public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
//var gridViewCell = viewType == 0 ?
// Element.ItemTemplate.CreateContent() as JWChinese.GridViewCell :
// Element.GroupHeaderTemplate.CreateContent() as JWChinese.GridViewCell;
var gridViewCell = viewType == 0 ?
Element.ItemTemplate.CreateContent() as ViewCell :
Element.GroupHeaderTemplate.CreateContent() as ViewCell;
// reflection method of setting isplatformenabled property
// We are going to re-set the Platform here because in some cases (headers mostly) its possible this is unset and
// when the binding context gets updated the measure passes will all fail. By applying this here the Update call
// further down will result in correct layouts.
try
{
var p = PlatformProperty.GetValue(Element);
PlatformProperty.SetValue(gridViewCell, p);
}
catch (Exception e) { }
var initialCellSize = new Xamarin.Forms.Size(Element.MinItemWidth, Element.RowHeight);
var view = new GridViewCellContainer(parent.Context, gridViewCell, parent, initialCellSize);
//Only add the click handler for items (not group headers.)
if (viewType == 0)
{
view.Click += mMainView_Click;
view.LongClickable = true;
}
//Height of the view will be taken as RowHeight for child items
//and the heightrequest property of the first view in the template
//or the render height (whatever that is) if the heightrequest property is not defined.
var height = viewType == 0 ? Convert.ToInt32(Element.RowHeight) :
gridViewCell.View.HeightRequest != -1 ?
Convert.ToInt32(gridViewCell.View.HeightRequest) :
Convert.ToInt32(gridViewCell.RenderHeight);
var width = Convert.ToInt32(Element.MinItemWidth);
var dpW = ConvertDpToPixels(width);
var dpH = ConvertDpToPixels(height);
//If there are no minimums then the view doesn't render at all.
view.SetMinimumWidth(dpW);
view.SetMinimumHeight(dpH);
var d = Resources.System.GetDrawable("statelist_item_background.xml");
view.SetBackground(d);
//If not set to match parent then the view doesn't stretch to fill.
//This is not necessary anymore with the plaform fix above.
//view.LayoutParameters = new GridLayoutManager.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.WrapContent);
//Wrap the view.
GridViewCell myView = new GridViewCell(view);
//return the view.
return(myView);
}
public GridViewCell(GridViewCellContainer view) : base(view)
{
ViewCellContainer = view;
}