iOS将tapGesture添加到多个视图 [英] iOS adding tapGesture to multiple Views

问题描述

我在主视图中定义了多个视图。我想为所有这些视图添加单击手势。下面是我编写的代码，但这会将轻击手势注册到我添加的最后一个视图。因此，在下面的代码中，点击仅针对 messagesView &不适用于其他观点。我有两个问题：

I have multiple views defined in my main view. I want to add single tap gesture to all these views. Below is the code I have written, but this registers a tap gesture to the last view that I add. So in the code below, tap is registered only for messagesView & not for other views. I have 2 questions:

1. 如何在多个视图中注册相同的tapGesture？

1. How do I register the same tapGesture to multiple Views?

让我们假设我的工作正常，现在这些视图中的所有单击都会转到名为 oneTap 的相同函数。在此功能中，我如何区分水龙头来自哪个视图？

Lets assume I get this working, now all single taps from these views goto the same function called oneTap. In this function how do I distinguish from which view the tap is coming?

代码：

@synthesize feedsView, peopleView, messagesView, photosView;

- (void)viewDidLoad
{
    [super viewDidLoad];

    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(oneTap:)];
    [singleTap setNumberOfTapsRequired:1];
    [singleTap setNumberOfTouchesRequired:1];
    [feedsView addGestureRecognizer:singleTap];
    [peopleView addGestureRecognizer:singleTap];
    [messagesView addGestureRecognizer:singleTap];
    //[photosView addGestureRecognizer:singleTap];
    [singleTap release];

    return;
}

推荐答案

我遇到了同样的问题它只添加到最后一个视图。可能有更好的解决方案，但我只为每个视图创建了一个标记手势，并将它们链接到相同的选择器方法（在您的情况下为 oneTap：）。为了区分哪个视图激活了该方法，您只需标记您的视图， feedsView.tag = 0; peopleView.tag = 1; 等等。然后当调用该方法时：

I had the same problem where it only added to the last view. There might be a better solution, but I just created a tag gesture for each view and linked them to the same selector method (oneTap: in your case). In order to distinguish which view activated the method, you can just tag your views, feedsView.tag = 0; peopleView.tag = 1; and so on. Then when the method is called:

- (void)oneTap:(UIGestureRecognizer *)gesture {
    int myViewTag = gesture.view.tag;  // now you know which view called
    // use myViewTag to specify individual actions;
}

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