title: How to remove navbar completely in my app?
body: <p>I am creating an android app so that the nav bar and title bar needs to be hidden. I am able to do that from activity as explained in developer.android.com.</p>
  
  <p>But I need to achieve this in whole my application by defining it only once. </p>
  
  <p>From some forum that the below code will do that:</p>
  
  <pre><code> &lt;style name="FullScreen" parent="@style/Theme.AppCompat.Light.NoActionBar"&gt;
          &lt;item name="colorPrimary"&gt;@color/colorPrimary&lt;/item&gt;
          &lt;item name="colorPrimaryDark"&gt;@color/colorPrimaryDark&lt;/item&gt;
          &lt;item name="colorAccent"&gt;@color/colorAccent&lt;/item&gt;
          &lt;item name="android:windowNoTitle"&gt;true&lt;/item&gt;
          &lt;item name="android:windowActionBar"&gt;false&lt;/item&gt;
          &lt;item name="android:windowFullscreen"&gt;true&lt;/item&gt;
          &lt;item name="android:windowContentOverlay"&gt;@null&lt;/item&gt;
      &lt;/style&gt;
  </code></pre>
  
  <p>I applied this style to my manifest and bang, the title bar is gone.. But sadly the nav bar remains.. How could we remove navbar too like this??</p>
  
  <p>Please help</p>