public override View GetView(int position, View reusableView, ViewGroup parent)
{
UIElement listItem = null;
if (reusableView == null)
{
reusableView = new WrapedViewGroup(parent.Context);
listItem = ((UIElement)this.Generator.Generate(position));
LogicalTreeHelper.AddLogicalChild(this.VirtualizingStackPanel, listItem);
this.NativeViewContainers.Add(listItem.NativeUIElement, listItem);
((WrapedViewGroup)reusableView).AddView(listItem.NativeUIElement);
}
else
{
var nativeItem = ((WrapedViewGroup)reusableView).GetChildAt(0);
if (this.NativeViewContainers.ContainsKey(nativeItem))
{
listItem = this.NativeViewContainers[nativeItem];
this.Generator.Reuse(position, listItem);
}
else
{
((WrapedViewGroup)reusableView).RemoveAllViews();
listItem = ((UIElement)this.Generator.Generate(position));
LogicalTreeHelper.AddLogicalChild(this.VirtualizingStackPanel, listItem);
this.NativeViewContainers.Add(listItem.NativeUIElement, listItem);
((WrapedViewGroup)reusableView).AddView(listItem.NativeUIElement);
}
}
var availableSize = this.VirtualizingStackPanel.Orientation == Orientation.Horizontal
? new SizeF(float.PositiveInfinity, this.VirtualizingStackPanel.measuredSize.Height)
: new SizeF(this.VirtualizingStackPanel.measuredSize.Width, float.PositiveInfinity);
var measuredSize = listItem.MeasureOverride(availableSize);
listItem.Arrange(new RectangleF(PointF.Empty, measuredSize));
// Need to use AbsListView.LayoutParams to prevent Java.CastException
reusableView.LayoutParameters = new AbsListView.LayoutParams((int)ScreenProperties.ConvertDPIToPixels(listItem.measuredSize.Width), (int)ScreenProperties.ConvertDPIToPixels(listItem.measuredSize.Height));
return reusableView;
}
public override View GetView(int position, View reusableView, ViewGroup parent)
{
UIElement listItem = null;
if (reusableView == null)
{
reusableView = new WrapedViewGroup(parent.Context);
listItem = ((UIElement)this.Generator.Generate(position));
LogicalTreeHelper.AddLogicalChild(this.ListPicker, listItem);
this.NativeViewContainers.Add(listItem.NativeUIElement, listItem);
((WrapedViewGroup)reusableView).AddView(listItem.NativeUIElement);
}
else
{
var nativeItem = ((WrapedViewGroup)reusableView).GetChildAt(0);
if (this.NativeViewContainers.ContainsKey(nativeItem))
{
listItem = this.NativeViewContainers[nativeItem];
this.Generator.Reuse(position, listItem);
}
else
{
((WrapedViewGroup)reusableView).RemoveAllViews();
listItem = ((UIElement)this.Generator.Generate(position));
LogicalTreeHelper.AddLogicalChild(this.ListPicker, listItem);
this.NativeViewContainers.Add(listItem.NativeUIElement, listItem);
((WrapedViewGroup)reusableView).AddView(listItem.NativeUIElement);
}
}
var width = GetDialogWidth() / WidthDivider;
var availableSize = new SizeF(ScreenProperties.ConvertPixelsToDPI(width), float.PositiveInfinity);
var measuredSize = listItem.MeasureOverride(availableSize);
listItem.Arrange(new RectangleF(PointF.Empty, measuredSize));
ThreadPool.QueueUserWorkItem(o => DisableTouch((View)listItem.NativeUIElement.Parent));
// Need to use AbsListView.LayoutParams to prevent Java.CastException
reusableView.LayoutParameters = new AbsListView.LayoutParams((int)width, (int)ScreenProperties.ConvertDPIToPixels(listItem.measuredSize.Height));
//if (position == this.SelectedItemPosition)
//{
// listItem.NativeUIElement.SetBackgroundColor(Android.Graphics.Color.ParseColor("#33b5e5"));
// lastSelectedView = listItem.NativeUIElement;
//}
//else
//{
// listItem.NativeUIElement.SetBackgroundColor(Android.Graphics.Color.Transparent);
//}
return reusableView;
}
