问带多个CheckBox的安卓ExpandableListView

EN

 final Button btnLogin = new Button(this);
  btnLogin.setText("Login");
  btnLogin.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
  btnLogin.setGravity(Gravity.CENTER);
  btnLogin.setOnClickListener(new View.OnClickListener() {
    public void onClick(View view) {
      new GetDataFromServlet().execute(NetworkActivity.this);
      Log.i(getClass().getSimpleName(), "button was pressed");
    }
  });