[SOLVED] change the background color of the application from a fragment

change the background color of the application from a fragment

I am currently using an architecture where I have multiple fragments that I swap in the same activity.
I need to be able to use a different background color for one of these fragments BUT I don't want to use the lazy solution that adds one layer of overdraw.
For clarity : I have a window background setted by my theme and on top of it I draw cards & lists. In one of my fragments I need a slightly different window background color.
Is there any way to do that ? I already tried to use a ContextThemeWrapper but it does not seem to work (maybe because the background has already been drawed ?)

Thanks in advance for your help.

Solution

Just found it :

It is doable by calling

    ColorDrawable cd = new ColorDrawable(getActivity().getResources().getColor(
                R.color.your_color));

    getActivity().getWindow().setBackgroundDrawable(cd);

during the initialization of your fragment, when it is attached to the activity.