Use images inside drawables

bg_image.xml

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <bitmap
            android:gravity="bottom|center_horizontal"
            android:src="@mipmap/ic_drag_handle_white_18px" />
    </item>
</layer-list>

This are several stack overflow questions to know how to use it:

• http://stackoverflow.com/questions/21002224/add-a-background-image-to-shape-in-xml-android
• http://stackoverflow.com/questions/9608019/resize-bitmap-inside-a-drawable-layer-list
• http://stackoverflow.com/questions/10706853/android-how-to-change-item-width-and-height
• http://stackoverflow.com/questions/3275333/how-to-use-a-xml-shape-drawable
• http://stackoverflow.com/questions/6061387/android-drawable-specifying-shape-width-in-percent-in-the-xml-file