public void OnScrollStateChanged(AbsListView view, ScrollState scrollState)
{
if (OnScrollListener != null)
{
OnScrollListener.OnScrollStateChanged(view, scrollState);
}
}
/**
* Register a callback to be invoked when this Workspace is mid-scroll or mid-fling, either
* due to user interaction or programmatic changes in the current screen index.
*
* @param scrollListener The callback.
* @param notifyImmediately Whether to trigger a notification immediately
*/
public void SetOnScrollListener(OnScrollListener scrollListener, bool notifyImmediately)
{
mOnScrollListener = scrollListener;
if (mOnScrollListener != null && notifyImmediately)
{
mOnScrollListener.OnScroll(GetCurrentScreenFraction());
}
}
public void OnScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount)
{
if (OnScrollListener != null)
{
OnScrollListener.OnScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
}
if (totalItemCount == 0)
{
return;
}
if (IsSameRow(firstVisibleItem))
{
var newScrollY = TopItemScrollY;
var isSignificantDelta = Math.Abs(lastScrollY - newScrollY) > ScrollThreshold;
if (isSignificantDelta)
{
if (lastScrollY > newScrollY)
{
OnScrollUp();
}
else
{
OnScrollDown();
}
}
lastScrollY = newScrollY;
}
else
{
if (firstVisibleItem > previousVisibleItem)
{
OnScrollUp();
}
else
{
OnScrollDown();
}
lastScrollY = TopItemScrollY;
previousVisibleItem = firstVisibleItem;
}
}
/**
* Implement this method to customize the AbsListView
*/
protected void InitRecyclerView(View view)
{
mRecycler = (RecyclerView)view.FindViewById(AndroidResource.Id.List);
tipView = (TextView)view.FindViewById(Resource.Id.tvTip);
SetItemAnimator(null);
if (mRecycler == null)
{
return;
}
mRecycler.HasFixedSize = true;
mRecycler.SetClipToPadding(mClipToPadding);
mInternalOnScrollListener = new CustomOnScrollListener(this);
mRecycler.AddOnScrollListener(mInternalOnScrollListener);
if (mPadding != -1.0f)
{
mRecycler.SetPadding(mPadding, mPadding, mPadding, mPadding);
}
else
{
mRecycler.SetPadding(mPaddingLeft, mPaddingTop, mPaddingRight, mPaddingBottom);
}
if (mScrollbarStyle != -1)
{
mRecycler.ScrollBarStyle = (ScrollbarStyles)mScrollbarStyle;
}
switch (mScrollbar)
{
case 0:
VerticalScrollBarEnabled = false;
break;
case 1:
HorizontalScrollBarEnabled = false;
break;
case 2:
VerticalScrollBarEnabled = false;
HorizontalScrollBarEnabled = false;
break;
}
}
/**
* Register a callback to be invoked when this Workspace is mid-scroll or mid-fling, either
* due to user interaction or programmatic changes in the current screen index.
*
* @param scrollListener The callback.
* @param notifyImmediately Whether to trigger a notification immediately
*/
public void SetOnScrollListener(OnScrollListener scrollListener, bool notifyImmediately) {
mOnScrollListener = scrollListener;
if (mOnScrollListener != null && notifyImmediately) {
mOnScrollListener.OnScroll(GetCurrentScreenFraction());
}
}
public void SetOnScrollListener(OnScrollListener listener)
{
mScrollListener = listener;
}
public void SetOnScrollListener(OnScrollListener listener)
{
mScrollListener = listener;
}
