public void filter(FriendsCustomAdapter adapter, string constraint)
{
if (constraint != null && constraint.Length > 0)
{
ObservableCollection <UserItem> matchList = new ObservableCollection <UserItem>();
foreach (UserItem item in adapter.persons.ToList())
{
if (item.Name.StartsWith(constraint.ToString()))
{
matchList.Add(item);
}
}
adapter.persons = matchList;
adapter.NotifyDataSetChanged();
}
}
protected override void PublishResults(ICharSequence constraint, FilterResults results)
{
ObservableCollection <UserItem> items = new ObservableCollection <UserItem>();
if (constraint != null && constraint.Length() > 0)
{
Java.Lang.Object[] values = (Java.Lang.Object[])results.Values;
for (int i = 0; i < values.Length; i++)
{
items.Add(new UserItem
{
Name = values.GetValue(i).ToString()
}
);
}
}
friendsCustomAdapter.persons = items;
friendsCustomAdapter.NotifyDataSetChanged();
}