public static void MakeFlingAware(this AbsListView list)
{
list.SetOnScrollListener(new ScrollChangedListener((view, state) =>
{
(view.Adapter as IFlingAwareAdapter).FlingScrollActive = state == ScrollState.Fling;
}));
}
public static void MakeFlingAware(this AbsListView list, Action <bool> action)
{
list.SetOnScrollListener(new ScrollChangedListener((view, state) =>
{
action.Invoke(state == ScrollState.Fling);
}));
}
public static void MakeFlingAware(this AbsListView list, Action <bool> action)
{
list.SetOnScrollListener(new OnScrollListener(null, tuple =>
{
action.Invoke(tuple.Item2 == ScrollState.Fling);
}));
}
/// <summary>
/// Bind this class to the goto top button in the parent view
/// </summary>
/// <param name="parentView"></param>
/// <param name="listView"></param>
public void BindControl(View parentView, AbsListView listView)
{
if (parentView != null)
{
fab = parentView.FindViewById <FloatingActionButton>(Resource.Id.goto_top_button);
if (fab != null)
{
// Hide the button initially
fab.Visibility = ViewStates.Gone;
// Hook into the listview's scroll events
listView.SetOnScrollListener(this);
// Scroll back to the top when the button is clicked
fab.Click += (sender, e) =>
{
if (listView.FirstVisiblePosition > 20)
{
listView.SetSelection(20);
}
listView.SmoothScrollToPosition(0);
};
}
}
else
{
fab = null;
}
}
public static void ClearFlingAdapter(this AbsListView container)
{
if (FlingStates.ContainsKey(container))
{
FlingStates.Remove(container);
}
container.SetOnScrollListener(null);
}
public void AttachToListView(AbsListView listView, IScrollDirectorListener scrollDirectionListener = null, AbsListView.IOnScrollListener onScrollListener = null)
{
var scrollDetector = new AbsListViewScrollDetectorImpl(this);
scrollDetector.ScrollDirectionListener = scrollDirectionListener;
scrollDetector.OnScrollListener = onScrollListener;
scrollDetector.ListView = listView;
scrollDetector.ScrollThreshold = scrollThreshold;
listView.SetOnScrollListener(scrollDetector);
}
public void ConfigureBrowsingFor
(
AbsListView abstractBrowseView,
Func <int> getThumbnailWidth,
Action viewTypeChanged,
Action scaleTypeChanged
)
{
_abstractBrowseView = abstractBrowseView;
_getThumbnailWidth = getThumbnailWidth;
_viewTypeChanged = viewTypeChanged;
_scaleTypeChanged = scaleTypeChanged;
_abstractBrowseView.ScrollBarStyle = ScrollbarStyles.InsideInset;
_abstractBrowseView.FastScrollEnabled = true;
_abstractBrowseView.FastScrollAlwaysVisible = true;
AbsListView.IOnScrollListener browseScrollListener = CreateScrollListener();
_abstractBrowseView.SetOnScrollListener(browseScrollListener);
_gridViewButton = Activity.FindViewById <Button>(Resource.Id.GridViewButton);
_gridViewButton.Click -= GridViewButtonClicked;
_gridViewButton.Click += GridViewButtonClicked;
_gridViewButton.LongClick -= ModeButtonLongClicked;
_gridViewButton.LongClick += ModeButtonLongClicked;
_listViewButton = Activity.FindViewById <Button>(Resource.Id.ListViewButton);
_listViewButton.Click -= ListViewButtonClicked;
_listViewButton.Click += ListViewButtonClicked;
_listViewButton.LongClick -= ModeButtonLongClicked;
_listViewButton.LongClick += ModeButtonLongClicked;
_cropThumbnailButton = Activity.FindViewById <Button>(Resource.Id.CropThumbnailButton);
_cropThumbnailButton.Click -= CropThumbnailButtonClicked;
_cropThumbnailButton.Click += CropThumbnailButtonClicked;
_cropThumbnailButton.LongClick -= ModeButtonLongClicked;
_cropThumbnailButton.LongClick += ModeButtonLongClicked;
_fitThumbnailButton = Activity.FindViewById <Button>(Resource.Id.FitThumbnailButton);
_fitThumbnailButton.Click -= FitThumbnailButtonClicked;
_fitThumbnailButton.Click += FitThumbnailButtonClicked;
_fitThumbnailButton.LongClick -= ModeButtonLongClicked;
_fitThumbnailButton.LongClick += ModeButtonLongClicked;
}
private void ApplyScrollListener()
{
listView.SetOnScrollListener(new PauseOnScrollListener(ImageLoader.Instance, pauseOnScroll, pauseOnFling));
}
public void ClearFlingAdapter()
{
_view.SetOnScrollListener(null);
_view.Adapter = null;
}