title: Title alignment issue for Android Toolbar
body: <p>I am working with the Toolbar for the first time. I am using it as a Actionbar in my application. </p>
  
  <p>I want to align the Toolbar's title to the center. But i realized that there is no in-built method that allows you to do that. </p>
  
  <p>So i added a textview to the Toolbar as follows-</p>
  
  <pre><code>        &lt;android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:minHeight="?attr/actionBarSize"
          android:background="#2196F3"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"&gt;
          &lt;TextView
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              **android:gravity="center"**
              android:id="@+id/txtTitle"
              android:textColor="@android:color/white"
              android:text="My Title" /&gt;
      &lt;/android.support.v7.widget.Toolbar&gt;
  </code></pre>
  
  <p>However even this approach does not work since the left edge of my toolbar consists of a drawer menu icon. Hence although my text is center aligned in the textview, the Textview itself does not cover the width of the screen. The output is as follows:</p>
  
  <p><a href="https://i.stack.imgur.com/7Yrm3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7Yrm3.png" alt="enter image description here"></a></p>
  
  <p>Any suggestions on how to resolve this?</p>
  
  <p>Thanks!</p>