我想通过 SAX Parser 解析它并通过 url 加载图像并将其传递给下一个要显示的活动。但是,如果有任何人可以帮助我或给我一些可重用的代码,我将不胜感激。这是我的 xml 文件。这是我解析的数据类和适配器类。现在我想解析数据,如(日期、成本、描述、图像)并将所有内容放入字符串到它们各自的标签中,并在需要时将其传递给下一个活动。请帮助我还需要在图像上实现共享,所以我需要来自 xml 的图像的 url
解析数据类
公共类 ParseData 扩展 DefaultHandler { boolean title , cost , pubDate , link = false;
StringBuffer stringTitle , stringCost , stringPubdate , stringLink = null;
ArrayList<String> arrtitle = new ArrayList<String>();
ArrayList<String> arrcost = new ArrayList<String>();
ArrayList<String> arrpubDate = new ArrayList<String>();
ArrayList<String> arrlink = new ArrayList<String>();
//---------START ELEMENT----------//
@Override
public void startElement(String uri , String localName , String qName , Attributes attributes) throws SAXException
{
super.startElement(uri, localName, qName, attributes);
if(localName.equalsIgnoreCase("title"))
{
title = true;
}else if(localName.equalsIgnoreCase("cost"))
{
cost = true;
}else if(localName.equalsIgnoreCase("pubDate"))
{
pubDate = true;
}else if(localName.equalsIgnoreCase("link"))
{
link = true;
}
}
//--------END ELEMENT----------//
@Override
public void endElement(String uri , String localName , String qName) throws SAXException
{
super.endElement(uri, localName, qName);
if(localName.equalsIgnoreCase("title"))
{
title = false;
}else if(localName.equalsIgnoreCase("cost"))
{
cost = false;
}else if(localName.equalsIgnoreCase("pubDate"))
{
pubDate = false;
}else if(localName.equalsIgnoreCase("link"))
link = false;
}
@Override
public void characters(char[] ch, int start, int length)throws SAXException
{
super.characters(ch, start, length);
if(title)
{
stringTitle = new StringBuffer("");
title_flag = true;
}
if(cost)
{
stringCost = new StringBuffer("");
cost_flag = true;
}
if(pubDate)
{
stringPubdate = new StringBuffer("link");
pubDate_flag = true;
}
if(link)
{
stringLink = new StringBuffer("");
link_flag = true;
}
}
}
连接器类
公共类 BindDataAdapter 扩展 BaseAdapter {
ArrayList<String> title;
ArrayList<String> cost;
ArrayList<String> pubDate;
LayoutInflater inflater;
//---------DEFAULT CONSTRUCTOR-----------//
public BindDataAdapter()
{
}
//-------PARAMETERIZED CONSTRUCTOR------//
public BindDataAdapter(Activity activity , ArrayList<String> title , ArrayList<String> cost , ArrayList<String> pubDate)
{
this.title = title;
this.cost = cost;
this.pubDate = pubDate;
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount()
{
return title.size();
}
@Override
public Object getItem(int position)
{
return position;
}
@Override
public long getItemId(int position)
{
return position;
}
@Override
public View getView(int position , View convertView , ViewGroup parent)
{
if(convertView == null)
{
convertView = inflater.inflate(R.layout.list_row , null);
}
TextView textViewtitle = (TextView) convertView.findViewById(R.id.type);
TextView textViewcost = (TextView) convertView.findViewById(R.id.cost);
TextView textViewdate = (TextView) convertView.findViewById(R.id.date);
//----I coudnot put text view using setText----//
return convertView;
}
}
这是我的 MainActivity 类
公共类 MainActivity 扩展 Activity {
static final String URLxml = "http://78.46.34.27/kapapps/transaction.xml";
String line = null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ListView listView = (ListView) findViewById(R.id.listview);
try
{
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser saxParser = factory.newSAXParser();
XMLReader reader = saxParser.getXMLReader();
URL sourceUrl = new URL(URLxml);
ParseData data = new ParseData();
reader.setContentHandler(data);
reader.parse(new InputSource(sourceUrl.openStream()));
BindDataAdapter bindDataAdapter = new BindDataAdapter(this , data.title , data.cost , data.pubDate);
listView.setAdapter(bindDataAdapter);
} catch (ParserConfigurationException e)
{
e.printStackTrace();
} catch (SAXException e)
{
e.printStackTrace();
} catch (MalformedURLException e)
{
e.printStackTrace();
} catch (IOException e)
{
e.printStackTrace();
}
}
}