我有个问题。我有多条记录，在SAX解析后，这些记录来自一个xml文件，需要插入Hashtable并显示在列表视图中。我可以在列表视图中显示数据，但它所提供的只是列表视图中所有行的相同数据。我认为这与我的哈希表编码或SAX解析有关。
这是我试图从网上检索数据的xml文件：http://spark.opac.tp.edu.sg/X?op=present&set_no＝007584&set_entry=0000000000000002000000003000000004000000005&format=marc
下面是我将数据放入哈希表的处理程序：
ArrayList<Hashtable<String,String>> list = new ArrayList<Hashtable<String,String>>();
Hashtable<String,String> data = new Hashtable<String,String>();
private final String MY_DEBUG_TAG = "Debugging~";
private Boolean in_record = false;
private Boolean in_author = false;
private Boolean in_format = false;
private Boolean in_title = false;
private Boolean in_callNumber = false;
private String format = "";
private String title = "";
private String author = "";
private String callNumber = "";
//private SearchList sList;
//public SearchList getListData() {
// return this.sList;
//}
@Override
public void startDocument() throws SAXException {
// this.sList = new SearchList();
}
@Override
public void endDocument() throws SAXException {
// Nothing to do
}
/** Called when tag starts ( ex:- <name>AndroidPeople</name>
* -- <name> )*/
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
if(localName.equalsIgnoreCase("record")) {
this.in_record = true;
}
else
if (localName.equalsIgnoreCase("fixfield")) {
if (attributes.getValue("id").equalsIgnoreCase("FMT")) {
this.in_format = true;
}
}
else
if(localName.equalsIgnoreCase("varfield")) {
if(attributes.getValue("id").equalsIgnoreCase("100")) {
this.in_author = true;
}
else
if(attributes.getValue("id").equalsIgnoreCase("245")) {
this.in_title = true;
}
else
if(attributes.getValue("id").equalsIgnoreCase("099")) {
this.in_callNumber = true;
}
}
}
public void characters(char[] ch, int start, int length)
throws SAXException {
StringBuffer sb = new StringBuffer();
String finalString;
String originalString = "";
String chars = new String(ch, start, length);
chars = chars.trim();
if (this.in_format) {
sb.append(chars);
finalString = sb.toString();
this.format = finalString;
}
else
if (this.in_author) {
if(!(chars.equals(""))) {
sb.append(chars);
finalString = sb.toString();
originalString = this.author + finalString;
this.author = originalString;
}
}
else
if (this.in_title) {
if(!(chars.equals(""))) {
sb.append(chars);
finalString = sb.toString();
originalString = this.title + finalString;
this.title = originalString;
}
}
else
if (this.in_callNumber) {
if(!(chars.equals(""))) {
sb.append(chars);
finalString = sb.toString();
this.callNumber = finalString;
}
}
}
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (localName.equalsIgnoreCase("record")) {
this.in_record=false;
}
else
if (localName.equalsIgnoreCase("fixfield")) {
if (this.in_format) {
//set the foundCharacter to Hashtable
data.put("format", this.format);
//sList.setFormat(this.format);
Log.d(MY_DEBUG_TAG,"Format = " + this.format);
this.in_format = false;
}
}
else
if(localName.equalsIgnoreCase("varfield")) {
if (this.in_author) {
//set the foundCharacter to Hashtable
data.put("author", this.author);
//sList.setAuthor(this.author);
Log.d(MY_DEBUG_TAG,"Author = " + this.author);
this.in_author = false;
}
else
if (this.in_title) {
//set the foundCharacter to Hashtable
data.put("title", this.title);
//sList.setTitle(this.title);
Log.d(MY_DEBUG_TAG,"Title = " + this.title);
this.in_title = false;
}
else
if (this.in_callNumber) {
//set the foundCharacter to Hashtable
data.put("callNumber", this.callNumber);
//sList.setCallNumber(this.callNumber);
Log.d(MY_DEBUG_TAG,"Call Number = " + this.callNumber);
this.in_callNumber = false;
}
}
//add the hashtable into ArrayList
list.add(data);
}
有什么建议吗？
我没有时间完全阅读您的代码。。。
但这是一个简单的例子：
ListView myListView;
myListView = (ListView) findViewById(R.id.mylistview);
ArrayList<HashMap<String, String>> listItem = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map;
//load your data
String[][] items = database.getItems("Blog");
//check if the database was empty
if(items != null){
for(int i = 0; i < items[0].length; i++) {
map = new HashMap<String, String>();
map.put("pubdate", items[2][0]);
map.put("title", items[0][i]);
map.put("description", items[1][i]);
listItem.add(map);
}
//Creation of a SimpleAdapter to put items in your list (listitems) in your listview
// You need to have a xml file called list_full_news_item with elements
// called android:id="@+id/title" etc.
SimpleAdapter mSimpleAdaptor = new SimpleAdapter (this.getBaseContext(), listItem, R.layout.list_full_news_item,
new String[] {"pubdate", "title", "description"}, new int[] {R.id.itemPubdate, R.id.itemTitle, R.id.itemDescription});
//Assign to the listView the created adapter
myListView.setAdapter(mSimpleAdaptor);
}
希望这能帮助你理解。
您不应该使用SAX Parser，而应该使用简单XML库。它有@ElementMap注释正是为了这个目的。这将把你的整个问题变成一个注释和三行代码来读取XML。如果你想了解如何使用它的所有酷功能，请参阅我关于在android项目中包含库的博客文章，并参阅Simple教程。
编辑：我刚刚意识到我以前在您之前的一个问题中回答过这个问题。我已经不再试图说服您研究SimpleXML；但请停止在这里用五种不同的方式发布本质上完全相同的问题；人们已经帮助了你，给了你答案，引导你朝着正确的方向前进。现在是时候多读书、多试验、多学习了。