How do I get the height and width of the Android Navigation Bar programmatically

Question

The black navigation bar on the bottom of the screen is not easily removable in Android  It has been part of Android since 3 0 as a replacement for hardware buttons  Here is a picture     How can I get the size of the width and the height of this UI element in pixels

User · Answer

Simple One-line Solution   As suggested in many of above answers  for example   https   stackoverflow com a 29938139 9640177 https   stackoverflow com a 26118045 9640177 https   stackoverflow com a 50775459 9640177 https   stackoverflow com a 41057024 9640177   Simply getting navigation bar height may not be enough  We need to consider whether 1  navigation bar exists  2  is it on the bottom  or right or left  3  is app open in multi-window mode   Fortunately you can easily bypass all the long coding by simply setting android fitsSystemWindows  true  in your root layout  Android system will automatically take care of adding necessary padding to the root layout to make sure that the child views don t get into the navigation bar or statusbar regions   There is a simple one line solution  android fitsSystemWindows  true    or programatically  findViewById R id your root view  setFitsSystemWindows true     you may also get root view by   findViewById android R id content  getRootView    or getWindow   getDecorView   findViewById android R id content    For more details on getting root-view refer - https   stackoverflow com a 4488149 9640177

User · Answer

In my case where I wanted to have something like this     I had to follow the same thing as suggested by  Mdlc but probably slightly simpler  targeting only    21          kotlin     val windowManager   getSystemService Context WINDOW SERVICE  as WindowManager     val realSize   Point       windowManager defaultDisplay getRealSize realSize       val usableRect   Rect       windowManager defaultDisplay getRectSize usableRect      Toast makeText this   Usable Screen      usableRect     real   realSize  Toast LENGTH LONG  show        window decorView setPadding usableRect left  usableRect top  realSize x - usableRect right  realSize y - usableRect bottom    It works on landscape too     Edit The above solution does not work correctly in multi-window mode where the usable rectangle is not smaller just due to the navigation bar but also because of custom window size  One thing that I noticed is that in multi-window the navigation bar is not hovering over the app so even with no changes to DecorView padding we have the correct behaviour      Note the difference between how navigation bar is hovering over the bottom of the app in these to scenarios  Fortunately  this is easy to fix  We can check if app is multi window  The code below also includes the part to calculate and adjust the position of toolbar  full solution  https   stackoverflow com a 14213035 477790          kotlin        Let the window flow into where window decorations are     window addFlags WindowManager LayoutParams FLAG LAYOUT IN SCREEN      window addFlags WindowManager LayoutParams FLAG LAYOUT NO LIMITS          calculate where the bottom of the page should end up  considering the navigation bar  back buttons           val windowManager   getSystemService Context WINDOW SERVICE  as WindowManager     val realSize   Point       windowManager defaultDisplay getRealSize realSize       val usableRect   Rect       windowManager defaultDisplay getRectSize usableRect      Toast makeText this   Usable Screen      usableRect     real     realSize  Toast LENGTH LONG  show        if  Build VERSION SDK INT  lt  Build VERSION CODES N     isInMultiWindowMode            window decorView setPadding usableRect left  usableRect top  realSize x - usableRect right  realSize y - usableRect bottom             move toolbar appbar further down to where it should be and not to overlap with status bar         val layoutParams   ConstraintLayout LayoutParams appBarLayout layoutParams as ConstraintLayout LayoutParams          layoutParams topMargin   getSystemSize Constants statusBarHeightKey          appBarLayout layoutParams   layoutParams         Result on Samsung popup mode

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I resolved this issue for all devices including Nexus 5  Samsung Galaxy Nexus 6 edge   Samsung S10  Samsung Note II etc    I think this will help you to handle device dependant issues   Here I am adding two types of codes   Java Code for Native Android    import android content Context  import android content res Resources  import android os Build  import android util DisplayMetrics  import android view Display  import android view ViewConfiguration  import android view WindowManager   public class DeviceSpec        private int resourceID   -1      private Display display   null      private DisplayMetrics displayMetrics   null      private DisplayMetrics realDisplayMetrics   null      private Resources resources   null      private WindowManager windowManager   null       public double GetNavigationBarHeight Context context            try               windowManager    WindowManager  context getSystemService Context WINDOW SERVICE               display   windowManager getDefaultDisplay                displayMetrics   new DisplayMetrics                if Build VERSION SDK INT  gt   Build VERSION CODES ICE CREAM SANDWICH MR1                    realDisplayMetrics   new DisplayMetrics                    display getMetrics displayMetrics                   display getRealMetrics realDisplayMetrics                   if displayMetrics heightPixels    realDisplayMetrics heightPixels                        resources   context getResources                        return GetNavigationBarSize context                                               else                   resources   context getResources                    resourceID   resources getIdentifier  config showNavigationBar    bool    android                    if  resourceID  gt  0  amp  amp  resources getBoolean resourceID                       return GetNavigationBarSize context                                   catch  Exception e               e printStackTrace                      return 0             private double GetNavigationBarSize Context context            resourceID   resources getIdentifier  navigation bar height    dimen    android            if  resourceID  gt  0  amp  amp  ViewConfiguration get context  hasPermanentMenuKey               return  resources getDimensionPixelSize resourceID    displayMetrics density           return 0            And C  code for Xamarin Forms Android   int resourceId   -1          IWindowManager windowManager   null          Display defaultDisplay   null          DisplayMetrics displayMatrics   null          DisplayMetrics realMatrics   null          Resources resources   null           public double NavigationBarHeight                       get                               try                                       windowManager   Forms Context GetSystemService Context WindowService  JavaCast lt IWindowManager gt                         defaultDisplay   windowManager DefaultDisplay                      displayMatrics   new DisplayMetrics                        if  Build VERSION SdkInt  gt   BuildVersionCodes JellyBeanMr2                                                realMatrics   new DisplayMetrics                            defaultDisplay GetMetrics displayMatrics                           defaultDisplay GetRealMetrics realMatrics                           if  displayMatrics HeightPixels    realMatrics HeightPixels                                                        resources   Forms Context Resources                              return GetHeightOfNivigationBar                                                                        else                           resources   Forms Context Resources                          resourceId   resources GetIdentifier  config showNavigationBar    bool    android                            if  resourceId  gt  0  amp  amp  resources GetBoolean resourceId                               return GetHeightOfNivigationBar                                                            catch  Exception e                      return 0                                   private double GetHeightOfNivigationBar                         resourceId   resources GetIdentifier  navigation bar height    dimen    android                if   ViewConfiguration Get Forms Context  HasPermanentMenuKey  amp  amp  resourceId  gt  0                                return resources GetDimensionPixelSize resourceId    displayMatrics Density                            return 0

User · Answer

Actually the navigation bar on tablets  at least Nexus 7  has different size in portrait and landscape so this function should look like this   private int getNavigationBarHeight Context context  int orientation        Resources resources   context getResources         int id   resources getIdentifier              orientation    Configuration ORIENTATION PORTRAIT    navigation bar height     navigation bar height landscape                dimen    android        if  id  gt  0            return resources getDimensionPixelSize id             return 0

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I think better answer is here because it allows you to get even cutout height too   Take your root view  and add setOnApplyWindowInsetsListener  or you can override onApplyWindowInsets from it   and take insets getSystemWindowInsets from it   In my camera activity  i add padding equal to the systemWindowInsetBottom to my bottom layout  And finally  it fix cutout issue     with appcompat it is like this  ViewCompat setOnApplyWindowInsetsListener mCameraSourcePreview   v  insets  - gt        takePictureLayout setPadding 0 0 0 insets getSystemWindowInsetBottom         return insets consumeSystemWindowInsets          without appcompat  this   mCameraSourcePreview setOnApplyWindowInsetsListener  v  insets  - gt

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Combining the answer from  egis and others - this works well on a variety of devices  tested on Pixel EMU  Samsung S6  Sony Z3  Nexus 4  This code uses the display dimensions to test for availability of nav bar and then uses the actual system nav bar size if present    x000D   x000D      x000D     Calculates the system navigation bar size  x000D      x000D   x000D  public final class NavigationBarSize   x000D   x000D   private final int systemNavBarHeight  x000D    NonNull x000D   private final Point navBarSize  x000D   x000D   public NavigationBarSize  NonNull Context context    x000D    Resources resources   context getResources    x000D    int displayOrientation   resources getConfiguration   orientation  x000D    final String name  x000D    switch  displayOrientation    x000D     case Configuration ORIENTATION PORTRAIT  x000D      name    navigation bar height   x000D      break  x000D     default  x000D      name    navigation bar height landscape   x000D      x000D    int id   resources getIdentifier name   dimen    android    x000D    systemNavBarHeight   id  gt  0   resources getDimensionPixelSize id    0  x000D    navBarSize   getNavigationBarSize context   x000D     x000D   x000D   public void adjustBottomPadding  NonNull View view   DimenRes int defaultHeight    x000D    int height   0  x000D    if  navBarSize y  gt  0    x000D        the device has a nav bar  get the correct size from the system x000D     height   systemNavBarHeight  x000D      x000D    if  height    0    x000D        fallback to default x000D     height   view getContext   getResources   getDimensionPixelSize defaultHeight   x000D      x000D    view setPadding 0  0  0  height   x000D     x000D   x000D    NonNull x000D   private static Point getNavigationBarSize  NonNull Context context    x000D    Point appUsableSize   new Point    x000D    Point realScreenSize   new Point    x000D    WindowManager windowManager    WindowManager  context getSystemService Context WINDOW SERVICE   x000D    if  windowManager    null    x000D     Display display   windowManager getDefaultDisplay    x000D     display getSize appUsableSize   x000D     display getRealSize realScreenSize   x000D      x000D    return new Point realScreenSize x - appUsableSize x  realScreenSize y - appUsableSize y   x000D     x000D   x000D    x000D   x000D   x000D

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Here is how I solved this  I made a hideable bottom bar which needed padding depending on if there was a navigation bar or not  capacitive  on-screen or just pre lollipop      View  setPadding 0  0  0  Utils hasNavBar getContext      30   0       Utils java  public static boolean hasNavBar Context context           Kitkat and less shows container above nav bar     if  android os Build VERSION SDK INT  lt   Build VERSION CODES KITKAT            return false               Emulator     if  Build FINGERPRINT startsWith  generic              return true            boolean hasMenuKey   ViewConfiguration get context  hasPermanentMenuKey        boolean hasBackKey   KeyCharacterMap deviceHasKey KeyEvent KEYCODE BACK       boolean hasNoCapacitiveKeys    hasMenuKey  amp  amp   hasBackKey      Resources resources   context getResources        int id   resources getIdentifier  config showNavigationBar    bool    android        boolean hasOnScreenNavBar   id  gt  0  amp  amp  resources getBoolean id       return hasOnScreenNavBar    hasNoCapacitiveKeys    getNavigationBarHeight context  true   gt  0     public static int getNavigationBarHeight Context context  boolean skipRequirement        int resourceId   context getResources   getIdentifier  navigation bar height    dimen    android        if  resourceId  gt  0  amp  amp   skipRequirement    hasNavBar context              return context getResources   getDimensionPixelSize resourceId             return 0

User · Answer

The height of the bottom Navigation bar is 48dp  in both portrait and landscape mode  and is 42dp when the bar is placed vertically

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The solution proposed by Egidijus and works perfectly for Build VERSION SDK INT    17  But I got  NoSuchMethodException  during execution of the following statement with Build VERSION SDK INT  lt  17 on my device   Display class getMethod  getRawHeight   invoke display     I have modified the method getRealScreenSize   for such cases   else if Build VERSION SDK INT  gt   14         View decorView   getActivity   getWindow   getDecorView        size x   decorView getWidth        size y   decorView getHeight

User · Answer

I ve done this  it works on every device I tested  and even on emulators      Return the NavigationBar height in pixels if it is present  otherwise return 0 public static int getNavigationBarHeight Activity activity        Rect rectangle   new Rect        DisplayMetrics displayMetrics   new DisplayMetrics        activity getWindow   getDecorView   getWindowVisibleDisplayFrame rectangle       activity getWindowManager   getDefaultDisplay   getRealMetrics displayMetrics       return displayMetrics heightPixels -  rectangle top   rectangle height

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How to get the height of the navigation bar and status bar  This code works for me on some Huawei devices and Samsung devices  Egis s solution above is good  however  it is still incorrect on some devices  So  I improved it   This is code to get the height of status bar  private fun getStatusBarHeight resources  Resources   Int           var result   0         val resourceId   resources getIdentifier  status bar height    dimen    android           if  resourceId  gt  0                result   resources getDimensionPixelSize resourceId                    return result         This method always returns the height of navigation bar even when the navigation bar is hidden   private fun getNavigationBarHeight resources  Resources   Int       val resourceId   resources getIdentifier  navigation bar height    dimen    android       return if  resourceId  gt  0            resources getDimensionPixelSize resourceId        else 0     NOTE  on Samsung A70  this method returns the height of the status bar   height of the navigation bar  On other devices  Huawei   it only returns the height of the Navigation bar and returns 0 when the navigation bar is hidden   private fun getNavigationBarHeight    Int           val display   activity  windowManager  defaultDisplay         return if  display    null                0           else               val realMetrics   DisplayMetrics               display getRealMetrics realMetrics              val metrics   DisplayMetrics               display getMetrics metrics              realMetrics heightPixels - metrics heightPixels                   This is code to get height of navigation bar and status bar  val metrics   DisplayMetrics           activity  windowManager  defaultDisplay  getRealMetrics metrics             resources is got from activity            NOTE  on SamSung A70  this height   height of status bar   height of Navigation bar           On other devices  Huawei   this height   height of Navigation bar         val navigationBarHeightOrNavigationBarPlusStatusBarHeight   getNavigationBarHeight            val statusBarHeight   getStatusBarHeight resources            The method will always return the height of navigation bar even when the navigation bar was hidden          val realNavigationBarHeight   getNavigationBarHeight resources           val realHeightOfStatusBarAndNavigationBar                   if  navigationBarHeightOrNavigationBarPlusStatusBarHeight    0    navigationBarHeightOrNavigationBarPlusStatusBarHeight  lt  statusBarHeight                          Huawei  navigation bar is hidden                     statusBarHeight                   else if  navigationBarHeightOrNavigationBarPlusStatusBarHeight    realNavigationBarHeight                          Huawei  navigation bar is visible                     statusBarHeight   realNavigationBarHeight                   else if  navigationBarHeightOrNavigationBarPlusStatusBarHeight  lt  realNavigationBarHeight                          SamSung A70  navigation bar is still visible but it only displays as a under line                       navigationBarHeightOrNavigationBarPlusStatusBarHeight   navigationBarHeight  under line    statusBarHeight                     navigationBarHeightOrNavigationBarPlusStatusBarHeight                   else                         SamSung A70  navigation bar is visible                       navigationBarHeightOrNavigationBarPlusStatusBarHeight    statusBarHeight   realNavigationBarHeight                     navigationBarHeightOrNavigationBarPlusStatusBarHeight

User · Answer

The NavigationBar height varies for some devices  but as well for some orientations  First you have to check if the device has a navbar  then if the device is a tablet or a not-tablet  phone  and finally you have to look at the orientation of the device in order to get the correct height   public int getNavBarHeight Context c             int result   0           boolean hasMenuKey   ViewConfiguration get c  hasPermanentMenuKey             boolean hasBackKey   KeyCharacterMap deviceHasKey KeyEvent KEYCODE BACK             if  hasMenuKey  amp  amp   hasBackKey                   The device has a navigation bar              Resources resources   c getResources                  int orientation   resources getConfiguration   orientation               int resourceId               if  isTablet c                     resourceId   resources getIdentifier orientation    Configuration ORIENTATION PORTRAIT    navigation bar height     navigation bar height landscape    dimen    android                    else                    resourceId   resources getIdentifier orientation    Configuration ORIENTATION PORTRAIT    navigation bar height     navigation bar width    dimen    android                                      if  resourceId  gt  0                     return resources getDimensionPixelSize resourceId                                      return result       private boolean isTablet Context c        return  c getResources   getConfiguration   screenLayout              amp  Configuration SCREENLAYOUT SIZE MASK               gt   Configuration SCREENLAYOUT SIZE LARGE

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This is my code to add paddingRight and paddingBottom to a View to dodge the Navigation Bar  I combined some of the answers here and made a special clause for landscape orientation together with isInMultiWindowMode  The key is to read navigation bar height  but also check config showNavigationBar to make sure we should actually use the height   None of the previous solutions worked for me  As of Android 7 0 you have to take Multi Window Mode into consideration  This breaks the implementations comparing display realSize with display size since realSize gives you the dimensions of the whole screen  both split windows  and size only gives you the dimensions of your App window  Setting padding to this difference will leave your whole view being padding       Adds padding to a view to dodge the navigation bar       Unfortunately something like this needs to be done since there     are no attr or dimens value available to get the navigation bar     height  as of December 2016      public static void addNavigationBarPadding Activity context  View v        Resources resources   context getResources        if  hasNavigationBar resources             int orientation   resources getConfiguration   orientation          int size   getNavigationBarSize resources           switch  orientation            case Configuration ORIENTATION LANDSCAPE              if  Build VERSION SDK INT  gt   Build VERSION CODES N  amp  amp                  context isInMultiWindowMode      break                v setPadding v getPaddingLeft    v getPaddingTop                             v getPaddingRight     size  v getPaddingBottom                 break          case Configuration ORIENTATION PORTRAIT              v setPadding v getPaddingLeft    v getPaddingTop                             v getPaddingRight    v getPaddingBottom     size               break                     private static int getNavigationBarSize Resources resources        int resourceId   resources getIdentifier  navigation bar height                                                 dimen    android        return resourceId  gt  0   resources getDimensionPixelSize resourceId    0     private static boolean hasNavigationBar Resources resources        int hasNavBarId   resources getIdentifier  config showNavigationBar                                                  bool    android        return hasNavBarId  gt  0  amp  amp  resources getBoolean hasNavBarId

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Tested code for getting height of navigation bar  in pixels    public static int getNavBarHeight Context c        int resourceId   c getResources                          getIdentifier  navigation bar height    dimen    android        if  resourceId  gt  0            return c getResources   getDimensionPixelSize resourceId             return 0      Tested code for getting height of status bar  in pixels    public static int getStatusBarHeight Context c        int resourceId   c getResources                          getIdentifier  status bar height    dimen    android        if  resourceId  gt  0            return c getResources   getDimensionPixelSize resourceId             return 0      Converting pixels to dp   public static int pxToDp int px        return  int   px   Resources getSystem   getDisplayMetrics   density

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I hope this helps you  public int getStatusBarHeight         int result   0      int resourceId   getResources   getIdentifier  status bar height    dimen    android        if  resourceId  gt  0            result   getResources   getDimensionPixelSize resourceId             return result     public int getNavigationBarHeight         boolean hasMenuKey   ViewConfiguration get context  hasPermanentMenuKey        int resourceId   getResources   getIdentifier  navigation bar height    dimen    android        if  resourceId  gt  0  amp  amp   hasMenuKey                return getResources   getDimensionPixelSize resourceId             return 0

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I get navigation bar size by comparing app-usable screen size with real screen size  I assume that navigation bar is present when app-usable screen size is smaller than real screen size  Then I calculate navigation bar size  This method works with API 14 and up   public static Point getNavigationBarSize Context context        Point appUsableSize   getAppUsableScreenSize context       Point realScreenSize   getRealScreenSize context           navigation bar on the side     if  appUsableSize x  lt  realScreenSize x            return new Point realScreenSize x - appUsableSize x  appUsableSize y                 navigation bar at the bottom     if  appUsableSize y  lt  realScreenSize y            return new Point appUsableSize x  realScreenSize y - appUsableSize y                 navigation bar is not present     return new Point       public static Point getAppUsableScreenSize Context context        WindowManager windowManager    WindowManager  context getSystemService Context WINDOW SERVICE       Display display   windowManager getDefaultDisplay        Point size   new Point        display getSize size       return size     public static Point getRealScreenSize Context context        WindowManager windowManager    WindowManager  context getSystemService Context WINDOW SERVICE       Display display   windowManager getDefaultDisplay        Point size   new Point         if  Build VERSION SDK INT  gt   17            display getRealSize size         else if  Build VERSION SDK INT  gt   14            try               size x    Integer  Display class getMethod  getRawWidth   invoke display               size y    Integer  Display class getMethod  getRawHeight   invoke display             catch  IllegalAccessException e     catch  InvocationTargetException e     catch  NoSuchMethodException e                return size      UPDATE  For a solution that takes into account display cutouts please check John s answer

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In case of Samsung S8 none of the above provided methods were giving proper height of navigation bar so I used the KeyboardHeightProvider keyboard height provider android  And it gave me height in negative values and for my layout positioning I adjusted that value in calculations    Here is KeyboardHeightProvider java    import android app Activity  import android content res Configuration  import android graphics Point  import android graphics Rect  import android graphics drawable ColorDrawable  import android view Gravity  import android view LayoutInflater  import android view View  import android view ViewTreeObserver OnGlobalLayoutListener  import android view WindowManager LayoutParams  import android widget PopupWindow           The keyboard height provider  this class uses a PopupWindow    to calculate the window height when the floating keyboard is opened and closed       public class KeyboardHeightProvider extends PopupWindow            The tag for logging purposes        private final static String TAG    sample KeyboardHeightProvider            The keyboard height observer        private KeyboardHeightObserver observer           The cached landscape height of the keyboard        private int keyboardLandscapeHeight           The cached portrait height of the keyboard        private int keyboardPortraitHeight           The view that is used to calculate the keyboard height        private View popupView           The parent view        private View parentView           The root activity that uses this KeyboardHeightProvider        private Activity activity                   Construct a new KeyboardHeightProvider                 param activity The parent activity             public KeyboardHeightProvider Activity activity            super activity           this activity   activity           LayoutInflater inflator    LayoutInflater  activity getSystemService Activity LAYOUT INFLATER SERVICE           this popupView   inflator inflate R layout popupwindow  null  false           setContentView popupView            setSoftInputMode LayoutParams SOFT INPUT ADJUST RESIZE   LayoutParams SOFT INPUT STATE ALWAYS VISIBLE           setInputMethodMode PopupWindow INPUT METHOD NEEDED            parentView   activity findViewById android R id content            setWidth 0           setHeight LayoutParams MATCH PARENT            popupView getViewTreeObserver   addOnGlobalLayoutListener new OnGlobalLayoutListener                       Override                 public void onGlobalLayout                         if  popupView    null                            handleOnGlobalLayout                                                                                  Start the KeyboardHeightProvider  this must be called after the onResume of the Activity         PopupWindows are not allowed to be registered before the onResume has finished        of the Activity              public void start              if   isShowing    amp  amp  parentView getWindowToken      null                setBackgroundDrawable new ColorDrawable 0                showAtLocation parentView  Gravity NO GRAVITY  0  0                                   Close the keyboard height provider          this provider will not be used anymore              public void close             this observer   null          dismiss                           Set the keyboard height observer to this provider  The         observer will be notified when the keyboard height has changed          For example when the keyboard is opened or closed                  param observer The observer to be added to this provider              public void setKeyboardHeightObserver KeyboardHeightObserver observer            this observer   observer                        Get the screen orientation                return the screen orientation             private int getScreenOrientation             return activity getResources   getConfiguration   orientation                        Popup window itself is as big as the window of the Activity          The keyboard can then be calculated by extracting the popup view bottom         from the activity window height               private void handleOnGlobalLayout              Point screenSize   new Point            activity getWindowManager   getDefaultDisplay   getSize screenSize            Rect rect   new Rect            popupView getWindowVisibleDisplayFrame rect               REMIND  you may like to change this using the fullscreen size of the phone            and also using the status bar and navigation bar heights of the phone to calculate            the keyboard height  But this worked fine on a Nexus          int orientation   getScreenOrientation            int keyboardHeight   screenSize y - rect bottom           if  keyboardHeight    0                notifyKeyboardHeightChanged 0  orientation                     else if  orientation    Configuration ORIENTATION PORTRAIT                this keyboardPortraitHeight   keyboardHeight               notifyKeyboardHeightChanged keyboardPortraitHeight  orientation                      else               this keyboardLandscapeHeight   keyboardHeight               notifyKeyboardHeightChanged keyboardLandscapeHeight  orientation                                               private void notifyKeyboardHeightChanged int height  int orientation            if  observer    null                observer onKeyboardHeightChanged height  orientation                        public interface KeyboardHeightObserver           void onKeyboardHeightChanged int height  int orientation             popupwindow xml     lt  xml version  1 0  encoding  utf-8   gt   lt View     xmlns android  http   schemas android com apk res android      android id    id popuplayout      android layout width  match parent      android layout height  match parent      android background   android color transparent      android orientation  horizontal   gt    Usage in MainActivity   import android os Bundle import android support v7 app AppCompatActivity import kotlinx android synthetic main activity main           Created by nileshdeokar on 22 02 2018      class MainActivity   AppCompatActivity     KeyboardHeightProvider KeyboardHeightObserver         private lateinit var keyboardHeightProvider   KeyboardHeightProvider       override fun onCreate savedInstanceState  Bundle             super onCreate savedInstanceState          setContentView R layout activity main           keyboardHeightProvider   KeyboardHeightProvider this          parentActivityView post   keyboardHeightProvider  start                override fun onKeyboardHeightChanged height  Int  orientation  Int               In case of 18 9 - e g  Samsung S8            here you get the height of the navigation bar as negative value when keyboard is closed             and some positive integer when keyboard is opened             public override fun onPause             super onPause           keyboardHeightProvider  setKeyboardHeightObserver null             public override fun onResume             super onResume           keyboardHeightProvider  setKeyboardHeightObserver this             public override fun onDestroy             super onDestroy           keyboardHeightProvider  close             For any further help you can have a look at advanced usage of this here

User · Answer

New answer in 2021 comes to the rescue  insipred from Egis s answer  context navigationBarHeight  where the extension getter is val Context navigationBarHeight  Int get         val windowManager   getSystemService Context WINDOW SERVICE  as WindowManager      return if  Build VERSION SDK INT  gt   30            windowManager                  currentWindowMetrics                  windowInsets                  getInsets WindowInsets Type navigationBars                     bottom        else           val currentDisplay   try               display           catch  e  NoSuchMethodError                windowManager defaultDisplay                    val appUsableSize   Point           val realScreenSize   Point           currentDisplay  apply               getSize appUsableSize              getRealSize realScreenSize                        navigation bar on the side         if  appUsableSize x  lt  realScreenSize x                return realScreenSize x - appUsableSize x                       navigation bar at the bottom         return if  appUsableSize y  lt  realScreenSize y                realScreenSize y - appUsableSize y           else 0          tested on   emulators with navigation bars  pixel 3a  api 30  pixel 2  api 28  pixel 3  api 25  pixel 2  api 21    Xiaomi Poco f2 pro with  amp  without navigation bar full display

User · Answer

Try below code   Resources resources   context getResources    int resourceId   resources getIdentifier  navigation bar height    dimen    android    if  resourceId  gt  0        return resources getDimensionPixelSize resourceId     return 0

[android] How do I get the height and width of the Android Navigation Bar programmatically?

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