Android——XUtils3实现登录和注册页面校验

灰太狼 2022-06-06 07:17 225阅读 0赞

本篇是实现app登录和注册校验的操作

**案例图：**

**![Center][]![Center 1][]**

**接口地址：**

1. 登录接口

[http://120.27.23.105/user/login][http_120.27.23.105_user_login]

请求参数：

mobile手机号  必传参数

password密码  必传参数

2. 注册接口

[http://120.27.23.105/user/reg][http_120.27.23.105_user_reg]

请求参数：

mobile手机号  必传参数

password密码  必传参数

**案例：实现登录注册功能**

1. 新建Android Studio项目，实现登录和注册页面效果

1） 点击登录按钮实现登录接口，登陆成功后跳转到商品列表页面

2） 点击注册按钮跳转到注册页面

2. 集成xUtils，并用xUtils请求数据

**3. **实现如图注册页面逻辑

1） 本地使用正则表达式校验手机号为合法手机号

2） 本地校验密码不能少于六位数

3） 点击左上角返回按钮，跳转到登录页面

**4） ****实现注册接口****，注册成功后，**toast**提示“注册成功”****并跳转到登录页面**

**5） 如果手机号已经被注册，提示“**手机号已经被注册**”**

4. 实现登录页面逻辑

1） 使用正则表达式校验手机号为合法手机号

2） 校验密码不能少于六位数

**3） ****实现登录接口****，登录成功，**toast**提示“登录成功”****，如果用户名或密码错误，**toast**提示“用户名或密码错误”**

**代码：**

**MainActivity**

package com.bawei.com.myapplication;
    
    import android.content.Intent;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.Toast;
    
    import com.google.gson.Gson;
    
    import org.xutils.common.Callback;
    import org.xutils.http.RequestParams;
    import org.xutils.x;
    
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    public class MainActivity extends AppCompatActivity {
    
        private Button btn_login;
        private Button btn_regist;
        private EditText et_mobile;
        private EditText et_password;
    
        @Override protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            //查找控件 btn_login = findViewById(R.id.btn_login);
            btn_regist = findViewById(R.id.btn_regist);
            et_mobile = findViewById(R.id.et_mobile);
            et_password = findViewById(R.id.et_password);
            btn_regist.setOnClickListener(new View.OnClickListener() {
                @Override public void onClick(View view) {
                    Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                    startActivity(intent);
    
                }
            });
            btn_login.setOnClickListener(new View.OnClickListener() {
                @Override public void onClick(View view) {
                    String mobile = et_mobile.getText().toString().trim();
                    String password = et_password.getText().toString().trim();
                    //判断输入的内容是否为phone boolean b = isPhoneNumber(mobile);
    
                    if (mobile.isEmpty() || password.isEmpty()) {
                        Toast.makeText(MainActivity.this, "用户名/密码不能为空", Toast.LENGTH_SHORT).show();
                    } else if (!b) {
                        Toast.makeText(MainActivity.this, "手机号不合法", Toast.LENGTH_SHORT).show();
                    } else if (password.length() < 6) {
                        Toast.makeText(MainActivity.this, "密码不能少于六位数", Toast.LENGTH_SHORT).show();
                    } else {
    
                        login(mobile, password);
                    }
                }
            });
        }
        private boolean isPhoneNumber(String phoneStr) {
            //定义电话格式的正则表达式 String regex = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
            //设定查看模式 Pattern p = Pattern.compile(regex);
            //判断Str是否匹配，返回匹配结果 Matcher m = p.matcher(phoneStr);
            return m.find();
        }
        private void login(String mobile,String password){
    
            RequestParams params = new RequestParams("http://120.27.23.105/user/login");
            params.addQueryStringParameter("mobile",mobile);
            params.addQueryStringParameter("password",password);
            x.http().get(params, new Callback.CacheCallback<String>() {
                @Override public void onSuccess(String result) {
                    //成功 Gson gson = new Gson();
                    LoginBean loginBean = gson.fromJson(result, LoginBean.class);
                    Toast.makeText(MainActivity.this,loginBean.getMsg(), Toast.LENGTH_SHORT).show();
                    if (loginBean.getCode().equals("0")){
                        Intent intent = new Intent(MainActivity.this, Main3Activity.class);
                        startActivity(intent);
                    }
                }
    
    
                @Override public void onError(Throwable ex, boolean isOnCallback) {
    
                }
    
                @Override public void onCancelled(CancelledException cex) {
    
                }
    
                @Override public void onFinished() {
    
                }
    
                @Override public boolean onCache(String result) {
                    return false;
                }
            });
        }
    }

Main2Activity

package com.bawei.com.myapplication;
    
    import android.content.Intent;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.Toast;
    
    import com.google.gson.Gson;
    
    import org.xutils.common.Callback;
    import org.xutils.http.RequestParams;
    import org.xutils.x;
    
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    public class Main2Activity extends AppCompatActivity {
    
        private EditText et_mobile;
        private EditText et_password;
        private Button btn_regist;
        @Override protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main2);
            Intent intent = getIntent();
            et_mobile = findViewById(R.id.et_mobile);
            et_password = findViewById(R.id.et_password);
            btn_regist = findViewById(R.id.btn_regist);
            btn_regist.setOnClickListener(new View.OnClickListener() {
                @Override public void onClick(View view) {
                    String mobile = et_mobile.getText().toString().trim();
                    String password = et_password.getText().toString().trim();
                    //判断输入的内容是否为phone boolean b = isPhoneNumber(mobile);
                    if (mobile.isEmpty() || password.isEmpty()) {
                        Toast.makeText(Main2Activity.this, "用户名/密码不能为空", Toast.LENGTH_SHORT).show();
                    } else if (!b) {
                        Toast.makeText(Main2Activity.this, "手机号不合法", Toast.LENGTH_SHORT).show();
                    } else if (password.length() < 6) {
                        Toast.makeText(Main2Activity.this, "密码不能少于六位数", Toast.LENGTH_SHORT).show();
                    } else {
                        register(mobile, password);
                    }
                }
            });
        }
        private boolean isPhoneNumber(String phoneStr) {
            //定义电话格式的正则表达式 String regex = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
            //设定查看模式 Pattern p = Pattern.compile(regex);
            //判断Str是否匹配，返回匹配结果 Matcher m = p.matcher(phoneStr);
            return m.find();
        }
        private void register(String mobile,String password){
            RequestParams params = new RequestParams("http://120.27.23.105/user/reg");
            params.addQueryStringParameter("mobile",mobile);
            params.addQueryStringParameter("password",password);
            x.http().get(params, new Callback.CacheCallback<String>() {
                @Override public void onSuccess(String result) {
                    //成功 Gson gson = new Gson();
                    RegistBean registBean = gson.fromJson(result, RegistBean.class);
    
                    //如果注册成功就返回登录页面 Toast.makeText(Main2Activity.this,registBean.getMsg(), Toast.LENGTH_SHORT).show();
                    if (registBean.getCode().equals("0")){
                        finish();
                    }
                }
    
    
                @Override public void onError(Throwable ex, boolean isOnCallback) {
    
                }
    
                @Override public void onCancelled(CancelledException cex) {
    
                }
    
                @Override public void onFinished() {
    
                }
    
                @Override public boolean onCache(String result) {
                    return false;
                }
            });
        }
    }

创建Application

package com.bawei.com.myapplication;
    
    import android.app.Application;
    
    import org.xutils.x;
    
    /** * Created by Wangrx on 2017/10/31. */ public class RegistApplication extends Application{
        public void onCreate() {
            super.onCreate();
     x.Ext.init(this);
     x.Ext.setDebug(BuildConfig.DEBUG); }}

activity\_main.xml

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 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="com.bawei.com.myapplication.MainActivity">
    
        <EditText android:id="@+id/et_mobile"
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="64dp"
            android:hint="请输入手机号"
            android:inputType="number" />
    
        <EditText android:id="@+id/et_password"
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_below="@id/et_mobile"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="10dp"
            android:hint="请输入密码"
            android:inputType="textPassword" />
        <Button android:id="@+id/btn_login"
            android:layout_width="100dp"
            android:layout_height="wrap_content"
            android:text="登录"
            android:layout_below="@id/et_password"
            android:layout_marginLeft="70dp"
            />
        <Button android:id="@+id/btn_regist"
            android:layout_width="100dp"
            android:layout_height="wrap_content"
            android:text="注册"
            android:layout_below="@id/et_password"
            android:layout_toRightOf="@id/btn_login"
            />
    </RelativeLayout>

activity\_main2.xml

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 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="com.bawei.com.myapplication.Main2Activity">
        <EditText android:id="@+id/et_mobile"
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="64dp"
            android:hint="请输入手机号"
            android:inputType="number" />
    
        <EditText android:id="@+id/et_password"
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_below="@id/et_mobile"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="10dp"
            android:hint="请输入密码"
            android:inputType="textPassword" />
        <Button android:id="@+id/btn_regist"
            android:layout_width="200dp"
            android:layout_height="wrap_content"
            android:text="立即注册"
            android:textColor="@color/colorPrimary"
            android:layout_below="@id/et_password"
            android:layout_centerHorizontal="true"
    
            />
    </RelativeLayout>

添加权限：

<uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

添加依赖：

implementation 'com.google.code.gson:gson:2.8.2'
    implementation 'org.xutils:xutils:3.5.0'

[Center]: https://img-blog.csdn.net/20171102133225810?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQveHk4MTk5/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: /images/20220606/03a9080b5e124dbd9d7cc97066227aee.png
[http_120.27.23.105_user_login]: http://120.27.23.105/user/login
[http_120.27.23.105_user_reg]: http://120.27.23.105/user/reg