title: How to let the ImageView and the TextView the same height
body: <p>My layout have ImageView(iv) and TextView(tv).
  I want to let the tv right of iv.
  And the tv's height is same as iv's.
  The tv Gravity set as CENTER_VERTICAL.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/RelativeLayout1"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical" &gt;
  
  
      &lt;ImageView
          android:id="@+id/iv"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignParentTop="true"/&gt;
  
  
      &lt;TextView
          android:id="@+id/tv"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:layout_alignParentTop="true"
          android:layout_toRightOf="@+id/iv"
          android:text="TextView" android:gravity="center_vertical"/&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>How to arrive the goal?</p>