How To Synchronize Content Of One View Depending On Scroll Position In Sibling Scrollview?

I have extended LinearLayout (vertical) to create a custom compound component. This in turn contains two children: one custom view that is drawn directly onto the view canvas. on

Solution 1:

You can have your activity listen to the scroll view adapter. in the adapter when ever the scroll position changes you execute the delegate in the Activity. That way the activity can update the rest of the views upon scroll view change.