Stretched LayerDrawable with centered icon

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:layout_width="200dp"
        android:layout_height="100dp"
        android:src="@drawable/sample"
        android:scaleType="fitXY"/>

</android.support.constraint.ConstraintLayout>

sample.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/colorAccent"/>
    <item android:drawable="@drawable/ic_android_black_24dp" android:gravity="center"/>
</layer-list>