String getAttrRawString(int i) {
        int idx = attrs.get(i * 5 + 2);
        if (idx >= 0) {
            return strings[idx];
        }
        return null;
    }
a class to read android axml

@author <a href="mailto:pxb1988@gmail.com">Panxiaobo</a>
android/third_party/apkbuilder/src/main/java/pxb/android/axml/AxmlParser.java