android:src attrs for custom view

Is there a way to set default android attrs to the custom view, that would be available when defining this view in xml?. For example, I need to create CustomImageView that will be FrameLayout with ImageView and ProgressBar inside it. If I add such view in xml I want to set background or src of that view, for example. FrameLayout has no android:src attribute and it doesn't offer via Android Studio autocomplete window, can I make somehow Android Studio to know that this layout can process such attributes?

The trick is to put android:src in custom styleables, located at values/attrs.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="MyView">
        <attr name="android:src"/>
    </declare-styleable>
</resources>

And having MyView class that is a descendant of a View, then in xml file we'd see this: