FMX,Android, D12. How to load and apply .style from disk

[Fudley 5]

What I am doing to load a .style file from disk:

 

   if FileExists(SelectedStyleFile) then
   begin
       Application.mainform.stylebook.LoadFromFile(SelectedStyleFile) ;
   end;

 

How do I then apply the style?

[Rollo62 573]

Try
https://docwiki.embarcadero.com/Libraries/Athens/en/FMX.Styles.TStyleManager.SetStyleFromFile

ON:
TStyleManager.SetStyleFromFile(styleToUse);

OFF:
TStyleManager.SetStyleFromFile(nil);