A CoordinatorLayout Behavior for any scroll view, that mimics that slingy feeling and behavior that scrolling containers do on iOS. This is just a proof of concept. Fling currently does not work.

SlingyBehavior.java

public class SlingyBehavior<V extends View> extends CoordinatorLayout.Behavior<V> implements ViewPropertyAnimatorUpdateListener {

    private int moveX = 0;
    private int moveY = 0;

    public SlingyBehavior() {
        super();
    }

    public SlingyBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, V child, View directTargetChild, View target,
            int nestedScrollAxes) {
        ViewCompat.animate(child).setUpdateListener(null).cancel();
        return true;
    }

    @Override
    public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target) {
        ViewCompat.animate(child).translationX(0).translationY(0).setUpdateListener(this).start();
    }

    @Override
    public void onNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dxConsumed, int dyConsumed, int dxUnconsumed,
            int dyUnconsumed) {
        if (dxUnconsumed != 0) {
            moveX += dxUnconsumed;
            ViewCompat.setTranslationX(child, moveX);
        }
        if (dyUnconsumed != 0) {
            moveY += dyUnconsumed;
            ViewCompat.setTranslationY(child, moveY);
        }
    }

    @Override
    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx, int dy, int[] consumed) {
        if (moveX != 0) {
            moveX += dx;
            if (moveX != 0) {
                consumed[0] = dx;
            }
            ViewCompat.setTranslationX(child, - moveX);
        }
        if (moveY != 0) {
            moveY += dy;
            if (moveY != 0) {
                consumed[1] = dy;
            }
            ViewCompat.setTranslationY(child, - moveY);
        }
    }

    @Override
    public void onAnimationUpdate(View view) {
        moveX = (int) ViewCompat.getTranslationX(view);
        moveY = (int) ViewCompat.getTranslationY(view);
    }
}