这就是我想要做的。我写了一个应该处理我的XML文件的类。
package de.lies;
import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
public class Entry {
private static final String ns = null;
public final String rank;
public final String source;
public final String date;
public final String headline;
public final String description;
public final String articleURL;
public final String sourceURL;
public final String imageURL;
private Entry(String rank, String source, String date, String headline, String description, String articleURL, String sourceURL, String imageURL){
this.rank = rank;
this.source = source;
this.date = date;
this.headline = headline;
this.description = description;
this.articleURL = articleURL;
this.sourceURL = sourceURL;
this.imageURL = imageURL;
}
private Entry readEntry (XmlPullParser parser) throws XmlPullParserException, IOException{
parser.require(XmlPullParser.START_TAG, ns, "entry");
String rank = null;
String source = null;
String date = null;
String headline = null;
String description = null;
String articleURL = null;
String sourceURL = null;
String imageURL = null;
while(parser.next() != XmlPullParser.END_TAG) {
if(parser.getEventType() != XmlPullParser.START_TAG){
continue;
}
String name = parser.getName();
if(name.equals("rank")){
rank = readRank(parser);
} else if(name.equals("source")){
source = readSource(parser);
} else if(name.equals("date")){
date = readDate(parser);
} else if(name.equals("headline")){
headline = readHeadline(parser);
} else if(name.equals("description")){
description = readDescription(parser);
} else if(name.equals("articleURL")){
articleURL = readArticleURL(parser);
} else if(name.equals("sourceURL")){
sourceURL = readSourceURL(parser);
} else if(name.equals("imageURL")){
imageURL = readImageURL(parser);
} else {
skip(parser);
}
}
return new Entry(rank, source, date, headline, description, articleURL, sourceURL, imageURL);
}
private String readRank(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String rank = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return rank;
}
private String readSource(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "source");
String source = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "source");
return source;
}
private String readDate(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String date = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return date;
}
private String readHeadline(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String headline = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return headline;
}
private String readDescription(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String description = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return description;
}
private String readArticleURL(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String articleURL = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return articleURL;
}
private String readSourceURL(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String sourceURL = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return sourceURL;
}
private String readImageURL(XmlPullParser parser) throws IOException, XmlPullParserException{
parser.require(XmlPullParser.START_TAG, ns, "rank");
String imageURL = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "rank");
return imageURL;
}
private String readText(XmlPullParser parser) throws IOException, XmlPullParserException {
String result = "";
if (parser.next() == XmlPullParser.TEXT) {
result = parser.getText();
parser.nextTag();
}
return result;
}
private void skip(XmlPullParser parser) throws XmlPullParserException, IOException {
if (parser.getEventType() != XmlPullParser.START_TAG) {
throw new IllegalStateException();
}
int depth = 1;
while (depth != 0) {
switch (parser.next()) {
case XmlPullParser.END_TAG:
depth--;
break;
case XmlPullParser.START_TAG:
depth++;
break;
}
}
}
}
我现在遇到的问题是如何处理XML文件。特别是：如何读取XML文件以及如何让类为文件工作并将其打印到Android设备。非常感谢任何帮助。更确切地说，我有一个具有此布局的XML文件
<entry>
<rank>Rank 1</rank>
<source><![CDATA[Der Postillon]]></source>
<date>2013-09-24 15:11:48</date>
<scores>
<Flies>10797</Flies>
<Facebook>10190</Facebook>
<Twitter>345</Twitter>
<GPlus>262</GPlus>
</scores>
<headline>Wikipedia löscht FDP-Eintrag wegen fehlender Relevanz</headline>
<description>Berlin (dpo) - Das ging schnell. Seit gestern existiert der Wikipedia-Eintrag der FDP nicht mehr. Der mit knapp 10.000 Wörtern durchaus umfangreiche Beitrag wurde nach einer kurzen Löschdiskussion entfernt, weil er den strengen Relevanzkriterien des Online-Lexikons nicht mehr standhalten konnte. Für marginale Splitterparteien und Kleinstgruppierungen wie die Liberalen sei kein Platz in der Wikipedia. [Weiterlesen]</description>
<articleURL>http://www.der-postillon.com/2013/09/wikipedia-loscht-fdp-eintrag-wegen.html</articleURL>
<sourceURL><![CDATA[http://www.der-postillon.com]]></sourceURL>
<imageURL><![CDATA[http://www.10000flies.de/images/nopic.jpg]]></imageURL>
</entry>
但我似乎没有找到一个很好的解决方案来处理这个问题。但我敢打赌，这非常容易。我找不到它。或者，您可以给我一个关于如何从本地文件夹中读取XML文件并使用它的简单教程。
答案 0 :(得分：2)
如果你想从资产文件夹中获取xml文件，请使用下面的代码，
public void copyXMLFromAssets()
{
AssetManager assetManager = mActivity.getAssets();
File AppDirectory = new File(Environment.getExternalStorageDirectory() + "/" + dirName);
if (!AppDirectory.exists())
{
AppDirectory.mkdirs();
}
InputStream in = null;
OutputStream out = null;
try
{
in = assetManager.open(XML_name);
File outFile = new File(AppDirectory +"/"+XML_name);
out = new FileOutputStream(outFile);
copyFile(in, out);
in.close();
in = null;
out.flush();
out.close();
out = null;
}
catch (IOException e)
{
Log.e("tag", "Failed to copy asset file: " + XML_name, e);
}
}
然后使用以下代码从保存的位置读取此复制的XML文件
public InputStream GetStreamFromXmlFileOnSDCard()
{
File file = new File(Environment.getExternalStorageDirectory() +xml_path);
InputStream istr = null;
try
{
istr = new FileInputStream(file);
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
return istr;
}
上面的函数返回xml文件的InputStream;您可以传递此InputStream来提取解析器并解析数据。