Iphone IOS将右键添加到导航栏不工作

它适用于没有选项卡栏但没有选项卡栏的ViewController。 此外，这是故事板中的第一个视图控制器

UIImage *bookmarkImage = [UIImage imageNamed:@"bookmark"];

//create the button and assign the image
UIButton *bookmarkButton = [UIButton buttonWithType:UIButtonTypeCustom];

 //set the frame of the button to the size of the image (see note below)
bookmarkButton.frame = CGRectMake(100, 0, bookmarkImage.size.width,      bookmarkImage.size.height);
        [bookmarkButton setImage:bookmarkImage forState:UIControlStateNormal];

bookmarkButton addTarget:self action:@selector(addFavorite:) forControlEvents:UIControlEventTouchUpInside];
bookmarkButton.imageView.contentMode=UIViewContentModeScaleAspectFit;

//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarItem2 = [[UIBarButtonItem alloc] initWithCustomView:bookmarkButton];
self.navigationItem.rightBarButtonItem = customBarItem2;

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我在理解您的问题时遇到了一些问题，但据我所知，您试图添加按钮的类似乎不在

UINavigationController

中

我不确定如何实例化这个类（ClassX），但应该像这样做：

ClassX *temp = [[ClassX alloc] init....];

UINavigationController *control = [[UINavigationController alloc] initWithRootViewController:temp];

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然后显示控件视图

第一印象，我认为问题是由

UIButton*bookmarkButton=[UIButton buttonwhithtype:UIButtonTypeCustom]引起的，但我不是很确定。
如果需要，可以这样修改。它确实有效

- (void)viewDidLoad
{
    [super viewDidLoad];
    navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
    UINavigationItem *navigationItem = [[[UINavigationItem alloc] initWithTitle:@"My NavigationBar"] autorelease];

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(100, 0, 70, 30)];

    [button setImage:[UIImage imageNamed:@"bookmark.png"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(buttonClicked)
     forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc]
                                   initWithCustomView:button];

    navigationItem.rightBarButtonItem = buttonItem;
    [navigationBar pushNavigationItem:navigationItem animated:NO];
    [self.view addSubview:navigationBar];

    [buttonItem release];
    [button release];
}

我想这个链接很有帮助：）