android - How do I undo changes to window decor view? -

i have 2 fragments in activity, fa , fb. when click button in fa, fb replaces fa. fb google play store view, when open view app. image under transparent status bar. did adding code fb#oncreateview:

    window w = getactivity().getwindow();     w.getdecorview().setsystemuivisibility(             view.system_ui_flag_layout_stable                     | view.system_ui_flag_layout_fullscreen);     w.setstatusbarcolor(color.transparent); 

when press back, fb removed , replace fa, everything's normal, toolbar under status bar. like:

whereas, should like:

this looks when fragment first loaded.

is there way clear flags set in fb? i've tried put code in onresume of fragment no luck!

    w.getdecorview().setsystemuivisibility(             view.system_ui_flag_layout_stable                     |view.system_ui_flag_visible); 

and, i've tried:

    w.clearflags(windowmanager.layoutparams.flag_fullscreen);     w.addflags(windowmanager.layoutparams.flag_force_not_fullscreen); 

any other way fix this? thank you!