title: Android background vector is stretching
body: <p>I am working on an Android project and I chose vector drawables, it runs fine for all versions. 
  However, on some devices (Wiko Ridge 1280*720, ~ 294 dpi running on KitKat (4.4) in my case ), the image is stretched to fullscreen.
  What I'm doing is creating an xml drawable:</p>
  
  <pre><code>&lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;item&gt;
          &lt;color android:color="#FFFFFF"&gt;&lt;/color&gt;
      &lt;/item&gt;
      &lt;item
          android:gravity="center"
          android:width="210dp"
          android:height="90dp"
          android:bottom="80dp"
          android:drawable="@drawable/logo_app" /&gt;
  &lt;/layer-list&gt;
  </code></pre>
  
  <p>*@drawable/logo_app is the vector.</p>
  
  <p>That I'm setting as window background of the SplashActivity:</p>
  
  <pre><code>&lt;style name="AppTheme.Splash" parent="AppTheme.NoActionBar"&gt;
      &lt;item name="android:windowBackground"&gt;@drawable/splash_bg&lt;/item&gt;
      &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
      &lt;item name="windowNoTitle"&gt;true&lt;/item&gt;
      &lt;item name="android:windowFullscreen"&gt;true&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>I tried many solutions, such as: </p>
  
  <ul>
  <li>using png instead of vector</li>
  <li>creating a specific drawable background for devices under api 21</li>
  </ul>
  
  <p>But nothing seems to solve the problem.</p>