Android: Making a Fullscreen Application

Android: making a fullscreen application

You are getting this problem because the activity you are trying to apply the android:theme="@android:style/Theme.Holo.Light.NoActionBar.Fullscreen"> to is extending ActionBarActivity which requires the AppCompat theme to be applied.

Extend your activity from Activity rather than from ActionBarActivity

You might have to change your Java class accordingly little bit.

If you want to remove status bar too then use this before setContentView(layout) in onCreateView method

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

How to Make my Android App FullScreen via Android Manifest?

Go into the manifest and use a full screen theme.

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

Fullscreen App With DisplayCutout

I finally found out why. For some strange reason, the application won't enter the if condition:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
    // It never gets here
}

I removed that if condition and the activity finally goes fullscreen correctly.

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Here are the bare minimum codes required to render the activity fullscreen.

Activity:

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // or add <item name="android:windowTranslucentStatus">true</item> in the theme
        window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)

        val attrib = window.attributes
        attrib.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
    }
}

Styles:

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

    <!-- Adding fullscreen will just hide the status bar -->
    <!-- <item name="android:windowFullscreen">true</item> -->
</style>

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

How to make a FullScreen Activity on Android

Well turns out there is a simple solution to the problem. I just needed to make the status bar and navigation bar transparent.

Post API 21 we can do it programmatically like this -

getWindow().setStatusBarColor(Color.TRANSPARENT);

for making it work on lower android versions, I just needed to add the transparency via xml in the /res/values-v21/styles.xml

<item name="android:statusBarColor">@android:color/transparent</item>

Here's the final effect

Programmatically make app FULL SCREEN in Android

add two lines...

requestWindowFeature(Window.FEATURE_NO_TITLE); 
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);

Android - Making activity full screen with status bar on top of it

I know that the guy asking the question may have found his own solution but for the people who are still looking for a solution this is a very simple solution but one thing it has a limitation till Kitkat so a condition is added

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
                      WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}

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