title: action bar is hiding the upper edit text and text view
body: <p>The action bar in my application is hiding the upper edit text and text view. I don't know how to go around this issue. I have pasted the xml layout code below.
  I want to show some menu items in the action bar.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.design.widget.CoordinatorLayout
  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"
  android:layout_width="match_parent"
  android:layout_height="fill_parent"
  android:fitsSystemWindows="true"
  tools:context=".MainActivity" &gt;
  
  &lt;android.support.design.widget.AppBarLayout
      android:layout_height="wrap_content"
      android:layout_width="match_parent"
      android:theme="@style/AppTheme.AppBarOverlay"&gt;
  
      &lt;android.support.v7.widget.Toolbar android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:background="?attr/colorPrimary"
          android:theme="@style/AppTheme"
          android:touchscreenBlocksFocus="false"
          android:visibility="visible" /&gt;
  &lt;/android.support.design.widget.AppBarLayout&gt;
  
  &lt;include layout="@layout/content_main"
      android:layout_height="match_parent"
      android:layout_width="wrap_content" /&gt;
  
  &lt;android.support.design.widget.FloatingActionButton android:id="@+id/fab"
      android:layout_width="wrap_content" android:layout_height="wrap_content"
      android:layout_gravity="bottom|end"         
      android:layout_margin="@dimen/fab_margin"
      android:src="@android:drawable/ic_dialog_email" /&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>