Question

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

2. 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?

Code:

@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;
}

Answer 1

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;
}