How to set layout_columnWeight for a GridLayout child when added programmatically?

-Here you are ! :>

Button button = new Button(this);
GridLayout.LayoutParams param= new GridLayout.LayoutParams(GridLayout.spec(
            GridLayout.UNDEFINED,GridLayout.FILL,1f),
            GridLayout.spec(GridLayout.UNDEFINED,GridLayout.FILL,1f));
param.height = 0;                                                                                                           
param.width  = 0;
button.setLayoutParams(param);