public bool OnItemLongClick(Android.Widget.AdapterView parent, Android.Views.View view, int position, long id)
{
var selectedItem = ((IList)Element.ItemsSource) [(int)id];
TemporalObject tmpObj = new TemporalObject(view, selectedItem);
ClipData data = ClipData.NewPlainText(string.Empty, string.Empty);
DragShadowBuilder shadowBuilder = new global::Android.Views.View.DragShadowBuilder(view);
view.StartDrag(data, shadowBuilder, tmpObj, 0);
return(true);
}
public bool OnDrag(Android.Views.View v, Android.Views.DragEvent e)
{
switch (e.Action)
{
case Android.Views.DragAction.Started:
break;
case Android.Views.DragAction.Entered:
//v.SetBackgroundColor(Android.Graphics.Color.Blue);
break;
case Android.Views.DragAction.Exited:
//v.SetBackgroundColor(Android.Graphics.Color.Transparent);
break;
case Android.Views.DragAction.Drop:
//v.SetBackgroundColor(Android.Graphics.Color.Transparent);
TemporalObject passObj = (TemporalObject)e.LocalState;
Android.Views.View view = passObj.View;
object passedItem = passObj.Item;
Android.Widget.ListView oldParent = (Android.Widget.ListView)view.Parent;
BaseAdapter sourceAdapter = (oldParent.Adapter is IWrapperListAdapter)?((IWrapperListAdapter)oldParent.Adapter).WrappedAdapter as BaseAdapter:((BaseAdapter)oldParent.Adapter);
Android.Widget.ListView newParent = Control;
BaseAdapter destinationAdapter = (oldParent.Adapter is IWrapperListAdapter)?((IWrapperListAdapter)newParent.Adapter).WrappedAdapter as BaseAdapter:((BaseAdapter)oldParent.Adapter);
if (DragAndDropListViewRenderer.ListMap.ContainsKey(oldParent.Id.ToString()) && DragAndDropListViewRenderer.ListMap.ContainsKey(newParent.Id.ToString()))
{
var sourceList = (IList)DragAndDropListViewRenderer.ListMap [oldParent.Id.ToString()];
var destinationList = (IList)DragAndDropListViewRenderer.ListMap [newParent.Id.ToString()];
if (sourceList.Contains(passedItem))
{
sourceList.Remove(passedItem);
destinationList.Add(passedItem);
}
destinationAdapter.NotifyDataSetChanged();
sourceAdapter.NotifyDataSetChanged();
}
break;
case Android.Views.DragAction.Ended:
break;
}
return(true);
}
public bool OnDrag(Android.Views.View v, Android.Views.DragEvent e)
{
switch (e.Action)
{
case Android.Views.DragAction.Started:
break;
case Android.Views.DragAction.Entered:
v.SetBackgroundColor(Android.Graphics.Color.Blue);
break;
case Android.Views.DragAction.Exited:
v.SetBackgroundColor(Android.Graphics.Color.Transparent);
break;
case Android.Views.DragAction.Drop:
v.SetBackgroundColor(Android.Graphics.Color.Transparent);
TemporalObject tmpObj = (TemporalObject)e.LocalState;
Android.Views.View view = tmpObj.View;
object passedItem = tmpObj.Item;
ListView oldParent = (ListView)view.Parent;
BaseAdapter sourceAdapter = (oldParent.Adapter is IWrapperListAdapter)?((IWrapperListAdapter)oldParent.Adapter).WrappedAdapter as BaseAdapter:((BaseAdapter)oldParent.Adapter);
Console.WriteLine(v.Parent.Parent);
ListView newParent = (ListView)v.Parent.Parent;
BaseAdapter destinationAdapter = (oldParent.Adapter is IWrapperListAdapter)?((IWrapperListAdapter)newParent.Adapter).WrappedAdapter as BaseAdapter:((BaseAdapter)oldParent.Adapter);
int removeLocation = oldParent.GetPositionForView(view);
int insertLocation = newParent.GetPositionForView(associatedView);
/*
* If drag and drop on the same list, same position, ignore
*/
if (DragAndDropListViewRenderer.ListMap.ContainsKey(oldParent.Id.ToString()) && DragAndDropListViewRenderer.ListMap.ContainsKey(newParent.Id.ToString()))
{
var sourceList = (IList)DragAndDropListViewRenderer.ListMap [oldParent.Id.ToString()];
var destinationList = (IList)DragAndDropListViewRenderer.ListMap [newParent.Id.ToString()];
if (!oldParent.Equals(newParent) || removeLocation != insertLocation)
{
if (sourceList.Contains(passedItem))
{
sourceList.Remove(passedItem);
destinationList.Insert(insertLocation, passedItem);
}
destinationAdapter.NotifyDataSetChanged();
sourceAdapter.NotifyDataSetChanged();
}
}
break;
case Android.Views.DragAction.Ended:
break;
}
return(true);
}
