dwhvkrtveb
New Member
I use the following class to send an http request and get the returning XML response in my android project.But the UnknownHostException is thrown when it trying to send the request.Please help me on this problem. \[code\]import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.StatusLine;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.xml.sax.Attributes;import org.xml.sax.ContentHandler; import org.xml.sax.Locator;import org.xml.sax.SAXException;import android.os.AsyncTask;import android.util.Xml;class RequestTask extends AsyncTask<String, String, String>{@Overrideprotected String doInBackground(String... uri) { HttpClient httpclient = new DefaultHttpClient(); HttpResponse response; String responseString = null; try { response = httpclient.execute(new HttpGet(uri[0])); StatusLine statusLine = response.getStatusLine(); if(statusLine.getStatusCode() == HttpStatus.SC_OK){ ByteArrayOutputStream out = new ByteArrayOutputStream(); response.getEntity().writeTo(out); out.close(); responseString = out.toString(); } else{ //Closes the connection. response.getEntity().getContent().close(); throw new IOException(statusLine.getReasonPhrase()); } } catch (ClientProtocolException e) { //TODO Handle problems.. } catch (IOException e) { String s=e.toString(); System.out.println(s); //TODO Handle problems.. } return responseString;}@Overrideprotected void onPostExecute(String result) { super.onPostExecute(result); //Do anything with response.. System.out.println(result);}}\[/code\]