如何在本地文件上使用XMLPullParser [英] How to use XMLPullParser on a local file

问题描述

我正在使用XMLPullParser来读取资产文件夹中的本地XML文件，该教程的代码位于android开发人员网站上:

I am using the XMLPullParser to read a local XML file in the assets folder, the code for the tutorial is on the android developers website:

链接: http://developer.android.com/reference/org/xmlpull/v1/XmlPullParser.html

代码:

import java.io.IOException;
import java.io.StringReader;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;

 public class SimpleXmlPullApp
  {

 public static void main (String args[])
     throws XmlPullParserException, IOException
 {
     XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
     factory.setNamespaceAware(true);
     XmlPullParser xpp = factory.newPullParser();

     xpp.setInput( new StringReader ( "<foo>Hello World!</foo>" ) );
     int eventType = xpp.getEventType();
     while (eventType != XmlPullParser.END_DOCUMENT) {
      if(eventType == XmlPullParser.START_DOCUMENT) {
          System.out.println("Start document");
      } else if(eventType == XmlPullParser.START_TAG) {
          System.out.println("Start tag "+xpp.getName());
      } else if(eventType == XmlPullParser.END_TAG) {
          System.out.println("End tag "+xpp.getName());
      } else if(eventType == XmlPullParser.TEXT) {
          System.out.println("Text "+xpp.getText());
      }
      eventType = xpp.next();
     }
     System.out.println("End document");
   }
 }`

我意识到StringReader是我必须替换的东西，但是我应该用它替换什么以便可以使用本地文件?

I realise that the StringReader is what I have to replace, but what do I replace it with so that I can use the local file?

推荐答案

如果xml文件位于资产文件夹中，则可以按以下方式进行检索:

If the xml file is in the assets folder, it can be retrieved like this:

使用context.getAssets().openXmlResourceParser(String filename).它返回一个XmlResourceParser，在其示例中为XmlPullParser的实现.如果文件位于assets/subfolder/file.xml中，则filename参数将为"subfolder/file.xml".

Use context.getAssets().openXmlResourceParser(String filename). It returns an XmlResourceParser which is an implementation of the XmlPullParser in their example. If the file is in assets/subfolder/file.xml, the filename parameter would be "subfolder/file.xml".

要考虑的另一件事是，您可以将其放在资源下的XML文件夹中，并将其检索为R.xml.filename:

The other thing to consider is that you can put it in the XML folder under resources and retrieve it as R.xml.filename:

res/xml/filename.xml

<?xml version="1.0" encoding="utf-8"?>
<credits>
    <credit>one</credit>
    <credit>two</credit>
</credits>

在Android活动中:

In the Android Activity:

final XmlResourceParser parser = getContext().getResources().getXml(R.xml.filename);

这篇关于如何在本地文件上使用XMLPullParser的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！