android detect Samsung Galaxy S8 navigation bar hide or show programmatically

Question

On some devices such as Samsung S8, navigation bar can be hide or show, that's a question in some condition. Samsung S8's navigation bar can be hide or show by click left bottom button

I didn't find straight way to determine even if in the Android sources code.

And I google some issues, such as A good solution to check for navigation bar , but it doesn't help.

Any help is very appreciated.

Answer 1

First, credit the original author: https://www.jianshu.com/p/ddfbabd614b6

For the Samsung phones (i.e, S8, S9, etc) you can detect if the navigation bar is showing via listening to a Samsung event.

private static final String SAMSUNG_NAVIGATION_EVENT = "navigationbar_hide_bar_enabled";

Then just listen to this event, and do your thing:

private void checkNavigationBar() {
    if (isSamsungVersionNougat()) { // check if Samsung phones
        // detect navigation bar
        try {
            // there are navigation bar
            if (Settings.Global.getInt(activity.getContentResolver(), SAMSUNG_NAVIGATION_EVENT) == 0) {
                // Your code
                // example: galleryViewModel.navigationBarHeight.set(getNavigationBarHeight());
            } else { // there are no navigation bar
                // Your code
                // example: galleryViewModel.navigationBarHeight.set(0);
            }
        } catch (Exception ignored) {
        }
        barHideEnableObserver = new BarHideEnableObserver(new Handler());
        activity.getContentResolver().registerContentObserver(
                Settings.Global.getUriFor(SAMSUNG_NAVIGATION_EVENT),
                true, barHideEnableObserver);
    } else {
        galleryViewModel.navigationBarHeight.set(getNavigationBarHeight());
    }
}