当我解析我的xml文件时，在第一个循环上它没关系，但是当它再次循环时，标记“duration”的值写入“Link”字段。
我看到变量elementOn没有得到真正的价值。
以下是我的应用程序的三个类：
SAXParserActivity：
public class SAXParserActivity extends Activity {
XMLGettersSetters data;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/**
* Get the view of the layout within the main layout, so that we can add
* TextViews.
**/
View layout = findViewById(R.id.layout);
/**
* Create TextView Arrays to add the retrieved data to.
**/
TextView artist[];
TextView trackname[];
TextView file[];
TextView duration[];
TextView buyLink[];
TextView plays[];
TextView song_id[];
try {
/**
* Create a new instance of the SAX parser
**/
SAXParserFactory saxPF = SAXParserFactory.newInstance();
SAXParser saxP = saxPF.newSAXParser();
XMLReader xmlR = saxP.getXMLReader();
// URL url = new
// URL("http://www.xmlfiles.com/examples/cd_catalog.xml"); // URL of
// the XML
URL url = new URL(
"http://artistecard.com/api/get_musics/18845.xml?source=iphone"); // URL
// of
// the
// XML
/**
* Create the Handler to handle each of the XML tags.
**/
XMLHandler myXMLHandler = new XMLHandler();
xmlR.setContentHandler(myXMLHandler);
xmlR.parse(new InputSource(url.openStream()));
} catch (Exception e) {
System.out.println(e);
}
data = XMLHandler.data;
/**
* Makes the TextView length the size of the TextView arrays by getting
* the size of the
**/
artist = new TextView[data.getArtist().size()];
trackname = new TextView[data.getTrackname().size()];
file = new TextView[data.getFile().size()];
duration = new TextView[data.getDuration().size()];
buyLink = new TextView[data.getBuyLink().size()];
plays = new TextView[data.getPlays().size()];
song_id = new TextView[data.getSong_id().size()];
/**
* Run a for loop to set All the TextViews with text until the size of
* the array is reached.
*
**/
for (int i = 0; i < data.getArtist().size(); i++) {
artist[i] = new TextView(this);
artist[i].setText("Artist = " + data.getArtist().get(i));
trackname[i] = new TextView(this);
trackname[i].setText("Trackname = " + data.getTrackname().get(i));
file[i] = new TextView(this);
file[i].setText("file = " + data.getFile().get(i));
duration[i] = new TextView(this);
duration[i].setText("Duration = " + data.getDuration().get(i));
buyLink[i] = new TextView(this);
buyLink[i].setText("BuyLink = " + data.getBuyLink().get(i));
plays[i] = new TextView(this);
plays[i].setText("Plays = " + data.getPlays().get(i));
song_id[i] = new TextView(this);
song_id[i].setText("Song_id = " + data.getSong_id().get(i));
((ViewGroup) layout).addView(artist[i]);
((ViewGroup) layout).addView(trackname[i]);
((ViewGroup) layout).addView(file[i]);
((ViewGroup) layout).addView(duration[i]);
((ViewGroup) layout).addView(buyLink[i]);
((ViewGroup) layout).addView(plays[i]);
((ViewGroup) layout).addView(song_id[i]);
}
setContentView(layout);
}
}
XMLHandler：
public class XMLHandler extends DefaultHandler {
String elementValue = null;
Boolean elementOn = false;
public static XMLGettersSetters data = null;
public static XMLGettersSetters getXMLData() {
return data;
}
public static void setXMLData(XMLGettersSetters data) {
XMLHandler.data = data;
}
/**
* This will be called when the tags of the XML starts.
**/
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
elementOn = true;
// if (localName.equals("CATALOG"))
if (localName.equals("album")) {
data = new XMLGettersSetters();
// } else if (localName.equals("CD")) {
} else if (localName.equals("song")) {
/**
* We can get the values of attributes for eg. if the CD tag had an
* attribute( <CD attr= "band">Akon</CD> ) we can get the value
* "band". Below is an example of how to achieve this.
*
* String attributeValue = attributes.getValue("attr");
* data.setAttribute(attributeValue);
*
* */
}
}
/**
* This will be called when the tags of the XML end.
**/
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
elementOn = false;
/**
* Sets the values after retrieving the values from the XML tags
* */
/*if (localName.equalsIgnoreCase("title"))
data.setTitle(elementValue);
else if (localName.equalsIgnoreCase("artist"))
data.setArtist(elementValue);
else if (localName.equalsIgnoreCase("country"))
data.setCountry(elementValue);
else if (localName.equalsIgnoreCase("company"))
data.setCompany(elementValue);
else if (localName.equalsIgnoreCase("price"))
data.setPrice(elementValue);
else if (localName.equalsIgnoreCase("year"))
data.setYear(elementValue);*/
if (localName.equalsIgnoreCase("artist"))
data.setArtist(elementValue);
else if (localName.equalsIgnoreCase("trackname"))
data.setTrackname(elementValue);
else if (localName.equalsIgnoreCase("file"))
data.setFile(elementValue);
else if (localName.equalsIgnoreCase("duration"))
data.setDuration(elementValue);
// elementOn=true;}
else if (localName.equalsIgnoreCase("buyLink")) {
// elementOn=false;
data.setBuyLink(elementValue);
} else if (localName.equalsIgnoreCase("plays"))
data.setPlays(elementValue);
else if (localName.equalsIgnoreCase("song_id"))
data.setSong_id(elementValue);
else if (localName.equalsIgnoreCase("duration"))
data.setDuration(elementValue);
}
/**
* This is called to get the tags value
**/
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (elementOn) {
elementValue = new String(ch, start, length);
elementOn = false;
}
}
}
和 XMLGettersSetters：
public class XMLGettersSetters {
private ArrayList<String> artist = new ArrayList<String>();
private ArrayList<String> trackname = new ArrayList<String>();
private ArrayList<String> file = new ArrayList<String>();
private ArrayList<String> duration = new ArrayList<String>();
private ArrayList<String> buyLink = new ArrayList<String>();
private ArrayList<String> plays = new ArrayList<String>();
private ArrayList<String> song_id = new ArrayList<String>();
public ArrayList<String> getArtist() {
return artist;
}
public void setArtist(String artist) {
this.artist.add(artist);
Log.i("This is the artist:", artist);
}
public ArrayList<String> getTrackname() {
return trackname;
}
public void setTrackname(String trackname) {
this.trackname.add(trackname);
Log.i("This is the trackname:", trackname);
}
public ArrayList<String> getFile() {
return file;
}
public void setFile(String file) {
this.file.add(file);
Log.i("This is the file:", file);
}
public ArrayList<String> getDuration() {
return duration;
}
public void setDuration(String duration) {
this.duration.add(duration);
Log.i("This is the duration:", duration);
}
public ArrayList<String> getBuyLink() {
return buyLink;
}
public void setBuyLink(String buyLink) {
this.buyLink.add(buyLink);
Log.i("This is the Link:", buyLink);
}
public ArrayList<String> getPlays() {
return plays;
}
public void setPlays(String plays) {
this.plays.add(plays);
Log.i("This is the plays:", plays);}
public ArrayList<String> getSong_id() {
return song_id;
}
public void setSong_id(String song_id) {
this.song_id.add(song_id);
Log.i("This is the song_id:", song_id);
}
/*public ArrayList<String> getCompany() {
return company;
}
public void setCompany(String company) {
this.company.add(company);
Log.i("This is the company:", company);
}
public ArrayList<String> getPrice() {
return price;
}
public void setPrice(String price) {
this.price.add(price);
Log.i("This is the price:", price);
}
public ArrayList<String> getYear() {
return year;
}
public void setYear(String year) {
this.year.add(year);
Log.i("This is the year:", year);
}
public ArrayList<String> getTitle() {
return title;
}
public void setTitle(String title) {
this.title.add(title);
Log.i("This is the title:", title);
}
public ArrayList<String> getArtist() {
return artist;
}
public void setArtist(String artist) {
this.artist.add(artist);
Log.i("This is the artist:", artist);
}
public ArrayList<String> getCountry() {
return country;
}
public void setCountry(String country) {
this.country.add(country);
Log.i("This is the country:", country);
}*/
}
这是我的日志：
08-20 12:40:56.575: I/This is the artist:(5184): Патриція
08-20 12:40:56.575: I/This is the trackname:(5184): Тримай тепло
08-20 12:40:56.575: I/This is the file:(5184): /music/file/27244/01.Patricia_-trymay_teplo.mp3
08-20 12:40:56.575: I/This is the duration:(5184): 04:17
08-20 12:40:56.575: I/This is the Link:(5184): https://itunes.apple.com/us/album/lecu/id651136316
08-20 12:40:56.575: I/This is the plays:(5184): 66
08-20 12:40:56.575: I/This is the song_id:(5184): 27244
08-20 12:40:56.575: I/This is the artist:(5184): Патриція
08-20 12:40:56.575: I/This is the trackname:(5184): Дорса
08-20 12:40:56.575: I/This is the file:(5184): /music/file/27246/02.Patricia_-_dorsa.mp3
08-20 12:40:56.575: I/This is the duration:(5184): 02:53
08-20 12:40:56.575: I/This is the Link:(5184): 02:53
08-20 12:40:56.575: I/This is the plays:(5184): 21
08-20 12:40:56.575: I/This is the song_id:(5184): 27246
08-20 12:40:56.575: I/This is the artist:(5184): Патриція
08-20 12:40:56.575: I/This is the trackname:(5184): Я здамся тобі
08-20 12:40:56.575: I/This is the file:(5184): /music/file/27247/03.Patricia_-_ya_zdamsja_tobi.mp3
08-20 12:40:56.575: I/This is the duration:(5184): 03:28
08-20 12:40:56.575: I/This is the Link:(5184): 03:28
08-20 12:40:56.575: I/This is the plays:(5184): 19
08-20 12:40:56.575: I/This is the song_id:(5184): 27247
08-20 12:40:56.575: I/This is the artist:(5184): Патриція
08-20 12:40:56.575: I/This is the trackname:(5184): Пам’ятай
08-20 12:40:56.575: I/This is the file:(5184): /music/file/27248/04.Patricia_-_pamyataj.mp3
08-20 12:40:56.575: I/This is the duration:(5184): 03:45
08-20 12:40:56.575: I/This is the Link:(5184): 03:45
08-20 12:40:56.575: I/This is the plays:(5184): 16
08-20 12:40:56.575: I/This is the song_id:(5184): 27248
08-20 12:40:56.575: I/This is the artist:(5184): Патриція
08-20 12:40:56.575: I/This is the trackname:(5184): Навіки живе
08-20 12:40:56.575: I/This is the file:(5184): /music/file/27249/05.Patricia_-_naviku_Zhuve.mp3
08-20 12:40:56.575: I/This is the duration:(5184): 03:57
08-20 12:40:56.575: I/This is the Link:(5184): 03:57
08-20 12:40:56.575: I/This is the plays:(5184): 17
08-20 12:40:56.575: I/This is the song_id:(5184): 27249