Fullscreen Activity in Android?

Question

How do I make an activity full screen? I mean without the notification bar. Any ideas?

Answer 1

AndroidManifest.xml

I. Your main app the theme is Theme.AppCompat.Light.DarkActionBar

For hide ActionBar / StatusBar
style.xml

To hide the system navigation bar

public class MainActivity extends AppCompatActivity {

    protected void onCreate(Bundle savedInstanceState) {
        getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
        setContentView(R.layout.activity_main)
        ...
    }
 }

II. Your main app theme is Theme.AppCompat.Light.NoActionBar

For hide ActionBar / StatusBar
style.xml

To hide the system navigation bar

Similar like Theme.AppCompat.Light.DarkActionBar.

Demo