Detecting when system buttons are visible while using 'immersive mode'

Question

I\'m currently using immersive mode (API 19) for one of my Activities as follows:

getWindow().getDecorView()
            .setSystemUiVisibility(
                     


        

Answer 1

UPDATED ANSWER:

Set an OnSystemUiVisibilityChangeListener, force immersive mode when visibility is 0 (rather than 6).

if(android.os.Build.VERSION.SDK_INT >= 19) {
        getWindow().getDecorView().setOnSystemUiVisibilityChangeListener(new OnSystemUiVisibilityChangeListener() {
            @Override
            public void onSystemUiVisibilityChange(int visibility) {
                if(visibility == 0) {
                    getWindow().getDecorView().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_IMMERSIVE_STICKY);
                }
            }
        });
    }

OLD, NASTY ANSWER:

this is nasty, but it is a solution IFF you were showing an ActionBar:

• add an OnGlobalLayoutListener to the ViewTreeObserver of 'action_bar_container'.
• in the OnGlobalLayoutListener implementation, check if 'action_bar_container' visibility if GONE or not.
• when it moved from GONE to !GONE (and assuming you were in immersive mode) then force immersive mode again via the setSystemUiVisibility method.

---

if(android.os.Build.VERSION.SDK_INT >= 19) {
        int actionBarContainerId = Resources.getSystem().getIdentifier("action_bar_container", "id", "android");
        ((ViewGroup)findViewById(actionBarContainerId)).getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                int actionBarContainerId = Resources.getSystem().getIdentifier("action_bar_container", "id", "android");
                ViewGroup actionBarContainer = (ViewGroup) findViewById(actionBarContainerId);
                if(actionBarContainer.getVisibility() == View.GONE) {
                    if(DEBUG) Log.d(TAG, "...PROBABLY IN IMMERSIVE MODE AND ALL IS GOOD!..");
                } else {
                    if(DEBUG) Log.d(TAG, "...PROBABLY NO LONGER IN IMMERSIVE MODE, HEY..");
                    getWindow().getDecorView().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_IMMERSIVE_STICKY);
                }

            }
        });
    }