MVP 一个简单的登录+判断

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activity_main

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:orientation="vertical"    android:layout_height="match_parent">    <EditText        android:id="@+id/zh"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="请输入账号" />    <EditText        android:id="@+id/mm"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="请输入密码 " />    <Button        android:id="@+id/dl"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="登录" /></LinearLayout>

MainActivity.java

package com.mvp;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;import butterknife.BindView;import butterknife.ButterKnife;import butterknife.OnClick;public class MainActivity extends AppCompatActivity implements LoginView{    @BindView(R.id.zh)    EditText zh;    @BindView(R.id.mm)    EditText mm;    @BindView(R.id.dl)    Button dl;    private LoginPresenter presenter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.bind(this);        presenter = new LoginPresenter(this);    }    @OnClick(R.id.dl)    public void onViewClicked() {        //点击登录,调用LoginPresenter中的login方法        presenter.login(zh.getText().toString(),mm.getText().toString());    }    @Override    public void zhEmpty() {        Toast.makeText(MainActivity.this,"账号不能为空",Toast.LENGTH_SHORT).show();    }    @Override    public void mmEmpty() {        Toast.makeText(MainActivity.this,"密码不能为空",Toast.LENGTH_SHORT).show();    }    @Override    public void loginSuccess(Object object) {        runOnUiThread(new Runnable() {            @Override            public void run() {                Toast.makeText(MainActivity.this,"登录成功",Toast.LENGTH_SHORT).show();            }        });    }    @Override    public void loginFailed(int code) {        //Toast.makeText(MainActivity.this,"登录失败",Toast.LENGTH_SHORT).show();        runOnUiThread(new Runnable() {            @Override            public void run() {                Toast.makeText(MainActivity.this,"登录失败",Toast.LENGTH_SHORT).show();            }        });    }    //页面关闭时调用    @Override    protected void onDestroy() {        super.onDestroy();        //调用LoginPresenter 里的detach方法,清空数据        presenter.detach();    }}

LoginView.java

package com.mvp;/** * Created by lenovo on 2017/11/02. */public interface LoginView {    // 手机号码为空    public void zhEmpty();    //    密码为空    public void mmEmpty();    // 登陆成功    public void loginSuccess(Object object);    //  登陆失败    public void loginFailed(int code);}LoginModel.java
package com.mvp;import java.io.IOException;import okhttp3.Call;import okhttp3.Callback;import okhttp3.FormBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;import okhttp3.Response;/** * Created by lenovo on 2017/11/02. */public class LoginModel {    public void login(String zh, String mm, final ModelCallBack callBack){        OkHttpClient okHttpClient = new OkHttpClient();        RequestBody body = new FormBody.Builder().add("pscid","39").add("page","1").build();        Request request = new Request.Builder().url("http://120.27.23.105/product/getProducts").post(body).build();        okHttpClient.newCall(request).enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                callBack.failed(1);            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String result = response.body().string();                callBack.success(result);            }        });    }    interface ModelCallBack{        public void success(String data);        public void failed(int code);    }}



LoginPresenter.java
package com.mvp;import android.text.TextUtils;/** * Created by lenovo on 2017/11/02. */public class LoginPresenter {    private LoginView loginView;    private LoginModel loginModel;    public LoginPresenter(LoginView loginView){        this.loginView = loginView;        loginModel = new LoginModel();    }    //清除数据    public void detach(){        this.loginView = null;    }    public void login(String zh,String mm){        if (TextUtils.isEmpty(zh)){            loginView.zhEmpty();            return;        }        if (TextUtils.isEmpty(mm)){            loginView.mmEmpty();            return;        }        loginModel.login(zh,mm, new LoginModel.ModelCallBack() {            @Override            public void success(String data) {                loginView.loginSuccess(data);            }            @Override            public void failed(int code) {                loginView.loginFailed(code);            }        });    }}

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