title: onClick listener is not working for custom drawer layout
body: <p>My NavigationView XML is :</p>
  
  <pre><code>&lt;android.support.design.widget.NavigationView
          android:id="@+id/nav_view"
          android:layout_width="wrap_content"
          android:layout_height="match_parent"
          android:layout_gravity="start"
          android:fitsSystemWindows="true"
          android:background="@drawable/drawer_img"
           &gt;
          &lt;include layout="@layout/nav_header_navigation" /&gt; &lt;/android.support.design.widget.NavigationView&gt;
  </code></pre>
  
  <p>and my java code is:</p>
  
  <pre><code>TextView tv_inicio = (TextView)findViewById(R.id.home_inicio);
               tv_inicio.setOnClickListener(new View.OnClickListener() {
  
                  @Override
                  public void onClick(View view) {
                      System.out.println("Home Incio Clicked .");
                  }
              });
  </code></pre>
  
  <p>OnClick Listener not working.. Only this appeared in debug mode 
  "D/ViewRootImpl: ViewPostImeInputStage ACTION_DOWN"
  My Header Layout is which i am including in navigation View.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_gravity="center_horizontal"
      android:orientation="vertical"
      android:id="@+id/frame_layout"
      &gt;
      &lt;ImageView
          android:id="@+id/imageView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginTop="20dp"
          android:layout_centerHorizontal="true"
          android:paddingTop="@dimen/nav_header_vertical_spacing"
          android:layout_weight="1"
          android:layout_gravity="center_horizontal"
          android:src = "@drawable/menu_logo_03" /&gt;
      &lt;ScrollView
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:layout_marginTop="130dp"
          &gt;
          &lt;LinearLayout
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:orientation="vertical"
              android:layout_gravity="center_horizontal"
             &gt;
              &lt;TextView
                  android:id="@+id/home_inicio"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_marginTop="0dp"
                  android:drawableLeft="@drawable/inicio"
                  android:layout_gravity="center|center_horizontal"
                  /&gt;
              &lt;TextView
                  android:id="@+id/enventos"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/eventos"
                  android:layout_gravity="center"
                  /&gt;
              &lt;TextView
                  android:id="@+id/dm_menu"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/dm"
                  android:layout_gravity="center"
                  /&gt;
              &lt;TextView
                  android:id="@+id/barrios"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/barrios"
                   /&gt;
              &lt;TextView
                  android:id="@+id/gremios"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/gremios"
                  /&gt;
              &lt;TextView
                  android:id="@+id/proyectos"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/proyectos"
                   /&gt;
              &lt;TextView
                  android:id="@+id/daniel_medios"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/danielme"
                   /&gt;
              &lt;TextView
                  android:id="@+id/conoce"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/conoce"
                 /&gt;
              &lt;TextView
                  android:id="@+id/radio"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:layout_marginTop="20dp"
                  android:drawableLeft="@drawable/radio"
                   /&gt;
          &lt;/LinearLayout&gt;
      &lt;/ScrollView&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Code is Running and I am able to get ids of these textviews. but onClick Listener not working..</p>
  
  <p>Any Help will be appreciated.</p>