title: Android Studio Design not displaying anything
body: <p>edit:I am new to stackoverflow so it wont let me Upload directly..Please click the link below
  <a href="https://i.stack.imgur.com/WBvGz.png" rel="nofollow noreferrer">Android Studio EMPTY DESIGN </a></p>
  
  <p>It works perfectly fine in emulator and my Physical device but i can't see anything on the design Layout..
  I have tried this following solutions that i got via searching google
  Updated SDK
  Updated Android Studio
  I also tried Build>Clean Project</p>
  
  <p>File>Invalidate Cache/Restart
  Tried to change the API to older version like API 25 and API 26..(Currently Installed API 28)..
  Still nothing works help me..
  XML CODE</p>
  
  <blockquote>
    
  </blockquote>
  
  <pre><code>&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:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:context=".MainActivity"&gt;
  
      &lt;TextView
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="Hello World!"
          app:layout_constraintBottom_toBottomOf="parent"
          app:layout_constraintLeft_toLeftOf="parent"
          app:layout_constraintRight_toRightOf="parent"
          app:layout_constraintTop_toTopOf="parent" /&gt;
  
      &lt;ImageView
          android:id="@+id/imageView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:contentDescription="@null"
          app:srcCompat="@drawable/ball_100x100"
          tools:layout_editor_absoluteX="127dp"
          tools:layout_editor_absoluteY="399dp" /&gt;
  
  &lt;/android.support.constraint.ConstraintLayout&gt;
  </code></pre>