title: Using Relativelayout in ConstraintLayout
body: <p>I've known <code>ConstraintLayout</code> can makes more flexible view than <code>RelativeLayout</code>.
  and using <code>ConstraintSet</code> can make child view of <code>ConstraintLayout</code> transformed.  </p>
  
  <p>Is it a proper way to use <code>RelativeLayout</code> in <code>ConstraintLayout</code> in my case below?</p>
  
  <p>I'd like to click <code>RelativeLayout(ViewGroup)</code> to enter another activity.
  and I've tried to use <code>barrier</code> and <code>group</code> using <code>ConstraintLayout 1.1.0 beta 2</code> but these can't be used for view group click event.</p>
  
  <p><img src="https://i.stack.imgur.com/R4efb.png" alt="enter image description here"></p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
  
      &lt;!-- other views--&gt;
  
      &lt;android.support.constraint.Guideline
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:id="@+id/guideline"
          app:layout_constraintGuide_begin="400dp"
          android:orientation="horizontal" /&gt;
  
      &lt;!-- Bottom view--&gt;
      &lt;RelativeLayout
          android:id="@+id/relative_layout"
          android:layout_width="0dp"
          android:layout_height="0dp"
          app:layout_constraintBottom_toBottomOf="parent"
          app:layout_constraintLeft_toLeftOf="parent"
          app:layout_constraintRight_toRightOf="parent"
          app:layout_constraintTop_toBottomOf="@+id/guideline"&gt;
  
          &lt;ImageView
              android:id="@+id/image_view"
              android:layout_width="200dp"
              android:layout_height="200dp"
              android:layout_alignParentLeft="true"
              /&gt;
  
          &lt;TextView
              android:id="@+id/title"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:text="Title"
              android:layout_toRightOf="@+id/image_view"/&gt;
  
          &lt;TextView
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:text="Brief"
              android:layout_toRightOf="@+id/image_view"
              android:layout_below="@+id/title"/&gt;
  
      &lt;/RelativeLayout&gt;
  
  &lt;/android.support.constraint.ConstraintLayout&gt;
  </code></pre>