Here you can find the source of optAttr(final XmlPullParser pp, final String attrName, final String defaultValue)
public static String optAttr(final XmlPullParser pp, final String attrName, final String defaultValue)
//package com.java2s; /*/*w ww . jav a 2 s . c om*/ * For license please see accompanying LICENSE.txt file (available also at http://www.xmlpull.org/). * According to www.xmlpull.org, this code is in the public domain. */ import org.xmlpull.v1.XmlPullParser; public class Main { public static String optAttr(final XmlPullParser pp, final String attrName, final String defaultValue) { final String attr = pp.getAttributeValue(null, attrName); if (attr != null) { final String trimmedAttr = attr.trim(); if (trimmedAttr.length() > 0) return trimmedAttr; } return defaultValue; } }