Get the index of view from which a button was clicked in a NSCollectionView

问题

I have a NSCollectionView and I am adding my custom view which acts as NSCollectionViewItem for that collection view. In my collectionViewItem, I have a NSButton along with various other elements. I have a method onButtonClick which is connected to that button. Now, suppose I add 5 items of my collectonViewItem on to the collectionView. How can I get the index of the view from where the button was clicked?

Inside onButtonClick, I tried following code but it always returns 0 regardless of which button I click:

id collectionViewItem = [sender superView];
NSInteger index = [[colloectionView subviews]  indexOfObject:collectionViewItem];

What is the right way to achieve this?

回答1:

you cant return index by clicking a control (which having its own functon).i think you have to see http://andrehoffmann.wordpress.com/2009/08/29/nscollectionview-tutorial-for-dummies-xcode-3-1-3/. before that check collectionview selection as selectable in attributes inspector.(and also try by disable the button)

来源：https://stackoverflow.com/questions/12814028/get-the-index-of-view-from-which-a-button-was-clicked-in-a-nscollectionview