public String getAttrNs(int i) {
        int idx = attrs.get(i * 5 + 0);
        return idx >= 0 ? strings[idx] : 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