android:theme=“@android:style/Theme.NoTitleBar.Fullscreen” works on Application level but not at the activity level. Any clue?

Question

I need to make one of my activities called MyNoStatusBarActivity.java a full-screen activity.

I have added in the Manifest :

Answer 1

This will do the trick:

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);

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

    setContentView(R.layout.activity_main);
}