iOS-工具栏未显示在顶部

我也在这里问过这个问题，但是我没有得到任何解决方案。

我从这里下载了EPub Reader库。当我运行此库时，首先出现一个表格视图，该表格视图包含四行，各行的值分别为EPUB，PDF等，并在单击“ EPUB”行书后，顶部工具栏成功显示。因为我必须在开始时首先加载书，而不是显示工具栏，所以我对代码进行了一些更改。从didSelectRowAtIndexPath复制了一些代码，并将该代码添加到了proxy.m中。所以现在的问题是书已成功加载，但工具栏未显示

这是我的代码

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
    NSArray *languages = [userDefaults objectForKey:@"AppleLanguages"];

    EPubViewController *epubView = [[EPubViewController alloc] init];
    [epubView loadEpub:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"AtoZbook" ofType:@"epub"]]];
    self.navigationController = [[UINavigationController alloc]initWithRootViewController:epubView];
  
    self.window.rootViewController = self.navigationController;
    [self.window makeKeyAndVisible];
    return YES;
}

加载epubView的代码在原始库的RootViewController.m中

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    
    switch (indexPath.row) {
        //TXT
        case 0:{
           //txt
            
        }
            break;
        //PDF
        case 1:{
             //PDF
        }
            break;
        //EPUB
        case 2:{
            epubView = [[EPubViewController alloc] init];
            [epubView loadEpub:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"The Chessmen of Mars" ofType:@"epub"]]];
            epubView.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
            [self presentModalViewController:epubView animated:YES];
            [epubView release];
        }
            break;
        case 3:{
           //another book
        }
            break;
            
        default:
            break;
    }
   
    
}

这是我的EpubViewController的didLoadMethod视图

- (void)viewDidLoad {
    [super viewDidLoad];

    


    loadingIndicator = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
    loadingIndicator.center = CGPointMake(toolbar.frame.size.width/2 ,toolbar.frame.size.height/2);
    [loadingIndicator startAnimating];
    toolbar.alpha = 0.8;
    [self.toolbar addSubview:loadingIndicator];


    [webView setDelegate:self];

    UIScrollView* sv = nil;
    for (UIView* v in  webView.subviews) {
        if([v isKindOfClass:[UIScrollView class]]){
            sv = (UIScrollView*) v;
            sv.scrollEnabled = NO;
            sv.bounces = NO;
        }
    }
    currentTextSize = 100;

    //Webview
    UISwipeGestureRecognizer* rightSwipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(gotoNextPage)] ;
    [rightSwipeRecognizer setDirection:UISwipeGestureRecognizerDirectionLeft];

    UISwipeGestureRecognizer* leftSwipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(gotoPrevPage)] ;
    [leftSwipeRecognizer setDirection:UISwipeGestureRecognizerDirectionRight];


    [webView addGestureRecognizer:rightSwipeRecognizer];
    [webView addGestureRecognizer:leftSwipeRecognizer];

    [self performSelector:@selector(stratRolling)];
}

这是图像

我想再说一遍，Case 2如果我必须先显示表格视图，则通过单击该行来显示epubViewController时，工具栏可以正常工作。