UIScrollView onDragFinished not working

[Eze]

Hi,

I'm trying to recieve an event from scroll view when it stops moving to get centeredObject from UICenterOnChild but onDragFinished is not getting called.

1.         void OnEnable() {
2.                 scrollView.onDragFinished += whichPageIsActive;
3.         }
4.  
5.         public void whichPageIsActive() {
6.                 if (currentPage.centeredObject == page1) {
7.                         Debug.Log("Page 1");
8.                 } else if (currentPage.centeredObject == page2) {
9.                         Debug.Log("Page 2");
10.                 }
11.         }
12.  

When I replace onDragFinished with onDragStarted it works fine. What am I missing here?

[ArenMook]

You should use "onStoppedMoving" instead. OnDragFinished is when you actually stop dragging -- it doesn't mean the movement has ceased.

[rxmarcus]

I'm also having this issue, I have onDragFinished set to a function that simply prints a message to Console and it never gets called, so its not an issue of which one I should be using but that it just never gets called ever.

I am doing a zoom out and back in effect when the user starts drag and ends drag so I really do need to know when the drag ends rather then when movement stops.

[ArenMook]

I'm guessing it's because you have UICenterOnChild there. I believe in the current Asset Store version of NGUI, it sets the callback rather than += appending it. Line 85 of UICenterOnChild. Change equals to +=. Same thing with the scroll bar callbacks directly below.

[rxmarcus]

That was indeed the problem, thanks!