[android] How to disable action bar permanently

I can hide the action bar in honeycomb using this code:

getActionBar().hide();

But when the keyboard opens, and user copy-pastes anything, the action bar shows again. How can I disable the action bar permanently?

If you just want a theme with no action bar you can use 'NoActionBar' variant, for eg. if your base theme is as below

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

then you can use

<style name="AppThemeNoActionBar" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

But if you want to retain the properties of your main theme i.e. AppTheme you can do as below

<style name="AppThemeNoActionBar" parent="AppTheme">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>

You can retain all the properties of your base theme this way and don't have to explicitly add them in your NoActionBar theme :)

The best way I found which gives custom themes and no action bar, is to create a SuperClass for all activities in my project and in it's onCreate() call the following line of code -

this.requestWindowFeature(Window.FEATURE_NO_TITLE);

It always work for me. The only issue in this approach is, you'll see action bar for a fraction of second when starting the app (Not the activity, the complete app).

You can force hide the action bar simply:

ActionBar  actionbar = getSupportActionBar();
actionbar.hide();

Just use your default theme, it will work good if fullscreen is set

I use the following code inside my onCreate function:

ActionBar actionBar = getSupportActionBar();
actionBar.hide();

Source: https://developer.android.com/guide/topics/ui/actionbar.html

If you are using Theme.Holo.Light and want to use the Theme.Holo.Light.NoActionBar variant on pre 3.2 devices you can add this to your styles.xml:

<style name="NoActionBar" parent="@android:style/Theme.Holo.Light">
    <item name="android:windowActionBar">false</item>
    <item name="android:windowNoTitle">true</item>
</style> 

and then set it as your activity's theme:

<activity android:theme="@style/NoActionBar" ... />

In your activity_main.xml, you can adjust from there in the line:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
.......
    android:theme="@style/Theme.Design.Light.NoActionBar"
.......    
">

Sometimes when you can see things like this Click here, You can select from here the "noActionBar" theme.

Hope me helped you.

Heres a quick solution.

You find styles.xml and you change the base application theme to "Theme.AppCompat.NoActionBar" as shown below.

<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
    <!-- Customize your theme here. -->
</style>

Strangely enough, none of these worked for me when building on a Nexus 7 running 4.4.2 (API 19). For the most part, at least with the latest version of Android Studio (1.2.1.1) after creating a blank activity app, the:

android:theme="@style/AppTheme"

is in the application element, not the activity element. If I removed the above code or tried to change it to:

android:theme="@android:style/Theme.Holo.Light.NoActionBar"

the app won't run...if this is happening to you, just go into your styles.xml file (res > values > styles.xml) and add the .NoTitleBar to the end of the parent like this block:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"></style>

No changes to the AndroidManifest file are needed.

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);
    getSupportActionBar().hide();
}

Go to styles.xml Change this DarkActionBar to NoActionBar

style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

I would like to post rather a Designer approach to this, this will keep design separate from your business logic:

Step 1. Create new style in (res->values->styles.xml) : Basically it is copy of your overall scheme with different parent - parent="Theme.AppCompat.Light.NoActionBar"

<!-- custom application theme. -->
    <style name="MarkitTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimary</item>
        <item name="colorAccent">@color/colorAccent</item>

        <item name="android:windowNoTitle">true</item>
    </style>

Step 2: In your AndroidManifest.xml, add this theme to the activity you want in: e.g. I want my main activity without action-bar so add this like below:

<activity android:name=".MainActivity"
            android:theme="@style/MarkitTheme">

This is the best solution for me after trying a lot of things.

<application
    .
    .
    android:theme="@android:style/Theme.Holo.Light.NoActionBar"
    . >

maybe this help you

Under res -> values ->styles.xml

Change

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">

To

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

With the Android Studio default generated Activity superclass is ActionBarActivity and then, none of solution in other responses works. To solve just change superclass:

public class xxxActivity extends ActionBarActivity{

to:

public class xxxActivity extends Activity {

Make sure you create a new theme by changing the name of the default theme in the styles.xml file to:

 <style name="MyTheme" parent="android:Theme.Material.Light.NoActionBar">

and than change the theme from the drop-down under your main_activity.xml to whatever you called your theme.

Don't use Holo theme and the Actionbar will disappear. This code is working for me on API 8+, with support lib v7:

<style name="NoActionBar" parent="@style/Theme.AppCompat.Light">
<item name="android:windowNoTitle">true</item>
</style>

set that theme for your activity:

<activity android:theme="@style/NoActionBar" ... />

and in your activity class.

It works even when it extends ActionBarActivity.

  protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   android.support.v7.app.ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        actionBar.hide();
    }
    setContentView(R.layout.activity_main);

There are two ways to disable ActionBar in Android.

requestWindowFeature(Window.FEATURE_NO_TITLE); 
setContentView(R.layout.activity_main); 

Use this in styles.xml file:

<style name="MyTheme" parent="@style/Theme.AppCompat.Light.NoActionBar">
        <item name="android:windowActionBar">false</item>
        <item name="android:windowNoTitle">true</item>

I use this solution:

in the manifest, inside your activity tag:

android:label="@string/empty_string"

and in strings.xml:

<string name="empty_string">""</string>

This way you keep ActionBar (or Toolbar) with the title, but when Activity if created the title is automatically empty.

Another interesting solution where you want to retain the ViewPager while removing the action bar is to have a style as show

<style name="AppTheme" parent="AppBaseTheme">
    <item name="android:windowActionBarOverlay">true</item>
    <item name="android:actionBarStyle">@style/NoActionBarStyle</item>
    <item name="android:windowContentOverlay">@null</item>
</style>
<style name="NoActionBarStyle" parent="android:Widget.Holo.ActionBar">
    <item name="android:backgroundSplit">@null</item>
    <item name="android:displayOptions"></item>
</style>

This is the way most of the Dialer applications in android is showing the ViewPager without the action bar.

Ref: https://github.com/CyanogenMod/android_packages_apps_Dialer

Below are the steps for hiding the action bar permanently:

1. Open app/res/values/styles.xml.
2. Look for the style element that is named "apptheme". Should look similar to <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">.

3. Now replace the parent with any other theme that contains "NoActionBar" in its name.

   a. You can also check how a theme looks by switching to the design tab of activity_main.xml and then trying out each theme provided in the theme drop-down list of the UI.

4. If your MainActivity extends AppCompatActivity, make sure you use an AppCompat theme.

try this in your manifist

 <activity
        android:name=".MainActivity"
        android:theme="@android:style/Theme.Holo.NoActionBar"
        android:label="@string/app_name" >

in the onCreate function add the following code

ActionBar actionBar = getSupportActionBar();
actionBar.hide();

and just import android.support.v7.app.ActionBar

Type this code to your onCreate method before setContentView:

requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 0);

If you want to get full screen without actionBar and Title.

Add it in style.xml

<style name="AppTheme.NoActionBar" parent="Theme.AppCompat.Light.DarkActionBar">
      <item name="windowActionBar">false</item>
      <item name="windowNoTitle">true</item>
      <item name="android:windowFullscreen">true</item>
</style>

and use the style at manifest.xml.

android:theme="@style/AppTheme.NoActionBar"