[ScrollView] add defaultZoomScale

Hi,

ScrollView is missing a defaultZoomScale that would allow to define the initial zoom scale.

The current zoomScale prop is controlled and flickers a lot. In my use-case, I just want to be able to define the initial zoom scale, not to control it.

I’ve also attempted to do this in componentDidMount:

this.refs.myScrollView.setNativeProps({
  zoomScale: 3
});

but this create inconsistency issue on the scrollview: I can basically zoom out of the bounds (it totally breaks the scrollview)

Thanks

[emrekenci]

I think being able to define the default zoom would be a much more elegant way of doing this. Calling scrollResponderZoomTo method requires measuring the component, actually calling the method somewhere like componentDidMount and calculating the width and height for the scale that you need. People will inevitably lean towards setting the zoomScale property to accomplish this.

[ahmetabdi]

Any updates on this?