title: Android Icon is pixelated/ blurry
body: <p>I loaded an icon with the Android Asset Studio.<br>
  It created me mdpi, hdpix hdpi, xxhdpi and a xxxhdpi icon<br>
  but the icons are pixelated and blurry :( <br>
  Here the code:<br></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.constraint.ConstraintLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"&gt;
  
      &lt;ImageView
          android:id="@+id/img"
          android:layout_width="144dp"
          android:layout_height="144dp"
          android:layout_margin="16dp"
          android:src="@mipmap/ic_launcher"
          app:layout_constraintBottom_toBottomOf="parent"
          app:layout_constraintLeft_toLeftOf="parent"
          app:layout_constraintRight_toRightOf="parent"
          app:layout_constraintTop_toTopOf="parent"/&gt;
  
  &lt;/android.support.constraint.ConstraintLayout&gt;
  </code></pre>