public class Main extends Activity{

    EditText username, password;
    Button login;
    CheckBox rememberme;
    SQLiteDatabase sq;
    TextView gotoReg;
    static boolean TrueOrNot = true;
    static String TAG = Main.class.getSimpleName();
    public static XMPPConnection conn;
    VCard card = null;
    Bitmap Myimage;
    static String getUsername;
    static String getPassword;
    LoginDatabaseHandle re;
    SharedPreferences pre;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.startlayout);

        cleaningup();

        login.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                new LoginTask().execute();
            }
        });

    private void cleaningup() {


        login = (Button) findViewById(R.id.buttonlogin);
        // rememberme = (CheckBox) findViewById(R.id.checkBoxlogin);

    }

    public class LoginTask extends AsyncTask<Void, Void, Void> {
        private ProgressDialog loading;


        @Override
        protected void onPreExecute() {
            loading = ProgressDialog.show(Main.this, "", "Loading...");
        }

        @Override
        protected Void doInBackground(Void... params) {

            username = (EditText) findViewById(R.id.editloginusername);
            password = (EditText) findViewById(R.id.editloginpassword);
            password.setInputType(InputType.TYPE_CLASS_TEXT
                    | InputType.TYPE_TEXT_VARIATION_PASSWORD);
            // setup XMPP connection
            ConnectionConfiguration config = new ConnectionConfiguration(
                    "chat.facebook.com", 5222, "chat.facebook.com");
            config.setDebuggerEnabled(true);
            config.setSASLAuthenticationEnabled(true); // TRUE for fb
            conn = new XMPPConnection(config);

            try {
                // attempt login
                conn.connect();
                SASLAuthentication.supportSASLMechanism("PLAIN", 0);
                conn.login(username.getText().toString(), password.getText().toString());
                Presence presence = new Presence(Presence.Type.available);
                conn.sendPacket(presence);
                // AsmackChat.setConnection(conn);

                Log.d("TRACE", "isAuthenticated? " + conn.isAuthenticated());

                if (conn.isAuthenticated()) {

                    Intent i = new Intent(Main.this, BuddyList.class);
                    startActivity(i);
                    loading.dismiss();

                } else {

                    Toast.makeText(getApplicationContext(),
                            " Username or Password incorrect. Try again !!",
                            Toast.LENGTH_SHORT).show();
                }
            } catch (Exception e) {
                Log.d("EXCEPTION", e.toString());
            }

            return null;
        }

    }

}