public void OnDownMotionEvent()
{
if (_observableScrollViewCallbacks != null)
{
_observableScrollViewCallbacks.OnDownMotionEvent();
}
}
public override bool OnInterceptTouchEvent(MotionEvent ev)
{
if (_mCallbacks != null)
{
switch (ev.ActionMasked)
{
case MotionEventActions.Down:
// Whether or not motion events are consumed by children,
// flag initializations which are related to ACTION_DOWN events should be executed.
// Because if the ACTION_DOWN is consumed by children and only ACTION_MOVEs are
// passed to parent (this view), the flags will be invalid.
// Also, applications might implement initialization codes to onDownMotionEvent,
// so call it here.
_mFirstScroll = _mDragging = true;
_mCallbacks.OnDownMotionEvent();
break;
}
}
return(base.OnInterceptTouchEvent(ev));
}