How to hide action bar before activity is created and then show it again

Question

I need to implement splash screen in my honeycomb app  I use this code in activity s onCreate to show splash   setContentView R layout splash   getActionBar   hide      and this code to show main UI after sometime   setContentView R layout main   getActionBar   show      But before onCreate is called and splash appears  there is small amount of time when action bar shown   How can I make action bar invisible   I tried to apply theme to activity without action bar    lt item name  android windowActionBar  gt false lt  item gt    but in that case getActionBar   always returns null and I found no way to show it again

User · Answer

Put your splash screen in a separate activity and use startActivityForResult from your main activity's onCreate method to display it. This works because, according to the docs:

As a special case, if you call startActivityForResult() with a requestCode >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your activity, then your window will not be displayed until a result is returned back from the started activity. This is to avoid visible flickering when redirecting to another activity.

You should probably do this only if the argument to onCreate is null (indicating a fresh launch of your activity, as opposed to a restart due to a configuration change).

User · Answer

Clerics solution works  But this appears to also be an issue with some of googles native apps  googles  play store  talk  Also other big apps like skype   EDIT  Bellow solution have given me problem for actionbarsherlock on api  lt  4 0  the reason being setTheme doesn t work pre ice cream sandwich  Add following in your manifest within you application or activity tags   android theme   style Theme NoActionBar    And then in your main activity          Set theme     setTheme R style YOUR THEME       getSupportActionBar   setTitle R string title           Start regular onCreate       super onCreate savedInstanceState       setContentView R layout activity main

User · Answer

Setting android windowActionBar  false  truly disables the ActionBar but then  as you say  getActionBar    returns null  This is solved by   public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       getWindow   requestFeature Window FEATURE ACTION BAR       getActionBar   hide         setContentView R layout splash      be sure you call this AFTER requestFeature   This creates the ActionBar and immediately hides it before it had the chance to be displayed   But now there is another problem  After putting windowActionBar  false  in the theme  the Activity draws its normal Window Title instead of an ActionBar  If we try to avoid this by using some of the   NoTitleBar stock themes or we try to put  lt item name  android windowNoTitle  gt true lt  item gt  in our own theme  it won t work  The reason is that the ActionBar depends on the Window Title to display itself - that is the ActionBar is a transformed Window Title  So the trick which can help us out is to add one more thing to our Activity theme xml    lt item name  android windowActionBar  gt false lt  item gt   lt item name  android windowTitleSize  gt 0dp lt  item gt    This will make the Window Title with zero height  thus practically invisible    In your case  after you are done with displaying the splash screen you can simply call   setContentView R layout main   getActionBar   show      and you are done  The Activity will start with no ActionBar flickering  nor Window Title showing   ADDON  If you show and hide the ActionBar multiple times maybe you have noticed that the first showing is not animated  From then on showing and hiding are animated  If you want to have animation on the first showing too you can use this   protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       requestWindowFeature Window FEATURE ACTION BAR           delaying the hiding of the ActionBar     Handler h   new Handler        h post new Runnable                   Override         public void run                 getActionBar   hide                        The same thing can be achieved with   protected void onPostResume         super onPostResume        getActionBar   hide      but it may need some extra logic to check if this is the first showing of the Activity   The idea is to delay a little the hiding of the ActionBar  In a way we let the ActionBar be shown  but then hide it immediately  Thus we go beyond the first non-animated showing and next showing will be considered second  thus it will be animated   As you may have guessed there is a chance that the ActionBar could be seen before it has been hidden by the delayed operation  This is actually the case  Most of the time nothing is seen but yet  once in a while  you can see the ActionBar flicker for a split second   In any case this is not a pretty solution  so I welcome any suggestions   Addition for v7 support actionbar user  the code will be   getWindow   requestFeature Window FEATURE ACTION BAR   getSupportActionBar   hide

User · Answer

Just add this in your styles xml   lt item name  android windowNoTitle  gt true lt  item gt

User · Answer

In case you have null because you are using the support library  instead of getActionBar   you need to call getSupportActionBar

User · Answer

this is the best way I used Go to java file  after onCreate    Override     protected void onCreate Bundle savedInstanceState                  super onCreate savedInstanceState            setContentView R layout activity main                Take instance of Action Bar             using getSupportActionBar and             if it is not Null             then call hide function          if  getSupportActionBar      null                 getSupportActionBar   hide

User · Answer

Best result to me was to create an activity with ThemeNoTitleBar and without content as launcher  Then this activity call directly to the other    Of course if you want you can add content to the Splash Activity but in my case I just wanted to show application directly   Manifest    lt activity         android name  com package SplashActivity          android theme   android style Theme Black NoTitleBar   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    Activity   public class SplashActivity extends Activity    Override protected void onCreate Bundle savedInstanceState       super onCreate savedInstanceState          start StartActivity     Intent intent   new Intent this  StartActivity class       startActivity intent       finish

User · Answer

If you use one Activity included a splash screen  then you can do this if you use SherlockActionBar  getSupportActionBar   hide      After the splash screen you can show it again with      getSupportActionBar   show      It should be the same with native ActionBar of Android

User · Answer

Actually  you could simply set splash Activity with NoActionBar  and set your main activity with action bar

User · Answer

The best way I find after reading all the available options is set main theme without ActionBar and then set up MyTheme in code in parent of all Activity   Manifest    lt application             android theme   android style Theme Holo Light NoActionBar      gt    BaseActivity   public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setTheme R style GreenHoloTheme       This way helps me to avoid ActionBar when application start

User · Answer

Just add this to your MainActivity in the onCreate function   val actionBar   supportActionBar  apply   hide

User · Answer

I was also trying to hide Action Bar on Android 2 2  but none of these solution worked  Everything ends with a crash  I checked the DDMS LOg  It was telling me to use  Theme AppCompat  At last I Solved the problem by changing the android theme   android style Theme Holo Light NoActionBar Line  into android theme   style Theme AppCompat NoActionBar and it worked  but the the Interface was dark   then i tried android theme   style Theme AppCompat Light NoActionBar  and finally got what i wanted   After that when I Searched about  AppCompat  on Developer Site I got This    So I think the Solution for Android 2 2 is   lt activity     android name   MainActivity      android theme   style Theme AppCompat Light NoActionBar   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    And Sorry for my bad English Like Always

User · Answer

you can use this    getSupportActionBar   hide    if it doesn t work try this one    getActionBar   hide      if above doesn t work try like this    in your directory   res values style xml   open style xml -  there is attribute parent change to parent  Theme AppCompat Light DarkActionBar   if all of it doesn t work too  i don t know anymore  but for me it works

User · Answer

For Splashscreen you should use this line in manifest and don t use getActionBar     lt item name  android windowActionBar  gt false lt  item gt    and once when Splash Activity is finished in the main Activity use below or nothing   lt item name  android windowActionBar  gt true lt  item gt

User · Answer

I realise that posting links are not the best way to do things  but I highly recommend you read the following documentation from Google themselves  This is the official android doc on how to control your system ui  things like actionbar  nav bar etc   Unfortunately the info is too much to post directly   but after reading this you will understand exactly how to show and hide features no matter what version you are developing for  its so simple   Incase the link ever changes  it can be found under the official android documentation under training -  getting started -  Best practices for user interface -  managing the system ui  https   developer android com training system-ui index html

User · Answer

best and simple  requestWindowFeature Window FEATURE NO TITLE    getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN                  WindowManager LayoutParams FLAG FULLSCREEN

User · Answer

The solutions already posted came with the sideffect  that the first  show   call did not animate the ActionBar for me  I got another nice solution  which fixed that   Create a transparent drawable - something like that     lt shape xmlns android  http   schemas android com apk res android  gt       lt solid        android color   00000000    gt   lt  shape gt     Set the actual actionbar background to a invisible custom view which you set on the actionbar    getSupportActionBar   setCustomView R layout actionbar custom layout         getSupportActionBar   setDisplayOptions ActionBar DISPLAY SHOW CUSTOM                ActionBar DISPLAY SHOW CUSTOM   ActionBar DISPLAY SHOW HOME   ActionBar DISPLAY SHOW TITLE      Set the transparent background for the actionbar in onCreate   getSupportActionBar   setBackgroundDrawable getResources   getDrawable R drawable background transparent      Imortant  Don t hide the actionbar immediately in onCreate  but with a little delay later - e g  when the layout is finished with creation   getWindow   getDecorView   getViewTreeObserver   addOnGlobalLayoutListener new OnGlobalLayoutListener                      Override                 public void onGlobalLayout                         getSupportActionBar   hide                                        Before your first  show   call set the custom view visible     actionbarRoot setVisibility View VISIBLE   getSupportActionBar   show

User · Answer

If you are using ActionBarSherlock  then use Theme Sherlock NoActionBar Theme in your Activity    lt activity      android name   SplashScreenActivity      android theme   style Theme Sherlock NoActionBar  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

User · Answer

The best way to do this is two make the first activity as blank activity and the content you want to put and then after some time fire another activity  By following this way you can make the first activity as your splash screen without action bar or anything  Heres my first activity  package com superoriginal rootashadnasim syllabus   import android content Intent  import android os Handler  import android support v7 app AppCompatActivity  import android os Bundle   public class first screen extends AppCompatActivity       Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity first screen         final Handler h new Handler        h postDelayed new Runnable              Override         public void run                 Intent intent new     Intent getApplicationContext   DrawerChooseBranchMainActivity class               startActivity intent                   2000          After that you can put any of your activity as first activity If you want no action bar in any screen then just add this in your styles       lt item name  windowActionBar  gt false lt  item gt       lt item name  windowNoTitle  gt true lt  item gt

User · Answer

Create two styles    lt style name  AppThemeNoBar  parent  Theme AppCompat Light  gt        lt item name  android windowNoTitle  gt true lt  item gt   lt  style gt    lt style name  AppThemeBar  parent  Theme AppCompat Light  gt       lt item name  android windowNoTitle  gt false lt  item gt   lt  style gt    Set AppThemeNoBar as application theme and AppThemeBar to the activity where you want to show the ActionBar   Using two styles you wont see the Action bar while views are loading    Check this link Android  hide action bar while view load

User · Answer

2015  using support v7 library with AppCompat theme  set this theme for your Activity    lt style name  AppTheme AppStyled  parent  Theme AppCompat Light DarkActionBar  gt       lt item name  colorPrimaryDark  gt  color md indigo 100 lt  item gt       lt item name  colorPrimary  gt  color md indigo 500 lt  item gt       lt item name  colorAccent  gt  color md red 500 lt  item gt       lt item name  android textColorPrimary  gt  color md white 1000 lt  item gt       lt item name  android textColor  gt  color md purple 500 lt  item gt       lt item name  android textStyle  gt bold lt  item gt       lt item name  windowNoTitle  gt true lt  item gt       lt item name  windowActionBar  gt false lt  item gt   lt  style gt

User · Answer

Try this  it works for me   Below gets rid of activity s title bar   requestWindowFeature Window FEATURE NO TITLE     Below eliminates the notification bar to make the activity go full-screen   getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN           WindowManager LayoutParams FLAG FULLSCREEN      Full Example Below  Take note  These methods were called before we set the content view of our activity   Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState               Sets Application to full screen by removing action bar         requestWindowFeature Window FEATURE NO TITLE               getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN           WindowManager LayoutParams FLAG FULLSCREEN            setContentView R layout activity main                without this check  we would create a new fragment at each orientation change          if  null    savedInstanceState              createFragment

User · Answer

Using this simple code in your  class file to hide action bar  getSupportActionBar   hide

User · Answer

Android studio provide in build template for full screen  if you use Android studio you can follow below step to implement full screen activity       Done  Android studio did your job  now you can check code for full screen

User · Answer

this may be handy add this to your manifest   android theme   android style Theme Light NoTitleBar     cheers

User · Answer

I had still error with null pointer and finally it helped when I called first getWindow   requestFeature   and then super onCreate     public void onCreate Bundle savedInstanceState    getWindow   requestFeature Window FEATURE ACTION BAR   super onCreate savedInstanceState   getActionBar   show

User · Answer

Hi I have a simple solution by using 2 themes   Splash screen theme  add it to the manifest       lt style name  SplashTheme  parent   android style Theme Holo NoActionBar  gt       lt item name  android windowBackground  gt  color red lt  item gt   lt  style gt  normal theme  add it in your activity by setTheme R style Theme      lt style name  Theme  parent   style Theme Holo  gt   lt item name  android windowBackground  gt  color blue lt  item gt   lt  style gt    To support SDK 10    Override     public void onCreate Bundle savedInstanceState         setTheme R style Theme             super onCreate savedInstanceState

[android] How to hide action bar before activity is created, and then show it again?

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