title: is it possible to set transparent for viewpager of android
body: <p>I want to make transparent for <code>ViewPager</code>, but I can't find any way to get it (It always has WHITE color, not transparent)</p>
  
  <p>My layout: main_activity.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="@drawable/wallpaper"&gt;
  
      &lt;android.support.v4.view.ViewPager
          android:id="@+id/view_pager"
          android:background="#00ffffff"
          android:layout_width="match_parent"
          android:layout_height="match_parent" &gt;
      &lt;/android.support.v4.view.ViewPager&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>The layout for first fragment:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:orientation="vertical"
      android:background="#00ffffff"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
  
      &lt;TextView
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="AAAAAAAAAAAAAAAA"
          android:id="@+id/textView"
          android:layout_gravity="center_horizontal"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>And the layout for second fragment:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:orientation="vertical"
      android:background="#00ffffff"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
  
      &lt;Button
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="New Button"
          android:id="@+id/button"
          android:layout_gravity="center_horizontal"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>I already set transparent for both background of <code>ViewPager</code> and layouts for fragments. But it's always WHITE.</p>
  
  <p>So, Is it possible to set transparent for <code>ViewPager</code>? Can you explain it for me (if any). Any suggestion will be appreciate. Thank you.</p>
  
  <p>EDIT:
  I used the default theme for activity:</p>
  
  <p><a href="https://i.stack.imgur.com/do4z5.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/do4z5.jpg" alt="enter image description here"></a></p>
  
  <p>Screenshot:
  <a href="https://i.stack.imgur.com/PTUJe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PTUJe.png" alt="screenshot"></a></p>