第二阶段总和

<?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:id="@+id/activity_main"
    tools:context="com.example.myapplication.guan"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:id="@+id/txtOne"
        android:layout_width="385dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:text="关注的人"
        android:textSize="40dp"
        android:textColor="#EE6AA7"
        android:background="#eeeeee"
        />
    <ImageView
        android:id="@+id/iv_registeractivity_back"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:background="@drawable/shou"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:clickable="true"
        android:onClick="onClick"
        />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp"
        >
        <TextView android:id="@+id/tv_registeractivity_register"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修改" android:textColor="#fff"
            android:textSize="20dp"

            android:layout_centerVertical="true"
            android:layout_marginLeft="20dp" />
    </RelativeLayout> <LinearLayout
    android:id="@+id/ll_registeractivity_body"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_below="@+id/rl_registeractivity_top"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp" >
    <LinearLayout android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView android:id="@+id/tv_registeractivity_username"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="1."/>
        <EditText
            android:id="@+id/et_registeractivity_username"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="PDD"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/tv_registeractivity_password"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="2." />

        <EditText
            android:id="@+id/et_registeractivity_password"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginLeft="10dp"
            android:gravity="center_vertical"
            android:text="wjm"
            />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:id="@+id/tv_registeractivity_password2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="3."/>
        <EditText android:id="@+id/et_registeractivity_password2"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="坤坤"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="15dp"
        android:layout_marginTop="10dp"
        android:orientation="horizontal" />
    <Button
        android:id="@+id/bt_registeractivity_register"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginLeft="5dp"
        android:textColor="#fff"
        android:text="baby，看看你都关注了谁"
        android:onClick="onClick"
        android:layout_marginTop="40dp" />
</LinearLayout>
</LinearLayout>

<?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:id="@+id/activity_main"
    tools:context="com.example.myapplication.lian"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:id="@+id/txtTwo"
        android:layout_width="385dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:text="联系客服"
        android:textSize="40dp"
        android:textColor="#EE6AA7"
        android:background="#eeeeee"
        />

    <ImageView
        android:id="@+id/iv_registeractivity_back"
        android:layout_width="18dp"
        android:layout_height="29dp"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:background="@drawable/shou"
        android:clickable="true"
        android:onClick="onClick" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp"
        >
        <TextView android:id="@+id/tv_registeractivity_register"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修改" android:textColor="#fff"
            android:textSize="20dp"

            android:layout_centerVertical="true"
            android:layout_marginLeft="20dp" />
    </RelativeLayout> <LinearLayout
    android:id="@+id/ll_registeractivity_body"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_below="@+id/rl_registeractivity_top"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp" >
    <LinearLayout android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView android:id="@+id/tv_registeractivity_username"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="电话："/>
        <EditText
            android:id="@+id/et_registeractivity_username"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="17636283360"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp" />
    </LinearLayout>



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="15dp"
        android:layout_marginTop="10dp"
        android:orientation="horizontal" />
    <Button
        android:id="@+id/bt_registeractivity_register"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginLeft="5dp"
        android:textColor="#fff"
        android:text="欧尼酱，这是我的联系方式"
        android:onClick="onClick"
        android:layout_marginTop="40dp" />
</LinearLayout>
</LinearLayout>

<?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:id="@+id/activity_main"
    tools:context="com.example.myapplication.liu"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:id="@+id/txtOne"
        android:layout_width="385dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:text="浏览历史"
        android:textSize="40dp"
        android:textColor="#EE6AA7"
        android:background="#eeeeee"
        />
    <ImageView
        android:id="@+id/iv_registeractivity_back"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:background="@drawable/shou"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:clickable="true"
        android:onClick="onClick"
        />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp"
        >
        <TextView android:id="@+id/tv_registeractivity_register"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修改" android:textColor="#fff"
            android:textSize="20dp"

            android:layout_centerVertical="true"
            android:layout_marginLeft="20dp" />
    </RelativeLayout> <LinearLayout
    android:id="@+id/ll_registeractivity_body"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_below="@+id/rl_registeractivity_top"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp" >
    <LinearLayout android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView android:id="@+id/tv_registeractivity_username"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="PDD"/>
        <EditText
            android:id="@+id/et_registeractivity_username"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="你跟我谈请假？"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/tv_registeractivity_password"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="ww" />

        <EditText
            android:id="@+id/et_registeractivity_password"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginLeft="10dp"
            android:gravity="center_vertical"
            android:text="有没有大佬组队？求组..."
            />
    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="15dp"
        android:layout_marginTop="10dp"
        android:orientation="horizontal" />
    <Button
        android:id="@+id/bt_registeractivity_register"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginLeft="5dp"
        android:textColor="#fff"
        android:text="亲，这是您的浏览记录哦"
        android:onClick="onClick"
        android:layout_marginTop="40dp" />
</LinearLayout>
</LinearLayout>

<?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:id="@+id/activity_main"
    tools:context="com.example.myapplication.shou"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:id="@+id/txtTwo"
        android:layout_width="385dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:text="我的收藏"
        android:textSize="40dp"
        android:textColor="#EE6AA7"
        android:background="#eeeeee"
        />
    <ImageView
        android:id="@+id/iv_registeractivity_back"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:background="@drawable/shou"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:clickable="true"
        android:onClick="onClick"
        />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp"
        >
        <TextView android:id="@+id/tv_registeractivity_register"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修改" android:textColor="#fff"
            android:textSize="20dp"

            android:layout_centerVertical="true"
            android:layout_marginLeft="20dp" />
    </RelativeLayout> <LinearLayout
    android:id="@+id/ll_registeractivity_body"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_below="@+id/rl_registeractivity_top"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp" >
    <LinearLayout android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView android:id="@+id/tv_registeractivity_username"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="题目："/>
        <EditText
            android:id="@+id/et_registeractivity_username"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="你跟我谈请假？"
            android:gravity="center_vertical"
            android:layout_marginLeft="10dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/tv_registeractivity_password"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="发帖人：" />

        <EditText
            android:id="@+id/et_registeractivity_password"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginLeft="10dp"
            android:gravity="center_vertical"
            android:text="PDD"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="15dp"
        android:layout_marginTop="10dp"
        android:orientation="horizontal" />
    <Button
        android:id="@+id/bt_registeractivity_register"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginLeft="5dp"
        android:textColor="#fff"
        android:text="哈尼，您的收藏在这儿哟"
        android:onClick="onClick"
        android:layout_marginTop="40dp" />
</LinearLayout>
</LinearLayout>

<?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:id="@+id/activity_main"
    tools:context="com.example.myapplication.liu"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:id="@+id/txtOne"
        android:layout_width="385dp"
        android:layout_height="60dp"
        android:gravity="center"
        android:text="设置"
        android:textSize="40dp"
        android:textColor="#EE6AA7"
        android:background="#eeeeee"
        />
    <ImageView
        android:id="@+id/iv_registeractivity_back"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:background="@drawable/shou"
        android:layout_centerVertical="true"
        android:layout_marginLeft="10dp"
        android:clickable="true"
        android:onClick="onClick"
        />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="70dp"
        >
        <TextView android:id="@+id/tv_registeractivity_register"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修改" android:textColor="#fff"
            android:textSize="20dp"

            android:layout_centerVertical="true"
            android:layout_marginLeft="20dp" />
    </RelativeLayout> <LinearLayout
    android:id="@+id/ll_registeractivity_body"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_below="@+id/rl_registeractivity_top"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp" >



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="15dp"
        android:layout_marginTop="10dp"
        android:orientation="horizontal" />
    <Button
        android:id="@+id/bt_registeractivity_register"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_marginLeft="5dp"
        android:textColor="#fff"
        android:text="当前已是最新版本，无需更新"
        android:onClick="onClick"
        android:layout_marginTop="40dp" />
</LinearLayout>
</LinearLayout>

package com.example.myapplication;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import java.util.ArrayList;

public class DBOpenHelper extends SQLiteOpenHelper {

    private SQLiteDatabase db;

    public DBOpenHelper(Context context) {
        super(context, "db_test", null, 1);
        db = getReadableDatabase();
    }
    @Override
    public void onCreate(SQLiteDatabase db){
        db.execSQL("CREATE TABLE IF NOT EXISTS user(" +
                "_id INTEGER PRIMARY KEY AUTOINCREMENT," +
                "name TEXT," +
                "password TEXT," + "password2 TEXT,"+"password3 TEXT,"+"password4 TEXT,"+"password5 TEXT)");
    }
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion){
        db.execSQL("DROP TABLE IF EXISTS user");
        onCreate(db);
    }
    public ArrayList<User> getAllData(){

        ArrayList<User> list = new ArrayList<User>();
        Cursor cursor = db.query("user",null,null,null,null,null,"name DESC");
        while(cursor.moveToNext()){
            String name = cursor.getString(cursor.getColumnIndex("name"));
            String password = cursor.getString(cursor.getColumnIndex("password"));
            String password2 = cursor.getString(cursor.getColumnIndex("password2"));
            String password3 = cursor.getString(cursor.getColumnIndex("password3"));
            String password4 = cursor.getString(cursor.getColumnIndex("password4"));
            String password5 = cursor.getString(cursor.getColumnIndex("password5"));
            list.add(new User(name,password,password2,password3,password4,password5));
        }
        return list;
    }
    public void add(String name,String password, String password2, String password3, String password4, String password5){
        db.execSQL("INSERT INTO user (name,password) VALUES(?,?)");
    }
    public void xian(String name,String password, String password2, String password3, String password4, String password5){
        db.execSQL("SELECT * FROM user WHERE name=AND password = AND password2 = AND password3 = AND password4 = AND password5 ="+name+password+password2+password3+password4+password5);
    }
    public void delete(String name,String password,String password2,String password3,String password4,String password5){
        db.execSQL("DELETE FROM user WHERE name = AND password = AND password2 = AND password3 = AND password4 = AND password5 ="+name+password+password2+password3+password4+password5);
    }
    public void updata(String name,String password,String password2,String password3,String password4,String password5){
        db.execSQL("UPDATE user SET name = ?",new Object[]{name});
        db.execSQL("UPDATE user SET password = ?",new Object[]{password});
        db.execSQL("UPDATE user SET password2 = ?",new Object[]{password2});
        db.execSQL("UPDATE user SET password3 = ?",new Object[]{password3});
        db.execSQL("UPDATE user SET password4 = ?",new Object[]{password4});
        db.execSQL("UPDATE user SET password5 = ?",new Object[]{password5});
    }


}

package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class guan extends AppCompatActivity implements View.OnClickListener {
    private String realCode;
    private DBOpenHelper mDBOpenHelper;
    private Button mBtRegisteractivityRegister;
    private RelativeLayout mRlRegisteractivityTop;
    private ImageView mIvRegisteractivityBack;
    private LinearLayout mLlRegisteractivityBody;
    private EditText mEtRegisteractivityUsername;
    private EditText mEtRegisteractivityPassword;
    private EditText mEtRegisteractivityPassword2;
    private EditText mEtRegisteractivityPassword3;
    private EditText mEtRegisteractivityPassword4;
    private EditText mEtRegisteractivityPassword5;
    private EditText mEtRegisteractivityPhonecodes;
    private ImageView mIvRegisteractivityShowcode;
    private RelativeLayout mRlRegisteractivityBottom;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.guan);
        initView();
        mDBOpenHelper = new DBOpenHelper(this);


    }

    private void initView(){
        mBtRegisteractivityRegister = findViewById(R.id.bt_registeractivity_register);
        mRlRegisteractivityTop = findViewById(R.id.rl_registeractivity_top);
        mIvRegisteractivityBack = findViewById(R.id.iv_registeractivity_back);
        mLlRegisteractivityBody = findViewById(R.id.ll_registeractivity_body);
        mEtRegisteractivityUsername = findViewById(R.id.et_registeractivity_username);
        mEtRegisteractivityPassword = findViewById(R.id.et_registeractivity_password);
        mEtRegisteractivityPassword2 = findViewById(R.id.et_registeractivity_password2);
        mEtRegisteractivityPassword3= findViewById(R.id.et_registeractivity_password3);
        mEtRegisteractivityPassword4 = findViewById(R.id.et_registeractivity_password4);
        mEtRegisteractivityPassword5 = findViewById(R.id.et_registeractivity_password5);

        mIvRegisteractivityBack.setOnClickListener(this);
        mBtRegisteractivityRegister.setOnClickListener(this);
    }

    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.iv_registeractivity_back: //返回页面
                Intent intent1 = new Intent(this, com.example.myapplication.MainActivity.class);
                startActivity(intent1);
                finish();
                break;

            case R.id.bt_registeractivity_register:    //按钮
                //获取信息
                String username = mEtRegisteractivityUsername.getText().toString().trim();
                String password = mEtRegisteractivityPassword.getText().toString().trim();
                String password2 = mEtRegisteractivityPassword2.getText().toString().trim();
                String password3 = mEtRegisteractivityPassword3.getText().toString().trim();
                String password4 = mEtRegisteractivityPassword4.getText().toString().trim();
                String password5 = mEtRegisteractivityPassword5.getText().toString().trim();
                //验证
                if (1==1) {

                    Intent intent2 = new Intent(this, com.example.myapplication.MainActivity.class);
                    startActivity(intent2);
                    finish();
                    Toast.makeText(this,  "返回成功", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(this, "未完善信息，失败", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
}

package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class lian extends AppCompatActivity implements View.OnClickListener {
    private String realCode;
    private DBOpenHelper mDBOpenHelper;
    private Button mBtRegisteractivityRegister;
    private RelativeLayout mRlRegisteractivityTop;
    private ImageView mIvRegisteractivityBack;
    private LinearLayout mLlRegisteractivityBody;
    private EditText mEtRegisteractivityUsername;
    private EditText mEtRegisteractivityPassword;
    private EditText mEtRegisteractivityPassword2;
    private EditText mEtRegisteractivityPassword3;
    private EditText mEtRegisteractivityPassword4;
    private EditText mEtRegisteractivityPassword5;
    private EditText mEtRegisteractivityPhonecodes;
    private ImageView mIvRegisteractivityShowcode;
    private RelativeLayout mRlRegisteractivityBottom;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.lian);
        initView();
        mDBOpenHelper = new DBOpenHelper(this);


    }

    private void initView(){
        mBtRegisteractivityRegister = findViewById(R.id.bt_registeractivity_register);
        mRlRegisteractivityTop = findViewById(R.id.rl_registeractivity_top);
        mIvRegisteractivityBack = findViewById(R.id.iv_registeractivity_back);
        mLlRegisteractivityBody = findViewById(R.id.ll_registeractivity_body);
        mEtRegisteractivityUsername = findViewById(R.id.et_registeractivity_username);
        mEtRegisteractivityPassword = findViewById(R.id.et_registeractivity_password);
        mEtRegisteractivityPassword2 = findViewById(R.id.et_registeractivity_password2);
        mEtRegisteractivityPassword3= findViewById(R.id.et_registeractivity_password3);
        mEtRegisteractivityPassword4 = findViewById(R.id.et_registeractivity_password4);
        mEtRegisteractivityPassword5 = findViewById(R.id.et_registeractivity_password5);

        mIvRegisteractivityBack.setOnClickListener(this);
        mBtRegisteractivityRegister.setOnClickListener(this);
    }

    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.iv_registeractivity_back: //返回页面
                Intent intent1 = new Intent(this, com.example.myapplication.MainActivity.class);
                startActivity(intent1);
                finish();
                break;

            case R.id.bt_registeractivity_register:    //按钮
                //获取信息
                String username = mEtRegisteractivityUsername.getText().toString().trim();
                String password = mEtRegisteractivityPassword.getText().toString().trim();
                String password2 = mEtRegisteractivityPassword2.getText().toString().trim();
                String password3 = mEtRegisteractivityPassword3.getText().toString().trim();
                String password4 = mEtRegisteractivityPassword4.getText().toString().trim();
                String password5 = mEtRegisteractivityPassword5.getText().toString().trim();
                //验证
                if (1==1) {

                    Intent intent2 = new Intent(this, com.example.myapplication.MainActivity.class);
                    startActivity(intent2);
                    finish();
                    Toast.makeText(this,  "返回成功", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(this, "未完善信息，失败", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
}

package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class liu extends AppCompatActivity implements View.OnClickListener {
    private String realCode;
    private DBOpenHelper mDBOpenHelper;
    private Button mBtRegisteractivityRegister;
    private RelativeLayout mRlRegisteractivityTop;
    private ImageView mIvRegisteractivityBack;
    private LinearLayout mLlRegisteractivityBody;
    private EditText mEtRegisteractivityUsername;
    private EditText mEtRegisteractivityPassword;
    private EditText mEtRegisteractivityPassword2;
    private EditText mEtRegisteractivityPassword3;
    private EditText mEtRegisteractivityPassword4;
    private EditText mEtRegisteractivityPassword5;
    private EditText mEtRegisteractivityPhonecodes;
    private ImageView mIvRegisteractivityShowcode;
    private RelativeLayout mRlRegisteractivityBottom;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.liu);
        initView();
        mDBOpenHelper = new DBOpenHelper(this);


    }

    private void initView(){
        mBtRegisteractivityRegister = findViewById(R.id.bt_registeractivity_register);
        mRlRegisteractivityTop = findViewById(R.id.rl_registeractivity_top);
        mIvRegisteractivityBack = findViewById(R.id.iv_registeractivity_back);
        mLlRegisteractivityBody = findViewById(R.id.ll_registeractivity_body);
        mEtRegisteractivityUsername = findViewById(R.id.et_registeractivity_username);
        mEtRegisteractivityPassword = findViewById(R.id.et_registeractivity_password);
        mEtRegisteractivityPassword2 = findViewById(R.id.et_registeractivity_password2);
        mEtRegisteractivityPassword3= findViewById(R.id.et_registeractivity_password3);
        mEtRegisteractivityPassword4 = findViewById(R.id.et_registeractivity_password4);
        mEtRegisteractivityPassword5 = findViewById(R.id.et_registeractivity_password5);

        mIvRegisteractivityBack.setOnClickListener(this);
        mBtRegisteractivityRegister.setOnClickListener(this);
    }

    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.iv_registeractivity_back: //返回页面
                Intent intent1 = new Intent(this, com.example.myapplication.MainActivity.class);
                startActivity(intent1);
                finish();
                break;

            case R.id.bt_registeractivity_register:    //按钮
                //获取信息
                String username = mEtRegisteractivityUsername.getText().toString().trim();
                String password = mEtRegisteractivityPassword.getText().toString().trim();
                String password2 = mEtRegisteractivityPassword2.getText().toString().trim();
                String password3 = mEtRegisteractivityPassword3.getText().toString().trim();
                String password4 = mEtRegisteractivityPassword4.getText().toString().trim();
                String password5 = mEtRegisteractivityPassword5.getText().toString().trim();
                //验证
                if (1==1) {

                    Intent intent2 = new Intent(this, com.example.myapplication.MainActivity.class);
                    startActivity(intent2);
                    finish();
                    Toast.makeText(this,  "返回成功", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(this, "未完善信息，失败", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
}

package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class shou extends AppCompatActivity implements View.OnClickListener {
    private String realCode;
    private DBOpenHelper mDBOpenHelper;
    private Button mBtRegisteractivityRegister;
    private RelativeLayout mRlRegisteractivityTop;
    private ImageView mIvRegisteractivityBack;
    private LinearLayout mLlRegisteractivityBody;
    private EditText mEtRegisteractivityUsername;
    private EditText mEtRegisteractivityPassword;
    private EditText mEtRegisteractivityPassword2;
    private EditText mEtRegisteractivityPassword3;
    private EditText mEtRegisteractivityPassword4;
    private EditText mEtRegisteractivityPassword5;
    private EditText mEtRegisteractivityPhonecodes;
    private ImageView mIvRegisteractivityShowcode;
    private RelativeLayout mRlRegisteractivityBottom;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.shou);
        initView();
        mDBOpenHelper = new DBOpenHelper(this);


    }

    private void initView(){
        mBtRegisteractivityRegister = findViewById(R.id.bt_registeractivity_register);
        mRlRegisteractivityTop = findViewById(R.id.rl_registeractivity_top);
        mIvRegisteractivityBack = findViewById(R.id.iv_registeractivity_back);
        mLlRegisteractivityBody = findViewById(R.id.ll_registeractivity_body);
        mEtRegisteractivityUsername = findViewById(R.id.et_registeractivity_username);
        mEtRegisteractivityPassword = findViewById(R.id.et_registeractivity_password);
        mEtRegisteractivityPassword2 = findViewById(R.id.et_registeractivity_password2);
        mEtRegisteractivityPassword3= findViewById(R.id.et_registeractivity_password3);
        mEtRegisteractivityPassword4 = findViewById(R.id.et_registeractivity_password4);
        mEtRegisteractivityPassword5 = findViewById(R.id.et_registeractivity_password5);

        mIvRegisteractivityBack.setOnClickListener(this);
        mBtRegisteractivityRegister.setOnClickListener(this);
    }

    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.iv_registeractivity_back: //返回页面
                Intent intent1 = new Intent(this, com.example.myapplication.MainActivity.class);
                startActivity(intent1);
                finish();
                break;

            case R.id.bt_registeractivity_register:    //按钮
                //获取信息
                String username = mEtRegisteractivityUsername.getText().toString().trim();
                String password = mEtRegisteractivityPassword.getText().toString().trim();
                String password2 = mEtRegisteractivityPassword2.getText().toString().trim();
                String password3 = mEtRegisteractivityPassword3.getText().toString().trim();
                String password4 = mEtRegisteractivityPassword4.getText().toString().trim();
                String password5 = mEtRegisteractivityPassword5.getText().toString().trim();
                //验证
                if (1==1) {

                    Intent intent2 = new Intent(this, com.example.myapplication.MainActivity.class);
                    startActivity(intent2);
                    finish();
                    Toast.makeText(this,  "返回成功", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(this, "未完善信息，失败", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
}

package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class ying extends AppCompatActivity implements View.OnClickListener {
    private String realCode;
    private DBOpenHelper mDBOpenHelper;
    private Button mBtRegisteractivityRegister;
    private RelativeLayout mRlRegisteractivityTop;
    private ImageView mIvRegisteractivityBack;
    private LinearLayout mLlRegisteractivityBody;
    private EditText mEtRegisteractivityUsername;
    private EditText mEtRegisteractivityPassword;
    private EditText mEtRegisteractivityPassword2;
    private EditText mEtRegisteractivityPassword3;
    private EditText mEtRegisteractivityPassword4;
    private EditText mEtRegisteractivityPassword5;
    private EditText mEtRegisteractivityPhonecodes;
    private ImageView mIvRegisteractivityShowcode;
    private RelativeLayout mRlRegisteractivityBottom;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ying);
        initView();
        mDBOpenHelper = new DBOpenHelper(this);


    }

    private void initView(){
        mBtRegisteractivityRegister = findViewById(R.id.bt_registeractivity_register);
        mRlRegisteractivityTop = findViewById(R.id.rl_registeractivity_top);
        mIvRegisteractivityBack = findViewById(R.id.iv_registeractivity_back);
        mLlRegisteractivityBody = findViewById(R.id.ll_registeractivity_body);
        mEtRegisteractivityUsername = findViewById(R.id.et_registeractivity_username);
        mEtRegisteractivityPassword = findViewById(R.id.et_registeractivity_password);
        mEtRegisteractivityPassword2 = findViewById(R.id.et_registeractivity_password2);
        mEtRegisteractivityPassword3= findViewById(R.id.et_registeractivity_password3);
        mEtRegisteractivityPassword4 = findViewById(R.id.et_registeractivity_password4);
        mEtRegisteractivityPassword5 = findViewById(R.id.et_registeractivity_password5);

        mIvRegisteractivityBack.setOnClickListener(this);
        mBtRegisteractivityRegister.setOnClickListener(this);
    }

    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.iv_registeractivity_back: //返回页面
                Intent intent1 = new Intent(this, com.example.myapplication.MainActivity.class);
                startActivity(intent1);
                finish();
                break;

            case R.id.bt_registeractivity_register:    //按钮
                //获取信息
                String username = mEtRegisteractivityUsername.getText().toString().trim();
                String password = mEtRegisteractivityPassword.getText().toString().trim();
                String password2 = mEtRegisteractivityPassword2.getText().toString().trim();
                String password3 = mEtRegisteractivityPassword3.getText().toString().trim();
                String password4 = mEtRegisteractivityPassword4.getText().toString().trim();
                String password5 = mEtRegisteractivityPassword5.getText().toString().trim();
                //验证
                if (1==1) {

                    Intent intent2 = new Intent(this, com.example.myapplication.MainActivity.class);
                    startActivity(intent2);
                    finish();
                    Toast.makeText(this,  "返回成功", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(this, "未完善信息，失败", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
}