Fullscreen Activity in Android?

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:

<activity android:name=".ActivityName"    android:label="@string/app_name"    android:theme="@android:style/Theme.NoTitleBar.Fullscreen"/>

Edit:

If you are using AppCompatActivity then you need to add new theme

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

and then use it.

<activity android:name=".ActivityName"    android:label="@string/app_name"    android:theme="@style/Theme.AppCompat.Light.NoActionBar.FullScreen"/>

Thanks to https://stackoverflow.com/a/25365193/1646479

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

Example

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:

<activity  android:name=".ui.activity.MyActivity"  android:theme="@style/MyTheme"></activity>

In styles.xml:

<style name="MyTheme"  parent="your parent theme">  <item name="android:windowNoTitle">true</item>  <item name="android:windowFullscreen">true</item> </style>