Yahho weather から RSS データを取得しようとしましたが、コードが機能しませんでした。何が悪いのかわかりますか?私が使用した URL はhttp://weather.yahooapis.com/forecastrss?w=1062617&u=cです。私はプログラミングの初心者です。親切にアドバイスを求めてください。
ありがとう
以下は私のコーディングです。
CXActivity.java
public class CXActivity extends Activity {
/** Called when the activity is first created. */
ListView listview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RestClient rc = new RestClient();
//the account key might not work. Please insert your own set.
ArrayList<Weather> list1 = rc.getPlaces("", "");
int index = 3;
String[] listArray = new String[list1.size()];
StringBuilder sb = new StringBuilder();
int counter = 0;
for(int i = 1; i<list1.size(); i++)
{
sb.append("\n\nEntry #: " + i);
sb.append("\n" + "Title: \""+ list1.get(i).getTitle() + "\"");
sb.append("\n" + "Publish Date: \""+ list1.get(i).getPubDate() +"\"");
sb.append("\n" + "Condition: \""+ list1.get(i).getCondition()+"\"");
sb.append("\n" + "Forecast: \""+ list1.get(i).getForecast()+"\"");
listArray[counter] = sb.toString();
counter++;
sb.delete(0, sb.capacity());
}
listview=(ListView)findViewById(R.id.ListView01);
listview.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , listArray));
}
}
RestClient.java
public class RestClient
{
ArrayList weatherList;
//This is the function responsible to pull data from web service.
public ArrayList<Weather> getPlaces(String accountKey, String uniqueId)
{
weatherList = new ArrayList<Weather>();
try {
URL _url = new URL("http://weather.yahooapis.com/forecastrss?w=1062617&u=c");
URLConnection _urlConn = _url.openConnection();
_urlConn.addRequestProperty("AccountKey", accountKey);
_urlConn.addRequestProperty("UniqueUserID", uniqueId);
BufferedReader br = new BufferedReader(new InputStreamReader(_urlConn.getInputStream()));
String line = null;
StringBuilder strBuilder = new StringBuilder();
while ((line = br.readLine()) != null) {
strBuilder.append(line);
System.out.println(line);
}
String[] IProperties = strBuilder.toString().split("<m:properties>");
for (String str : IProperties)
{
Weather weather = new Weather();
weather.setTitle(Utils.getStringBetween(str, "<title>", "</<title>>"));
weather.setPubDate(Utils.getStringBetween(str, "<pubDate>", "</pubDate>"));
weather.setCondition(Utils.getStringBetween(str, "<yweather:condition>", "</yweather:condition>"));
weather.setForecast(Utils.getStringBetween(str, "<yweather:forecast>", "</yweather:forecast>"));
weatherList.add(weather);
}
}
catch (MalformedURLException ex)
{
ex.printStackTrace();
}
catch (IOException ex)
{
ex.printStackTrace();
}
catch (Exception ex)
{
ex.printStackTrace();
}
return weatherList;
}
//This is a helper function to get specific traffic data structure
public Weather getPlacesAtIndex(ArrayList<Weather> list, int index)
{
if(list.size() <= index) return null;
return list.get(index);
}
}
Utils.java
public class Utils {
//This functions get the xml data between the xml elements
public static String getStringBetween(String src, String start, String end)
{
StringBuilder sb = new StringBuilder();
int startIdx = src.indexOf(start) + start.length();
int endIdx = src.indexOf(end);
while(startIdx < endIdx)
{
sb.append("" + String.valueOf(src.charAt(startIdx)));
startIdx++;
}
return sb.toString();
}
}
天気.java
public class Weather {
String Title;
String PubDate;
String Condition;
String Forecast;
public String getTitle() {
return Title;
}
public void setTitle(String title) {
Title = title;
}
public String getPubDate() {
return PubDate;
}
public void setPubDate(String pubDate) {
PubDate = pubDate;
}
public String getCondition() {
return Condition;
}
public void setCondition(String condition) {
Condition = condition;
}
public String getForecast() {
return Forecast;
}
public void setForecast(String forecast) {
Forecast = forecast;
}
}