Android中如何利用MVP实现登录注册功能

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model包：

import com.bwei.mvps.bean.UserBean;public interface IUserModel { void setFirstName(String firstName); void setLastName(String lastName); String getFirstName(); String getLastName(); //根据id获取对象 UserBean load(int id);}

import android.util.Log;import com.bwei.mvps.bean.UserBean;public class UserModel implements IUserModel { @Override public void setFirstName(String firstName) { Log.i("xxx", firstName); } @Override public void setLastName(String lastName) { Log.i("xxx", lastName); } @Override public String getFirstName() { return null; } @Override public String getLastName() { return null; } @Override public UserBean load(int id) { //查询数据库或联网获取数据 Log.i("fff", id + ""); return new UserBean("张", "三"); }}

View包

public interface UserView { void setFirstName(String firstName); void setLastName(String lastName); int getId(); String getFirstName(); String getLastName();}

presenter包：

import android.util.Log;import com.bwei.mvps.MainActivity;import com.bwei.mvps.bean.UserBean;import com.bwei.mvps.model.IUserModel;import com.bwei.mvps.model.UserModel;import com.bwei.mvps.view.UserView;public class UserPresenter { private UserView userview; private final IUserModel iUserModel; public UserPresenter(UserView userview) { this.userview = userview; iUserModel = new UserModel(); } //保存数据 public void saveUser(int id, String firstName, String lastName) { UserBean userBean = iUserModel.load(id); Log.i("sss", "id:" + id + ",firstName:" + firstName + ",lastName:" + lastName); } //查询数据 public void find(int id) { UserBean userBean = iUserModel.load(id); String firstName = userBean.getFirstName(); String lastName = userBean.getLastName(); userview.setFirstName(firstName); userview.setLastName(lastName); Log.i("aaa", "id:" + id + ",firstName:" + firstName + ",lastName:" + lastName); }}

XML

Mactivity

import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import com.bwei.mvps.presenter.UserPresenter;import com.bwei.mvps.view.UserView;public class MainActivity extends AppCompatActivity implements View.OnClickListener, UserView { private EditText et_id; private EditText et_first_name; private EditText et_last_name; private Button bt_login; private Button bt_register; private UserPresenter userPresenter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //找控件 et_id = (EditText) findViewById(R.id.et_id); et_first_name = (EditText) findViewById(R.id.et_first_name); et_last_name = (EditText) findViewById(R.id.et_last_name); bt_login = (Button) findViewById(R.id.bt_login); bt_register = (Button) findViewById(R.id.bt_register); bt_login.setOnClickListener(this); bt_register.setOnClickListener(this); //声明UserPresenter userPresenter = new UserPresenter(this); } @Override public void onClick(View view) { switch (view.getId()) {  case R.id.bt_register://保存数据  userPresenter.saveUser(getId(), getFirstName(), getLastName());  break;  case R.id.bt_login:  userPresenter.find(getId());  break; } } @Override public void setFirstName(String firstName) { et_first_name.setText(firstName); } @Override public void setLastName(String lastName) { et_last_name.setText(lastName); } @Override public int getId() { return new Integer(et_id.getText().toString()); } @Override public String getFirstName() { return et_first_name.getText().toString(); } @Override public String getLastName() { return et_last_name.getText().toString(); }}

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