-1
我正在一个应用程序，我需要保存用户会话..我试图检索用户ID，但不知何故代码我已经实现似乎并不工作.. 我想，当用户打开应用程序..该应用程序应该打开从用户离开它..并只是添加新的东西，它..就像在Facebook应用程序..尝试检索SessionId并试图保存用户会话
这里的代码..帮我解决这个问题..这里使用一个随机的网址“https://www.coursera.org/”
public class HttpGetTask extends AsyncTask<Void, Void, String>
{
String playCount;
private static final String eb = "https://www.coursera.org/";
DefaultHttpClient mClient;
@Override
protected String doInBackground(Void... params) {
// TODO Auto-generated method stub
mClient = new DefaultHttpClient();
HttpGet post1 = new HttpGet(eb);
try
{
HttpResponse response = mClient.execute(post1);
HttpEntity r_entity = response.getEntity();
String xmlString = EntityUtils.toString(r_entity);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder db = factory.newDocumentBuilder();
InputSource instream = new InputSource();
instream.setCharacterStream(new StringReader(xmlString));
org.w3c.dom.Document doc = db.parse(instream);
playCount = "sessionid";
NodeList nl = doc.getElementsByTagName("playCount");
for(int i = 0;i < nl.getLength();i++)
{
if(nl.item(i).getNodeType() == org.w3c.dom.Node.ELEMENT_NODE)
{
org.w3c.dom.Element nameElement = (org.w3c.dom.Element) nl.item(i);
playCount = nameElement.getFirstChild().getNodeValue().trim();
}
}
}
catch(ClientProtocolException e)
{
e.printStackTrace();
}
catch(DOMException e)
{
e.printStackTrace();
}
catch(IOException e)
{
e.printStackTrace();
}
catch(ParserConfigurationException e)
{
e.printStackTrace();
}
catch(SAXException e)
{
e.printStackTrace();
}
return playCount;
}
@Override
protected void onPostExecute(String result) {
SharedPreferences preferences = getSharedPreferences("com.example.tabsletssee", Context.MODE_PRIVATE);
preferences.edit().putString("Session",playCount).commit();
preferences.getString("Session", "");
super.onPostExecute(result);
}
}