A full screen gesture adaptation scheme

Someone else's code copied online , I can't find the original , So it can only be marked as original , What the original author saw , Please contact me , I posted the original link

The reason for pasting here is that I'm afraid I won't find such an excellent scheme in the future

Here is the complete code ：

package com.yangcong345.support.base.utils;

import android.app.Activity;
import android.content.Context;
import android.os.Build;
import android.provider.Settings;
import android.text.TextUtils;
import android.view.View;
import android.view.Window;

/**
 *  Time ：2022/6/21 14:53
 *  author ： Rapeseed 
 *  remarks ： The method used to get the virtual navigation bar 
 */

public class NavigationBarUtil {

    /**
     *  Get the height of the virtual key 
     *  If the full screen is enabled , Then return to 0
     *  If the navigation bar is hidden , Then return to 0
     *  Return system value 
     */
    public static int getNavigationBarHeight(Context context) {
        if (isFullScreenEnable(context)) {
            return 0;
        }
        if (isNavigationBarHide(context)) {
            return 0;
        }
        return getNavigationBarHeightInner(context);
    }

    /**
     *  Whether the full screen gesture is enabled 
     */
    public static boolean isFullScreenEnable(Context context) {
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
            return Settings.Global.getInt(context.getContentResolver(), getDeviceInfo(), 0) != 0;
        }
        return false;
    }

    /**
     *  Get device information （ Currently, it supports several mainstream full screen mobile phones , Test Huawei 、 millet 、oppo、 meizu 、vivo Fine ）
     */
    private static String getDeviceInfo() {
        String brand = Build.BRAND;
        if (TextUtils.isEmpty(brand)) return "navigationbar_is_min";
        if (brand.equalsIgnoreCase("HUAWEI")) {
            return "navigationbar_is_min";
        } else if (brand.equalsIgnoreCase("XIAOMI")) {
            return "force_fsg_nav_bar";
        } else if (brand.equalsIgnoreCase("VIVO")) {
            return "navigation_gesture_on";
        } else if (brand.equalsIgnoreCase("OPPO")) {
            return "navigation_gesture_on";
        } else {
            return "navigationbar_is_min";
        }
    }

    /**
     *  Whether the virtual navigation bar is hidden , This method needs a delay to get 
     */
    private static boolean isNavigationBarHide(Context context) {
        if (!(context instanceof Activity)) return false;
        Activity activity = (Activity) context;
        View view = activity.findViewById(android.R.id.navigationBarBackground);
        if (view == null) return true;
        return view.getVisibility() != View.VISIBLE;
    }

    /**
     *  Virtual key height ( Whether hidden or not )
     */
    private static int getNavigationBarHeightInner(Context context) {
        int result = 0;
        int resourceId = context.getResources().getIdentifier("navigation_bar_height", "dimen", "android");
        if (resourceId > 0) {
            result = context.getResources().getDimensionPixelSize(resourceId);
        }
        return result;
    }

    public static void hideNavigationBar(Window window) {
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
            int option = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
            window.getDecorView().setSystemUiVisibility(option);
        }
    }

    /**
     *  To fit the height of the navigation bar 
     * <p>
     *  Be careful ： This place can't take the original paddingBottom Plus the height of the navigation bar 
     *  reason ： The user can change it to the form of sideslip or three King Kong in the system settings 
     *  So we need to be able to activity Of resume Inside to realize adaptation ,
     *  If the  paddingBottom + NavigationBarHeight In the form of 
     *  It will cause the spacing at the bottom to become larger and larger 
     *
     * @param rootView： Page and layout , After passing in the page and layout , A navigation bar will be added by default padding
     */
    public static void adapterNavigationBar(final View rootView) {
        rootView.post(() -> {
            int height = getNavigationBarHeight(rootView.getContext());
            rootView.setPadding(0, 0, 0, height);
        });
    }

}