title: Android application showing default icon launcher
body: <p>I'm having a problem with my android application icon launcher.
  I have drawables for hdpi, xhdpi, mdpi and xxhdpi.</p>
  
  <p>There is the code of my <code>AndroidManifest.xml</code> file:</p>
  
  <pre><code>&lt;application
          android:name=".MyApp"
          android:icon="@drawable/ic_launcher_app"&gt;
  ...
  &lt;/application&gt;
  </code></pre>
  
  <p>In some devices the icon launcher appears normally. However, in other devices, the application shows the default package icon launcher.</p>
  
  <p>Besides that, I am using Gradle in my project. Does Gradle have any relation with kind of problem?</p>
  
  <p>Any ideas? Thanks in advance</p>