小编Jon*_*han的帖子

目前我在导航控制器中使用QLPreviewController.(pushViewController)

要隐藏导航栏,我使用UITapGestureRecognizer.用户可以通过单次触摸(点击)显示/隐藏导航栏.这在iOS5中运行良好

- (void)viewWillAppear:(BOOL)animated {
   [super viewWillAppear:animated];

   UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)];
   [tapRecognizer setNumberOfTapsRequired:1];
   [tapRecognizer setDelegate:self];
   [[self view] addGestureRecognizer:tapRecognizer];
   [tapRecognizer release];
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}

- (void)tapped:(UIGestureRecognizer*)gestureRecognizer
{
    //hide -/- show navigation bar
    [[self navigationController] setNavigationBarHidden:![[[self navigationController] navigationBar] isHidden] animated:YES];
}

但是在发布的iOS 6版本中,水龙头现在完全被忽略了,所以我不能再隐藏我的导航栏了.

我想隐藏导航栏的原因是什么？

如果您打开.numbers文档,导航栏会隐藏导航栏下的"工作表按钮".

TY.

我必须在iPad上下载一个非常大的文件.(iOS5,iOS6)

为了防止iPad屏幕进入睡眠状态,我使用:

[UIApplication sharedApplication].idleTimerDisabled = YES;

但它不起作用.

有人能帮我吗？