title: How to get view from drawer header layout with binding in activity?
body: <p>So this is my activity_main.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;layout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:app="http://schemas.android.com/apk/res-auto"
          xmlns:tools="http://schemas.android.com/tools"
          tools:context="MainActivity"
      &gt;
      &lt;!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. --&gt;
      &lt;android.support.v4.widget.DrawerLayout
          android:id="@+id/drawer_layout"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          &gt;
  
          &lt;!-- As the main content view, the view below consumes the entire
               space available using match_parent in both dimensions. --&gt;
  
          &lt;RelativeLayout
              android:layout_width="match_parent"
              android:layout_height="match_parent"&gt;
  
              &lt;LinearLayout
                  android:id="@+id/ll_container"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:orientation="vertical"&gt;
  
                  &lt;android.support.v7.widget.Toolbar
                      android:id="@+id/my_awesome_toolbar"
                      android:layout_width="match_parent"
                      android:layout_height="wrap_content"
                      android:background="@android:color/black"
                      android:fitsSystemWindows="true"
                      &gt;
  
                      &lt;TextView
                          android:id="@+id/toolbar_title"
                          android:layout_width="wrap_content"
                          android:layout_height="wrap_content"
                          android:layout_marginLeft="10dp"
                          android:layout_marginStart="10dp"
                          android:textColor="@android:color/white"
                          android:textSize="@dimen/abc_text_size_title_material_toolbar"
                          tools:text="@string/default_toolbar_title"/&gt;
  
                  &lt;/android.support.v7.widget.Toolbar&gt;
  
  
                  &lt;FrameLayout
                      android:id="@+id/container"
                      android:layout_width="match_parent"
                      android:layout_height="match_parent"&gt;
  
                  &lt;/FrameLayout&gt;
              &lt;/LinearLayout&gt;
  
              &lt;android.support.design.widget.FloatingActionButton
                  android:id="@+id/fab_fuf"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_alignParentBottom="true"
                  android:layout_alignParentEnd="true"
                  android:layout_alignParentRight="true"
                  android:layout_marginBottom="20dp"
                  android:layout_marginEnd="20dp"
                  android:layout_marginRight="20dp"
                  android:src="@drawable/flamme"
                  app:fabSize="normal"
                  /&gt;
          &lt;/RelativeLayout&gt;
  
          &lt;android.support.design.widget.NavigationView
              android:id="@+id/navigation_view"
              android:layout_width="wrap_content"
              android:layout_height="match_parent"
              android:layout_gravity="start"
              android:background="@android:color/black"
              **app:headerLayout="@layout/drawer_header"**
              app:itemTextColor="@color/drawer_item_color_selector"
              app:menu="@menu/menu_drawer"/&gt;
  
      &lt;/android.support.v4.widget.DrawerLayout&gt;
  &lt;/layout&gt;
  </code></pre>
  
  <p>and I am using binding for the activity so I don't have to use the findViewById and cast it etc.. like this: </p>
  
  <pre><code>ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
  
          Toolbar toolbar = binding.myAwesomeToolbar;
          toolbarTitle = binding.toolbarTitle;
          BalrogFontsHelper.SetKhandBoldToView(toolbarTitle);
          setSupportActionBar(toolbar);
          final ActionBar actionBar = getSupportActionBar();
          if (actionBar != null) {
              actionBar.setHomeAsUpIndicator(R.drawable.ic_dehaze_white_24);
              actionBar.setDisplayHomeAsUpEnabled(true);
              actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
              actionBar.setDisplayShowTitleEnabled(false);
          }
  
  
          drawerLayout = binding.drawerLayout;
          **tvLoggedUserEmail = (TextView) findViewById(R.id.tv_logged_user_email);**
          BalrogFontsHelper.SetKhandBoldToView(tvLoggedUserEmail);
  </code></pre>
  
  <p>As you can see, I can get the views that are directly in the activity_main.xml layout by binding but when the view I am trying to get is not there I can't see the variable in the binding object.</p>
  
  <p>drawer_header.xml:</p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
  
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                  android:layout_width="match_parent"
                  android:layout_height="96dp"
                  xmlns:tools="http://schemas.android.com/tools"
                  android:background="@android:color/black"
                  android:theme="@style/ThemeOverlay.AppCompat.Dark"&gt;
  
  
      &lt;TextView
          android:id="@+id/tv_logged_user_email"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_centerVertical="true"
          android:layout_marginLeft="16dp"
          tools:text="@string/login_placeholder_email"
          android:textAllCaps="true"
          android:textAppearance="@style/TextAppearance.AppCompat.Body2"
          android:textSize="20sp"/&gt;
  
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>How could I get this tv_logged_user_email TextView in a binding way so I have:</p>
  
  <pre><code>**tvLoggedUserEmail = binding.tvLoggedUserEmail;**
  </code></pre>