UserServiceImpl.java

@Override public void doLogin(final Context context, final String userName, String password) {
    UserInterface userNetworkService =
        JApplication.getNetworkManager().getServiceByClass(UserInterface.class);
    LoginRequest request = new LoginRequest();
    request.username = userName;
    request.password = password;
    JApplication.getNetworkManager()
        .async(context, Constant.LOGINING, userNetworkService.signin(request),
          new NetworkCallback<SignupResponse>(context) {
            @Override
            public void onSuccess(SignupResponse signupResponse) {
              ((JFragmentActivity) context).dialogHelper.dismissProgressDialog();
              sharedPreferenceHelper.saveLoginName(context, userName); //TODO 放到异步里面去做
              doAfterSignin(context, signupResponse);
            }
          });
  }