title: Android M Light and Dark status bar programmatically - how to make it dark again?
body: <p>In the Android M we have ability to make status bar icons dark. To do that we can specify attribute in the theme's xml:</p>
  
  <pre><code>&lt;item name="android:windowLightStatusBar"&gt;true&lt;/item&gt;
  </code></pre>
  
  <p>OR we cat set it at runtime with this code:</p>
  
  <pre><code>View someView = findViewById(R.id.some_view);
  if (Build.VERSION.SDK_INT &gt;= Build.VERSION_CODES.M) {
      someView.setSystemUiVisibility(someView.getSystemUiVisibility() | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
  }
  </code></pre>
  
  <p>And it actually works fine. But question is how to properly set a status bar mode to dark at runtime?</p>
  
  <p>I already tried these variants:</p>
  
  <pre><code>// Makes status bar mode dark, but also hides it along with all navigation views. 
  someView.setSystemUiVisibility(someView.getSystemUiVisibility() | ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
  
  // Does nothing 
  someView.setSystemUiVisibility(someView.getSystemUiVisibility() &amp; ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
  
  // Also does nothing 
  someView.setSystemUiVisibility(someView.getSystemUiVisibility() ^ View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
  </code></pre>
  
  <p>So how it can be done the right way?</p>