The WCollectionView is a Grid Collection View for Xamarin Forms, where you can define a custom height for each item, getting the "Waterfall" effect. If you don't provide the GetHeightForItemDelegate, you can define a min. & max. heights, so the control will set a random height between those values.

• Column Count
• Custom item height
• Grouping
• Pull To Refresh
• Header
• Item Tapped Event
• Header Tapped Event

• ColumnCount = 2
• MinCellHeight = 150
• MaxCellHeight = 250
• HeaderTemplateHeight = 250
• IsPullToRefreshEnabled = false
• IsGroupingEnabled = false

On Android, in your main Activity's OnCreate (..) implementation, call:

Wapps.Forms.Controls.Droid.WCollectionViewRenderer.Init(this);

In your AppDelegate's FinishedLaunching (..) implementation, call:

Wapps.Forms.Controls.iOS.WCollectionViewRenderer.Init();

double Lv_HeightForCellDelegate(object item)
{
    //calculate the item height here
    return 0;
}

void WCollectionView_ItemTapped(object sender, Wapps.Forms.Controls.WItemTappedEventArgs args)
{

}

Setting IsGroupingEnabled = true you can define a GroupHeaderTemplate and set the ItemsSource a IEnumerable<IEnumerable>.

You can handle the Group Header tapped event

void WCollectionView_HeaderTapped(object sender, Wapps.Forms.Controls.WItemTappedEventArgs args)
{

}