Fullscreen Activity in Android

Question

How do I make an activity full screen  I mean without the notification bar  Any ideas

User · Answer

Use this method after setContentView in onCreate() and pass the Window object by getWindow().

    public void makeActivityFullScreen(Window window){
    View decorView = window.getDecorView();
    //        int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
       window.getAttributes().layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
    }
    decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
    );
}

This code will work for notch screen also. To check the notch fullscreen you require android P but if You have a notch display phone then go to setting-->Display setting -->app display ratio --->select your app --->there will be two options safe are display and full screen , please select the full screen and run the app, you can see the fullscreen in notch also without having android Pie

User · Answer

With kotlin this is the way I did   class LoginActivity   AppCompatActivity          override fun onCreate savedInstanceState  Bundle             super onCreate savedInstanceState          setContentView R layout activity login          window decorView systemUiVisibility                   View SYSTEM UI FLAG LAYOUT STABLE or                 View SYSTEM UI FLAG LAYOUT FULLSCREEN or                 View SYSTEM UI FLAG FULLSCREEN            Immersive Mode  The immersive mode is intended for apps in which the user will be heavily interacting with the screen  Examples are games  viewing images in a gallery  or reading paginated content  like a book or slides in a presentation  For this  just add this lines   View SYSTEM UI FLAG HIDE NAVIGATION or View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION   Sticky immersive  In the regular immersive mode  any time a user swipes from an edge  the system takes care of revealing the system bars   your app won t even be aware that the gesture occurred  So if the user might actually need to swipe from the edge of the screen as part of the primary app experience   such as when playing a game that requires lots of swiping or using a drawing app   you should instead enable the  sticky  immersive mode   View SYSTEM UI FLAG IMMERSIVE STICKY   For more information  Enable fullscreen mode  In case your using the keyboard  sometimes happens that StatusBar shows when keyboard shows up  In that case I usually add this to my style xml  styles xml   lt style name  FullScreen  parent  AppTheme  gt       lt item name  android windowFullscreen  gt true lt  item gt   lt  style gt    And also this line to my manifest   lt activity         android name   ui login LoginActivity          android label   string title activity login          android theme   style FullScreen  gt

User · Answer

Be careful with  requestWindowFeature Window FEATURE NO TITLE     If you are using any method to set the action bar as the follow   getSupportActionBar   setHomeButtonEnabled true     It will cause a null pointer exception

User · Answer

getWindow   setFlags WindowManager LayoutParams FLAG LAYOUT NO LIMITS  WindowManager LayoutParams FLAG LAYOUT NO LIMITS   if  getSupportActionBar      null   getSupportActionBar   hide

User · Answer

thanks for answer  Cristian i was getting error      android util AndroidRuntimeException  requestFeature   must be called   before adding content   i solved this using   Override protected void onCreate Bundle savedInstanceState         requestWindowFeature Window FEATURE NO TITLE        super onCreate savedInstanceState        getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN  WindowManager LayoutParams FLAG FULLSCREEN        setContentView R layout activity login        -----     -----

User · Answer

TIP  Using getWindow   setLayout   can screw up your full screen display   Note the documentation for this method says      Set the width and height layout parameters of the window      you can change them to     an absolute value to make a window that is not full-screen    http   developer android com reference android view Window html setLayout 28int  20int 29  For my purposes  I found that I had to use setLayout with absolute parameters to resize my full screen window correctly   Most of the time  this worked fine   It was called by an onConfigurationChanged   event   There was a hiccup  however   If the user exited the app  changed the orientation  and reentered  it would lead to firing off my code which included setLayout     During this re-entry time window  my status bar  which was hidden by the manifest  would be made to re-appear  but at any other time setLayout   would not cause this   The solution was to add an additional setLayout   call after the one with the hard values like so          public static void setSize  final int width  final int height      DO SOME OTHER STUFF                instance  getWindow   setLayout  width  height                   Prevent status bar re-appearance             Handler delay   new Handler                delay postDelayed  new Runnable    public void run                     instance  getWindow   setLayout                      WindowManager LayoutParams FILL PARENT                      WindowManager LayoutParams FILL PARENT                    FILL PARENT ON RESIZE DELAY MILLIS                The window then correctly re-sized  and the status bar did not re-appear regardless of the event which triggered this

User · Answer

Create an empty activity and add two lines in onCreate   public class MainActivity extends AppCompatActivity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState               full screen activity         getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN  WindowManager LayoutParams FLAG FULLSCREEN           getSupportActionBar   hide             setContentView R layout activity main

User · Answer

You can do it programatically   public class ActivityName extends Activity        Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState              remove title         requestWindowFeature Window FEATURE NO TITLE           getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN              WindowManager LayoutParams FLAG FULLSCREEN           setContentView R layout main             Or you can do it via your AndroidManifest xml file    lt activity android name   ActivityName      android label   string app name      android theme   android style Theme NoTitleBar Fullscreen   gt    Edit   If you are using AppCompatActivity then you need to add new theme   lt style name  Theme AppCompat Light NoActionBar FullScreen  parent   style Theme AppCompat Light NoActionBar  gt       lt item name  android windowNoTitle  gt true lt  item gt       lt item name  android windowActionBar  gt false lt  item gt       lt item name  android windowFullscreen  gt true lt  item gt       lt item name  android windowContentOverlay  gt  null lt  item gt   lt  style gt    and then use it    lt activity android name   ActivityName      android label   string app name      android theme   style Theme AppCompat Light NoActionBar FullScreen   gt    Thanks to https   stackoverflow com a 25365193 1646479

User · Answer

On Android 10  none worked for me   But I that worked perfectly fine  1st line in oncreate         View decorView   getWindow   getDecorView        int uiOptions   View SYSTEM UI FLAG IMMERSIVE      decorView setSystemUiVisibility uiOptions        setContentView             if  getSupportActionBar      null            getSupportActionBar   hide            enjoy

User · Answer

To display content through the notch or the cutout area  This can help from the docs      LAYOUT IN DISPLAY CUTOUT MODE SHORT EDGES - Content renders into the cutout area in both portrait and landscape modes    Key thing for me was this line in the activity style      Important to draw through the cutouts  lt item name  android windowLayoutInDisplayCutoutMode  gt shortEdges lt  item gt     For me  I wanted to show an image in immersive mode  When I click it  I want the system UI  status  amp  navigation bars  to show up   Here is my solution   1- In the Activity  some methods to show hide system UI  status nav bars   private fun hideSystemUI         sysUIHidden   true     window decorView systemUiVisibility                 View SYSTEM UI FLAG IMMERSIVE STICKY             or View SYSTEM UI FLAG LAYOUT STABLE                 Hide the nav bar and status bar             or View SYSTEM UI FLAG HIDE NAVIGATION    Hide nav bar             or View SYSTEM UI FLAG FULLSCREEN    Hide status bar                   private fun showSystemUI         sysUIHidden   false     window decorView systemUiVisibility                 View SYSTEM UI FLAG LAYOUT STABLE                Set the content to appear under the system bars so that the                content doesn t resize when the system bars hide and show              or View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION    layout Behind nav bar             or View SYSTEM UI FLAG LAYOUT FULLSCREEN    layout Behind status bar                   2- Make sure this in the root view of your xml layout   android fitsSystemWindows  false    3- Style for Full screen Activity will give status navigation bars a semi transparent background when they show up    lt style name  FullscreenTheme  parent  AppTheme  gt       lt item name  android actionBarStyle  gt  style FullscreenActionBarStyle lt  item gt       lt item name  android windowActionBarOverlay  gt true lt  item gt       lt item name  android windowBackground  gt  null lt  item gt       lt item name  metaButtonBarStyle  gt  android attr buttonBarStyle lt  item gt       lt item name  metaButtonBarButtonStyle  gt  android attr buttonBarButtonStyle lt  item gt       lt item name  android statusBarColor  gt  50000000 lt  item gt       lt item name  android navigationBarColor  gt  50000000 lt  item gt         Important to draw behind cutouts      lt item name  android windowLayoutInDisplayCutoutMode  gt shortEdges lt  item gt    lt  style gt    lt style name  FullscreenActionBarStyle  parent  Widget AppCompat ActionBar  gt       lt item name  android background  gt  color sysTransparent lt  item gt   lt  style gt

User · Answer

After a lot of time with no success I came with my own solution which is quit similar with another developer  So If somebody needs her it is My problem was that system navigation bar was not hiding after calling  Also in my case I needed landscape  so just in case comment that line and that all   First of all create style       lt style name  FullscreenTheme  parent  AppTheme  gt       lt item name  android actionBarStyle  gt  style FullscreenActionBarStyle lt  item gt       lt item name  android windowActionBarOverlay  gt true lt  item gt       lt item name  android windowBackground  gt  null lt  item gt       lt item name  metaButtonBarStyle  gt  android attr buttonBarStyle lt  item gt       lt item name  metaButtonBarButtonStyle  gt  android attr buttonBarButtonStyle lt  item gt   lt  style gt    This is my manifest file   lt activity         android name   Splash          android screenOrientation  landscape          android configChanges  orientation keyboard keyboardHidden screenLayout screenSize          android label   string app name          android theme   style SplashTheme  gt            lt intent-filter gt               lt action android name  android intent action MAIN    gt                lt category android name  android intent category LAUNCHER    gt           lt  intent-filter gt       lt  activity gt        lt activity         android name   MainActivity          android configChanges  orientation keyboard keyboardHidden screenLayout screenSize          android screenOrientation  landscape          android label   string app name          android theme   style FullscreenTheme  gt       lt  activity gt    This is my spalsh activity  public class Splash extends Activity       Duration of wait     private final int SPLASH DISPLAY LENGTH   2000       Called when the activity is first created      Override public void onCreate Bundle icicle        super onCreate icicle       setContentView R layout splash creen           New Handler to start the Menu-Activity        and close this Splash-Screen after some seconds        new Handler   postDelayed new Runnable             Override         public void run                    Create an Intent that will start the Menu-Activity                 Intent mainIntent   new Intent Splash this MainActivity class               Splash this startActivity mainIntent               Splash this finish                     SPLASH DISPLAY LENGTH          And this is my main full screen activity  onSystemUiVisibilityChange thi method is quit important otherwise android main navigation bar after calling will stay and not disappear anymore  Really irritating problem  but this function solves that problem   public class MainActivity extends AppCompatActivity    private View mContentView   Override public void onResume        super onResume         mContentView setSystemUiVisibility View SYSTEM UI FLAG LOW PROFILE               View SYSTEM UI FLAG FULLSCREEN               View SYSTEM UI FLAG LAYOUT STABLE               View SYSTEM UI FLAG IMMERSIVE STICKY               View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION               View SYSTEM UI FLAG HIDE NAVIGATION       Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState        setContentView R layout fullscreen2       ActionBar actionBar   getSupportActionBar        if  actionBar    null                actionBar hide              mContentView   findViewById R id fullscreen content text       mContentView setSystemUiVisibility View SYSTEM UI FLAG LOW PROFILE               View SYSTEM UI FLAG FULLSCREEN               View SYSTEM UI FLAG LAYOUT STABLE               View SYSTEM UI FLAG IMMERSIVE STICKY               View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION               View SYSTEM UI FLAG HIDE NAVIGATION          View decorView   getWindow   getDecorView        decorView setOnSystemUiVisibilityChangeListener              new View OnSystemUiVisibilityChangeListener                                  Override                 public void onSystemUiVisibilityChange int visibility                                        System out println  print                         if   visibility  amp  View SYSTEM UI FLAG FULLSCREEN     0                                                mContentView setSystemUiVisibility View SYSTEM UI FLAG LOW PROFILE                                   View SYSTEM UI FLAG FULLSCREEN                                   View SYSTEM UI FLAG LAYOUT STABLE                                   View SYSTEM UI FLAG IMMERSIVE STICKY                                   View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION                                   View SYSTEM UI FLAG HIDE NAVIGATION                                             else                                                mContentView setSystemUiVisibility View SYSTEM UI FLAG LOW PROFILE                                       View SYSTEM UI FLAG FULLSCREEN                                       View SYSTEM UI FLAG LAYOUT STABLE                                       View SYSTEM UI FLAG IMMERSIVE STICKY                                       View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION                                       View SYSTEM UI FLAG HIDE NAVIGATION                                                                        This is my splash screen layout     lt LinearLayout xmlns android  http   schemas android com apk res android      android orientation  vertical  android layout width  fill parent      android layout height  fill parent  gt       lt ImageView android id    id splashscreen  android layout width  wrap content          android layout height  fill parent          android background   android color white          android src   drawable splash          android layout gravity  center   gt       lt TextView android layout width  fill parent          android layout height  wrap content          android text  Hello World  splash   gt   lt  LinearLayout gt   This is my fullscreen layout      lt  xml version  1 0  encoding  utf-8   gt       lt FrameLayout xmlns android  http   schemas android com apk res android          android layout width  match parent          android layout height  match parent          android background   0099cc           gt           lt TextView             android id    id fullscreen content text              android layout width  match parent              android layout height  match parent              android gravity  center              android keepScreenOn  true              android text   string dummy content2              android textColor   33b5e5              android textSize  50sp              android textStyle  bold    gt        lt  FrameLayout gt    I hope this will help you

User · Answer

protected void onCreate Bundle savedInstanceState        requestWindowFeature Window FEATURE NO TITLE       super onCreate savedInstanceState       getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN WindowManager LayoutParams FLAG FULLSCREEN       setContentView R layout activity splash screen       getSupportActionBar   hide

User · Answer

Using Android Studio  current version is 2 2 2 at moment  is very easy to add a fullscreen activity    See the steps    Right click on your java main package   Select    New      Select    Activity      Then  click on    Fullscreen Activity          Customize the activity     Activity Name        Layout Name    and so on  and click    finish         Done    Now you have a fullscreen activity made easily  see the java class and the activity layout to know how the things works

User · Answer

Add this in styles xml  lt item name  quot android windowFullscreen quot  gt true lt  item gt   Example -  lt style name  quot AppTheme quot  parent  quot Theme AppCompat Light NoActionBar quot  gt       lt  -- Customize your theme here  -- gt       lt item name  quot windowActionBar quot  gt false lt  item gt       lt item name  quot windowNoTitle quot  gt true lt  item gt       lt item name  quot colorPrimary quot  gt  color colorPrimary lt  item gt       lt item name  quot colorPrimaryDark quot  gt  color colorPrimaryDark lt  item gt       lt item name  quot android windowFullscreen quot  gt true lt  item gt       lt item name  quot colorAccent quot  gt  color colorAccent lt  item gt   lt  style gt   And change AndroidManifest file with bellow code android theme  quot  style AppTheme quot   Example -  lt application     android allowBackup  quot true quot      android icon  quot  mipmap ic launcher quot      android label  quot  string app name quot      android roundIcon  quot  mipmap ic launcher round quot      android theme  quot  style AppTheme quot      android supportsRtl  quot true quot  gt

User · Answer

Just paste this code into onCreate   method  requestWindowFeature Window FEATURE NO TITLE   getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN              WindowManager LayoutParams FLAG FULLSCREEN

User · Answer

For those using AppCompact    style xml    lt style name  Xlogo  parent  Theme AppCompat DayNight NoActionBar  gt       lt item name  android windowNoTitle  gt true lt  item gt       lt item name  android windowFullscreen  gt true lt  item gt   lt  style gt    Then put the name in your manifest

User · Answer

show Full Immersive   private void askForFullScreen                 getActivity   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    hide nav bar                           View SYSTEM UI FLAG FULLSCREEN    hide status bar                           View SYSTEM UI FLAG IMMERSIVE           move out of full immersive mode    private void moveOutOfFullScreen             getActivity   getWindow   getDecorView   setSystemUiVisibility                  View SYSTEM UI FLAG LAYOUT STABLE                           View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION                           View SYSTEM UI FLAG LAYOUT FULLSCREEN

User · Answer

There s a technique called Immersive Full-Screen Mode available in KitKat    Example

User · Answer

https   developer android com training system-ui immersive html  Activity     Override public void onWindowFocusChanged boolean hasFocus            super onWindowFocusChanged hasFocus       if  hasFocus            decorView 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             AndroidManifests     lt activity android name   LoginActivity              android configChanges  orientation keyboardHidden screenSize              android label   string title activity login              android theme   style FullscreenTheme               gt  lt  activity gt

User · Answer

AndroidManifest xml   lt activity               android theme   style FullScreenTheme       gt   lt  activity gt    I  Your main app the theme is Theme AppCompat Light DarkActionBar  For hide ActionBar   StatusBar style xml   lt style name  AppTheme  parent  Theme AppCompat Light DarkActionBar  gt           lt  style gt    lt style name  FullScreenTheme  parent  AppTheme  gt       lt  --this property will help hide the ActionBar-- gt       lt item name  windowNoTitle  gt true lt  item gt       lt  --currently  I don t know why we need this property since use windowNoTitle only already help hide actionbar  I use it because it is used inside Theme AppCompat Light NoActionBar  you can check Theme AppCompat Light NoActionBar code   I think there are some missing case that I don t know-- gt       lt item name  windowActionBar  gt false lt  item gt       lt  --this property is used for hiding StatusBar-- gt       lt item name  android windowFullscreen  gt true lt  item gt   lt  style gt    To hide the system navigation bar  public class MainActivity extends AppCompatActivity        protected void onCreate Bundle savedInstanceState            getWindow   getDecorView   setSystemUiVisibility View SYSTEM UI FLAG HIDE NAVIGATION           setContentView R layout activity main                         II  Your main app theme is Theme AppCompat Light NoActionBar  For hide ActionBar   StatusBar style xml   lt style name  AppTheme  parent  Theme AppCompat Light NoActionBar  gt           lt  style gt    lt style name  FullScreenTheme  parent  AppTheme  gt       lt  --don t need any config for hide ActionBar because our apptheme is NoActionBar-- gt       lt  --this property is use for hide StatusBar-- gt       lt item name  android windowFullscreen  gt true lt  item gt       lt  style gt    To hide the system navigation bar  Similar like Theme AppCompat Light DarkActionBar    Demo

User · Answer

getWindow   addFlags View SYSTEM UI FLAG LAYOUT FULLSCREEN

User · Answer

To make your activity full screen do this          add following lines before setContentView        to hide toolbar                 if getSupportActionBar    null                      getSupportActionBar   hide          to hide status bar                 getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN                      WindowManager LayoutParams FLAG FULLSCREEN     This will hide the toolbar and status bar   But In some case  you may want to show status bar with a transparent background  in that case  do this      add following lines before setContentView    to hide toolbar if getSupportActionBar    null     getSupportActionBar   hide       to make status bar transparent getWindow   setFlags WindowManager LayoutParams FLAG LAYOUT NO LIMITS  WindowManager LayoutParams FLAG LAYOUT NO LIMITS     Some other alternate to hide toolbar instead of  getSupportActionBar   hide      Remove toolbar by changing the app theme s parent      lt style name  AppTheme  parent  Theme AppCompat NoActionBar  gt    If you want to remove the toolbar from only one activity then go to manifest  under activity tag add this  android theme   style Theme AppCompat Light NoActionBar    For kotlin lovers  why not use extension functions   For first case   fun AppCompatActivity makeItFullScreenStatusBarVisible        supportActionBar  hide       window setFlags WindowManager LayoutParams FLAG LAYOUT NO LIMITS  WindowManager LayoutParams FLAG LAYOUT NO LIMITS      And call this before setContentView   makeItFullScreenStatusBarVisible     For Second One   fun AppCompatActivity makeItFullScreenStatusBarHidden        supportActionBar  hide       window setFlags WindowManager LayoutParams FLAG FULLSCREEN  WindowManager LayoutParams FLAG FULLSCREEN      And call it before setContentView   makeItFullScreenStatusBarHidden

User · Answer

In AndroidManifest xml file    lt activity     android name   Launch      android label   string app name      android theme   android style Theme NoTitleBar Fullscreen   gt   lt  -- This line is important -- gt        lt intent-filter gt           lt action android name  android intent action MAIN    gt           lt category android name  android intent category LAUNCHER    gt       lt  intent-filter gt   lt  activity gt      Or in Java code   protected void onCreate Bundle savedInstanceState       requestWindowFeature Window FEATURE NO TITLE       getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN  WindowManager LayoutParams FLAG FULLSCREEN

User · Answer

It worked for me   if  Build VERSION SDK INT  lt  16            getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN                  WindowManager LayoutParams FLAG FULLSCREEN         else           View decorView   getWindow   getDecorView            int uiOptions   View SYSTEM UI FLAG FULLSCREEN          decorView setSystemUiVisibility uiOptions

User · Answer

First you must to set you app theme with  NoActionBar  like below   lt  -- Application theme  -- gt   lt style name  AppTheme  parent   style Theme AppCompat Light NoActionBar    gt    Then add these lines in your fullscreen activity   public class MainActiviy extends AppCompatActivity        Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           requestWindowFeature Window FEATURE NO TITLE           this getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN                                    WindowManager LayoutParams FLAG FULLSCREEN           setContentView R layout main             It will hide actionbar toolbar and also statusbar in your fullscreen activity

User · Answer

If you don t want to use the theme  android style Theme NoTitleBar Fullscreen because you are already using a theme of you own  you can use android windowFullscreen   In AndroidManifest xml    lt activity   android name   ui activity MyActivity    android theme   style MyTheme  gt   lt  activity gt    In styles xml    lt style name  MyTheme   parent  your parent theme  gt     lt item name  android windowNoTitle  gt true lt  item gt     lt item name  android windowFullscreen  gt true lt  item gt    lt  style gt

User · Answer

Try this with appcompat from style xml  It provides support for all platforms    lt  -- Application theme  -- gt   lt style name  AppTheme FullScreen  parent  AppTheme  gt       lt item name  android windowFullscreen  gt true lt  item gt   lt  style gt     lt  -- Application theme  -- gt   lt style name  AppTheme  parent   style Theme AppCompat Light NoActionBar    gt

User · Answer

I wanted to use my own theme instead of using  android style Theme NoTitleBar Fullscreen  But it wasn t working as some post on here had mentioned  so I did some tweaking to figure it out   In AndroidManifest xml    lt activity     android name   ui activity MyActivity      android theme   style MyTheme  gt   lt  activity gt    In styles xml    lt style name  MyTheme  gt       lt item name  android windowNoTitle  gt true lt  item gt       lt item name  android windowActionBar  gt false lt  item gt       lt item name  windowNoTitle  gt true lt  item gt       lt item name  windowActionBar  gt false lt  item gt       lt item name  android windowFullscreen  gt true lt  item gt   lt  style gt    Note  in my case I had to use name  windowActionBar  instead of name  android windowActionBar  before it worked properly  So I just used both to make sure in the case I need to port to a new Android version later

User · Answer

KOTLIN  Following the google doc  there is a easy way     override fun onWindowFocusChanged hasFocus  Boolean    super onWindowFocusChanged hasFocus  if  hasFocus  hideSystemUI       private fun hideSystemUI        Enables regular immersive mode     For  lean back  mode  remove SYSTEM UI FLAG IMMERSIVE     Or for  sticky immersive   replace it with SYSTEM UI FLAG IMMERSIVE STICKY window decorView systemUiVisibility    View SYSTEM UI FLAG IMMERSIVE            Set the content to appear under the system bars so that the            content doesn t resize when the system bars hide and show          or View SYSTEM UI FLAG LAYOUT STABLE         or View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION         or View SYSTEM UI FLAG LAYOUT FULLSCREEN            Hide the nav bar and status bar         or View SYSTEM UI FLAG HIDE NAVIGATION         or View SYSTEM UI FLAG FULLSCREEN              Shows the system bars by removing all the flags    except for the ones that make the content appear under the system bars  private fun showSystemUI     window decorView systemUiVisibility     View SYSTEM UI FLAG LAYOUT STABLE         or View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION         or View SYSTEM UI FLAG LAYOUT FULLSCREEN            Google docs

User · Answer

If your using AppCompat and ActionBarActivity  then use this  getSupportActionBar   hide

User · Answer

Override public void onConfigurationChanged Configuration newConfig        super onConfigurationChanged newConfig       adjustFullScreen newConfig       Override public void onWindowFocusChanged boolean hasFocus        super onWindowFocusChanged hasFocus       if  hasFocus            adjustFullScreen getResources   getConfiguration             private void adjustFullScreen Configuration config        final View decorView   getWindow   getDecorView        if  config orientation    Configuration ORIENTATION LANDSCAPE            decorView 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         else           decorView setSystemUiVisibility View SYSTEM UI FLAG LAYOUT STABLE

User · Answer

Here is an example code  You can turn on off flags to hide show specific parts      public static void hideSystemUI Activity activity        View decorView   activity getWindow   getDecorView        decorView setSystemUiVisibility              View SYSTEM UI FLAG LAYOUT STABLE                       View SYSTEM UI FLAG LAYOUT FULLSCREEN                         View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION                         View SYSTEM UI FLAG HIDE NAVIGATION                       View SYSTEM UI FLAG FULLSCREEN    hide status bar                       View SYSTEM UI FLAG IMMERSIVE       Then  you reset to the default state     public static void showSystemUI Activity activity        View decorView   activity getWindow   getDecorView        decorView setSystemUiVisibility              View SYSTEM UI FLAG LAYOUT STABLE                       View SYSTEM UI FLAG LAYOUT HIDE NAVIGATION                       View SYSTEM UI FLAG LAYOUT FULLSCREEN       You can call the above functions from your onCreate    Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout course activity       UiUtils hideSystemUI this

User · Answer

Inside styles xml      lt  -- No action bar -- gt   lt style name  NoActonBar  parent  Theme AppCompat Light NoActionBar  gt       lt  -- Theme customization  -- gt       lt item name  colorPrimary  gt  000 lt  item gt       lt item name  colorPrimaryDark  gt  444 lt  item gt       lt item name  colorAccent  gt  999 lt  item gt       lt item name  android windowFullscreen  gt true lt  item gt   lt  style gt    This worked for me  Hope it ll help you

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