UITapGestureRecognizer 无法识别水龙头

Question

我以编程方式创建了一个 viewcontroller 并在视图控制器的上半部分添加了一个子视图。但是，当我尝试向我的子视图添加点击手势时，它似乎无法识别 taps.When 我点击子视图 (menuSubView) 指针不会调用 -(void) tapGestureMethod。

下面是我的代码-

UITapGestureRecognizer *tapMenuSubView=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapGestureMethod:)];
   tapMenuSubView.numberOfTapsRequired=1;
   tapMenuSubView.numberOfTouchesRequired=1;
   tapMenuSubView.delegate=self;
   self.view.userInteractionEnabled=YES;
   self.menuSubView.userInteractionEnabled=YES;
   [self.menuSubView addGestureRecognizer:tapMenuSubView];
}
-(void)tapGestureMethod:(UITapGestureRecognizer *)gesture{
     UIView *tapView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [self.view addSubview: tapView];
}

Answer 1

从您发送的代码中很难说出什么问题。我们不知道，menuSubView 的 class 里面是什么，如何创建 menuSubView，等等

不知不觉中，我建议暂时删除 tapMenuSubView.delegate=self;。这取决于您的逻辑，但在基本情况下，您不需要委托来使手势识别器工作。

如果它没有帮助，我会更深入地研究 menuSubView 的设置，以确保没有任何东西拦截水龙头。或许，有一道无形的风景遮蔽了它。或其他可能导致问题的手势识别器。

更新

这个方法有问题

- (IBAction)menuButton:(id)sender {
    MenuViewViewController *menuViewObj=[[MenuViewViewController alloc]init];
    menuViewObj.view.frame=CGRectMake(0, 0, self.view.frame.size.width-80, self.view.frame.size.height);

    [menuViewObj.view setBackgroundColor:[UIColor whiteColor]];
    [self.view addSubview:menuViewObj.view];
}

您没有正确地将 MenuViewViewController 嵌入 ViewController。 This tutorial 应该有帮助。

- (void)displayContentController:(UIViewController *) content {
   [self addChildViewController:content];
   content.view.frame = [self frameForContentController];  // set any frame you like
   [self.view addSubview:self.currentClientView];
   [content didMoveToParentViewController:self];
}

Answer 2

尝试将此添加到您的代码中；

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

希望对您有所帮助。

Answer 3

You are adding on menuSubview. Either add it on self.view or try to get it from menuSubview.

   UITapGestureRecognizer *tapMenuSubView=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapGestureMethod:)];
   tapMenuSubView.numberOfTapsRequired=1;
   tapMenuSubView.numberOfTouchesRequired=1;
   tapMenuSubView.delegate=self;
   self.view.userInteractionEnabled=YES;
   [self.view addGestureRecognizer:tapMenuSubView];
}

-(void)tapGestureMethod:(UITapGestureRecognizer *)gesture{
    UIView *tapView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [self.view addSubview: tapView];
}

UITapGestureRecognizer 无法识别水龙头

UITapGestureRecognizer not recognizing taps

ios

subview

uitapgesturerecognizer