Dynamic Stack layout

Well i have this stack layout (horizontal) and it seems to wrap my images horizontally. What i want to achieve is if one of my images does not fit in the screen then insert the images in the next row: something like this:

This is what it is currently doing:

this is what i want to achieve:

My stack layout has the current properties:

 StackLayout container = new StackLayout
            {
                VerticalOptions = LayoutOptions.FillAndExpand,
                HorizontalOptions = LayoutOptions.Start,
                Orientation = StackOrientation.Horizontal,
                Padding = 20,
                //HeightRequest = 150,
                BackgroundColor = Color.Black
            };