navigationbar - Hiding navigation bar without rooting on android -

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i want make fullscreen application android tablets , try hide navigation bar , 4.0+. read similar questions , answers found dont work me. if not possible hide navigation bar forever, how can hide , after make visible slide bottom? saw in games , think possible. far tried , @ first hides navigation bar when touched screen navigation bar become visible again , dont want it.

decorview = getwindow().getdecorview();     int uioptions = view.system_ui_flag_hide_navigation             | view.system_ui_flag_fullscreen; decorview.setsystemuivisibility(uioptions);

and tried again doest work me

decorview.setonsystemuivisibilitychangelistener             (new view.onsystemuivisibilitychangelistener() {         @override         public void onsystemuivisibilitychange(int visibility) {             // note system bars "visible" if none of             // low_profile, hide_navigation, or fullscreen flags set.             if ((visibility & view.system_ui_flag_fullscreen) == 0) {                 int uioptions = view.system_ui_flag_hide_navigation                         | view.system_ui_flag_fullscreen;           decorview.setsystemuivisibility(uioptions);               } else {                 int uioptions = view.system_ui_flag_hide_navigation                         | view.system_ui_flag_fullscreen;           decorview.setsystemuivisibility(uioptions);             }         }     });

how can hide , make visible sliding bottom or hide forever? please give me advice. in advance

i believe describing have seen in games called "immersive mode". navigation bar disappears completely, , gesture edge of screen brings back. feature available starting @ android version 4.4.

before android 4.4, since android version 4.0, can use "hide navigation" flag, temporarily hide navigation bar. problem mode interaction screen cause navigation bar reappear. of course isn't useful apps require lot of interaction screen, games.

i typically use following functions moving in , out of immersive mode:

private void hidesystemui() {     mdecorview.setsystemuivisibility(view.system_ui_flag_layout_stable             | view.system_ui_flag_layout_hide_navigation             | view.system_ui_flag_layout_fullscreen             | view.system_ui_flag_hide_navigation             | view.system_ui_flag_fullscreen             | view.system_ui_flag_low_profile             | view.system_ui_flag_immersive); // flag 4.4+ }  private void showsystemui() {     mdecorview.setsystemuivisibility(view.system_ui_flag_layout_stable             | view.system_ui_flag_layout_hide_navigation             | view.system_ui_flag_layout_fullscreen); }

then in oncreate, set mdecorview , call hidesystemui:

    mdecorview = getwindow().getdecorview();     hidesystemui();

the code similar have though, may not help. there detailed video on subject, including more detailed source code examples, here: https://www.youtube.com/watch?v=cbi8fjv90e4


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