Android程序研发源码Android WeatherForecast应用源码.rar

package com.test; import java.io.InputStream; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpUriRequest; import org.apache.http.impl.client.DefaultHttpClient; import org.w3c.dom.Document; import org.w3c.dom.NodeList; import org.xml.sax.InputSource; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.widget.TextView; public class WeatherForecast extends Activity { public TextView tv; public Handler h; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); tv = new TextView(this); tv.setText("Loading..."); setContentView(tv); h = new Handler() { public void handleMessage(Message msg) { tv.setText((String) msg.obj); } }; new Thread() { public void run() { try { String weather = ""; String url = "http://www.google.com/ig/api?&weather=beijing"; DefaultHttpClient client = new DefaultHttpClient(); HttpUriRequest req = new HttpGet(url); HttpResponse resp = client.execute(req); HttpEntity ent = resp.getEntity(); InputStream stream = ent.getContent(); DocumentBuilder b = DocumentBuilderFactory.newInstance() .newDocumentBuilder(); Document d = b.parse(new InputSource(stream)); NodeList n = d.getElementsByTagName("forecast_conditions"); for (int i = 0; i < n.getLength(); i++) { weather += n.item(i).getChildNodes().item(0) .getAttributes().item(0).getNodeValue(); weather += ", "; weather += (Integer .parseInt(n.item(i).getChildNodes().item(1) .getAttributes().item(0).getNodeValue()) - 32) * 5 / 9; weather += " ~ "; weather += (Integer .parseInt(n.item(i).getChildNodes().item(2) .getAttributes().item(0).getNodeValue()) - 32) * 5 / 9; weather += ", "; weather += n.item(i).getChildNodes().item(4) .getAttributes().item(0).getNodeValue(); weather += "\n"; } Message msg = h.obtainMessage(1, 1, 1, weather); h.sendMessage(msg); } catch (Exception e) { e.printStackTrace(); } } }.start(); } }