title: How to refresh the headview content of navigationview in android
body: <p>Hello I am using <code>NavigationView</code> in one the demo project. I have header layout of <code>NavigationView</code>. I am getting data of header layout at the runtime and once I get data I am setting values of views but data is not reflected or refreshed.</p>
  
  <pre><code>((TextView)headerNavigationView.findViewById(R.id.username)).setText(userData.getName());
  </code></pre>
  
  <p>What is the correct way to refresh the navigationview at runtime once we get a data from web service.</p>