Allow inner classes to be used as custom drawables

    public Drawable inflateFromXml(@NonNull String name, @NonNull XmlPullParser parser,

            @NonNull AttributeSet attrs, @Nullable Theme theme)

            throws XmlPullParserException, IOException {

        // Inner classes must be referenced as Outer$Inner, but XML tag names

        // can't contain $, so the <drawable> tag allows developers to specify

        // the class in an attribute. We'll still run it through inflateFromTag

        // to stay consistent with how LayoutInflater works.

        if (name.equals("drawable")) {

            name = attrs.getAttributeValue(null, "class");

            if (name == null) {

                throw new InflateException("<drawable> tag must specify class attribute");

            }

        }

        Drawable drawable = inflateFromTag(name);

        if (drawable == null) {

            drawable = inflateFromClass(name);