title: Remove ripple effect from RadioButton, android?
body: <p>I have custom styled a RadioButton for adding radiobutton image on the right side</p>
  
  <pre><code>&lt;RadioButton
                  android:layout_margin="20dp"
                  android:drawableRight="@drawable/custom_btn_radio"
                  android:button="@null"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:text="Invite Only"/&gt; 
  </code></pre>
  
  <p>custom_btn_radio.xml</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 android:drawable="@drawable/check_box" android:state_checked="false"/&gt;
      &lt;item android:drawable="@drawable/close_btn" android:state_checked="true"/&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>but, the radiobutton's ripple effect also enlarged. how can i remove ripple effect from RadioButton? and also how to customize ripple effect?</p>
  
  <p>Thank you in advance. </p>