title: how to left to right toolbar api 16
body: <p>I'm using <strong><em>NavigationView</em></strong> and add <strong><em>toolbar</em></strong> with <strong><em>include</em></strong> . I use <code>android:layoutDirection="rtl"</code> and all apis works fine but in <strong><em>api 16</em></strong> it doesn't work.</p>
  
  <p><strong>So how can i left to right toolbar in api 16?</strong></p>
  
  <p>drawer_layout.xml</p>
  
  <pre><code>   &lt;?xml version="1.0" encoding="utf-8"?&gt;
     &lt;android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fitsSystemWindows="true"
     android:layoutDirection="rtl"
     tools:openDrawer="end"&gt;
  
  
     &lt;FrameLayout
         android:id="@+id/content_frame"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_below="@id/appbar" /&gt;
  
     &lt;include
         android:id="@+id/appbar"
         layout="@layout/app_bar_main"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:visibility="visible" /&gt;
  
     &lt;android.support.design.widget.NavigationView
         android:id="@+id/nav_view"
         android:layout_width="wrap_content"
         android:layout_height="match_parent"
         android:layout_gravity="start"
         android:layoutDirection="rtl"
         app:headerLayout="@layout/nav_header_main"
         app:menu="@menu/activity_main_drawer" /&gt;
  
     &lt;/android.support.v4.widget.DrawerLayout&gt;
  </code></pre>
  
  <p>app_bar_main.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout 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="match_parent"
      tools:context=".view.activity.MainActivity"&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:fitsSystemWindows="true"
          app:elevation="0dp"&gt;
  
      &lt;android.support.v7.widget.Toolbar
              android:id="@+id/toolbar_main"
              android:layout_width="match_parent"
              android:layout_height="?attr/actionBarSize"
              android:background="@color/colorPrimary" /&gt;
      &lt;/android.support.design.widget.AppBarLayout&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>MainActivity.java</p>
  
  <pre><code>    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_main);
      setSupportActionBar(toolbar);
      if (getSupportActionBar() != null) {
          getSupportActionBar().setDisplayHomeAsUpEnabled(true);
          getSupportActionBar().setDisplayShowHomeEnabled(true);
      }
  </code></pre>