title: Hide toolbar at focus EditText issue
body: <p>I'm using android.support.v7.widget.Toolbar in my application in a chat activity. But as soon as EditText focus and keyboard open, toolbar gets hide.</p>
  
  <p>This is my xml code:
  app_bar.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.v7.widget.Toolbar 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="?android:attr/actionBarSize"
  android:background="@color/primaryColor"
  android:minHeight="?attr/actionBarSize"
  app:theme="@style/myCustomToolBarTheme"
  app:popupTheme="@style/ThemeOverlay.AppCompat.Dark" &gt;
  
  &lt;/android.support.v7.widget.Toolbar&gt;
  </code></pre>
  
  <p>activity.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="match_parent"
  android:background="#ccc"
  android:orientation="vertical" &gt;
  
  &lt;include
      android:id="@+id/app_bar"
      layout="@layout/app_bar" /&gt;
  
      &lt;RelativeLayout
          android:layout_width="match_parent"
          android:layout_height="fill_parent"
          android:layout_below="@+id/app_bar" &gt;
  
          &lt;ListView
              android:id="@+id/my_list"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"/&gt;
  
          &lt;EditText
              android:id="@+id/editText1"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:layout_alignParentBottom="true"
              android:ems="10" &gt;
  
              &lt;requestFocus /&gt;
          &lt;/EditText&gt;
      &lt;/RelativeLayout&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Output Screens: </p>
  
  <p><img src="https://i.stack.imgur.com/RVwwJ.png" alt="enter image description here">
  <img src="https://i.stack.imgur.com/QSm77.png" alt="enter image description here"></p>
  
  <p>Please help me.</p>