Add YANGZHENKUN_branch

src/AndroidStudio_projects/app/src/androidTest/java/com/example/hamburger/ExampleInstrumentedTest.java

@@ -1,26 +0,0 @@
-package com.example.hamburger;
-
-import android.content.Context;
-
-import androidx.test.platform.app.InstrumentationRegistry;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.*;
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-@RunWith(AndroidJUnit4.class)
-public class ExampleInstrumentedTest {
-    @Test
-    public void useAppContext() {
-        // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("com.example.hamburger", appContext.getPackageName());
-    }
-}

src/AndroidStudio_projects/app/src/androidTest/java/com/example/hamburger/Mtest.java

@@ -1,84 +0,0 @@
-package com.example.hamburger;
-import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
-
-import android.content.Context;
-
-import androidx.test.platform.app.InstrumentationRegistry;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.*;
-
-import com.example.hamburger.dao.UserDao;
-
-import android.content.Intent;
-import android.os.Bundle;
-import android.widget.EditText;
-import android.view.View;
-import android.widget.Toast;
-import android.widget.Button;
-import android.os.Handler;
-import android.os.Message;
-import android.annotation.SuppressLint;
-import com.example.hamburger.dao.UserDao;
-import com.example.hamburger.entity.User;
-
-@RunWith(AndroidJUnit4.class)
-public class Mtest {
-
-    @Test
-    public void text_1() {
-        // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("com.example.hamburger", appContext.getPackageName());
-
-        new Thread(){
-            @Override
-            public void run() {
-                UserDao userDao = new UserDao();
-                int msg = userDao.login("1","1");
-            }
-        }.start();
-    }
-
-    @Test
-    public void text_2() {
-        // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("com.example.hamburger", appContext.getPackageName());
-
-        User user = new User();
-
-        user.setUserAccount("11");
-        user.setUserPassword("11");
-        user.setUserName("11");
-        user.setUserType(1);
-        user.setUserState(0);
-        user.setUserDel(0);
-
-        new Thread(){
-            @Override
-            public void run() {
-
-                int msg = 0;
-
-                UserDao userDao = new UserDao();
-
-                User uu = userDao.findUser(user.getUserAccount());
-                if(uu != null){
-                    msg = 1;
-                }
-                else{
-                    boolean flag = userDao.register(user);
-                    if(flag){
-                        msg = 2;
-                    }
-                }
-
-            }
-        }.start();
-
-    }
-}

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/MainActivity.java

@@ -1,70 +0,0 @@
-package com.example.hamburger;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.content.Intent;
-import android.os.Bundle;
-import android.widget.EditText;
-import android.view.View;
-import android.widget.Toast;
-import android.widget.Button;
-import android.os.Handler;
-import android.os.Message;
-import android.annotation.SuppressLint;
-import com.example.hamburger.dao.UserDao;
-
-public class MainActivity extends AppCompatActivity {
-
-    //这个类主要用来进行，账号密码的验证，以及监听事件的编写。
-    // 所以首先需要将一开始设计的输入文本框id name 和passwd获取。
-    EditText name;//创建账号
-    EditText passwd;//创建密码
-
-    private static final String TAG="mysql-party-MainActivity";
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-
-    }
-
-    public void login(View view){
-
-        EditText EditTextAccount = findViewById(R.id.name);
-        EditText EditTextPassword = findViewById(R.id.passwd);
-
-        Button button = (Button) findViewById(R.id.button);
-
-        new Thread(){
-            @Override
-            public void run() {
-                UserDao userDao = new UserDao();
-                int msg = userDao.login(EditTextAccount.getText().toString(),EditTextPassword.getText().toString());
-                hand1.sendEmptyMessage(msg);
-            }
-        }.start();
-    }
-
-    public void reg(View view){
-        startActivity(new Intent(getApplicationContext(),register.class));
-    }
-
-    @SuppressLint("HandlerLeak")
-    final Handler hand1 = new Handler() {
-        @Override
-        public void handleMessage(Message msg) {
-            if (msg.what == 0){
-                Toast.makeText(getApplicationContext(), "登录失败", Toast.LENGTH_LONG).show();
-            } else if (msg.what == 1) {
-                Toast.makeText(getApplicationContext(), "登录成功", Toast.LENGTH_LONG).show();
-                startActivity(new Intent(getApplicationContext(),MainActivity2.class));
-            } else if (msg.what == 2){
-                Toast.makeText(getApplicationContext(), "密码错误", Toast.LENGTH_LONG).show();
-            } else if (msg.what == 3){
-                Toast.makeText(getApplicationContext(), "账号不存在", Toast.LENGTH_LONG).show();
-            }
-        }
-    };
-
-}

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/MainActivity2.java

@@ -1,37 +0,0 @@
-package com.example.hamburger;
-
-import android.os.Bundle;
-
-import com.google.android.material.bottomnavigation.BottomNavigationView;
-
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.navigation.NavController;
-import androidx.navigation.Navigation;
-import androidx.navigation.ui.AppBarConfiguration;
-import androidx.navigation.ui.NavigationUI;
-
-import com.example.hamburger.databinding.ActivityMain2Binding;
-
-public class MainActivity2 extends AppCompatActivity {
-
-    private ActivityMain2Binding binding;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        binding = ActivityMain2Binding.inflate(getLayoutInflater());
-        setContentView(binding.getRoot());
-
-        BottomNavigationView navView = findViewById(R.id.nav_view);
-        // Passing each menu ID as a set of Ids because each
-        // menu should be considered as top level destinations.
-        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
-                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
-                .build();
-        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_main2);
-        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
-        NavigationUI.setupWithNavController(binding.navView, navController);
-    }
-
-}

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/dao/UserDao.java

@@ -1,247 +0,0 @@
-package com.example.hamburger.dao;
-
-
-import com.example.hamburger.entity.IsolationUser;
-import com.example.hamburger.entity.User;
-import com.example.hamburger.utils.JDBCUtils;
-
-import android.annotation.SuppressLint;
-import android.util.Log;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.util.HashMap;
-
-
-public class UserDao {
-
-    private static final String TAG = "mysql-party-UserDao";
-
-    /**
-     * function: 登录
-     * */
-    @SuppressLint("LongLogTag")
-    public int login(String userAccount, String userPassword){
-
-        HashMap<String, Object> map = new HashMap<>();
-        // 根据数据库名称，建立连接
-        Connection connection = JDBCUtils.getConn();
-        int msg = 0;
-        try {
-            // mysql简单的查询语句。这里是根据user表的userAccount字段来查询某条记录
-            String sql = "select * from user_ where userAccount = ?";
-            if (connection != null){// connection不为null表示与数据库建立了连接
-                PreparedStatement ps = connection.prepareStatement(sql);
-                if (ps != null){
-                    Log.e(TAG,"账号：" + userAccount);
-                    //根据账号进行查询
-                    ps.setString(1, userAccount);
-                    // 执行sql查询语句并返回结果集
-                    ResultSet rs = ps.executeQuery();
-                    int count = rs.getMetaData().getColumnCount();
-                    //将查到的内容储存在map里
-                    while (rs.next()){
-                        // 注意：下标是从1开始的
-                        for (int i = 1;i <= count;i++){
-                            String field = rs.getMetaData().getColumnName(i);
-                            map.put(field, rs.getString(field));
-                        }
-                    }
-                    connection.close();
-                    ps.close();
-
-                    if (map.size()!=0){
-                        StringBuilder s = new StringBuilder();
-                        //寻找密码是否匹配
-                        for (String key : map.keySet()){
-                            if(key.equals("userPassword")){
-                                if(userPassword.equals(map.get(key))){
-                                    msg = 1;            //密码正确
-                                }
-                                else
-                                    msg = 2;            //密码错误
-                                break;
-                            }
-                        }
-                    }else {
-                        Log.e(TAG, "查询结果为空");
-                        msg = 3;
-                    }
-                }else {
-                    msg = 0;
-                }
-            }else {
-                msg = 0;
-            }
-        }catch (Exception e){
-            e.printStackTrace();
-            Log.d(TAG, "异常login：" + e.getMessage());
-            msg = 0;
-        }
-        return msg;
-    }
-
-
-    /**
-     * function: 注册
-     * */
-    @SuppressLint("LongLogTag")
-    public boolean register(User user){
-        HashMap<String, Object> map = new HashMap<>();
-        // 根据数据库名称，建立连接
-        Connection connection = JDBCUtils.getConn();
-
-        try {
-            String sql = "insert into user_(userAccount,userPassword,userName,userType,userState,userDel) values (?,?,?,?,?,?)";
-            if (connection != null){// connection不为null表示与数据库建立了连接
-                PreparedStatement ps = connection.prepareStatement(sql);
-                if (ps != null){
-
-                    //将数据插入数据库
-                    ps.setString(1,user.getUserAccount());
-                    ps.setString(2,user.getUserPassword());
-                    ps.setString(3,user.getUserName());
-                    ps.setInt(4,user.getUserType());
-                    ps.setInt(5, user.getUserState());
-                    ps.setInt(6,user.getUserDel());
-
-                    // 执行sql查询语句并返回结果集
-                    int rs = ps.executeUpdate();
-                    if(rs>0)
-                        return true;
-                    else
-                        return false;
-                }else {
-                    return  false;
-                }
-            }else {
-                return  false;
-            }
-        }catch (Exception e){
-            e.printStackTrace();
-            Log.e(TAG, "异常register：" + e.getMessage());
-            return false;
-        }
-
-    }
-
-    /**
-     * function: 录入
-     * */
-    @SuppressLint("LongLogTag")
-    public boolean LogInfor(IsolationUser user){
-        HashMap<String, Object> map = new HashMap<>();
-        // 根据数据库名称，建立连接
-        Connection connection = JDBCUtils.getConn();
-
-        try {
-            String sql = "insert into infor_(name,gender,id_number,room_number,checkin_time) values (?,?,?,?,?)";
-            if (connection != null){// connection不为null表示与数据库建立了连接
-                PreparedStatement ps = connection.prepareStatement(sql);
-                if (ps != null){
-
-                    //将数据插入数据库
-                    ps.setString(1,user.getname());
-                    ps.setString(2,user.getGender());
-                    ps.setString(3,user.getIdnumber());
-                    ps.setInt(4,user.getRoomnumber());
-                    ps.setString(5, user.getCheckin_time());
-
-                    // 执行sql查询语句并返回结果集
-                    int rs = ps.executeUpdate();
-                    if(rs>0)
-                        return true;
-                    else
-                        return false;
-                }else {
-                    return  false;
-                }
-            }else {
-                return  false;
-            }
-        }catch (Exception e){
-            e.printStackTrace();
-            Log.e(TAG, "异常loginfor：" + e.getMessage());
-            return false;
-        }
-
-    }
-
-    /**
-     * function: 根据账号进行查找该用户是否存在
-     * */
-    @SuppressLint("LongLogTag")
-    public User findUser(String userAccount) {
-
-        // 根据数据库名称，建立连接
-        Connection connection = JDBCUtils.getConn();
-        User user = null;
-        try {
-            String sql = "select * from user_ where userAccount = ?";
-            if (connection != null){// connection不为null表示与数据库建立了连接
-                PreparedStatement ps = connection.prepareStatement(sql);
-                if (ps != null) {
-                    ps.setString(1, userAccount);
-                    ResultSet rs = ps.executeQuery();
-
-                    while (rs.next()) {
-                        //注意：下标是从1开始
-                        int id = rs.getInt(1);
-                        String userAccount1 = rs.getString(2);
-                        String userPassword = rs.getString(3);
-                        String userName = rs.getString(4);
-                        int userType = rs.getInt(5);
-                        int userState = rs.getInt(6);
-                        int userDel = rs.getInt(7);
-                        user = new User(userAccount1, userPassword);
-                    }
-                }
-            }
-        }catch (Exception e){
-            e.printStackTrace();
-            Log.d(TAG, "异常findUser：" + e.getMessage());
-            return null;
-        }
-        return user;
-    }
-
-    /**
-     * function: 根据姓名进行查找该用户是否存在 录入功能
-     * */
-    @SuppressLint("LongLogTag")
-    public IsolationUser findUser_(String name) {
-
-        // 根据数据库名称，建立连接
-        Connection connection = JDBCUtils.getConn();
-        IsolationUser user = null;
-        try {
-            String sql = "select * from infor_ where name  = ?";
-            if (connection != null){// connection不为null表示与数据库建立了连接
-                PreparedStatement ps = connection.prepareStatement(sql);
-                if (ps != null) {
-                    ps.setString(1, name);
-                    ResultSet rs = ps.executeQuery();
-
-                    while (rs.next()) {
-                        //注意：下标是从1开始
-                        int id = rs.getInt(1);
-                        String name1 = rs.getString(2);
-                        String gender = rs.getString(3);
-                        String idnumber = rs.getString(4);
-                        int roomnumber = rs.getInt(5);
-                        String checkin_time = rs.getString(6);
-                        user = new IsolationUser(name1,gender,idnumber,roomnumber,checkin_time);
-                    }
-                }
-            }
-        }catch (Exception e){
-            e.printStackTrace();
-            Log.d(TAG, "异常findUser：" + e.getMessage());
-            return null;
-        }
-        return user;
-    }
-
-}
-

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/entity/IsolationUser.java

@@ -1,72 +0,0 @@
-package com.example.hamburger.entity;
-
-public class IsolationUser {
-
-    private int id;
-    private String name;
-    private String gender;
-    private String idnumber;
-    private int roomnumber;
-    private String checkin_time;
-
-
-    public IsolationUser() {
-    }
-
-    public IsolationUser(String name, String gender, String idnumber, int roomnumber, String checkin_time) {
-        this.id = id;
-        this.name = name;
-        this.gender = gender;
-        this.idnumber = idnumber;
-        this.roomnumber = roomnumber;
-        this.checkin_time = checkin_time;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public void setId(int id) {
-        this.id = id;
-    }
-
-    public String getname() {
-        return name;
-    }
-
-    public void setname(String name) {
-        this.name = name;
-    }
-
-    public String getGender() {
-        return gender;
-    }
-
-    public void setGender(String gender) {
-        this.gender = gender;
-    }
-
-    public String getIdnumber() {
-        return idnumber;
-    }
-
-    public void setIdnumber(String idnumber) {
-        this.idnumber = idnumber;
-    }
-
-    public int getRoomnumber() {
-        return roomnumber;
-    }
-
-    public void setRoomnumber(int roomnumber) {
-        this.roomnumber = roomnumber;
-    }
-
-    public String getCheckin_time() {
-        return checkin_time;
-    }
-
-    public void setCheckin_time(String checkin_time) {
-        this.checkin_time = checkin_time;
-    }
-}

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/entity/User.java

@@ -1,83 +0,0 @@
-package com.example.hamburger.entity;
-
-public class User {
-
-    private int id;
-    private String userAccount;
-    private String userPassword;
-    private String userName;
-    private int userType;
-    private int userState;
-    private int userDel;
-
-
-    public User() {
-    }
-
-    public User(String userAccount, String userPassword) {
-        this.id = id;
-        this.userAccount = userAccount;
-        this.userPassword = userPassword;
-        this.userName = userName;
-        this.userType = userType;
-        this.userState = userState;
-        this.userDel = userDel;
-    }
-
-    public int getId() {
-        return id;
-    }
-
-    public void setId(int id) {
-        this.id = id;
-    }
-
-    public String getUserAccount() {
-        return userAccount;
-    }
-
-    public void setUserAccount(String userAccount) {
-        this.userAccount = userAccount;
-    }
-
-    public String getUserPassword() {
-        return userPassword;
-    }
-
-    public void setUserPassword(String userPassword) {
-        this.userPassword = userPassword;
-    }
-
-    public String getUserName() {
-        return userName;
-    }
-
-    public void setUserName(String userName) {
-        this.userName = userName;
-    }
-
-    public int getUserType() {
-        return userType;
-    }
-
-    public void setUserType(int userType) {
-        this.userType = userType;
-    }
-
-    public int getUserState() {
-        return userState;
-    }
-
-    public void setUserState(int userState) {
-        this.userState = userState;
-    }
-
-    public int getUserDel() {
-        return userDel;
-    }
-
-    public void setUserDel(int userDel) {
-        this.userDel = userDel;
-    }
-}
-

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/register.java

@@ -1,104 +0,0 @@
-package com.example.hamburger;
-
-import android.annotation.SuppressLint;
-import android.content.Intent;
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.Message;
-import android.view.View;
-import android.widget.Button;
-import android.widget.EditText;
-import android.widget.Toast;
-import com.example.hamburger.dao.UserDao;
-import com.example.hamburger.entity.User;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-public class register extends AppCompatActivity {
-    private static final String TAG = "mysql-party-register";
-    EditText userAccount = null;
-    EditText userPassword = null;
-    EditText userName = null;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_register);
-
-        userAccount = findViewById(R.id.userAccount);
-        userPassword = findViewById(R.id.userPassword);
-        userName = findViewById(R.id.userName);
-    }
-
-
-    public void register(View view){
-
-        String userAccount1 = userAccount.getText().toString();
-        String userPassword1 = userPassword.getText().toString();
-        String userName1 = userName.getText().toString();
-        User user = new User();
-        user.setUserAccount(userAccount1);
-        user.setUserPassword(userPassword1);
-        user.setUserName(userName1);
-        user.setUserType(1);
-        user.setUserState(0);
-        user.setUserDel(0);
-
-        new Thread(){
-            @Override
-            public void run() {
-                int msg = 0;
-                UserDao userDao = new UserDao();
-                User uu = userDao.findUser(user.getUserAccount());
-                if(uu != null){
-                    msg = 1;
-                }
-                else{
-                    boolean flag = userDao.register(user);
-                    if(flag){
-                        msg = 2;
-                    }
-                }
-                hand.sendEmptyMessage(msg);
-            }
-        }.start();
-
-
-    }
-    @SuppressLint("HandlerLeak")
-    final Handler hand = new Handler()
-    {
-        public void handleMessage(Message msg) {
-            if(msg.what == 0) {
-                Toast.makeText(getApplicationContext(),"注册失败",Toast.LENGTH_LONG).show();
-            } else if(msg.what == 1) {
-                Toast.makeText(getApplicationContext(),"该账号已经存在，请换一个账号",Toast.LENGTH_LONG).show();
-            } else if(msg.what == 2) {
-                Toast.makeText(getApplicationContext(), "注册成功", Toast.LENGTH_LONG).show();
-                Intent intent = new Intent();
-                //将想要传递的数据用putExtra封装在intent中
-                intent.putExtra("a","注册");
-                setResult(RESULT_CANCELED,intent);
-                finish();
-            }
-        }
-    };
-
-    public void Ret(View view){
-        //获取按钮
-        Button button = (Button) findViewById(R.id.ret);
-
-        //按钮进行监听
-        button.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                //监听按钮，如果点击，就跳转
-                Intent intent = new Intent();
-                //前一个（MainActivity.this）是目前页面，后面一个是要跳转的下一个页面
-                intent.setClass(register.this, MainActivity.class);
-                startActivity(intent);
-            }
-        });
-    }
-
-}

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/ui/home/Inform_input.java

@@ -1,101 +0,0 @@
-package com.example.hamburger.ui.home;
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.annotation.SuppressLint;
-import android.content.Intent;
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.Message;
-import android.view.View;
-import android.widget.EditText;
-import android.widget.Toast;
-
-import com.example.hamburger.R;
-import com.example.hamburger.dao.UserDao;
-import com.example.hamburger.entity.IsolationUser;
-
-public class Inform_input extends AppCompatActivity{
-
-    private static final String TAG = "mysql-party-register";
-    EditText name = null;
-    EditText gender = null;
-    EditText idnumber = null;
-    EditText roomnumber = null;
-    EditText checkin_time = null;
-
-
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.infor_input);
-
-        name = findViewById(R.id.name);
-        gender = findViewById(R.id.gender);
-        idnumber = findViewById(R.id.ID_number);
-        roomnumber = findViewById(R.id.roomnumber);
-        checkin_time = findViewById(R.id.checkin_time);
-
-    }
-
-    public void addInfor(View view){
-        String name1 = name.getText().toString();
-        String gender1 = gender.getText().toString();
-        String idnumber1 = idnumber.getText().toString();
-        int roomnumber1 = Integer.parseInt(roomnumber.getText().toString());
-        String checkin_time1 = checkin_time.getText().toString();
-
-        IsolationUser user=new IsolationUser();
-
-        user.setname(name1);
-        user.setGender(gender1);
-        user.setIdnumber(idnumber1);
-        user.setRoomnumber(roomnumber1);
-        user.setCheckin_time(checkin_time1);
-
-        new Thread(){
-            @Override
-            public void run() {
-
-                int msg = 0;
-
-                UserDao userDao = new UserDao();
-
-                IsolationUser uu = userDao.findUser_(user.getname());
-                if(uu != null){
-                    msg = 1;
-                }
-                else{
-                    boolean flag = userDao.LogInfor(user);
-                    if(flag){
-                        msg = 2;
-                    }
-                }
-                hand.sendEmptyMessage(msg);
-
-            }
-        }.start();
-    }
-
-    @SuppressLint("HandlerLeak")
-    final Handler hand = new Handler()
-    {
-        public void handleMessage(Message msg) {
-            if(msg.what == 0) {
-                Toast.makeText(getApplicationContext(),"录入失败",Toast.LENGTH_LONG).show();
-            } else if(msg.what == 1) {
-                Toast.makeText(getApplicationContext(),"该信息已经存在，请重新录入",Toast.LENGTH_LONG).show();
-            } else if(msg.what == 2) {
-                Toast.makeText(getApplicationContext(), "录入成功", Toast.LENGTH_LONG).show();
-                Intent intent = new Intent();
-                //将想要传递的数据用putExtra封装在intent中
-                intent.putExtra("a","录入");
-                setResult(RESULT_CANCELED,intent);
-                finish();
-            }
-        }
-    };
-
-    public void findInfor(View view){
-
-    }
-
-}

src/AndroidStudio_projects/app/src/main/java/com/example/hamburger/utils/JDBCUtils.java

@@ -1,37 +0,0 @@
-package com.example.hamburger.utils;
-
-import java.sql.Connection;
-import java.sql.DriverManager;
-
-/**
- * function： 数据库工具类，连接数据库用
- */
-public class JDBCUtils {
-    private static final String TAG = "mysql-party-JDBCUtils";
-
-    private static String driver = "com.mysql.jdbc.Driver";// MySql驱动
-
-    private static String dbName = "party";// 数据库名称
-
-    private static String user = "rootes";// 用户名
-
-    private static String password = "123456";// 密码
-
-    public static Connection getConn(){
-
-        Connection connection = null;
-        try{
-            Class.forName(driver);// 动态加载类
-            String ip = "192.168.43.7";// 写成本机地址，不能写成localhost，同时手机和电脑连接的网络必须是同一个
-
-            // 尝试建立到给定数据库URL的连接
-            connection = DriverManager.getConnection("jdbc:mysql://" + ip + ":3306/" + dbName,
-                    user, password);
-
-        }catch (Exception e){
-            e.printStackTrace();
-        }
-        return connection;
-    }
-}
-

src/AndroidStudio_projects/app/src/main/res/layout/activity_main.xml

@@ -1,140 +0,0 @@
-<?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"
-    android:background="#c8c7c5"
-    tools:context=".MainActivity">
-
-    <!--
-    思路
-    1.登录界面需要输入账号、密码，那么我们我要两个输入文本框。
-    2.需要点击一个登录，那么需要一个登录按钮，以及监听按钮的登陆事件。
-    3.作为一个简易的登录界面，我们并不加入数据库，添加一个账号密码识别认证即可。-->
-
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="center"
-        android:orientation="vertical"
-        tools:ignore="MissingConstraints"
-        tools:layout_editor_absoluteX="-25dp"
-        tools:layout_editor_absoluteY="291dp">
-
-        <!--android:layout_marginLeft 这个作用是设置和左边的间距
-        android:layout_marginTop 这个作用是设置和顶部的间距
-        android:ems  这个作用是限制输入长度
-        android:hint  这个作用是设置输入文本框内的提示内容
-        android:inputType  这个作用是选择输入的内容类型
-        android:textColorHint 这个作用是设置文本框内提示内容的颜色-->
-
-        <!--android:onClick 这个作用是与java文件中的监听事件对应
-        android:text 这个作用是给按钮一个文本显示-->
-        <TextView
-            android:id="@+id/title"
-            android:layout_width="400dp"
-            android:layout_height="100dp"
-            android:text="隔离酒店智慧管理系统"
-            android:textColor="#083684"
-            android:gravity="center"
-            android:textSize="30dp"
-            >
-
-        </TextView>
-
-        <ImageView
-            android:id="@+id/icon"
-            android:layout_width="100dp"
-            android:layout_height="100dp"
-            android:background="@drawable/hotel_logo"
-            app:layout_constraintTop_toBottomOf="@id/title"
-            >
-
-        </ImageView>
-
-        <EditText
-            android:id="@+id/name"
-            android:layout_width="264dp"
-            android:layout_height="50dp"
-            android:background="@color/white"
-            android:ems="12"
-            android:layout_marginTop="10dp"
-            android:hint="输入用户名"
-            android:inputType="text"
-            android:textColorHint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="75dp"
-            tools:layout_editor_absoluteY="256dp"></EditText>
-
-        <EditText
-            android:id="@+id/passwd"
-            android:layout_width="264dp"
-            android:layout_height="50dp"
-            android:background="@color/white"
-            android:layout_marginTop="10dp"
-            android:ems="12"
-            android:hint="输入密码"
-            android:inputType="textPassword"
-            android:textColorHint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="75dp"
-            tools:layout_editor_absoluteY="360dp"></EditText>
-
-        <!-- <RadioGroup
-             android:layout_width="wrap_content"
-             android:layout_height="wrap_content"
-             android:id="@+id/radioButton"
-             android:orientation="horizontal"
-             android:layout_constraintTop_toBottomOf="@id/passwd">
-
-         <RadioButton
-                 android:layout_width="wrap_content"
-                 android:layout_height="wrap_content"
-                 android:id="@+id/radioButton_1"
-                 android:text="隔离人员"
-                 android:textColor="#083684">
-
-             </RadioButton>
-
-             <RadioButton
-                 android:layout_width="wrap_content"
-                 android:layout_height="wrap_content"
-                 android:id="@+id/radioButton_2"
-                 android:text="管理员"
-                 android:textColor="#083684">
-
-             </RadioButton>
-
-         </RadioGroup>-->
-
-
-
-        <Button
-            android:id="@+id/button"
-            android:layout_width="200dp"
-            android:layout_height="48dp"
-            android:onClick="login"
-            android:text="登录"
-            android:layout_marginTop="10dp"
-            android:backgroundTint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="105dp"
-            tools:layout_editor_absoluteY="469dp" />
-        <!---->
-        <Button
-            android:id="@+id/register"
-            android:layout_width="200dp"
-            android:layout_height="48dp"
-            android:onClick="reg"
-            android:text="注册"
-            android:layout_marginTop="10dp"
-            android:backgroundTint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="105dp"
-            tools:layout_editor_absoluteY="469dp" />
-    </LinearLayout>
-    <!---->
-
-</androidx.constraintlayout.widget.ConstraintLayout>

src/AndroidStudio_projects/app/src/main/res/layout/activity_register.xml

@@ -1,96 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:background="#c8c7c5"
-    tools:context=".register">
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="center"
-        android:orientation="vertical"
-        tools:ignore="MissingConstraints"
-        tools:layout_editor_absoluteX="-25dp"
-        tools:layout_editor_absoluteY="291dp">
-
-        <TextView
-            android:layout_width="400dp"
-            android:layout_height="100dp"
-            android:text="酒店智慧管理系统"
-            android:textColor="#083684"
-            android:gravity="center"
-            android:textSize="30dp">
-
-        </TextView>
-
-        <EditText
-            android:id="@+id/userAccount"
-            android:layout_width="264dp"
-            android:layout_height="50dp"
-            android:background="@color/white"
-            android:ems="12"
-            android:layout_marginTop="10dp"
-            android:hint="创建用户名"
-            android:inputType="text"
-            android:textColorHint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="75dp"
-            tools:layout_editor_absoluteY="256dp"></EditText>
-
-        <EditText
-            android:id="@+id/userName"
-            android:layout_width="264dp"
-            android:layout_height="50dp"
-            android:background="@color/white"
-            android:layout_marginTop="10dp"
-            android:ems="12"
-            android:hint="创建昵称"
-            android:inputType="text"
-            android:textColorHint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="75dp"
-            tools:layout_editor_absoluteY="360dp"></EditText>
-
-        <EditText
-            android:id="@+id/userPassword"
-            android:layout_width="264dp"
-            android:layout_height="50dp"
-            android:background="@color/white"
-            android:layout_marginTop="10dp"
-            android:ems="12"
-            android:hint="创建密码"
-            android:inputType="textPassword"
-            android:textColorHint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="75dp"
-            tools:layout_editor_absoluteY="360dp"></EditText>
-
-        <Button
-            android:id="@+id/register"
-            android:layout_width="200dp"
-            android:layout_height="48dp"
-            android:onClick="register"
-            android:text="注册"
-            android:layout_marginTop="10dp"
-            android:backgroundTint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="105dp"
-            tools:layout_editor_absoluteY="469dp" />
-
-        <Button
-            android:id="@+id/ret"
-            android:layout_width="200dp"
-            android:layout_height="48dp"
-            android:onClick="Ret"
-            android:text="返回"
-            android:layout_marginTop="10dp"
-            android:backgroundTint="#083684"
-            tools:ignore="MissingConstraints"
-            tools:layout_editor_absoluteX="105dp"
-            tools:layout_editor_absoluteY="469dp" />
-
-    </LinearLayout>
-
-</androidx.constraintlayout.widget.ConstraintLayout>

src/AndroidStudio_projects/app/src/main/res/layout/infor_input.xml

@@ -1,177 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:background="#c8c7c5"
-    tools:context=".ui.home.Inform_input">
-
-
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical"
-        tools:layout_editor_absoluteX="219dp"
-        tools:layout_editor_absoluteY="207dp"
-        android:padding="50dp"
-
-        >
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-
-        <TextView
-            android:id="@+id/textView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:textSize="15sp"
-            android:text="姓名：" />
-
-        <EditText
-            android:id="@+id/name"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:ems="10"
-            android:inputType="text"
-            />
-    </LinearLayout>
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-
-        <TextView
-            android:id="@+id/textView1"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:textSize="15sp"
-            android:text="性别：" />
-
-        <EditText
-            android:id="@+id/gender"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:ems="10"
-            android:inputType="textPersonName"
-            />
-    </LinearLayout>
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-
-        <TextView
-            android:id="@+id/textView2"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:textSize="15sp"
-            android:text="身份证号："
-
-            />
-
-        <EditText
-            android:id="@+id/ID_number"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:ems="10"
-            android:inputType="text"
-            tools:ignore="DuplicateIds" />
-    </LinearLayout>
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal">
-
-
-            <TextView
-                android:id="@+id/textView3"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:textSize="15sp"
-                android:text="房间号："
-
-                />
-
-            <EditText
-                android:id="@+id/roomnumber"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:ems="10"
-                android:inputType="text"
-                />
-        </LinearLayout>
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal">
-
-
-            <TextView
-                android:id="@+id/textView4"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:textSize="15sp"
-                android:text="入住时间："
-
-                />
-
-            <EditText
-                android:id="@+id/checkin_time"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:ems="10"
-                android:inputType="text"
-                />
-        </LinearLayout>
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal">
-
-    </LinearLayout>
-
-        <Button
-            android:layout_marginTop="50dp"
-            android:id="@+id/button2"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="录入"
-            android:backgroundTint="#083684"
-            android:onClick="addInfor"
-            />
-
-        <Button
-            android:layout_marginTop="10dp"
-            android:id="@+id/button3"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="查询"
-            android:backgroundTint="#083684"
-            android:onClick="findInfor"
-            />
-
-        <TextView
-            android:id="@+id/tv_response"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textStyle="bold" />
-    </LinearLayout>
-</androidx.constraintlayout.widget.ConstraintLayout>

src/NoteApp281/.gitignore

@@ -1,15 +0,0 @@
-*.iml
-.gradle
-/local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
-.DS_Store
-/build
-/captures
-.externalNativeBuild
-.cxx
-local.properties

src/NoteApp281/.idea/.gitignore

@@ -1,3 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml

src/NoteApp281/.idea/compiler.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
-  </component>
-</project>

src/NoteApp281/.idea/gradle.xml

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleMigrationSettings" migrationVersion="1" />
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="testRunner" value="GRADLE" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="Embedded JDK" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

src/NoteApp281/.idea/jarRepositories.xml

@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RemoteRepositoriesConfiguration">
-    <remote-repository>
-      <option name="id" value="central" />
-      <option name="name" value="Maven Central repository" />
-      <option name="url" value="https://repo1.maven.org/maven2" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="jboss.community" />
-      <option name="name" value="JBoss Community repository" />
-      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="Google" />
-      <option name="name" value="Google" />
-      <option name="url" value="https://maven.aliyun.com/repository/google" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="BintrayJCenter" />
-      <option name="name" value="BintrayJCenter" />
-      <option name="url" value="https://maven.aliyun.com/repository/jcenter" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="maven" />
-      <option name="name" value="maven" />
-      <option name="url" value="http://maven.aliyun.com/nexus/content/repositories/jcenter" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="BintrayJCenter" />
-      <option name="name" value="BintrayJCenter" />
-      <option name="url" value="https://jcenter.bintray.com/" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="Google" />
-      <option name="name" value="Google" />
-      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
-    </remote-repository>
-  </component>
-</project>

src/NoteApp281/.idea/misc.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

src/NoteApp281/AddActivity.java

@@ -1,61 +0,0 @@
-package com.example.noteapp281;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.os.Bundle;
-import android.text.TextUtils;
-import android.view.View;
-import android.widget.EditText;
-
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.ToastUtil;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-public class AddActivity extends AppCompatActivity {
-
-    private EditText etTitle,etContent;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_add);
-
-        etTitle = findViewById(R.id.et_title);
-        etContent = findViewById(R.id.et_content);
-        mNoteDbOpenHelper = new NoteDbOpenHelper(this);
-
-    }
-
-    public void add(View view) {
-        String title = etTitle.getText().toString();
-        String content = etContent.getText().toString();
-        if (TextUtils.isEmpty(title)) {
-            ToastUtil.toastShort(this, "标题不能为空！");
-            return;
-        }
-
-        Note note = new Note();
-
-        note.setTitle(title);
-        note.setContent(content);
-        note.setCreatedTime(getCurrentTimeFormat());
-        long row = mNoteDbOpenHelper.insertData(note);
-        if (row != -1) {
-            ToastUtil.toastShort(this,"添加成功！");
-            this.finish();
-        }else {
-            ToastUtil.toastShort(this,"添加失败！");
-        }
-
-    }
-
-    private String getCurrentTimeFormat() {
-        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("YYYY年MM月dd HH:mm:ss");
-        Date date = new Date();
-        return simpleDateFormat.format(date);
-    }
-}

src/NoteApp281/EditActivity.java

@@ -1,71 +0,0 @@
-package com.example.noteapp281;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.content.Intent;
-import android.os.Bundle;
-import android.text.TextUtils;
-import android.view.View;
-import android.widget.EditText;
-
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.ToastUtil;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-public class EditActivity extends AppCompatActivity {
-
-    private Note note;
-    private EditText etTitle,etContent;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_edit);
-
-        etTitle = findViewById(R.id.et_title);
-        etContent = findViewById(R.id.et_content);
-
-        initData();
-
-    }
-
-    private void initData() {
-        Intent intent = getIntent();
-        note = (Note) intent.getSerializableExtra("note");
-        if (note != null) {
-            etTitle.setText(note.getTitle());
-            etContent.setText(note.getContent());
-        }
-        mNoteDbOpenHelper = new NoteDbOpenHelper(this);
-    }
-
-    public void save(View view) {
-        String title = etTitle.getText().toString();
-        String content = etContent.getText().toString();
-        if (TextUtils.isEmpty(title)) {
-            ToastUtil.toastShort(this, "标题不能为空！");
-            return;
-        }
-
-        note.setTitle(title);
-        note.setContent(content);
-        note.setCreatedTime(getCurrentTimeFormat());
-        long rowId = mNoteDbOpenHelper.updateData(note);
-        if (rowId != -1) {
-            ToastUtil.toastShort(this, "修改成功！");
-            this.finish();
-        }else{
-            ToastUtil.toastShort(this, "修改失败！");
-        }
-
-    }
-
-    private String getCurrentTimeFormat() {
-        SimpleDateFormat sdf = new SimpleDateFormat("YYYY年MM月dd日 HH:mm:ss");
-        Date date = new Date();
-        return sdf.format(date);
-    }
-}

src/NoteApp281/MainActivity.java

@@ -1,191 +0,0 @@
-package com.example.noteapp281;
-
-import android.app.SearchManager;
-import android.content.Context;
-import android.content.Intent;
-import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.appcompat.widget.SearchView;
-import androidx.recyclerview.widget.GridLayoutManager;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.example.noteapp281.adapter.MyAdapter;
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.SpfUtil;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
-
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-
-public class MainActivity extends AppCompatActivity {
-
-    private RecyclerView mRecyclerView;
-    private FloatingActionButton mBtnAdd;
-    private List<Note> mNotes;
-    private MyAdapter mMyAdapter;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-
-    public static final int MODE_LINEAR = 0;
-    public static final int MODE_GRID = 1;
-
-    public static final String KEY_LAYOUT_MODE = "key_layout_mode";
-
-    private int currentListLayoutMode = MODE_LINEAR;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-        initView();
-        initData();
-        initEvent();
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume();
-        refreshDataFromDb();
-        setListLayout();
-    }
-
-    private void setListLayout() {
-        currentListLayoutMode = SpfUtil.getIntWithDefault(this, KEY_LAYOUT_MODE, MODE_LINEAR);
-        if (currentListLayoutMode == MODE_LINEAR) {
-            setToLinearList();
-        }else{
-            setToGridList();
-        }
-    }
-
-    private void refreshDataFromDb() {
-        mNotes = getDataFromDB();
-        mMyAdapter.refreshData(mNotes);
-    }
-
-    private void initEvent() {
-        mMyAdapter = new MyAdapter(this, mNotes);
-        mRecyclerView.setAdapter(mMyAdapter);
-//        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
-//        mRecyclerView.setLayoutManager(linearLayoutManager);
-//        mMyAdapter.setViewType(MyAdapter.TYPE_LINEAR_LAYOUT);
-        setListLayout();
-
-    }
-
-    private void initData() {
-        mNotes = new ArrayList<>();
-        mNoteDbOpenHelper = new NoteDbOpenHelper(this);
-//
-//        for (int i = 0; i < 30; i++) {
-//            Note note = new Note();
-//            note.setTitle("这是标题"+i);
-//            note.setContent("这是内容"+i);
-//            note.setCreatedTime(getCurrentTimeFormat());
-//            mNotes.add(note);
-//        }
-
-//        mNotes = getDataFromDB();
-
-    }
-
-    private List<Note> getDataFromDB() {
-       return mNoteDbOpenHelper.queryAllFromDb();
-    }
-
-    private String getCurrentTimeFormat() {
-        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd HH:mm:ss");
-        Date date = new Date();
-        return simpleDateFormat.format(date);
-    }
-
-    private void initView() {
-        mRecyclerView = findViewById(R.id.rlv);
-    }
-
-
-    public void add(View view) {
-        Intent intent = new Intent(this, AddActivity.class);
-        startActivity(intent);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.menu_main, menu);
-        SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();
-
-        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
-            @Override
-            public boolean onQueryTextSubmit(String query) {
-                return false;
-            }
-
-            @Override
-            public boolean onQueryTextChange(String newText) {
-                mNotes = mNoteDbOpenHelper.queryFromDbByTitle(newText);
-                mMyAdapter.refreshData(mNotes);
-                return true;
-            }
-        });
-        return super.onCreateOptionsMenu(menu);
-    }
-
-
-    @Override
-    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
-        item.setChecked(true);
-
-        switch (item.getItemId()) {
-
-            case R.id.menu_linear:
-                setToLinearList();
-                currentListLayoutMode = MODE_LINEAR;
-                SpfUtil.saveInt(this,KEY_LAYOUT_MODE,MODE_LINEAR);
-
-                return true;
-            case R.id.menu_grid:
-
-                setToGridList();
-                currentListLayoutMode = MODE_GRID;
-                SpfUtil.saveInt(this,KEY_LAYOUT_MODE,MODE_GRID);
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-
-        }
-    }
-
-    private void setToLinearList() {
-        RecyclerView.LayoutManager linearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
-        mRecyclerView.setLayoutManager(linearLayoutManager);
-        mMyAdapter.setViewType(MyAdapter.TYPE_LINEAR_LAYOUT);
-        mMyAdapter.notifyDataSetChanged();
-    }
-
-
-    private void setToGridList() {
-        RecyclerView.LayoutManager gridLayoutManager = new GridLayoutManager(this, 2);
-        mRecyclerView.setLayoutManager(gridLayoutManager);
-        mMyAdapter.setViewType(MyAdapter.TYPE_GRID_LAYOUT);
-        mMyAdapter.notifyDataSetChanged();
-    }
-
-    @Override
-    public boolean onPrepareOptionsMenu(Menu menu) {
-        if (currentListLayoutMode == MODE_LINEAR) {
-            MenuItem item = menu.findItem(R.id.menu_linear);
-            item.setChecked(true);
-        } else {
-            menu.findItem(R.id.menu_grid).setChecked(true);
-        }
-        return super.onPrepareOptionsMenu(menu);
-    }
-}

src/NoteApp281/NoteDbOpenHelper.java

@@ -1,130 +0,0 @@
-package com.example.noteapp281;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
-import android.text.TextUtils;
-
-import com.example.noteapp281.bean.Note;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class NoteDbOpenHelper extends SQLiteOpenHelper {
-
-    private static final String DB_NAME = "noteSQLite.db";
-    private static final String TABLE_NAME_NOTE = "note";
-
-    private static final String CREATE_TABLE_SQL = "create table " + TABLE_NAME_NOTE + " (id integer primary key autoincrement, title text, content text, create_time text)";
-
-
-    public NoteDbOpenHelper(Context context) {
-        super(context, DB_NAME, null, 1);
-    }
-
-
-
-    @Override
-    public void onCreate(SQLiteDatabase db) {
-        db.execSQL(CREATE_TABLE_SQL);
-
-    }
-
-    @Override
-    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-
-    }
-
-    public long insertData(Note note) {
-
-        SQLiteDatabase db = getWritableDatabase();
-
-        ContentValues values = new ContentValues();
-        values.put("title", note.getTitle());
-        values.put("content", note.getContent());
-        values.put("create_time", note.getCreatedTime());
-
-        return db.insert(TABLE_NAME_NOTE, null, values);
-    }
-
-    public int deleteFromDbById(String id) {
-        SQLiteDatabase db = getWritableDatabase();
-//        return db.delete(TABLE_NAME_NOTE, "id = ?", new String[]{id});
-//        return db.delete(TABLE_NAME_NOTE, "id is ?", new String[]{id});
-        return db.delete(TABLE_NAME_NOTE, "id like ?", new String[]{id});
-    }
-
-    public int updateData(Note note) {
-
-        SQLiteDatabase db = getWritableDatabase();
-
-        ContentValues values = new ContentValues();
-        values.put("title", note.getTitle());
-        values.put("content", note.getContent());
-        values.put("create_time", note.getCreatedTime());
-
-        return db.update(TABLE_NAME_NOTE, values, "id like ?", new String[]{note.getId()});
-    }
-
-    public List<Note> queryAllFromDb() {
-
-        SQLiteDatabase db = getWritableDatabase();
-        List<Note> noteList = new ArrayList<>();
-
-        Cursor cursor = db.query(TABLE_NAME_NOTE, null, null, null, null, null, null);
-        if (cursor != null) {
-            while (cursor.moveToNext()) {
-                String id = cursor.getString(cursor.getColumnIndex("id"));
-                String title = cursor.getString(cursor.getColumnIndex("title"));
-                String content = cursor.getString(cursor.getColumnIndex("content"));
-                String createTime = cursor.getString(cursor.getColumnIndex("create_time"));
-
-                Note note = new Note();
-                note.setId(id);
-                note.setTitle(title);
-                note.setContent(content);
-                note.setCreatedTime(createTime);
-
-                noteList.add(note);
-            }
-            cursor.close();
-        }
-
-        return noteList;
-
-    }
-
-    public List<Note> queryFromDbByTitle(String title) {
-        if (TextUtils.isEmpty(title)) {
-            return queryAllFromDb();
-        }
-
-        SQLiteDatabase db = getWritableDatabase();
-        List<Note> noteList = new ArrayList<>();
-
-        Cursor cursor = db.query(TABLE_NAME_NOTE, null, "title like ?", new String[]{"%"+title+"%"}, null, null, null);
-
-        if (cursor != null) {
-
-            while (cursor.moveToNext()) {
-                String id = cursor.getString(cursor.getColumnIndex("id"));
-                String title2 = cursor.getString(cursor.getColumnIndex("title"));
-                String content = cursor.getString(cursor.getColumnIndex("content"));
-                String createTime = cursor.getString(cursor.getColumnIndex("create_time"));
-
-                Note note = new Note();
-                note.setId(id);
-                note.setTitle(title2);
-                note.setContent(content);
-                note.setCreatedTime(createTime);
-                noteList.add(note);
-            }
-            cursor.close();
-        }
-        return noteList;
-    }
-
-
-}

src/NoteApp281/adapter/MyAdapter.java

@@ -1,230 +0,0 @@
-package com.example.noteapp281.adapter;
-
-import android.app.Dialog;
-import android.content.Context;
-import android.content.Intent;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TextView;
-
-import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.example.noteapp281.EditActivity;
-import com.example.noteapp281.NoteDbOpenHelper;
-import com.example.noteapp281.R;
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.ToastUtil;
-
-import java.util.List;
-
-public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
-
-    private List<Note> mBeanList;
-    private LayoutInflater mLayoutInflater;
-    private Context mContext;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-
-    private int viewType;
-
-    public static int TYPE_LINEAR_LAYOUT = 0;
-    public static int TYPE_GRID_LAYOUT = 1;
-
-    public MyAdapter(Context context, List<Note> mBeanList){
-        this.mBeanList = mBeanList;
-        this.mContext = context;
-        mLayoutInflater = LayoutInflater.from(mContext);
-        mNoteDbOpenHelper = new NoteDbOpenHelper(mContext);
-    }
-
-    public void setViewType(int viewType) {
-        this.viewType = viewType;
-    }
-
-    @Override
-    public int getItemViewType(int position) {
-        return viewType;
-    }
-
-    @NonNull
-    @Override
-    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        if(viewType == TYPE_LINEAR_LAYOUT){
-            View view = mLayoutInflater.inflate(R.layout.list_item_layout, parent, false);
-            MyViewHolder myViewHolder = new MyViewHolder(view);
-            return myViewHolder;
-        }else if(viewType == TYPE_GRID_LAYOUT){
-            View view = mLayoutInflater.inflate(R.layout.list_item_grid_layout, parent, false);
-            MyGridViewHolder myGridViewHolder = new MyGridViewHolder(view);
-            return myGridViewHolder;
-        }
-
-        return null;
-    }
-
-    @Override
-    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
-        if (holder == null) {
-            return;
-        }
-        if(holder instanceof MyViewHolder){
-            bindMyViewHolder((MyViewHolder) holder, position);
-        } else if (holder instanceof MyGridViewHolder) {
-            bindGridViewHolder((MyGridViewHolder) holder, position);
-        }
-    }
-
-    private void bindMyViewHolder(MyViewHolder holder, int position) {
-        Note note = mBeanList.get(position);
-        holder.mTvTitle.setText(note.getTitle());
-        holder.mTvContent.setText(note.getContent());
-        holder.mTvTime.setText(note.getCreatedTime());
-        holder.rlContainer.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-
-                Intent intent = new Intent(mContext, EditActivity.class);
-                intent.putExtra("note", note);
-                mContext.startActivity(intent);
-            }
-        });
-
-        holder.rlContainer.setOnLongClickListener(new View.OnLongClickListener() {
-            @Override
-            public boolean onLongClick(View v) {
-                // 弹出弹窗
-                Dialog dialog = new Dialog(mContext, android.R.style.ThemeOverlay_Material_Dialog_Alert);
-                View dialogView = mLayoutInflater.inflate(R.layout.list_item_dialog_layout, null);
-                TextView tvDelete = dialogView.findViewById(R.id.tv_delete);
-                TextView tvEdit = dialogView.findViewById(R.id.tv_edit);
-
-                tvDelete.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        int row = mNoteDbOpenHelper.deleteFromDbById(note.getId());
-                        if (row > 0) {
-                            removeData(position);
-                        }
-                        dialog.dismiss();
-                    }
-                });
-
-
-                tvEdit.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Intent intent = new Intent(mContext, EditActivity.class);
-                        intent.putExtra("note", note);
-                        mContext.startActivity(intent);
-                        dialog.dismiss();
-                    }
-                });
-                dialog.setContentView(dialogView);
-                dialog.setCanceledOnTouchOutside(true);
-                dialog.show();
-                return true;
-            }
-        });
-    }
-
-
-    private void bindGridViewHolder(MyGridViewHolder holder, int position) {
-        Note note = mBeanList.get(position);
-        holder.mTvTitle.setText(note.getTitle());
-        holder.mTvContent.setText(note.getContent());
-        holder.mTvTime.setText(note.getCreatedTime());
-        holder.rlContainer.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-
-                Intent intent = new Intent(mContext, EditActivity.class);
-                intent.putExtra("note", note);
-                mContext.startActivity(intent);
-            }
-        });
-
-        holder.rlContainer.setOnLongClickListener(new View.OnLongClickListener() {
-            @Override
-            public boolean onLongClick(View v) {
-                // 弹出弹窗
-                Dialog dialog = new Dialog(mContext, android.R.style.ThemeOverlay_Material_Dialog_Alert);
-                View dialogView = mLayoutInflater.inflate(R.layout.list_item_dialog_layout, null);
-                TextView tvDelete = dialogView.findViewById(R.id.tv_delete);
-                TextView tvEdit = dialogView.findViewById(R.id.tv_edit);
-
-                tvDelete.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        int row = mNoteDbOpenHelper.deleteFromDbById(note.getId());
-                        if (row > 0) {
-                            removeData(position);
-                        }
-                        dialog.dismiss();
-                    }
-                });
-
-
-                tvEdit.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Intent intent = new Intent(mContext, EditActivity.class);
-                        intent.putExtra("note", note);
-                        mContext.startActivity(intent);
-                        dialog.dismiss();
-                    }
-                });
-                dialog.setContentView(dialogView);
-                dialog.setCanceledOnTouchOutside(true);
-                dialog.show();
-                return true;
-            }
-        });
-    }
-
-    @Override
-    public int getItemCount() {
-        return mBeanList.size();
-    }
-
-    public void refreshData(List<Note> notes) {
-        this.mBeanList = notes;
-        notifyDataSetChanged();
-    }
-
-    public void removeData(int pos) {
-        mBeanList.remove(pos);
-        notifyItemRemoved(pos);
-    }
-
-    class MyViewHolder extends RecyclerView.ViewHolder{
-        TextView mTvTitle;
-        TextView mTvContent;
-        TextView mTvTime;
-        ViewGroup rlContainer;
-        public MyViewHolder(@NonNull View itemView) {
-            super(itemView);
-            this.mTvTitle = itemView.findViewById(R.id.tv_title);
-            this.mTvContent = itemView.findViewById(R.id.tv_content);
-            this.mTvTime = itemView.findViewById(R.id.tv_time);
-            this.rlContainer = itemView.findViewById(R.id.rl_item_container);
-        }
-    }
-
-    class MyGridViewHolder extends RecyclerView.ViewHolder{
-
-        TextView mTvTitle;
-        TextView mTvContent;
-        TextView mTvTime;
-        ViewGroup rlContainer;
-
-        public MyGridViewHolder(@NonNull View itemView) {
-            super(itemView);
-            this.mTvTitle = itemView.findViewById(R.id.tv_title);
-            this.mTvContent = itemView.findViewById(R.id.tv_content);
-            this.mTvTime = itemView.findViewById(R.id.tv_time);
-            this.rlContainer = itemView.findViewById(R.id.rl_item_container);
-        }
-    }
-}

src/NoteApp281/app/.gitignore

@@ -1 +0,0 @@
-/build

src/NoteApp281/app/build.gradle

@@ -1,39 +0,0 @@
-plugins {
-    id 'com.android.application'
-}
-
-android {
-    compileSdkVersion 30
-    buildToolsVersion "30.0.3"
-
-    defaultConfig {
-        applicationId "com.example.noteapp281"
-        minSdkVersion 19
-        targetSdkVersion 30
-        versionCode 1
-        versionName "1.0"
-
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
-    }
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-}
-
-dependencies {
-
-    implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'com.google.android.material:material:1.2.1'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
-    testImplementation 'junit:junit:4.+'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
-}

src/NoteApp281/app/proguard-rules.pro

@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile

src/NoteApp281/app/src/androidTest/java/com/example/noteapp281/ExampleInstrumentedTest.java

@@ -1,26 +0,0 @@
-package com.example.noteapp281;
-
-import android.content.Context;
-
-import androidx.test.platform.app.InstrumentationRegistry;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.*;
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-@RunWith(AndroidJUnit4.class)
-public class ExampleInstrumentedTest {
-    @Test
-    public void useAppContext() {
-        // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("com.example.noteapp281", appContext.getPackageName());
-    }
-}

src/NoteApp281/app/src/main/AndroidManifest.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.noteapp281">
-
-    <application
-        android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
-        android:label="@string/app_name"
-        android:roundIcon="@mipmap/ic_launcher_round"
-        android:supportsRtl="true"
-        android:theme="@style/Theme.MyApplicationBase">
-        <activity android:name=".EditActivity"
-            android:label="编辑公告"
-            android:parentActivityName=".MainActivity"
-            ></activity>
-        <activity
-            android:name=".AddActivity"
-            android:label="添加公告"
-            android:parentActivityName=".MainActivity" />
-        <activity
-            android:name=".MainActivity"
-            android:label="公告栏">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
-    </application>
-
-</manifest>

src/NoteApp281/app/src/main/java/com/example/noteapp281/AddActivity.java

@@ -1,61 +0,0 @@
-package com.example.noteapp281;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.os.Bundle;
-import android.text.TextUtils;
-import android.view.View;
-import android.widget.EditText;
-
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.ToastUtil;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-public class AddActivity extends AppCompatActivity {
-
-    private EditText etTitle,etContent;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_add);
-
-        etTitle = findViewById(R.id.et_title);
-        etContent = findViewById(R.id.et_content);
-        mNoteDbOpenHelper = new NoteDbOpenHelper(this);
-
-    }
-
-    public void add(View view) {
-        String title = etTitle.getText().toString();
-        String content = etContent.getText().toString();
-        if (TextUtils.isEmpty(title)) {
-            ToastUtil.toastShort(this, "标题不能为空！");
-            return;
-        }
-
-        Note note = new Note();
-
-        note.setTitle(title);
-        note.setContent(content);
-        note.setCreatedTime(getCurrentTimeFormat());
-        long row = mNoteDbOpenHelper.insertData(note);
-        if (row != -1) {
-            ToastUtil.toastShort(this,"添加成功！");
-            this.finish();
-        }else {
-            ToastUtil.toastShort(this,"添加失败！");
-        }
-
-    }
-
-    private String getCurrentTimeFormat() {
-        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("YYYY年MM月dd HH:mm:ss");
-        Date date = new Date();
-        return simpleDateFormat.format(date);
-    }
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/EditActivity.java

@@ -1,71 +0,0 @@
-package com.example.noteapp281;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.content.Intent;
-import android.os.Bundle;
-import android.text.TextUtils;
-import android.view.View;
-import android.widget.EditText;
-
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.ToastUtil;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-public class EditActivity extends AppCompatActivity {
-
-    private Note note;
-    private EditText etTitle,etContent;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_edit);
-
-        etTitle = findViewById(R.id.et_title);
-        etContent = findViewById(R.id.et_content);
-
-        initData();
-
-    }
-
-    private void initData() {
-        Intent intent = getIntent();
-        note = (Note) intent.getSerializableExtra("note");
-        if (note != null) {
-            etTitle.setText(note.getTitle());
-            etContent.setText(note.getContent());
-        }
-        mNoteDbOpenHelper = new NoteDbOpenHelper(this);
-    }
-
-    public void save(View view) {
-        String title = etTitle.getText().toString();
-        String content = etContent.getText().toString();
-        if (TextUtils.isEmpty(title)) {
-            ToastUtil.toastShort(this, "标题不能为空！");
-            return;
-        }
-
-        note.setTitle(title);
-        note.setContent(content);
-        note.setCreatedTime(getCurrentTimeFormat());
-        long rowId = mNoteDbOpenHelper.updateData(note);
-        if (rowId != -1) {
-            ToastUtil.toastShort(this, "修改成功！");
-            this.finish();
-        }else{
-            ToastUtil.toastShort(this, "修改失败！");
-        }
-
-    }
-
-    private String getCurrentTimeFormat() {
-        SimpleDateFormat sdf = new SimpleDateFormat("YYYY年MM月dd日 HH:mm:ss");
-        Date date = new Date();
-        return sdf.format(date);
-    }
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/MainActivity.java

@@ -1,191 +0,0 @@
-package com.example.noteapp281;
-
-import android.app.SearchManager;
-import android.content.Context;
-import android.content.Intent;
-import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.appcompat.widget.SearchView;
-import androidx.recyclerview.widget.GridLayoutManager;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.example.noteapp281.adapter.MyAdapter;
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.SpfUtil;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
-
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-
-public class MainActivity extends AppCompatActivity {
-
-    private RecyclerView mRecyclerView;
-    private FloatingActionButton mBtnAdd;
-    private List<Note> mNotes;
-    private MyAdapter mMyAdapter;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-
-    public static final int MODE_LINEAR = 0;
-    public static final int MODE_GRID = 1;
-
-    public static final String KEY_LAYOUT_MODE = "key_layout_mode";
-
-    private int currentListLayoutMode = MODE_LINEAR;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-        initView();
-        initData();
-        initEvent();
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume();
-        refreshDataFromDb();
-        setListLayout();
-    }
-
-    private void setListLayout() {
-        currentListLayoutMode = SpfUtil.getIntWithDefault(this, KEY_LAYOUT_MODE, MODE_LINEAR);
-        if (currentListLayoutMode == MODE_LINEAR) {
-            setToLinearList();
-        }else{
-            setToGridList();
-        }
-    }
-
-    private void refreshDataFromDb() {
-        mNotes = getDataFromDB();
-        mMyAdapter.refreshData(mNotes);
-    }
-
-    private void initEvent() {
-        mMyAdapter = new MyAdapter(this, mNotes);
-        mRecyclerView.setAdapter(mMyAdapter);
-//        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
-//        mRecyclerView.setLayoutManager(linearLayoutManager);
-//        mMyAdapter.setViewType(MyAdapter.TYPE_LINEAR_LAYOUT);
-        setListLayout();
-
-    }
-
-    private void initData() {
-        mNotes = new ArrayList<>();
-        mNoteDbOpenHelper = new NoteDbOpenHelper(this);
-//
-//        for (int i = 0; i < 30; i++) {
-//            Note note = new Note();
-//            note.setTitle("这是标题"+i);
-//            note.setContent("这是内容"+i);
-//            note.setCreatedTime(getCurrentTimeFormat());
-//            mNotes.add(note);
-//        }
-
-//        mNotes = getDataFromDB();
-
-    }
-
-    private List<Note> getDataFromDB() {
-       return mNoteDbOpenHelper.queryAllFromDb();
-    }
-
-    private String getCurrentTimeFormat() {
-        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd HH:mm:ss");
-        Date date = new Date();
-        return simpleDateFormat.format(date);
-    }
-
-    private void initView() {
-        mRecyclerView = findViewById(R.id.rlv);
-    }
-
-
-    public void add(View view) {
-        Intent intent = new Intent(this, AddActivity.class);
-        startActivity(intent);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.menu_main, menu);
-        SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();
-
-        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
-            @Override
-            public boolean onQueryTextSubmit(String query) {
-                return false;
-            }
-
-            @Override
-            public boolean onQueryTextChange(String newText) {
-                mNotes = mNoteDbOpenHelper.queryFromDbByTitle(newText);
-                mMyAdapter.refreshData(mNotes);
-                return true;
-            }
-        });
-        return super.onCreateOptionsMenu(menu);
-    }
-
-
-    @Override
-    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
-        item.setChecked(true);
-
-        switch (item.getItemId()) {
-
-            case R.id.menu_linear:
-                setToLinearList();
-                currentListLayoutMode = MODE_LINEAR;
-                SpfUtil.saveInt(this,KEY_LAYOUT_MODE,MODE_LINEAR);
-
-                return true;
-            case R.id.menu_grid:
-
-                setToGridList();
-                currentListLayoutMode = MODE_GRID;
-                SpfUtil.saveInt(this,KEY_LAYOUT_MODE,MODE_GRID);
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-
-        }
-    }
-
-    private void setToLinearList() {
-        RecyclerView.LayoutManager linearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
-        mRecyclerView.setLayoutManager(linearLayoutManager);
-        mMyAdapter.setViewType(MyAdapter.TYPE_LINEAR_LAYOUT);
-        mMyAdapter.notifyDataSetChanged();
-    }
-
-
-    private void setToGridList() {
-        RecyclerView.LayoutManager gridLayoutManager = new GridLayoutManager(this, 2);
-        mRecyclerView.setLayoutManager(gridLayoutManager);
-        mMyAdapter.setViewType(MyAdapter.TYPE_GRID_LAYOUT);
-        mMyAdapter.notifyDataSetChanged();
-    }
-
-    @Override
-    public boolean onPrepareOptionsMenu(Menu menu) {
-        if (currentListLayoutMode == MODE_LINEAR) {
-            MenuItem item = menu.findItem(R.id.menu_linear);
-            item.setChecked(true);
-        } else {
-            menu.findItem(R.id.menu_grid).setChecked(true);
-        }
-        return super.onPrepareOptionsMenu(menu);
-    }
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/NoteDbOpenHelper.java

@@ -1,130 +0,0 @@
-package com.example.noteapp281;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteOpenHelper;
-import android.text.TextUtils;
-
-import com.example.noteapp281.bean.Note;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class NoteDbOpenHelper extends SQLiteOpenHelper {
-
-    private static final String DB_NAME = "noteSQLite.db";
-    private static final String TABLE_NAME_NOTE = "note";
-
-    private static final String CREATE_TABLE_SQL = "create table " + TABLE_NAME_NOTE + " (id integer primary key autoincrement, title text, content text, create_time text)";
-
-
-    public NoteDbOpenHelper(Context context) {
-        super(context, DB_NAME, null, 1);
-    }
-
-
-
-    @Override
-    public void onCreate(SQLiteDatabase db) {
-        db.execSQL(CREATE_TABLE_SQL);
-
-    }
-
-    @Override
-    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-
-    }
-
-    public long insertData(Note note) {
-
-        SQLiteDatabase db = getWritableDatabase();
-
-        ContentValues values = new ContentValues();
-        values.put("title", note.getTitle());
-        values.put("content", note.getContent());
-        values.put("create_time", note.getCreatedTime());
-
-        return db.insert(TABLE_NAME_NOTE, null, values);
-    }
-
-    public int deleteFromDbById(String id) {
-        SQLiteDatabase db = getWritableDatabase();
-//        return db.delete(TABLE_NAME_NOTE, "id = ?", new String[]{id});
-//        return db.delete(TABLE_NAME_NOTE, "id is ?", new String[]{id});
-        return db.delete(TABLE_NAME_NOTE, "id like ?", new String[]{id});
-    }
-
-    public int updateData(Note note) {
-
-        SQLiteDatabase db = getWritableDatabase();
-
-        ContentValues values = new ContentValues();
-        values.put("title", note.getTitle());
-        values.put("content", note.getContent());
-        values.put("create_time", note.getCreatedTime());
-
-        return db.update(TABLE_NAME_NOTE, values, "id like ?", new String[]{note.getId()});
-    }
-
-    public List<Note> queryAllFromDb() {
-
-        SQLiteDatabase db = getWritableDatabase();
-        List<Note> noteList = new ArrayList<>();
-
-        Cursor cursor = db.query(TABLE_NAME_NOTE, null, null, null, null, null, null);
-        if (cursor != null) {
-            while (cursor.moveToNext()) {
-                String id = cursor.getString(cursor.getColumnIndex("id"));
-                String title = cursor.getString(cursor.getColumnIndex("title"));
-                String content = cursor.getString(cursor.getColumnIndex("content"));
-                String createTime = cursor.getString(cursor.getColumnIndex("create_time"));
-
-                Note note = new Note();
-                note.setId(id);
-                note.setTitle(title);
-                note.setContent(content);
-                note.setCreatedTime(createTime);
-
-                noteList.add(note);
-            }
-            cursor.close();
-        }
-
-        return noteList;
-
-    }
-
-    public List<Note> queryFromDbByTitle(String title) {
-        if (TextUtils.isEmpty(title)) {
-            return queryAllFromDb();
-        }
-
-        SQLiteDatabase db = getWritableDatabase();
-        List<Note> noteList = new ArrayList<>();
-
-        Cursor cursor = db.query(TABLE_NAME_NOTE, null, "title like ?", new String[]{"%"+title+"%"}, null, null, null);
-
-        if (cursor != null) {
-
-            while (cursor.moveToNext()) {
-                String id = cursor.getString(cursor.getColumnIndex("id"));
-                String title2 = cursor.getString(cursor.getColumnIndex("title"));
-                String content = cursor.getString(cursor.getColumnIndex("content"));
-                String createTime = cursor.getString(cursor.getColumnIndex("create_time"));
-
-                Note note = new Note();
-                note.setId(id);
-                note.setTitle(title2);
-                note.setContent(content);
-                note.setCreatedTime(createTime);
-                noteList.add(note);
-            }
-            cursor.close();
-        }
-        return noteList;
-    }
-
-
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/adapter/MyAdapter.java

@@ -1,230 +0,0 @@
-package com.example.noteapp281.adapter;
-
-import android.app.Dialog;
-import android.content.Context;
-import android.content.Intent;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TextView;
-
-import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.example.noteapp281.EditActivity;
-import com.example.noteapp281.NoteDbOpenHelper;
-import com.example.noteapp281.R;
-import com.example.noteapp281.bean.Note;
-import com.example.noteapp281.util.ToastUtil;
-
-import java.util.List;
-
-public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
-
-    private List<Note> mBeanList;
-    private LayoutInflater mLayoutInflater;
-    private Context mContext;
-
-    private NoteDbOpenHelper mNoteDbOpenHelper;
-
-    private int viewType;
-
-    public static int TYPE_LINEAR_LAYOUT = 0;
-    public static int TYPE_GRID_LAYOUT = 1;
-
-    public MyAdapter(Context context, List<Note> mBeanList){
-        this.mBeanList = mBeanList;
-        this.mContext = context;
-        mLayoutInflater = LayoutInflater.from(mContext);
-        mNoteDbOpenHelper = new NoteDbOpenHelper(mContext);
-    }
-
-    public void setViewType(int viewType) {
-        this.viewType = viewType;
-    }
-
-    @Override
-    public int getItemViewType(int position) {
-        return viewType;
-    }
-
-    @NonNull
-    @Override
-    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        if(viewType == TYPE_LINEAR_LAYOUT){
-            View view = mLayoutInflater.inflate(R.layout.list_item_layout, parent, false);
-            MyViewHolder myViewHolder = new MyViewHolder(view);
-            return myViewHolder;
-        }else if(viewType == TYPE_GRID_LAYOUT){
-            View view = mLayoutInflater.inflate(R.layout.list_item_grid_layout, parent, false);
-            MyGridViewHolder myGridViewHolder = new MyGridViewHolder(view);
-            return myGridViewHolder;
-        }
-
-        return null;
-    }
-
-    @Override
-    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
-        if (holder == null) {
-            return;
-        }
-        if(holder instanceof MyViewHolder){
-            bindMyViewHolder((MyViewHolder) holder, position);
-        } else if (holder instanceof MyGridViewHolder) {
-            bindGridViewHolder((MyGridViewHolder) holder, position);
-        }
-    }
-
-    private void bindMyViewHolder(MyViewHolder holder, int position) {
-        Note note = mBeanList.get(position);
-        holder.mTvTitle.setText(note.getTitle());
-        holder.mTvContent.setText(note.getContent());
-        holder.mTvTime.setText(note.getCreatedTime());
-        holder.rlContainer.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-
-                Intent intent = new Intent(mContext, EditActivity.class);
-                intent.putExtra("note", note);
-                mContext.startActivity(intent);
-            }
-        });
-
-        holder.rlContainer.setOnLongClickListener(new View.OnLongClickListener() {
-            @Override
-            public boolean onLongClick(View v) {
-                // 弹出弹窗
-                Dialog dialog = new Dialog(mContext, android.R.style.ThemeOverlay_Material_Dialog_Alert);
-                View dialogView = mLayoutInflater.inflate(R.layout.list_item_dialog_layout, null);
-                TextView tvDelete = dialogView.findViewById(R.id.tv_delete);
-                TextView tvEdit = dialogView.findViewById(R.id.tv_edit);
-
-                tvDelete.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        int row = mNoteDbOpenHelper.deleteFromDbById(note.getId());
-                        if (row > 0) {
-                            removeData(position);
-                        }
-                        dialog.dismiss();
-                    }
-                });
-
-
-                tvEdit.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Intent intent = new Intent(mContext, EditActivity.class);
-                        intent.putExtra("note", note);
-                        mContext.startActivity(intent);
-                        dialog.dismiss();
-                    }
-                });
-                dialog.setContentView(dialogView);
-                dialog.setCanceledOnTouchOutside(true);
-                dialog.show();
-                return true;
-            }
-        });
-    }
-
-
-    private void bindGridViewHolder(MyGridViewHolder holder, int position) {
-        Note note = mBeanList.get(position);
-        holder.mTvTitle.setText(note.getTitle());
-        holder.mTvContent.setText(note.getContent());
-        holder.mTvTime.setText(note.getCreatedTime());
-        holder.rlContainer.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-
-                Intent intent = new Intent(mContext, EditActivity.class);
-                intent.putExtra("note", note);
-                mContext.startActivity(intent);
-            }
-        });
-
-        holder.rlContainer.setOnLongClickListener(new View.OnLongClickListener() {
-            @Override
-            public boolean onLongClick(View v) {
-                // 弹出弹窗
-                Dialog dialog = new Dialog(mContext, android.R.style.ThemeOverlay_Material_Dialog_Alert);
-                View dialogView = mLayoutInflater.inflate(R.layout.list_item_dialog_layout, null);
-                TextView tvDelete = dialogView.findViewById(R.id.tv_delete);
-                TextView tvEdit = dialogView.findViewById(R.id.tv_edit);
-
-                tvDelete.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        int row = mNoteDbOpenHelper.deleteFromDbById(note.getId());
-                        if (row > 0) {
-                            removeData(position);
-                        }
-                        dialog.dismiss();
-                    }
-                });
-
-
-                tvEdit.setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Intent intent = new Intent(mContext, EditActivity.class);
-                        intent.putExtra("note", note);
-                        mContext.startActivity(intent);
-                        dialog.dismiss();
-                    }
-                });
-                dialog.setContentView(dialogView);
-                dialog.setCanceledOnTouchOutside(true);
-                dialog.show();
-                return true;
-            }
-        });
-    }
-
-    @Override
-    public int getItemCount() {
-        return mBeanList.size();
-    }
-
-    public void refreshData(List<Note> notes) {
-        this.mBeanList = notes;
-        notifyDataSetChanged();
-    }
-
-    public void removeData(int pos) {
-        mBeanList.remove(pos);
-        notifyItemRemoved(pos);
-    }
-
-    class MyViewHolder extends RecyclerView.ViewHolder{
-        TextView mTvTitle;
-        TextView mTvContent;
-        TextView mTvTime;
-        ViewGroup rlContainer;
-        public MyViewHolder(@NonNull View itemView) {
-            super(itemView);
-            this.mTvTitle = itemView.findViewById(R.id.tv_title);
-            this.mTvContent = itemView.findViewById(R.id.tv_content);
-            this.mTvTime = itemView.findViewById(R.id.tv_time);
-            this.rlContainer = itemView.findViewById(R.id.rl_item_container);
-        }
-    }
-
-    class MyGridViewHolder extends RecyclerView.ViewHolder{
-
-        TextView mTvTitle;
-        TextView mTvContent;
-        TextView mTvTime;
-        ViewGroup rlContainer;
-
-        public MyGridViewHolder(@NonNull View itemView) {
-            super(itemView);
-            this.mTvTitle = itemView.findViewById(R.id.tv_title);
-            this.mTvContent = itemView.findViewById(R.id.tv_content);
-            this.mTvTime = itemView.findViewById(R.id.tv_time);
-            this.rlContainer = itemView.findViewById(R.id.rl_item_container);
-        }
-    }
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/bean/Note.java

@@ -1,54 +0,0 @@
-package com.example.noteapp281.bean;
-
-import java.io.Serializable;
-
-public class Note implements Serializable {
-
-    private String title;
-    private String content;
-    private String createdTime;
-    private String id;
-
-
-    public String getTitle() {
-        return title;
-    }
-
-    public void setTitle(String title) {
-        this.title = title;
-    }
-
-    public String getContent() {
-        return content;
-    }
-
-    public void setContent(String content) {
-        this.content = content;
-    }
-
-    public String getCreatedTime() {
-        return createdTime;
-    }
-
-    public void setCreatedTime(String createdTime) {
-        this.createdTime = createdTime;
-    }
-
-    public String getId() {
-        return id;
-    }
-
-    public void setId(String id) {
-        this.id = id;
-    }
-
-    @Override
-    public String toString() {
-        return "Note{" +
-                "title='" + title + '\'' +
-                ", content='" + content + '\'' +
-                ", createdTime='" + createdTime + '\'' +
-                ", id='" + id + '\'' +
-                '}';
-    }
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/util/SpfUtil.java

@@ -1,38 +0,0 @@
-package com.example.noteapp281.util;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-
-public class SpfUtil {
-
-    private static String SPF_NAME = "noteSpf";
-
-    public static void saveString(Context context, String key, String value) {
-        SharedPreferences spf = context.getSharedPreferences(SPF_NAME, Context.MODE_PRIVATE);
-        SharedPreferences.Editor edit = spf.edit();
-        edit.putString(key, value);
-        edit.apply();
-    }
-
-    public static String getString(Context context, String key) {
-        SharedPreferences spf = context.getSharedPreferences(SPF_NAME, Context.MODE_PRIVATE);
-        return spf.getString(key, "");
-    }
-
-    public static void saveInt(Context context, String key, int value) {
-        SharedPreferences spf = context.getSharedPreferences(SPF_NAME, Context.MODE_PRIVATE);
-        SharedPreferences.Editor edit = spf.edit();
-        edit.putInt(key, value);
-        edit.apply();
-    }
-
-    public static int getInt(Context context, String key) {
-        SharedPreferences spf = context.getSharedPreferences(SPF_NAME, Context.MODE_PRIVATE);
-        return spf.getInt(key, -1);
-    }
-
-    public static int getIntWithDefault(Context context, String key, int defValue) {
-        SharedPreferences spf = context.getSharedPreferences(SPF_NAME, Context.MODE_PRIVATE);
-        return spf.getInt(key, defValue);
-    }
-}

src/NoteApp281/app/src/main/java/com/example/noteapp281/util/ToastUtil.java

@@ -1,15 +0,0 @@
-package com.example.noteapp281.util;
-
-import android.content.Context;
-import android.widget.Toast;
-
-public class ToastUtil {
-
-    public static void toastShort(Context context, String msg) {
-        Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
-    }
-
-    public static void toastLong(Context context, String msg) {
-        Toast.makeText(context, msg, Toast.LENGTH_LONG).show();
-    }
-}

src/NoteApp281/app/src/main/res/drawable-v24/btn_bg_selector.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item android:state_pressed="true" android:drawable="@color/colorPrimary"/>
-    <item android:state_pressed="false" android:drawable="@color/colorPrimaryDark"/>
-</selector>

src/NoteApp281/app/src/main/res/drawable-v24/edit_text_bg.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle"
-    >
-
-    <stroke android:width="3dp" android:color="#083684"/>
-
-    <corners android:radius="10dp" />
-</shape>

src/NoteApp281/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -1,30 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:aapt="http://schemas.android.com/aapt"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
-        <aapt:attr name="android:fillColor">
-            <gradient
-                android:endX="85.84757"
-                android:endY="92.4963"
-                android:startX="42.9492"
-                android:startY="49.59793"
-                android:type="linear">
-                <item
-                    android:color="#44000000"
-                    android:offset="0.0" />
-                <item
-                    android:color="#00000000"
-                    android:offset="1.0" />
-            </gradient>
-        </aapt:attr>
-    </path>
-    <path
-        android:fillColor="#FFFFFF"
-        android:fillType="nonZero"
-        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
-        android:strokeWidth="1"
-        android:strokeColor="#00000000" />
-</vector>

src/NoteApp281/app/src/main/res/drawable/btn_bg_selector.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item android:state_pressed="true" android:drawable="@color/mycolor"/>
-    <item android:state_pressed="false" android:drawable="@color/colorPrimaryDark"/>
-</selector>

src/NoteApp281/app/src/main/res/drawable/edit_text_bg.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle"
-    >
-
-    <stroke android:width="3dp" android:color="#083684"/>
-
-    <corners android:radius="10dp" />
-</shape>

src/NoteApp281/app/src/main/res/drawable/ic_baseline_search_24.xml

@@ -1,5 +0,0 @@
-<vector android:height="24dp" android:tint="#FFFFFF"
-    android:viewportHeight="24" android:viewportWidth="24"
-    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="@android:color/white" android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
-</vector>

src/NoteApp281/app/src/main/res/drawable/ic_launcher_background.xml

@@ -1,170 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <path
-        android:fillColor="#083684"
-        android:pathData="M0,0h108v108h-108z" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M9,0L9,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,0L19,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,0L29,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,0L39,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,0L49,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,0L59,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,0L69,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,0L79,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M89,0L89,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M99,0L99,108"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,9L108,9"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,19L108,19"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,29L108,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,39L108,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,49L108,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,59L108,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,69L108,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,79L108,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,89L108,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M0,99L108,99"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,29L89,29"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,39L89,39"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,49L89,49"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,59L89,59"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,69L89,69"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M19,79L89,79"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M29,19L29,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M39,19L39,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M49,19L49,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M59,19L59,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M69,19L69,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-    <path
-        android:fillColor="#00000000"
-        android:pathData="M79,19L79,89"
-        android:strokeWidth="0.8"
-        android:strokeColor="#33FFFFFF" />
-</vector>

src/NoteApp281/app/src/main/res/layout/activity_add.xml

@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ScrollView 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"
-    android:orientation="vertical"
-    tools:context=".AddActivity">
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="vertical"
-        android:padding="10dp">
-
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal">
-
-            <TextView
-                style="@style/MyTextStyle"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="标题" />
-
-            <EditText
-                android:id="@+id/et_title"
-                style="@style/MyEditStyle"
-                android:maxLines="1"
-                android:layout_width="match_parent"
-                android:layout_marginLeft="5dp" />
-        </LinearLayout>
-
-        <TextView
-            style="@style/MyTextStyle"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="内容" />
-
-        <EditText
-            android:id="@+id/et_content"
-            style="@style/MyEditStyle"
-            android:layout_width="match_parent"
-            android:gravity="left"
-            android:layout_height="300dp"
-            android:layout_marginTop="5dp" />
-
-        <Button
-            style="@style/MyBtnStyle"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:onClick="add"
-            android:text="添加" />
-    </LinearLayout>
-
-
-</ScrollView>

src/NoteApp281/app/src/main/res/layout/activity_edit.xml

@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ScrollView 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"
-    android:orientation="vertical"
-    tools:context=".EditActivity">
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="vertical"
-        android:padding="10dp">
-
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal">
-
-            <TextView
-                style="@style/MyTextStyle"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="标题" />
-
-            <EditText
-                android:id="@+id/et_title"
-                style="@style/MyEditStyle"
-                android:maxLines="1"
-                android:layout_width="match_parent"
-                android:layout_marginLeft="5dp" />
-        </LinearLayout>
-
-        <TextView
-            style="@style/MyTextStyle"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="内容" />
-
-        <EditText
-            android:id="@+id/et_content"
-            style="@style/MyEditStyle"
-            android:layout_width="match_parent"
-            android:gravity="left"
-            android:layout_height="300dp"
-            android:layout_marginTop="5dp" />
-
-        <Button
-            style="@style/MyBtnStyle"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:onClick="save"
-            android:text="保存" />
-    </LinearLayout>
-
-
-</ScrollView>

src/NoteApp281/app/src/main/res/layout/activity_main.xml

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<FrameLayout 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">
-
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/rlv"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-    <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:src="@android:drawable/ic_input_add"
-        android:layout_gravity="right|bottom"
-        android:layout_margin="20dp"
-        android:onClick="add"
-        android:backgroundTint="#083684"
-
-        />
-
-
-</FrameLayout>

src/NoteApp281/app/src/main/res/layout/list_item_dialog_layout.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical"
-    >
-
-    <TextView
-        android:layout_width="match_parent"
-        android:id="@+id/tv_delete"
-        android:text="删除"
-        style="@style/MyTextStyle"
-        />
-
-    <TextView
-        android:layout_width="match_parent"
-        android:id="@+id/tv_edit"
-        android:text="编辑"
-        style="@style/MyTextStyle"
-        />
-</LinearLayout>

src/NoteApp281/app/src/main/res/layout/list_item_grid_layout.xml

@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:orientation="vertical"
-    android:id="@+id/rl_item_container"
-    android:padding="10dp">
-
-
-    <TextView
-        android:id="@+id/tv_title"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:ellipsize="end"
-        android:maxLines="1"
-        android:gravity="left"
-        android:text="你好"
-        android:textSize="20sp"
-        android:textStyle="bold"
-        />
-
-    <TextView
-        android:id="@+id/tv_content"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="5dp"
-        android:ellipsize="end"
-        android:maxLines="2"
-        android:text="你好拉拉拉拉谁在用琵琶弹奏一曲东风破"
-        android:textSize="16sp" />
-
-    <TextView
-        android:id="@+id/tv_time"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:gravity="center"
-        android:text="2021-5-30 22:40:34"
-        android:textSize="14sp" />
-</LinearLayout>

src/NoteApp281/app/src/main/res/layout/list_item_layout.xml

@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:id="@+id/rl_item_container"
-    android:padding="10dp">
-
-
-    <TextView
-        android:id="@+id/tv_title"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:ellipsize="end"
-        android:maxLines="1"
-        android:gravity="left"
-        android:layout_toLeftOf="@id/tv_time"
-        android:text="你好"
-        android:layout_alignParentLeft="true"
-        android:textSize="20sp"
-        android:textStyle="bold"
-        />
-
-    <TextView
-        android:id="@+id/tv_content"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_below="@id/tv_title"
-        android:layout_marginTop="5dp"
-        android:ellipsize="end"
-        android:maxLines="2"
-        android:text="你好拉拉拉拉谁在用琵琶弹奏一曲东风破"
-        android:textSize="16sp" />
-
-    <TextView
-        android:id="@+id/tv_time"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_alignBottom="@id/tv_title"
-        android:layout_alignParentRight="true"
-        android:gravity="center"
-        android:text="2021-5-30 22:40:34"
-        android:textSize="14sp" />
-</RelativeLayout>

src/NoteApp281/app/src/main/res/menu/menu_main.xml

@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <item
-        android:id="@+id/menu_search"
-        android:title="搜索"
-        app:showAsAction="always"
-        android:icon="@drawable/ic_baseline_search_24"
-        app:actionViewClass="androidx.appcompat.widget.SearchView" />
-
-
-    <group android:checkableBehavior="single" >
-
-    <item android:id="@+id/menu_linear"
-        android:title="列表布局"
-        app:showAsAction="never"
-        />
-    <item android:id="@+id/menu_grid"
-        android:title="网格布局"
-        app:showAsAction="never"
-        />
-    </group>
-</menu>

src/NoteApp281/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-</adaptive-icon>

src/NoteApp281/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-</adaptive-icon>