title: How add a single menu item left to the toolbar in android?
body: <p>I simply want a back button in left side of toolbar.But when i added with following code ,appear in right side of toolbar.how can i change to it to left side?</p>
  
  <p>my code</p>
  
  <pre><code>&lt;menu 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="com.me.myapp.activities.Timer"&gt;
      &lt;item
          android:id="@+id/backButton"
          android:title="Back Button"
          android:icon="@mipmap/back_icon"
          app:showAsAction="ifRoom"&gt;&lt;/item&gt;
  &lt;/menu&gt;
  </code></pre>