Objective c 伊巴布托主义消失

我有以下功能，显示我的应用程序上的顶部栏。它由一个图像和一个UIBarButton组成。我从视图中调用它。当我按下当前控制器并移到下一个控制器，然后移回主控制器时，右栏按钮消失。请帮忙

-(void)setTopBar
{
    self.navigationController.navigationBar.tintColor =  [UIColor colorWithRed:0.6367 green:0.6367 blue:0.6367 alpha:1.0];
    UIImage *titleImage = [UIImage imageNamed: MAIN_TOPBAR];
    if([self.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)] ) {
        //iOS 5 new UINavigationBar custom background
        [self.navigationController.navigationBar setBackgroundImage:titleImage forBarMetrics: UIBarMetricsDefault];
   //     NSLog(@"loading nav items");
        UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"More Apps" style:UIBarButtonItemStylePlain target:self action:@selector(loadFAADAds)];
        rightButton.tag = 11111;
        self.navigationItem.rightBarButtonItem = rightButton;
        [rightButton release];

    } 
    else
    {
        CGRect titleFrame = self.navigationController.navigationBar.frame;
        UIImageView *titleImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, titleFrame.size.width,titleFrame.size.height)];
        [titleImageView setImage:titleImage];
        [titleImageView setTag:TOPBAR_TAG];

       // [self.navigationController.navigationBar sendSubviewToBack:titleImageView];
       // self.navigationItem.titleView = titleImageView;
        UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"More Apps" style:UIBarButtonItemStylePlain target:self action:@selector(loadFAADAds)];

        self.navigationItem.rightBarButtonItem = rightButton;

        //self.navigationController.navigationItem.rightBarButtonItem = rightButton;
        [self.navigationController.navigationBar insertSubview:titleImageView atIndex:0];
        [self.navigationController.navigationBar sendSubviewToBack:self.navigationController.navigationBar];
        [rightButton release];
    }
    [titleImage release];

}

---

你留着吗？你为什么要在方法中发布它？从ViewDiUnloadUtiBarButtonItem*rightButton=[[UIBarButtonItem alloc]initWithTitle:@“更多应用程序”样式：UIBarButtonItemStylePlain目标：自我操作：@selector（loadFAADAds）]；您不能释放

标题图像

，因为

图像名：

不会将所有权转移给您。但您必须释放

标题图像视图

。请重新阅读。此声明位于函数中，具有本地作用域。我无法在ViewDidUnLoad中释放它。但是，对于另一个控制器，我在ViewWillEnglish中执行以下操作：-（void）ViewWillEnglish:（BOOL）动画{//NSLog（@“disaper”）；if（[self.navigationController.navigationBar respondsToSelector:@selector（setBackgroundImage:forBarMetrics:））{}else{[[self.navigationController.navigationBar viewWithTag:TOPBAR_TAG]removeFromSuperview]；self.navigationController.navigationBar.tintColor=nil；}[super ViewWillEnglish:NO]；}我找到了与我所问问题相同的以下答案。我只想知道问题是您将按钮添加到了错误的位置。您不应该将按钮添加到导航控制器的导航项中，而是添加到导航控制器当前显示的控制器的导航项中

-(void)setTopBar
{
    self.navigationController.navigationBar.tintColor =  [UIColor colorWithRed:0.6367 green:0.6367 blue:0.6367 alpha:1.0];
    UIImage *titleImage = [UIImage imageNamed: MAIN_TOPBAR];
    if([self.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)] ) {
        //iOS 5 new UINavigationBar custom background
        [self.navigationController.navigationBar setBackgroundImage:titleImage forBarMetrics: UIBarMetricsDefault];
   //     NSLog(@"loading nav items");
        UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"More Apps" style:UIBarButtonItemStylePlain target:self action:@selector(loadFAADAds)];
        rightButton.tag = 11111;
        self.navigationItem.rightBarButtonItem = rightButton;
       // [rightButton release];

    } 
    else
    {
        CGRect titleFrame = self.navigationController.navigationBar.frame;
        UIImageView *titleImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, titleFrame.size.width,titleFrame.size.height)];
        [titleImageView setImage:titleImage];
        [titleImageView setTag:TOPBAR_TAG];

       // [self.navigationController.navigationBar sendSubviewToBack:titleImageView];
       // self.navigationItem.titleView = titleImageView;
        UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"More Apps" style:UIBarButtonItemStylePlain target:self action:@selector(loadFAADAds)];

        self.navigationItem.rightBarButtonItem = rightButton;

        //self.navigationController.navigationItem.rightBarButtonItem = rightButton;
        [self.navigationController.navigationBar insertSubview:titleImageView atIndex:0];
        [self.navigationController.navigationBar sendSubviewToBack:self.navigationController.navigationBar];
        //[rightButton release];
    }
//    [titleImage release];

}