- if (hideSystemBarsOnFullscreen) { // Hide everything.
- // Remove the translucent navigation setting if it is currently flagged.
- getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
-
- // Remove the translucent status bar overlay.
- getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
-
- // Remove the translucent status bar overlay on the `Drawer Layout`, which is special and needs its own command.
- drawerLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
-
- /* SYSTEM_UI_FLAG_FULLSCREEN hides the status bar at the top of the screen.
- * SYSTEM_UI_FLAG_HIDE_NAVIGATION hides the navigation bar on the bottom or right of the screen.
- * SYSTEM_UI_FLAG_IMMERSIVE_STICKY makes the status and navigation bars translucent and automatically re-hides them after they are shown.
- */
- rootCoordinatorLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
- } else { // Hide everything except the status and navigation bars.
- // Remove any `SYSTEM_UI` flags from `rootCoordinatorLayout`.
- rootCoordinatorLayout.setSystemUiVisibility(0);
-
- // Add the translucent status flag if it is unset.
- getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
-
- if (translucentNavigationBarOnFullscreen) {
- // Set the navigation bar to be translucent. This also resets `drawerLayout's` `View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN`.
- getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
- } else {
- // Set the navigation bar to be black.
- getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
- }
- }
- } else { // Switch to normal viewing mode.
- // Show the `appBar` if `findOnPageLinearLayout` is not visible.
- if (findOnPageLinearLayout.getVisibility() == View.GONE) {
- appBar.show();