Carousel Gestures

AndroidRenderer.cs

public override bool OnTouchEvent(MotionEvent e)
{
    switch(e.Action)
    {
        case MotionEventActions.Down:
        case MotionEventActions.PointerDown:
        case MotionEventActions.Pointer2Down:
            if(Element?.Content != null && IsHorizontalScrollStarted())
                Parent?.RequestDisallowInterceptTouchEvent(true);
            break;
        case MotionEventActions.Cancel:
        case MotionEventActions.Up:
            Parent?.RequestDisallowInterceptTouchEvent(false);
            break;
    }

    return base.OnTouchEvent(e);
}

bool IsHorizontalScrollStarted()
{
    return //Return true is scroll is started;
}

iOSRenderer.cs

public override void AddGestureRecognizer(UIGestureRecognizer gestureRecognizer)
{
    base.AddGestureRecognizer(gestureRecognizer);

    if (gestureRecognizer is UIPanGestureRecognizer)
        gestureRecognizer.ShouldBeRequiredToFailBy = ShouldBeRequiredToFailBy;

    gestureRecognizer.ShouldRecognizeSimultaneously = ShouldRecognizeSimultaneously;
}

bool ShouldBeRequiredToFailBy(UIGestureRecognizer gestureRecognizer, UIGestureRecognizer otherGestureRecognizer)
{
    if (IsHorizontalScrollStarted() && gestureRecognizer is UIPanGestureRecognizer && otherGestureRecognizer.View != this)
        return true;

    return false;
}

bool ShouldRecognizeSimultaneously(UIGestureRecognizer gestureRecognizer, UIGestureRecognizer otherGestureRecognizer)
{
    return !IsHorizontalScrollStarted();
}

bool IsHorizontalScrollStarted()
{
    return // Return true is scroll is started;
}