软件工程日报十九——第一次个人作业 每日打卡APP的实现

今天，我们验收了几周前的第一次个人作业——每日打卡App,在这两天的完善和修改下，终于完成了本次作业的验收，下面是有关本次作业的情况

项目要求：

1、用户注册：用户注册信息包括用户ID（学号）、用户名（姓名），手机号码，用户单位（班级），用户班级四项基本信息，用户第一次注册后，用户姓名不用每次输入  。

2、每日总结打卡：内容包括：日期、每日关键字、每日总结、坚持天数（自动计数，显示上次天数）、连续最长天数。

3、每日提醒记事本：设置每日事件闹钟，可以提醒用户每日必做事件。

4、当天数据存储到本地数据库，其余数据存储到远程服务器上。

5、汇总统计：教师可以查询统计所有同学的每日打卡记录。

6、每日总结查询：可以按照关键字、每日总结查询。

7、自动从数据库中生成所有人的每日总结记录，包括序号、班级、学号、姓名、发表总次数。

项目源码：

MainActivity.java

 

package com.example.test06;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    EditText name,pwd;
    Button btnlogin,btnreg,teacher;
    Mysql mysql;
    SQLiteDatabase db;
    SharedPreferences sp1,sp2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        name = this.findViewById(R.id.name);            //用户名输入框
        pwd = this.findViewById(R.id.pwd);              //密码输入框
        btnlogin = this.findViewById(R.id.login);         //登录按钮
        btnreg = this.findViewById(R.id.reg);               //注册按钮
        teacher=this.findViewById(R.id.teacher);
        sp1 =  this.getSharedPreferences("userinfo",this.MODE_PRIVATE);
        sp2 = this.getSharedPreferences("username",this.MODE_PRIVATE);

        name.setText(sp1.getString("usname",null));
        pwd.setText(sp1.getString("uspwd",null));
        mysql = new Mysql(this,"Userinfo",null,1);      //建数据库或者取数据库
        db = mysql.getReadableDatabase();
        btnlogin.setOnClickListener(new View.OnClickListener() {                //登录事件
            @Override
            public void onClick(View v) {
                String username = name.getText().toString();
                String password = pwd.getText().toString();                 //获取用户输入的用户名和密码
                //查询用户名和密码相同的数据
                Cursor cursor = db.query("logins",new String[]{"usname","uspwd"}," usname=? and uspwd=?",new String[]{username,password},null,null,null);

                int flag = cursor.getCount();                            //查询出来的记录项的条数，若没有该用户则为0条
                if(flag!=0){                                            //若查询出的记录不为0，则进行跳转操作
                    Intent intent = new Intent();
                    intent.setClass(MainActivity.this,add.class);            //设置页面跳转
                    SharedPreferences.Editor editor = sp2.edit();
                    cursor.moveToFirst();                                   //将光标移动到position为0的位置，默认位置为-1
                    String loginname = cursor.getString(0);
                    editor.putString("Loginname",loginname);
                    editor.commit();                                        //将用户名存到SharedPreferences中
                    startActivity(intent);
                }
                else{
                    Toast.makeText(MainActivity.this,"用户名或密码错误！",Toast.LENGTH_LONG).show();             //提示用户信息错误或没有账号
                }

            }
        });

        btnreg.setOnClickListener(new View.OnClickListener() {                  //注册事件
            @Override
            public void onClick(View v) {

                Intent intent = new Intent();
                intent.setClass(MainActivity.this,Register.class);          //跳转到注册页面
                startActivity(intent);
                Toast.makeText(MainActivity.this,"前往注册！",Toast.LENGTH_SHORT).show();
            }
        });
        teacher.setOnClickListener(new View.OnClickListener() {                  //注册事件
            @Override
            public void onClick(View v) {

                Intent intent = new Intent();
                intent.setClass(MainActivity.this,teacher.class);          //跳转到注册页面
                startActivity(intent);
                Toast.makeText(MainActivity.this,"教师登录！",Toast.LENGTH_SHORT).show();
            }
        });

    }
}

 

Mysql.java

package com.example.test06;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import androidx.annotation.Nullable;

public class Mysql extends SQLiteOpenHelper {
    public Mysql(@Nullable Context context, @Nullable String name, @Nullable SQLiteDatabase.CursorFactory factory, int version) {
        super(context, name, factory, version);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL( "create table logins (id integer primary key autoincrement,usname text,uspwd text,id1 text,cphone text,lass1 text)");

        db.execSQL("create table adda (id integer primary key autoincrement,date text,title text,zongjie text)");
    }
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    }
}

Register.java

package com.example.test06;

import androidx.appcompat.app.AppCompatActivity;

import android.content.ContentValues;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Register extends AppCompatActivity {
    EditText usename,usepwd,usepwd2,id1,lass1,cphone;
    Button submit,back;
    Mysql mysql1;
    SQLiteDatabase db;
    SharedPreferences sp;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
       id1= this.findViewById(R.id.id1);
        lass1 = this.findViewById(R.id.lass1);
        cphone = this.findViewById(R.id.cphone);
        usename = this.findViewById(R.id.usename);
        usepwd =  this.findViewById(R.id.usepwd);
        usepwd2 = this.findViewById(R.id.usepwd2);
        submit =   this.findViewById(R.id.submit);
        back=this.findViewById(R.id.back);
        mysql1 = new Mysql(this,"Userinfo",null,1);      //建数据库
        db = mysql1.getReadableDatabase();
        sp = this.getSharedPreferences("userinfo",this.MODE_PRIVATE);


        submit.setOnClickListener(new View.OnClickListener() {
            boolean flag = true;            //判断用户是否已存在的标志位
            @Override
            public void onClick(View v) {
                String ID1 = id1.getText().toString();
                String phone1 = cphone.getText().toString();
                String lass2 = lass1.getText().toString();
                String name = usename.getText().toString();                //用户名
                String pwd01 = usepwd.getText().toString();                //密码
                String pwd02 = usepwd2.getText().toString();            //二次输入的密码
                 if(name.equals("")||pwd01 .equals("")||pwd02.equals("")){
                    Toast.makeText(Register.this, "用户名或密码不能为空!！", Toast.LENGTH_LONG).show();
                }
                else{
                    Cursor cursor = db.query("logins",new String[]{"usname"},null,null,null,null,null);

                    while (cursor.moveToNext()){
                        if(cursor.getString(0).equals(name)){
                            flag = false;
                            break;
                        }
                    }
                    if(flag==true){                                             //判断用户是否已存在
                        if (pwd01.equals(pwd02)) {                                //判断两次输入的密码是否一致，若一致则继续，不一致则提醒密码不一致
                            ContentValues cv = new ContentValues();
                            cv.put("usname",name);
                            cv.put("uspwd",pwd01);
                            cv.put("id1",ID1);
                            cv.put("cphone",phone1);
                            cv.put("lass1",lass2);
                            db.insert("logins",null,cv);
                            SharedPreferences.Editor editor = sp.edit();
                            editor.putString("usname",name);
                            editor.putString("uspwd",pwd01);
                            editor.putString("id1",ID1);
                            editor.putString("cphone",phone1);
                            editor.putString("lass1",lass2);
                            editor.commit();
                            Intent intent = new Intent();
                            intent.setClass(Register.this,MainActivity.class);      //跳转到登录页面
                            startActivity(intent);
                            Toast.makeText(Register.this, "注册成功！", Toast.LENGTH_LONG).show();
                        }
                        else {
                            Toast.makeText(Register.this, "密码不一致！", Toast.LENGTH_LONG).show();            //提示密码不一致
                        }
                    }
                    else{
                        Toast.makeText(Register.this, "用户已存在！", Toast.LENGTH_LONG).show();            //提示密码不一致
                    }

                }
            }


        });
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(Register.this,MainActivity.class);
                startActivity(intent);
                Toast.makeText(Register.this,"返回",Toast.LENGTH_SHORT).show();

            }
        });
    }
}

add.java

package com.example.test06;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class add extends AppCompatActivity {
     Button add,back;
    Button clock,query;

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.add1);
        add = this.findViewById(R.id.add);
        clock=this.findViewById(R.id.clock);
       query=this.findViewById(R.id.query);
        back=this.findViewById(R.id.back);
        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(add.this,addData.class);
                startActivity(intent);
                Toast.makeText(add.this,"添加数据！",Toast.LENGTH_SHORT).show();
            }
        });
        clock.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(add.this,ClockActivity.class);
                startActivity(intent);
                Toast.makeText(add.this,"设置闹钟",Toast.LENGTH_SHORT).show();
            }
        });
        query.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(add.this,queryActivity.class);
                startActivity(intent);
                Toast.makeText(add.this,"查询数据",Toast.LENGTH_SHORT).show();
            }
        });
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(add.this,MainActivity.class);
                startActivity(intent);
                Toast.makeText(add.this,"返回",Toast.LENGTH_SHORT).show();

            }
        });
    }

}

addData.java

package com.example.test06;

import androidx.appcompat.app.AppCompatActivity;

import android.content.ContentValues;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class addData extends AppCompatActivity {
    EditText date,title,zongjie;
    Button submit,back;
    Mysql mysql;
    SQLiteDatabase db;
    SharedPreferences sp;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.add);
        date = this.findViewById(R.id.date);
        title =  this.findViewById(R.id.title);
        zongjie = this.findViewById(R.id.zongjie);
        submit =   this.findViewById(R.id.submit);
        back=this.findViewById(R.id.back);
        mysql = new Mysql(addData.this,"addate",null,2);      //建数据库
        db = mysql.getReadableDatabase();
        sp = this.getSharedPreferences("addate",this.MODE_PRIVATE);


        submit.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                String date1 = date.getText().toString();
                String title1 = title.getText().toString();
                String zongjie1 = zongjie.getText().toString();
                if(date1.equals("")||title1 .equals("")||zongjie1.equals("")){
                    Toast.makeText(addData.this, "提交内容不能为空!！", Toast.LENGTH_LONG).show();
                }
                else{
                    Cursor cursor1=db.rawQuery("select * from adda",new String[]{});
                    int i=cursor1.getCount();
                    cursor1.close();

                    ContentValues cv = new ContentValues();
                    cv.put("date",date1);
                    cv.put("title",title1);
                    cv.put("zongjie",zongjie1);
                    db.insert("adda",null,cv);
                    SharedPreferences.Editor editor = sp.edit();
                    editor.putString("date",date1);
                    editor.putString("title",title1);
                    editor.putString("zongjie",zongjie1);
                    editor.commit();
                    Intent intent = new Intent();
                    intent.setClass(addData.this,add.class);
                    startActivity(intent);
                    Toast.makeText(addData.this, "添加成功！您已经坚持"+i+"天", Toast.LENGTH_LONG).show();
                        }


            }


        });
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(addData.this,add.class);
                startActivity(intent);
                Toast.makeText(addData.this,"返回",Toast.LENGTH_SHORT).show();

            }
        });
    }
}

ClockActivity

package com.example.test06;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.Toast;

import androidx.annotation.Nullable;

import java.util.Calendar;

public class ClockActivity extends Activity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.clock);
        final TimePicker timePicker =(TimePicker) findViewById(R.id.time);
        timePicker.setIs24HourView(true);
        Button button1=(Button) findViewById(R.id.set);
        //为设置闹钟按钮添加事件监听器
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //设置闹钟
                Intent intent=new Intent(ClockActivity.this,AlarmActivity.class);//创建一个Intent对象
                PendingIntent pendingIntent=PendingIntent.getActivity(ClockActivity.this,0,intent,PendingIntent.FLAG_MUTABLE);//获取显示闹钟的对象
                AlarmManager alarm=(AlarmManager) getSystemService(Context.ALARM_SERVICE);//获取alarmManager对象
                Calendar c=Calendar.getInstance();//获取日历对象
                c.set(Calendar.HOUR_OF_DAY,timePicker.getCurrentHour());//设置闹钟小时数
                c.set(Calendar.MINUTE,timePicker.getCurrentMinute());//设置闹钟分钟数
                c.set(Calendar.SECOND,0);//设置闹钟秒数
                alarm.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);//设置一个闹钟
                Toast.makeText(ClockActivity.this,"闹钟设置成功",Toast.LENGTH_SHORT).show();
            }
        });
    }
}

AlarmActivity.java

package com.example.test06;

import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Toast;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
public class AlarmActivity  extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        AlertDialog alert=new AlertDialog.Builder(this).create();
         //alert.setIcon(R.drawable.alarm);
        alert.setTitle("时间到了");
        alert.setMessage("需要干活了");
        alert.setButton(DialogInterface.BUTTON_POSITIVE, "确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Intent intent = new Intent();
                intent.setClass(AlarmActivity.this,add.class);
                startActivity(intent);
                Toast.makeText(AlarmActivity.this,"干活",Toast.LENGTH_SHORT).show();
            }
        });
        alert.show();
    }
}

queryActivity.java

package com.example.test06;

import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.util.ArrayList;
import java.util.List;


public class queryActivity extends AppCompatActivity {
     EditText querydata;
     TextView show1,show2,show3;
     Button submit,back;
     Mysql mysql;
    SQLiteDatabase db;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.query);
        querydata = this.findViewById(R.id.querydata);
        submit = this.findViewById(R.id.submit);
        back=this.findViewById(R.id.back);
        mysql = new Mysql(this,"addate",null,2);      //建数据库
        db = mysql.getReadableDatabase();
        show1=findViewById(R.id.show1);
        show2=findViewById(R.id.show2);
        show3=findViewById(R.id.show3);
        submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String title = querydata.getText().toString();
                show1.setText("日期");
                show2.setText("关键字");
                show3.setText("总结");
                Cursor cursor1 = db.rawQuery("select * from adda where title = ? or zongjie = ?", new String[]{title,title});
                while (cursor1.moveToNext()) {
                    String date = cursor1.getString(1);
                    String title1 = cursor1.getString(2);
                    String number = cursor1.getString(3);
                    show1.setText(show1.getText()+"\n"+date);
                    show2.setText(show2.getText()+"\n"+title1);
                    show3.setText(show3.getText()+"\n"+number);
                }
               cursor1.close();
                db.close();
            }

        });
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(queryActivity.this,add.class);
                startActivity(intent);
                Toast.makeText(queryActivity.this,"返回",Toast.LENGTH_SHORT).show();

            }
        });
    }
}

teacher.java

package com.example.test06;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class teacher extends AppCompatActivity {
    Button query1,query2,back;

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.teacher);
        query1=this.findViewById(R.id.query1);
        query2=this.findViewById(R.id.query2);
        back=this.findViewById(R.id.back);
        query1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(teacher.this,totalQuery.class);
                startActivity(intent);
                Toast.makeText(teacher.this,"汇总查询！",Toast.LENGTH_SHORT).show();
            }
        });
        query2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(teacher.this,queryActivity.class);
                startActivity(intent);
                Toast.makeText(teacher.this,"关键字查询！",Toast.LENGTH_SHORT).show();
            }
        });
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(teacher.this,MainActivity.class);
                startActivity(intent);
                Toast.makeText(teacher.this,"返回",Toast.LENGTH_SHORT).show();

            }
        });
    }
}

totalQuery.java

package com.example.test06;

import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.util.ArrayList;
import java.util.List;


public class totalQuery extends AppCompatActivity {
    TextView show1,show2,show3;
    Button submit,back;
    Mysql mysql;
    SQLiteDatabase db;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.totalquery);
        submit = this.findViewById(R.id.submit);
        back=this.findViewById(R.id.back);
        mysql = new Mysql(this,"addate",null,2);      //建数据库
        db = mysql.getReadableDatabase();
        show1=findViewById(R.id.show1);
        show2=findViewById(R.id.show2);
        show3=findViewById(R.id.show3);
        submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                show1.setText("日期");
                show2.setText("关键字");
                show3.setText("总结");
                Cursor cursor1 = db.rawQuery("select * from adda ", new String[]{});
                while (cursor1.moveToNext()) {
                    String date = cursor1.getString(1);
                    String title1 = cursor1.getString(2);
                    String number = cursor1.getString(3);
                    show1.setText(show1.getText()+"\n"+date);
                    show2.setText(show2.getText()+"\n"+title1);
                    show3.setText(show3.getText()+"\n"+number);
                }
                cursor1.close();
                db.close();
            }

        });
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(totalQuery.this,teacher.class);
                startActivity(intent);
                Toast.makeText(totalQuery.this,"返回",Toast.LENGTH_SHORT).show();

            }
        });
    }
}

 activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:orientation="horizontal">
            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="0.3"
                android:gravity="center"
                android:textSize="18dp"
                android:text="用户名:"/>
            <EditText
                android:id="@+id/name"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_marginRight="20dp"/>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:orientation="horizontal">
            <TextView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:textSize="18dp"
                android:layout_weight="0.3"
                android:text="密    码:"/>
            <EditText
                android:id="@+id/pwd"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:inputType="textPassword"
                android:layout_weight="1"
                android:layout_marginRight="20dp"
                />
        </LinearLayout>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <Button
                android:id="@+id/login"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_margin="5dp"
                android:text="登录"
                />
            <Button
                android:id="@+id/reg"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:layout_margin="5dp"
                android:text="注册"
                />
        </LinearLayout>
        <Button
            android:id="@+id/teacher"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:text="教师登录"
            />
    </LinearLayout>


</androidx.constraintlayout.widget.ConstraintLayout>

activity_register.xml

<?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=".Register">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="学号:" ></TextView>

        <EditText
            android:id="@+id/id1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="">

        </EditText>
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="手机号:" />

        <EditText
            android:id="@+id/cphone"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="">

        </EditText>
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="班级:" />

        <EditText
            android:id="@+id/lass1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="">
        </EditText>
        <!-- 用户名部分 -->
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="用户名:" />

        <EditText
            android:id="@+id/usename"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="">
        </EditText>
        <!-- 密码部分 -->
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="密 码:"
            />

        <EditText
            android:id="@+id/usepwd"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:inputType="textPassword"

            />
        <!-- 确认密码部分 -->
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="确认密码:"
            />

        <EditText
            android:id="@+id/usepwd2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:inputType="textPassword"
            />
        <Button
            android:id="@+id/submit"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="注册" />
        <Button
            android:id="@+id/back"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:text="返回"
            />
    </LinearLayout>
</LinearLayout>

add.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".addData">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:layout_editor_absoluteX="135dp"
        tools:layout_editor_absoluteY="342dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="日期" >

        </TextView>

        <EditText
            android:id="@+id/date"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="关键字:" />

        <EditText
            android:id="@+id/title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:inputType="text"

            />

        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="每日总结:" />

        <EditText
            android:id="@+id/zongjie"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:inputType="text" />

        <Button
            android:id="@+id/submit"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="提交" />
        <Button
            android:id="@+id/back"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:text="返回"
            />
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

add1.xml

<?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:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".add">
<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/add"
    android:text="添加数据"
    android:textColor="@color/white">

</Button>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/clock"
        android:text="设置闹钟"
        android:textColor="@color/white">

    </Button>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/query"
        android:text="查询数据"
        android:textColor="@color/white">

    </Button>
    <Button
        android:id="@+id/back"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:text="返回"
        />
</LinearLayout>

clock.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=".AlarmActivity">

    <TimePicker
        android:id="@+id/time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/set"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:text="设置闹钟" />

</RelativeLayout>

query.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".queryActivity">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="查询"
        android:id="@+id/title"
        android:textSize="30sp"
        android:textColor="@color/white"
        android:background="#E91E63"
        android:gravity="center">
    </TextView>

    <LinearLayout
        android:layout_below="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:layout_editor_absoluteX="135dp"
        tools:layout_editor_absoluteY="342dp">


        <TextView
            android:layout_width="match_parent"
            android:layout_height="70dp"
            android:id="@+id/a"
            android:text="请输入关键字或者每日总结"
            android:textSize="20dp" />

        <EditText
            android:id="@+id/querydata"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"

            android:inputType="text"
            ></EditText>

        <Button
            android:id="@+id/submit"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="确定" />
        <Button
            android:id="@+id/back"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:text="返回"
            />
        <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:textSize="18dp"
            android:id="@+id/show1"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:textSize="18dp"
            android:id="@+id/show2"/>
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:textSize="18dp"
                android:id="@+id/show3"/>
    </LinearLayout>

    </LinearLayout>

</RelativeLayout>

teacher.xml

<?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:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".add">
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/query1"
        android:text="汇总查询"
        android:textColor="@color/white">

    </Button>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/query2"
        android:text="条件查询"
        android:textColor="@color/white">

    </Button>

    <Button
        android:id="@+id/back"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:text="返回"
        />
</LinearLayout>

totalquery.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".queryActivity">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="查询"
        android:id="@+id/title"
        android:textSize="30sp"
        android:textColor="@color/white"
        android:background="#E91E63"
        android:gravity="center">
    </TextView>

    <LinearLayout
        android:layout_below="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:layout_editor_absoluteX="135dp"
        tools:layout_editor_absoluteY="342dp">

    <Button
        android:layout_below="@+id/title"
        android:id="@+id/submit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="确定查询" >


    </Button>
        <Button
            android:id="@+id/back"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:text="返回"
            />

        <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:textSize="18dp"
            android:id="@+id/show1"/>
            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:textSize="18dp"
                android:id="@+id/show2"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:textSize="18dp"
            android:id="@+id/show3"/>
    </LinearLayout>
    </LinearLayout>


</RelativeLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.Test06"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.example.test06.addData" />
        <activity android:name="com.example.test06.Register" />
        <activity android:name="com.example.test06.add" />
        <activity android:name="com.example.test06.ClockActivity" />
        <activity android:name="com.example.test06.AlarmActivity" />
        <activity android:name="com.example.test06.queryActivity" />
        <activity android:name="com.example.test06.teacher" />
        <activity android:name="com.example.test06.totalQuery" />
    </application>

</manifest>