部分基于Pauland的回答（反过来基于PhoneWindowManager的实现），下面是我目前使用的代码：

public static boolean isSystemBarOnBottom(Context ctxt) {
    Resources res=ctxt.getResources();
    Configuration cfg=res.getConfiguration();
    DisplayMetrics dm=res.getDisplayMetrics();
    boolean canMove=(dm.widthPixels != dm.heightPixels &&
        cfg.smallestScreenWidthDp < 600);

    return(!canMove || dm.widthPixels < dm.heightPixels);
  }

这在Nexus 7 2012和Nexus 4上都有效，这两款手机都运行Android 5.1。
在具有永久MENU键的设备上，没有系统栏。根据您的使用情况，您可能需要检查这种情况：

ViewConfiguration.get(ctxt).hasPermanentMenuKey()

（其中ctxt是某个Context）
就我个人而言，我使用这个来尝试将滑动面板放在系统栏的相反轴上，因为在系统栏一侧的边框滑动有点难以触发。我不会使用这个或任何其他算法（如依赖于getDecorView()的算法）来处理任何关键问题。

通过结合使用decor视图的属性和当前的DisplayMetrics，您可以找出导航栏位于哪一侧。

// retrieve the position of the DecorView
Rect visibleFrame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(visibleFrame);

DisplayMetrics dm = getResources().getDisplayMetrics();
// check if the DecorView takes the whole screen vertically or horizontally
boolean isRightOfContent = dm.heightPixels == visibleFrame.bottom;
boolean isBelowContent   = dm.widthPixels  == visibleFrame.right;

我的解决方案

public static boolean hasNavBar (Resources resources)
{
    int id = resources.getIdentifier("config_showNavigationBar", "bool", "android");
    if (id > 0)
        return resources.getBoolean(id);
    else
        return false;
}

public static int getNavigationBarHeight (Resources resources)
{
    if (!Utils.hasNavBar(resources))
        return 0;

    int orientation = resources.getConfiguration().orientation;

    //Only phone between 0-599 has navigationbar can move
    boolean isSmartphone = resources.getConfiguration().smallestScreenWidthDp < 600;
    if (isSmartphone && Configuration.ORIENTATION_LANDSCAPE == orientation)
        return 0;

    int id = resources
        .getIdentifier(orientation == Configuration.ORIENTATION_PORTRAIT ? "navigation_bar_height" : "navigation_bar_height_landscape", "dimen", "android");
    if (id > 0)
        return resources.getDimensionPixelSize(id);

    return 0;
}

public static int getNavigationBarWidth (Resources resources)
{
    if (!Utils.hasNavBar(resources))
        return 0;

    int orientation = resources.getConfiguration().orientation;

    //Only phone between 0-599 has navigationbar can move
    boolean isSmartphone = resources.getConfiguration().smallestScreenWidthDp < 600;

    if (orientation == Configuration.ORIENTATION_LANDSCAPE && isSmartphone)
    {
        int id = resources.getIdentifier("navigation_bar_width", "dimen", "android");
        if (id > 0)
            return resources.getDimensionPixelSize(id);
    }

    return 0;
}

基于https://android.googlesource.com/platform/frameworks/base/+/9f65c4c34abb07bdda54649ed510af26f16e9c1b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java的解决方案

我的工作解决方案是：

public static boolean hasNavBar(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Point realPoint = new Point();
        Display display = wm.getDefaultDisplay();
        display.getRealSize(realPoint);
        DisplayMetrics metrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(metrics);
        return metrics.heightPixels + metrics.widthPixels != realPoint.y + realPoint.x;
    }

    public static boolean isSystemBarOnBottom(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Point realPoint = new Point();
        Display display = wm.getDefaultDisplay();
        display.getRealSize(realPoint);
        DisplayMetrics metrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(metrics);
        Configuration cfg = context.getResources().getConfiguration();
        boolean canMove = (metrics.widthPixels != metrics.heightPixels &&
                cfg.smallestScreenWidthDp < 600);

        return (!canMove || metrics.widthPixels < metrics.heightPixels);
    }

这是我的应用程序，我用这个半透明的状态栏和导航栏来设置填充。

boolean navBarOnTheBottom(){
        DisplayMetrics displaymetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
        int viewHeight = displaymetrics.heightPixels;
        if (bkg.getHeight() == viewHeight)
        {
            Log.d(TAG, "nav bar on the side");
            return false;
        }
        else{
            Log.d(TAG, "nav bar on the bottom");
            return true;
        }
    }

bkg它是保存我所有应用视图的主linearLayout。请确保bkg.getHeight（）不会给予你0，对于某些布局，它确实给了我0

**EDIT：**如果上面的值为0，则获取如下布局高度

@Override
    public void onWindowFocusChanged (boolean hasFocus) {
        // the height will be set at this point
        bkgHeight = bkg.getHeight();
    }

请注意，从Android 7.1开始，导航栏也可能位于屏幕的左侧。为了确保您始终知道导航栏的位置，请使用DisplayListener检查Android 7.1及更高版本的180°屏幕变化，如下所示：How to detect screen rotation through 180 degrees from landscape to landscape orientation?
我已经成功而可靠地使用了以下代码来确定导航栏位置的任何更改：

DisplayManager.DisplayListener displayListener;

@Override
protected void onCreate(Bundle savedInstanceState) {

    ...

    displayListener = new DisplayManager.DisplayListener() {
        private int lastRotation =
                ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
                                           .getDefaultDisplay().getRotation();

        @Override
        public void onDisplayAdded(int displayId) {
        }

        @Override
        public void onDisplayChanged(int displayId) {
            int rotation = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
                                   .getDefaultDisplay().getRotation();
            if (rotation == Surface.ROTATION_90
                        && lastRotation == Surface.ROTATION_270
                    || rotation == Surface.ROTATION_270
                        && lastRotation == Surface.ROTATION_90) {
                onNavigationBarMoved(true);
            }
            lastRotation = rotation;
        }

        @Override
        public void onDisplayRemoved(int displayId) {
        }
    };
    DisplayManager displayManager =
            (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
    displayManager.registerDisplayListener(displayListener, null);
    onNavigationBarMoved(false);
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    onNavigationBarMoved(false);
}

@Override
protected void onDestroy() {
    if (displayListener != null) {
        DisplayManager displayManager =
                (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
        displayManager.unregisterDisplayListener(displayListener);
    }
    super.onDestroy();
}

protected void onNavigationBarMoved(boolean landscapeScreenRotation) {
    boolean leftSideNavigationBar = Build.VERSION.SDK_INT > Build.VERSION_CODES.N
                         && ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
                                .getDefaultDisplay().getRotation() == Surface.ROTATION_270;
    // add whatever else you need here
}

请记住，将已处于横向模式的设备旋转180°时，Activity不会重新创建，因此在onNavigationBarMoved中，landscapeScreenRotation的值会告诉您何时发生这种情况，以便您相应地重新调整UI。

所有现有的答案都不适用于FLAG_LAYOUT_NO_LIMITS。我找到了一个新的解决方案：

@Override
    public void onResume() {
        super.onResume();

        ViewCompat.setOnApplyWindowInsetsListener(requireActivity().getWindow().getDecorView(), (v, insets) -> {    
            int sysbottom = insets.getInsets(WindowInsetsCompat.Type.systemBars()).bottom;
            int systop = insets.getInsets(WindowInsetsCompat.Type.systemBars()).top;
            int sysleft = insets.getInsets(WindowInsetsCompat.Type.systemBars()).left;
            int sysright = insets.getInsets(WindowInsetsCompat.Type.systemBars()).right;

            return insets;
        });
    }

下面是sysbottom、sysstop、sysleft、sysright -导航栏和状态栏的系统栏缩进值（以像素为单位）。