public interface ILoginView {
 String getUserName();
 String getUserPwd();
 void onSuccess(String code);
}

public interface IRequestLogin {
 void toLogin(String userName, String pwd, IRequestResult requestResult);
}

public interface IRequestResult {

 void onSuccess(String result);

 void onFailed(String result);

}

public class LoginAct extends AppCompatActivity implements ILoginView {

 private static final String TAG = "LoginAct";
 LoginPresenter loginPresenter = new LoginPresenter();

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  loginPresenter.tologin(this);
 }

 @Override
 public String getUserName() {
  return "userName";
 }

 @Override
 public String getUserPwd() {
  return "userPwd";
 }

 @Override
 public void onSuccess(String code) {
  Log.e(TAG, code);
 }

}

public class LoginModule implements IRequestLogin{

 @Override
 public void toLogin(String name, String pwd, IRequestResult requestResult) {
  requestResult.onSuccess("success->"+name+" "+pwd);
 }

}

public class LoginPresenter implements IRequestResult {
 private LoginModule loginModule;
 private ILoginView loginView;

 public void tologin(LoginAct loginAct) {
  loginView = loginAct;
  loginModule = new LoginModule();
  loginModule.toLogin(loginView.getUserName(), loginView.getUserName(), this);
 }

 @Override
 public void onSuccess(String result) {
  loginView.onSuccess(result);
 }

 @Override
 public void onFailed(String result) {

 }

}

public class BaseContract {
 public interface IBaseModule {
 }

 public interface IBasePresenter {
 }

 public interface IBaseView {
  void showToast(String msg);
 }
}

public abstract class BaseAct<V extends BaseContract.IBaseView,P extends BasePresenter> extends AppCompatActivity implements BaseContract.IBaseView {

 public P presenter;

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  presenter = initPresenter();

  if (presenter != null) {
   presenter.attatchWindow(initModule(),this);
  }

  initView();

 }

 protected abstract void initView();

 protected abstract P initPresenter();

 protected abstract BaseModule initModule();

 @Override
 protected void onDestroy() {
  super.onDestroy();
  presenter.detachWindow();
 }
}

public class BaseModule implements BaseContract.IBaseModule {
}

public class BasePresenter<M extends BaseModule, V extends BaseContract.IBaseView> {

 public M module;

 public V view;

 void attatchWindow(M m, V v) {
  this.module = m;
  this.view = v;
 }

 void detachWindow() {
  this.module = null;
  this.view = null;
 }

}

public class LoginContract {

 interface ILoginView extends BaseContract.IBaseView {

  String getName();

  String getPwd();

  void onLoginResult(String code);

 }

 public interface ILoginPresenter extends BaseContract.IBasePresenter {
  void getResult(LoginBean bean);
 }

 public interface ILoginModule extends BaseContract.IBaseModule {
  void toLogin(String name, String pwd, ILoginPresenter iLoginPresenter);
 }
}

public class LoginAct extends BaseAct<LoginContext.ILoginView, LoginPresenter> implements LoginContext.ILoginView {
 private static final String TAG = "LoginAct";

 @Override
 public void showToast(String msg) {

 }

 @Override
 protected void onResume() {
  super.onResume();
  presenter.toLogin();
 }

 @Override
 protected BaseModule initModule() {
  return new LoginModule();
 }

 @Override
 protected void initView() {
 }

 @Override
 protected LoginPresenter initPresenter() {
  return new LoginPresenter();
 }

 @Override
 public String getName() {
  return "name";
 }

 @Override
 public String getPwd() {
  return "pwd";
 }

 @Override
 public void onLoginResult(String code) {
  Log.e(TAG, code);

 }
}

public class LoginModule extends BaseModule implements LoginContract.ILoginModule {

 @Override
 public void toLogin(String name, String pwd, LoginContract.ILoginPresenter iLoginPresenter) {
  //网络操作，返回数据
  LoginBean loginBean = new LoginBean();
  loginBean.setCode(name + pwd);
  iLoginPresenter.getResult(loginBean);
 }

}

public class LoginPresenter extends BasePresenter<LoginModule, LoginAct> implements LoginContract.ILoginPresenter {

 public void toLogin() {

  module.toLogin(view.getName(), view.getPwd(), this);

 }

 @Override
 public void getResult(LoginBean bean) {
  view.onLoginResult(bean.getCode());
 }

}