android - How to Check Login Status? -

i have login app. after login, if correct, want show tabview with:

• my stats
• upload photo
• mapview

this code login activity

public class loginactivity extends activity { /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.main);     string url, user, pwd, user_field, pwd_field;      url = "http://myurl.com/login/";      user_field = "username";     pwd_field = "password";     user = "myuser";     pwd = "mypass";      list<namevaluepair> mylist = new arraylist<namevaluepair>(2);     mylist.add(new basicnamevaluepair(user_field, user));      mylist.add(new basicnamevaluepair(pwd_field, pwd));      final httpparams params = new basichttpparams();     final httpclient client = new defaulthttpclient(params);     final httppost post = new httppost(url);     //final httpresponse end = null;     //string endresult = null;      button login_button = (button)findviewbyid(r.id.login_button);      try {         post.setentity(new urlencodedformentity(mylist));     } catch (unsupportedencodingexception e) {         // todo auto-generated catch block         e.printstacktrace();     }       login_button.setonclicklistener(new onclicklistener(){         public void onclick(view v) {             try {                 httpresponse response = client.execute(post);                 //httpresponse end = response;                 system.out.println(response.getstatusline());             } catch (clientprotocolexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             } catch (ioexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             }           }     }); } 

}

create login.php script can call on server , post authentication script , let script authentication , send result application.

so basically, application post authentication login.php script , script return application whether successful or not.