title: com.crystal.crystalrangeseekbar.widgets.BubbleThumbRangeSeekbar: problem with right and thumb image
body: <p>I use in my android app with Kotlin the following library "com.crystal.crystalrangeseekbar.widgets.BubbleThumbRangeSeekbar" to set the price of product in slider. Here's the following code :</p>
  
  <pre><code>&lt;com.crystal.crystalrangeseekbar.widgets.BubbleThumbRangeSeekbar
      android:id="@+id/seekBar"
      android:layout_width="335dp"
      android:layout_height="wrap_content"
      android:layout_marginStart="20dp"
      android:layout_marginEnd="20dp"
      android:layout_marginTop="41dp"
      app:min_value="0"
      app:max_value="100"
      app:bar_color="@color/lightGreyTwo"
      app:bar_highlight_color="@color/honey"
      app:data_type="_integer"
      app:right_thumb_image="@drawable/circle"
      app:left_thumb_image="@drawable/circle"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintTop_toBottomOf="@+id/textViewPrice" /&gt;
  </code></pre>
  
  <p>And the following is circle.xml in drawable folder:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;item&gt;
          &lt;shape android:shape="oval"&gt;
              &lt;stroke android:color="@color/honey" android:width="8dp" /&gt;
              &lt;solid android:color="@color/white"/&gt;
              &lt;size android:width="22dp" android:height="22dp"/&gt;
          &lt;/shape&gt;
      &lt;/item&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>But, I get the following error :</p>
  
  <blockquote>
    <p>android.view.InflateException: Binary XML file line #132: Binary XML
    file line #132: Error inflating class
    com.crystal.crystalrangeseekbar.widgets.BubbleThumbRangeSeekbar
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
            at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
            at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
            at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
            at android.os.Handler.dispatchMessage(Handler.java:106)
            at android.os.Looper.loop(Looper.java:193)
            at android.app.ActivityThread.main(ActivityThread.java:6669)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
         Caused by: android.view.InflateException: Binary XML file line #132: Binary XML file line #132: Error inflating class com.crystal.crystalrangeseekbar.widgets.BubbleThumbRangeSeekbar
         Caused by: android.view.InflateException: Binary XML file line #132: Error inflating class com.crystal.crystalrangeseekbar.widgets.BubbleThumbRangeSeekbar</p>
  </blockquote>
  
  <p>My objective is to set a slider as the following picture 
  <a href="https://i.stack.imgur.com/c35sw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/c35sw.png" alt="enter image description here"></a> </p>