordered 
                                                  target:self 
                                                  action:@selector(saveButtonClicked:)]; 


    self.navigationItem.rightBarButtonItem = saveButton;
    self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:(102.0/255.0) green:(20.0/255.0) blue:(11.0/255.0) alpha:1];
    self.title = @"Login";
    //toolbar.tintColor = [UIColor colorWithRed:(102.0/255.0) green:(20.0/255.0) blue:(11.0/255.0) alpha:1];
}

为什么我的导航栏没有显示文本登录和右侧的保存按钮？

Answer 1

听起来您可能正在呈现 View Controller 而不是导航 Controller 。用于呈现您所描述的 View Controller 的代码应如下所示:

MyViewController *viewController = [[MyViewController alloc] init];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:viewController];
[self presentModalViewController:navController animated:YES];
[viewController release];
[navController release];