iphone应用程序中web视图上的手势识别器

我已经创建了一个webview来显示pdf，现在使用单点击手势识别器，我必须调用一些方法，但单点击无法识别

我用过这个代码

UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 450,450)];
UITapGestureRecognizer *DoubleFingerDTap = [[UITapGestureRecognizer alloc]
                                           initWithTarget:self action:@selector(screenTappedtwice:)];

DoubleFingerDTap.numberOfTapsRequired = 1;
[webView addGestureRecognizer:DoubleFingerDTap];

[DoubleFingerDTap release];

方法调用

- (void)screenTappedtwice:(UIGestureRecognizer *)sender {

    CGPoint tapPoint = [sender locationInView:sender.view.superview];


      [UIView beginAnimations:nil context:NULL];

    sender.view.center = tapPoint;

//Check the current state of the navigation bar...
    //BOOL navBarState = [self.navigationController isNavigationBarHidden];
//  Set the navigationBarHidden to the opposite of the current state.
//  [self.navigationController setNavigationBarHidden:TRUE animated:YES];


    [self.navigationController setNavigationBarHidden:YES animated:YES];

    [UIView commitAnimations];


}

---

您是否尝试设置：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer;

要返回

是

？此外，确保将轻触手势的委托设置为self，以便正确接收消息。我刚刚在一个新项目中测试了它，它确实有效。

编辑

不太确定动画开始和提交的目的是什么-方法

setNavigationBarHidden:animated:

会自动设置动画。此外，在iOS 4以后的版本中，不鼓励使用这些动画定义-请改为在

UIView

上使用基于块的动画

对于您的导航控制器，您几乎就在那里-实现如下内容：

- (void)screenTappedTwice:(UITapGestureRecognizer *)sender
{
    BOOL shouldHideNavBar = [self.navigationController isNavigationBarHidden] ? NO : YES;
    [self.navigationController setNavigationBarHidden:shouldHideNavBar animated:YES];
}

---

与此问题类似：我无法从您的上述链接获得所需的ans，，感谢您的ans，，我已在UITapGestureRecognitor操作中调用Screen TappedWice:method来隐藏导航栏，但它不起作用。您能帮我吗？有关mehod定义Screen TappedWice，请参阅我编辑的问题