Cannot Place UI elements over viewport

[xerotolerant]

I can't figure out how to draw some Ui elements over the map.
I was using google maps and cordova previously and I could "draw" over a map since it was drawn within a div container.

In this case I don't know which element, if any I can apply some css to in order to draw over the map. Is it even possible to do so?

[bradmartin]

Using a GridLayout you can place elements on top of the MapBox now if you declare it in your markup.

If you need an idea how to 'float' a view component on top of another check the FAB plugin README here using a GridLayout https://github.com/bradmartin/nativescript-floatingactionbutton#xml