Image zooming issue on Ionic - ionic-framework

Question

I am trying to implement image zooming for image in Ionic app.
It has been implemented here
and works flawlessly on the original project created with Ionic V 1.0.0 but doesn't seem to work all that good in Ionic V 1.3.0.
On V 1.1.0 this
($ionicScrollDelegate.$getByHandle('scrollHandle' +
slide).getScrollPosition())
logs a json like this
{"left":0,"top":0,"zoom":1}
But in V 1.3.0 it logs it as
undefined
Also on chrome it shows warning like this:
Delegate for handle "scrollHandle0" could not find a corresponding
element with delegate-handle="scrollHandle0"! getScrollPosition() was
not called! Possible cause: If you are calling getScrollPosition()
immediately, and your element with delegate-handle="scrollHandle0" is
a child of your controller, then your element may not be compiled yet.
Put a $timeout around your call to getScrollPosition() and try again.
This is still working on devices (tested both on iOS and Android) but not smooth at all. It is very laggy.
Any thoughts or workarounds?

Answer 1

So the issue had nothing to do with Ionic version which I realised after more debugging. It was due to
delegate-handle="scrollHandle{{$index}}"
In my usecase I was not using ng-repeat so was using
delegate-handle="scrollHandle"
But this was not working and causing the above mentioned issues. So fix was to add 0 as index with it. In my case this solved it.
delegate-handle="scrollHandle0"
In other cases use case may be different so but if using ng-repeat this would work
delegate-handle="scrollHandle{{$index}}"
and if not this should do the trick
delegate-handle="scrollHandle0"