Fullscreen Activity in Android

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

Android full screen on only one activity?

As onWindowsFocusChanged() is what you need so try this:

1. First, Declare this variable as global in your MainActivity

private int currentApiVersion;

2. then paste this code in onCreate() of that activity.

currentApiVersion = Build.VERSION.SDK_INT;
final int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
        | View.SYSTEM_UI_FLAG_FULLSCREEN
        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
if (currentApiVersion >= Build.VERSION_CODES.KITKAT) {
    getWindow().getDecorView().setSystemUiVisibility(flags);
    final View decorView = getWindow().getDecorView();
    decorView.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
          @Override
          public void onSystemUiVisibilityChange(int visibility) {
              if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
                   decorView.setSystemUiVisibility(flags);
              }
          }
    });
}

3. Now paste this method in your MainActivity class.

@SuppressLint("NewApi")
@Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    if (currentApiVersion >= Build.VERSION_CODES.KITKAT && hasFocus) {
        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_FULLSCREEN
             | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
             | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
    }
 }

Now this should work, give it a try.

Using full screen Activity

Try this to set activity to fullscreen:

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
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);

You can put this code in onCreate() method

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

Sample Image

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);

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);
}

android activity hide too bar, full screen

getSupportActionBar().hide();

works.

Additional explaination, my class is an extension of AppCompatActivity, below is the code.

    @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            Logger.d(SdkMainActivity.class, "onCreate");
            getSupportActionBar().hide();    //---> this works

    //requestWindowFeature(Window.FEATURE_NO_TITLE);    //getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);   // ---> this the toolbar still appear

            setContentView(R.layout.activity_sdk_main);

}

Android - Full Screen without moving the content

Using RelativeLayout instead of CoordinatorLayout as a root layout I can avoid toolbar pushes the content but it pushes a little bit when I hide the status bar.

Now your issue is that the status bar pushes the activity content down when it's shown.

So, to solve this you can make the status bar overlapping with the activity window by adding the below to the activity's onCreate() method

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, 
                         WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}

UPDATE

what to use if build SDK is lower than kitkat?

To support APIs below Kitkat try to create a style.xml file for (v-19) qualifier, and add the below attributes

<item name="android:windowTranslucentStatus">true</item> 
<item name="android:windowTranslucentNavigation">true</item>

UPDATE: using custom ActionBar

Layout:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#000000">

        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:scrollbars="vertical"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintTop_toTopOf="parent">

            <TextView
                android:id="@+id/content"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:clickable="true"
                android:focusable="true"
                android:text="@string/long_text"
                android:textColor="@android:color/white" />

        </ScrollView>

    </androidx.constraintlayout.widget.ConstraintLayout>

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:animateLayoutChanges="true"
        android:background="#9E0557B5"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    </com.google.android.material.appbar.AppBarLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

Behavior

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = findViewById(R.id.toolbar);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
                    WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
        }
        setSupportActionBar(toolbar);

        TextView content = findViewById(R.id.content);
        content.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (getSupportActionBar().isShowing()) {
                    getSupportActionBar().hide();
                    showSystemBar(false);
                }
                else {
                    getSupportActionBar().show();
                    showSystemBar(true);
                }
            }
        });
    }

    private void showSystemBar(boolean isDisplayed) {

        int uiOptions;
        if (isDisplayed) {
            // show status bar
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                uiOptions = View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
                getWindow().getDecorView().setSystemUiVisibility(uiOptions);
            }
            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        } else {
            // hide status bar
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
                getWindow().getDecorView().setSystemUiVisibility(uiOptions);
            } else {
                getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

        }

    }

}

Use NoActionBar theme int style.xml

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

Override style.xml (v.19)

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowTranslucentNavigation">true</item>
</style>

Preview

Sample Image

Fullscreen Activity in Android