title: SwipeRefreshLayout (v4) with Toolbar hide the Listview
body: <p>i have a layout with swipeaRefreshLayout and a Toolbar(Both from v4 and v7 using v-21), but when i start the app the listview its hide, i only can see the toolbar like a actionbar.
  This is my code:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&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" /&gt;
  
      &lt;android.support.v4.widget.SwipeRefreshLayout
          android:id="@+id/swipe_container"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_below="@+id/toolbar"
          android:layout_toEndOf="@id/toolbar"&gt;
  
  
              &lt;ListView
                  android:id="@+id/questionList"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_below="@+id/swipe_container"
                  android:layout_gravity="center_horizontal"
                  android:layout_toEndOf="@id/swipe_container"
                  android:background="#686868"
                  android:visibility="visible" /&gt;
  
              &lt;com.shamanland.fab.FloatingActionButton
                  android:id="@+id/btnNew"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_alignParentBottom="true"
                  android:layout_alignParentEnd="true"
                  android:layout_marginBottom="50dp"
                  android:layout_marginRight="32dp" /&gt;
  
              &lt;LinearLayout
                  android:id="@+id/emptyData"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:layout_gravity="center"
                  android:background="#686868"
                  android:clickable="true"
                  android:orientation="vertical"
                  android:visibility="gone"&gt;
  
                  &lt;TextView
                      android:id="@+id/textView"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_gravity="center"
                      android:padding="4dp"
                      android:text="No hay elementos disponibles"
                      android:textAppearance="?android:attr/textAppearanceLarge"
                      android:textColor="@android:color/white"
                      android:textStyle="bold" /&gt;
  
                  &lt;ImageView
                      android:id="@+id/imageView"
                      android:layout_width="wrap_content"
                      android:layout_height="wrap_content"
                      android:layout_gravity="center"
                      android:paddingBottom="4dp"
                      android:src="@android:drawable/ic_dialog_email" /&gt;
              &lt;/LinearLayout&gt;
      &lt;/android.support.v4.widget.SwipeRefreshLayout&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>