title: Barrier doesn't set to referenceIds in constraint layout?
body: <p>hey last few days I am exploring about the constraint layout.the concept of barrier I can understand but when i implement I can't get the correct output.</p>
  
  <p>I want to set the barrier in the right direction to reference Id's. But barrier doesn't work.it should set for the views which are nameLabel and passionLabel. please help me. thank you in advance. This is the <a href="https://i.imgur.com/th70LzR.png" rel="nofollow noreferrer">current output</a> </p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.constraint.ConstraintLayout 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/activity_main_barriers"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
  
      &lt;TextView
          android:id="@+id/textView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginStart="8dp"
          android:layout_marginTop="16dp"
          android:layout_marginEnd="8dp"
          android:fontFamily="@font/roboto_bold"
          android:text="@string/barriers"
          android:textColor="@color/black"
          android:textSize="25sp"
          android:textStyle="bold"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent" /&gt;
  
      &lt;ImageView
          android:id="@+id/header"
          android:layout_width="0dp"
          android:layout_height="149dp"
          android:layout_marginTop="8dp"
          android:scaleType="centerCrop"
          android:src="@drawable/arun"
          app:layout_constraintLeft_toLeftOf="parent"
          app:layout_constraintRight_toRightOf="parent"
          app:layout_constraintTop_toBottomOf="@+id/textView" /&gt;
  
      &lt;TextView
          android:id="@+id/title"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginStart="8dp"
          android:layout_marginTop="8dp"
          android:layout_marginEnd="8dp"
          android:fontFamily="@font/roboto_bold"
          android:text="Arun Pandian"
          android:textColor="@color/colorPrimaryDark"
          android:textSize="24sp"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintHorizontal_bias="0.032"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toBottomOf="@+id/header" /&gt;
      &lt;!--@string/hobbies--&gt;
      &lt;TextView
          android:id="@+id/passionLabel"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:labelFor="@+id/etPassion"
          android:text="@string/passion"
          android:textColor="@color/colorPrimaryDark"
          android:textSize="15sp"
          app:layout_constraintBaseline_toBaselineOf="@+id/etPassion"
          app:layout_constraintStart_toStartOf="@+id/nameLabel" /&gt;
      &lt;TextView
          android:id="@+id/nameLabel"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginStart="8dp"
          android:fontFamily="@font/roboto_italic"
          android:labelFor="@+id/cameraType"
          android:text="@string/name"
          android:textColor="@color/colorPrimaryDark"
          android:textSize="15sp"
          app:layout_constraintBaseline_creator="1"
          app:layout_constraintBaseline_toBaselineOf="@+id/etName"
          app:layout_constraintLeft_creator="1"
          app:layout_constraintStart_toStartOf="@+id/title"
          app:layout_editor_absoluteX="16dp"
          app:layout_editor_absoluteY="189dp"
          tools:layout_constraintBaseline_creator="0"
          tools:layout_constraintLeft_creator="0" /&gt;
      &lt;EditText
          android:id="@+id/etPassion"
          android:layout_width="217dp"
          android:layout_height="wrap_content"
          android:layout_marginTop="16dp"
          android:ems="10"
          android:inputType="textPersonName"
          android:text="Developing softwares"
          app:layout_constraintEnd_toEndOf="@+id/etName"
          app:layout_constraintHorizontal_bias="0.0"
          app:layout_constraintStart_toStartOf="@+id/etName"
          app:layout_constraintTop_toBottomOf="@+id/etName"
          app:layout_editor_absoluteX="73dp"
          app:layout_editor_absoluteY="225dp"
          tools:layout_constraintLeft_creator="1"
          tools:layout_constraintRight_creator="1"
          tools:layout_constraintTop_creator="0" /&gt;
      &lt;EditText
          android:id="@+id/etName"
          android:layout_width="0dp"
          android:layout_height="wrap_content"
          android:layout_marginStart="16dp"
          android:layout_marginTop="16dp"
          android:layout_marginEnd="148dp"
          android:inputType="textPersonName"
          android:text="Arun Pandian"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintStart_toEndOf="@+id/tvName"
          app:layout_constraintTop_toBottomOf="@+id/title"
          tools:layout_constraintLeft_creator="1"
          tools:layout_constraintRight_creator="1"
          tools:layout_constraintTop_creator="0" /&gt;
      &lt;android.support.constraint.Barrier
          android:id="@+id/barrier"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          app:barrierDirection="end"
          app:constraint_referenced_ids="nameLabel,passionLabel"
          tools:layout_editor_absoluteX="411dp" /&gt;
  &lt;/android.support.constraint.ConstraintLayout&gt;
  </code></pre>