登录接口 - OkHttp的使用-请求 - 《安卓常用知识点》

登录接口的流程：
- 代码执行，请求发送到服务端，服务端调用数据库，返回数据，登录成功
一、学习OkHttp网址
- https://www.jianshu.com/p/d06382fd048c">https://www.jianshu.com/p/d06382fd048c
二、整体代码包
三、实现步骤：
四、整体代码
五、不导入包的方式
六、检查错误

登录接口的流程：

代码执行，请求发送到服务端，服务端调用数据库，返回数据，登录成功

一、学习OkHttp网址

https://www.jianshu.com/p/d06382fd048c

二、整体代码包

Ok.zip

三、实现步骤：

1.右击，选择Module

2.选择import gradle project，导入封装包。

3.找到对应包的位置

4.完成，显示该包

5.添加依赖implementation project(‘:wldlib’)

6.http在27以下都没办法请求，添加布局文件，使http和手机端兼容

7.在清单文件中添加请求的权限和兼容的权限

8.写出请求的页面布局

9.封装接口提供的数据

（1）封装code值和返回的数据

（2）使用内部类，封装data数据值

10.写出请求的方法，控件的绑定

四、整体代码

1.activity_main.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical"
    android:gravity="center">
    <EditText
        android:id="@+id/et_account"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入账号"
        />
    <EditText
        android:id="@+id/et_password"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入密码"
        android:layout_marginTop="20dp"
        />
    <Button
        android:id="@+id/btn_login"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="登录"
        android:layout_marginTop="20dp"
        android:background="#4CAF50"
        android:textSize="20sp"
        />
</LinearLayout>

2.BaseDataBean文件代码

package com.example.ok.bean;
public class BaseDataBean {
    private int code;
    private String msg;
    public int getCode() {
        return code;
    }
    public void setCode(int code) {
        this.code = code;
    }
    public String getMsg() {
        return msg;
    }
    public void setMsg(String msg) {
        this.msg = msg;
    }
}

3.UserInfoBean文件代码

package com.example.ok.bean;
public class UserInfoBean extends BaseDataBean{
    private DataBean data;
    public DataBean getData() {
        return data;
    }
    public void setData(DataBean data) {
        this.data = data;
    }
    public static class DataBean{
        private UserBean user;
        private UnitBean unit;
        public UserBean getUser() {
            return user;
        }
        public void setUser(UserBean user) {
            this.user = user;
        }
        public UnitBean getUnit() {
            return unit;
        }
        public void setUnit(UnitBean unit) {
            this.unit = unit;
        }
        public static class UserBean{
            private Integer id;
            private String username;
            private String password;
            private String phone;
            private String position;
            private Integer unit_id;
            public Integer getId() {
                return id;
            }
            public void setId(Integer id) {
                this.id = id;
            }
            public String getUsername() {
                return username;
            }
            public void setUsername(String username) {
                this.username = username;
            }
            public String getPassword() {
                return password;
            }
            public void setPassword(String password) {
                this.password = password;
            }
            public String getPhone() {
                return phone;
            }
            public void setPhone(String phone) {
                this.phone = phone;
            }
            public String getPosition() {
                return position;
            }
            public void setPosition(String position) {
                this.position = position;
            }
            public Integer getUnit_id() {
                return unit_id;
            }
            public void setUnit_id(Integer unit_id) {
                this.unit_id = unit_id;
            }
        }
        public static class UnitBean{
            private Integer id;
            private String unitname;
            private String declaration;
            private String logo;
            private Integer is_stop;
            public Integer getId() {
                return id;
            }
            public void setId(Integer id) {
                this.id = id;
            }
            public String getUnitname() {
                return unitname;
            }
            public void setUnitname(String unitname) {
                this.unitname = unitname;
            }
            public String getDeclaration() {
                return declaration;
            }
            public void setDeclaration(String declaration) {
                this.declaration = declaration;
            }
            public String getLogo() {
                return logo;
            }
            public void setLogo(String logo) {
                this.logo = logo;
            }
            public Integer getIs_stop() {
                return is_stop;
            }
            public void setIs_stop(Integer is_stop) {
                this.is_stop = is_stop;
            }
        }
    }
}

4.MainActivity文件代码

package com.example.ok;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.example.ok.bean.UserInfoBean;
import com.test.mldlib.okhttp.OKHttpCallBack;
import com.test.mldlib.okhttp.OKHttpUtils;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.OkHttpClient;
public class MainActivity extends AppCompatActivity {
    private EditText et_account;
    private EditText et_password;
    private TextView tv_date;
    private TextView tv_data;
    private Button btn_login;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }
    public void initView(){
        et_account=findViewById(R.id.et_account);
        et_password=findViewById(R.id.et_password);
        btn_login=findViewById(R.id.btn_login);
        tv_date=findViewById(R.id.tv_date);
        tv_data=findViewById(R.id.tv_data);
        btn_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            login(et_account.getText().toString().trim(),et_password.getText().toString().trim());
            }
        });
    }
    public void login(String account,String password){
        OKHttpUtils.newBuilder().url("http://zhdj.yiruoche.com/index.php/user/login?")
                .post()
                .addParam("phone",account)
                .addParam("password",password)
                .build()
                .enqueue(new OKHttpCallBack<UserInfoBean>() {
                    @Override
                    public void onSuccess(UserInfoBean userInfoBean) {
                        if (userInfoBean.getCode()==1){
                            Intent intent=new Intent();
                            intent.setClass(MainActivity.this,HomePageActivity.class);
                            startActivity(intent);
                        }
                        String msg = userInfoBean.getMsg();
              Toast.makeText(MainActivity.this, userInfoBean.getMsg(), Toast.LENGTH_SHORT).show();
                        tv_date.setText(msg);
                        tv_data.setText(userInfoBean.getData().getUser().getUsername());
                    }
                    @Override
                    public void onError(int code) {
                        super.onError(code);
                        Toast.makeText(MainActivity.this, "登录成功0", Toast.LENGTH_SHORT).show();
                    }
                    @Override
                    public void onFailure(Call call, IOException e) {
                        super.onFailure(call, e);
                        Toast.makeText(MainActivity.this, "登录成功1", Toast.LENGTH_SHORT).show();
                    }
                });
    }
}

5.network_security_config.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true"/>
</network-security-config>

6.activity_home_page.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".HomePageActivity"
    android:orientation="vertical"
    android:gravity="center">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="首页"
        android:textSize="60sp"
        />
</LinearLayout>

7.HomePageActivity文件代码

package com.example.ok;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class HomePageActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home_page);
    }
}

8.结果图：
（1）登录前

（2）登录时的页面跳转

（3）登录后返回的数据

五、不导入包的方式

OkHttpClient.zip

六、检查错误

 1.debug方式<br />![image.png](https://cdn.nlark.com/yuque/0/2021/png/1574587/1616483925284-a71344b5-db80-48df-a0ff-3d58b88f8d1a.png#align=left&display=inline&height=1012&margin=%5Bobject%20Object%5D&name=image.png&originHeight=1012&originWidth=1915&size=201792&status=done&style=none&width=1915)<br />2.网页的接口网址，输入用户名和密码<br />![image.png](https://cdn.nlark.com/yuque/0/2021/png/1574587/1616483998630-ef5213b0-e582-4ab5-b48c-9f68c1b0c46f.png#align=left&display=inline&height=988&margin=%5Bobject%20Object%5D&name=image.png&originHeight=988&originWidth=1756&size=365764&status=done&style=none&width=1756)