title: Toolbar haven't the full size
body: <p>Hey Guys I want to make a Custom Toolbar. I tried so many things but nothing works.... So I have this in my manifest.xml:</p>
  
  <pre><code>&lt;application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:supportsRtl="true"&gt;
      &lt;activity android:name=".HomeActivity"
          android:theme="@style/Theme.AppCompat.Light.NoActionBar"&gt;
          &lt;!--android:theme="@style/HomeActionBar"&gt;--&gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
  &lt;/application&gt;
  </code></pre>
  
  <p>And here my activity_home.xml:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><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:tools="http://schemas.android.com/tools"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:id="@+id/activity_home"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:paddingBottom="@dimen/activity_vertical_margin"
      android:paddingLeft="@dimen/activity_horizontal_margin"
      android:paddingRight="@dimen/activity_horizontal_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      tools:context="com.iiiii.iiiii.HomeActivity"&gt;
  
      &lt;android.support.v7.widget.Toolbar
          android:id="@+id/my_toolbar"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          android:background="?attr/colorPrimary"
          app:layout_scrollFlags="enterAlways|scroll" /&gt;
  
      &lt;!-- &lt;Button
          android:id="@+id/button2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_centerHorizontal="true"
          android:layout_centerVertical="true"
          android:text="Delete SharedPreferences" /&gt; --&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>But look! I didn't get the full size of the ActionBar:
  <a href="https://i.stack.imgur.com/50QHu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/50QHu.png" alt="enter image description here"></a></p>