programmatically reposition horizontal and vertical lists after render.

This is similar to Issue #209, in that I need to be able to somehow interact programmatically with inputs after a $render action.

In this case, I'm trying to implement a date picker using horizontal layout components.

After a date is picked, $render is called to update "When" field. I want to center highlighted date after the $render.

The reason why becomes more immediately obvious with time picker, which user will almost always scroll a good ways...like date picker, I want to center chosen time after it's tapped and highlighted and it becomes highlighted after $render is called.


To me, this means we need a way to scroll a list to a specific point after a $render is called programmatically.

Start by tracing the $render action and the horizontal and vertical list components in the iOS project. Determine how a list can be repositioned after rendering, and consider the date- and time-picker scenarios described; done means a chosen item can be centered programmatically after $render.

Written by the indexing model from the issue text.