title: Android facebook sdk 4.1.0 set image to login button
body: <p>I want to set only custom image to facebook login button. But it display logo of facebook when i set image to login button.</p>
  
  <p>My xml code is as follows,</p>
  
  <pre><code>&lt;com.facebook.login.widget.LoginButton
              android:id="@+id/btnFacebookLogin"
              style="@style/FacebookLoginButton"
              android:layout_width="wrap_content"
              android:layout_height="match_parent"
              android:layout_marginRight="5dp"
              android:gravity="center_vertical"
              android:padding="10dp"
              fb:com_facebook_login_text=""
              fb:com_facebook_logout_text=""
              android:scaleType="centerInside" /&gt;
  </code></pre>
  
  <p>style,</p>
  
  <pre><code>&lt;style name="FacebookLoginButton"&gt;
      &lt;item name="android:layout_height"&gt;42dp&lt;/item&gt;
      &lt;item name="android:paddingTop"&gt;10sp&lt;/item&gt;
      &lt;item name="android:paddingBottom"&gt;10sp&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>But no setting properly. I want to set this image only,
  <a href="https://i.stack.imgur.com/0s7lw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0s7lw.png" alt="enter image description here"></a></p>
  
  <p>Please help me to set this image only. Thank you. </p>