Activity

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
import zhao.com.modelviewp.R;
import zhao.com.modelviewp.bean.Result;
import zhao.com.modelviewp.bean.User;
import zhao.com.modelviewp.presenter.MyPresenter;
import zhao.com.modelviewp.view.IBaseView;

public class MainActivity extends AppCompatActivity {
TextView textView;
private MyPresenter myPresenter;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //獲取控制元件
    textView = findViewById(R.id.textView);

    //建立presenter
    myPresenter = new MyPresenter();
    //繫結IBaseView
    myPresenter.bindBaseView(new LoginCall());
}
//button點選事件
public void login(View view){
    //呼叫presenter層
    myPresenter.login("張三","123");
}
//實現view層IBaseView介面接收presenter處理資料
class LoginCall implements IBaseView<User>{

    //請求成功
    @Override
    public void success(User data) {
        textView.setText(data.getName()+"  "+data.getAge()+"  "+data.getToken());
    }
    //請求失敗
    @Override
    public void fail(Result result) {

        textView.setText(result.getMsg());
    }
}
@Override
protected void onDestroy() {
    super.onDestroy();

    //解除繫結,防止記憶體碎片無法釋放
    myPresenter.unbindBaseView();
}
}
 

View層 IBaseView 介面類

import zhao.com.modelviewp.bean.Result;

public interface IBaseView<T> {

void success(T t);
void fail(Result result);

}

Presenter層 MyPresenter

import android.os.Handler;
import android.os.Message;
import zhao.com.modelviewp.bean.Result;
import zhao.com.modelviewp.bean.User;
import zhao.com.modelviewp.model.LoginModel;
import zhao.com.modelviewp.view.IBaseView;

public class MyPresenter {

private IBaseView iBaseView;
private Handler handler = new Handler(){
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        Result<User> userResult = (Result<User>) msg.obj;
        if (userResult.getStatus() == 0) {
            iBaseView.success(userResult.getT());
        }else {
            iBaseView.fail(userResult);
        }
    }
};

public void login(final String name, final String pwd) {
    
    //建立子執行緒請求model層資料
    new Thread(new Runnable() {
        @Override
        public void run() {
            //呼叫model層資料
            Result<User> userResult = new LoginModel().loginData(name,pwd);

            //通過Handler傳送出去
            Message message = handler.obtainMessage();
            message.obj = userResult;
            handler.sendMessage(message);

        }
    }).start();

}

//繫結IBaseView
public void bindBaseView(IBaseView iBaseView) {

    this.iBaseView = iBaseView;
}
//解除繫結
public void unbindBaseView() {
    iBaseView = null;
}
}
 

Model層 LoginModel

import zhao.com.modelviewp.bean.Result;
import zhao.com.modelviewp.bean.User;

public class LoginModel {

public Result<User> loginData(String name, String pwd) {

    Result<User> userResult = new Result<>();

    userResult.setStatus(0);
    userResult.setMsg("請求成功!");

    User user = new User();

    user.setId(100);
    user.setAge(20);
    user.setName("啊哈");
    user.setToken("呃呃呃");
    userResult.setT(user);
    return userResult;

}
}
 

封裝類 Result

public class Result<T> {

private int status;
private String msg;
private T t;

public int getStatus() {
    return status;
}

public void setStatus(int status) {
    this.status = status;
}

public String getMsg() {
    return msg;
}

public void setMsg(String msg) {
    this.msg = msg;
}

public T getT() {
    return t;
}

public void setT(T t) {
    this.t = t;
}
}

User

public class User {

private int id;
private String name;
private int age;
private String token;

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public int getAge() {
    return age;
}

public void setAge(int age) {
    this.age = age;
}

public String getToken() {
    return token;
}

public void setToken(String token) {
    this.token = token;
}
}