android解析xml文件 Android DOM解析XML之全球实时地震信息列表
public class HttpGet extends Activity { private ListView list; EarthQuakeInfo selectedQuake; ArrayAdapter adapter; ArrayList infoList=new ArrayList(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.main); //设置listView的内容为infoList list=(ListView)this.findViewById(R.id.list); adapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1,infoList); //设置ListView的适配器为adapter list.setAdapter(adapter); getInfo();//获得infoList的具体内容。 } private void getInfo(){ URL url; try{ String feed=getString(R.string.feed); url=new URL(feed); URLConnection connection=url.openConnection(); HttpURLConnection httpConnection=(HttpURLConnection)connection; int responseCode=httpConnection.getResponseCode(); if(responseCode==HttpURLConnection.HTTP_OK){ InputStream in=httpConnection.getInputStream(); DocumentBuilderFactory dbfactory=DocumentBuilderFactory.newInstance(); DocumentBuilder db=dbfactory.newDocumentBuilder(); //解析地震feed Document dom=db.parse(in); Element docEle=dom.getDocumentElement(); //清空旧的地震信息 infoList.clear(); //获得地震信息列表 NodeList nl=docEle.getElementsByTagName("entry"); if(nl!=null&&nl.getLength()>0){ for(int i=0;i<nl.getLength();i++){ Element entry=(Element)nl.item(i); Element title=(Element)entry.getElementsByTagName("title").item(0); Element geo=(Element)entry.getElementsByTagName("georss:point").item(0); Element when=(Element)entry.getElementsByTagName("updated").item(0); String details=title.getFirstChild().getNodeValue(); String point=geo.getFirstChild().getNodeValue(); String date=when.getFirstChild().getNodeValue(); SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss'Z'"); Date qdate=new GregorianCalendar(0,0,0).getTime(); try{ qdate=sdf.parse(date); }catch (Exception e) { e.printStackTrace();// TODO: handle exception } String[] location=point.split(" "); Location loc=new Location("dummyGPS"); loc.setLatitude(Double.parseDouble(location[0])); loc.setLongitude(Double.parseDouble(location[1])); String magnitudeString=details.split(" ")[1]; int end=magnitudeString.length()-1; double magnitude=Double.parseDouble(magnitudeString.substring(0,end)); details=details.split(",")[1].trim(); EarthQuakeInfo info=new EarthQuakeInfo(qdate,details,loc,magnitude); //处理地震信息 newEntry(info); } } } }catch (Exception e) { // TODO: handle exception } } private void newEntry(EarthQuakeInfo info){ infoList.add(info); adapter.notifyDataSetChanged(); } public class EarthQuakeInfo{ public Date date; public String details; public Location location; public double magnitude; public EarthQuakeInfo(Date d,String de,Location loc,double mag){ this.date=d; this.details=de; this.location=loc; this.magnitude=mag; } @Override public String toString(){ SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd' 'hh:mm:ss"); return sdf.format(date)+"\n里氏"+magnitude+"级"+details+"地点"+location; } } }
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