第五次实验代码胡译予

My/.gitignore

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+*.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

My/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml

My/.idea/compiler.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="17" />
+  </component>
+</project>

My/.idea/deploymentTargetDropDown.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetDropDown">
+    <value>
+      <entry key="MainActivity">
+        <State />
+      </entry>
+    </value>
+  </component>
+</project>

My/.idea/gradle.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveExternalAnnotations" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

My/.idea/migrations.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>

My/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

My/app/.gitignore

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+/build

My/app/build.gradle.kts

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+plugins {
+    alias(libs.plugins.androidApplication)
+}
+
+android {
+    namespace = "com.example.my"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "com.example.my"
+        minSdk = 24
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    buildFeatures {
+        aidl = true
+    }
+}
+
+dependencies {
+
+    implementation(libs.appcompat)
+    implementation(libs.material)
+    implementation(libs.activity)
+    implementation(libs.constraintlayout)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.ext.junit)
+    androidTestImplementation(libs.espresso.core)
+}

My/app/proguard-rules.pro

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+# 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

My/app/src/androidTest/java/com/example/my/ExampleInstrumentedTest.java

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+package com.example.my;
+
+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.my", appContext.getPackageName());
+    }
+}

My/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="Manifest.permission.ACCESS_FINE_LOCATION" />
+
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MyApplication"
+        tools:targetApi="31">
+        <activity
+            android:name=".BlankActivity"
+            android:exported="false" />
+        <activity
+            android:name=".RegisterActivity"
+            android:exported="false" />
+        <activity
+            android:name=".MainActivity"
+            android:exported="false" />
+        <activity
+            android:name=".Sea_deluser_Activity"
+            android:label="Sea Delete User Activity">
+        </activity>
+        <activity
+            android:name=".LoginActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

My/app/src/main/java/com/example/my/Adapter/LeftListAdapter.java

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+package com.example.my.Adapter;
+
+import android.annotation.SuppressLint;
+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.my.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class LeftListAdapter extends RecyclerView.Adapter<LeftListAdapter.MyHolder> {
+
+    private List<String> dataList = new ArrayList<>();
+
+    private int currentIndex=0;
+
+    public LeftListAdapter(List<String> dataList) {
+        this.dataList = dataList;
+    }
+
+    @NonNull
+    @Override
+    public MyHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.left_list_item, null);
+        return new MyHolder(view);
+    }
+
+    @Override
+    @SuppressLint("RecyclerView")
+    public void onBindViewHolder(@NonNull MyHolder holder, int position) {
+        //绑定数据
+        String name = dataList.get(position);
+        holder.name.setText(name);
+
+        //分类的点击事件
+        holder.itemView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (null != mLeftListOnClickItemListener) {
+                    mLeftListOnClickItemListener.onItemClick(position);
+                }
+            }
+        });
+
+        if (currentIndex == position) {
+            holder.itemView.setBackgroundResource(R.drawable.type_select_bg);
+        }else {
+            holder.itemView.setBackgroundResource(R.drawable.type_selected_no);
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return dataList.size();
+    }
+
+    static class MyHolder extends RecyclerView.ViewHolder {
+        TextView name;
+
+        public MyHolder(@NonNull View itemView) {
+            super(itemView);
+            name = itemView.findViewById(R.id.name);
+        }
+    }
+
+    private LeftListOnClickItemListener mLeftListOnClickItemListener;
+
+
+    public void setmLeftListOnClickItemListener(LeftListOnClickItemListener mLeftListOnClickItemListener) {
+        this.mLeftListOnClickItemListener = mLeftListOnClickItemListener;
+    }
+
+    public interface LeftListOnClickItemListener {
+        void onItemClick(int position);
+    }
+
+    public void setCurrentIndex(int position) {
+        this.currentIndex = position;
+        notifyDataSetChanged();
+    }
+
+}

My/app/src/main/java/com/example/my/Adapter/RightListAdapter.java

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+package com.example.my.Adapter;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.my.R;
+import com.example.my.entity.ProductInfo;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RightListAdapter extends RecyclerView.Adapter<RightListAdapter.MyHolder> {
+
+    private List<ProductInfo> mProductInfo = new ArrayList<>();
+
+    public void setListData(List<ProductInfo> list) {
+        this.mProductInfo = list;
+        //刷新
+        notifyDataSetChanged();
+    }
+
+    @NonNull
+    @Override
+    public MyHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.right_list_item, null);
+        return new MyHolder(view);
+
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull MyHolder holder, int position) {
+        //绑定数据
+        ProductInfo productInfo = mProductInfo.get(position);
+        holder.pro_img.setImageResource(productInfo.getImg());
+        holder.pro_title.setText(productInfo.getTitle());
+        holder.pro_detail.setText(productInfo.getDetails());
+        holder.pro_price.setText("￥" + productInfo.getPrice());  //int+String 变成文本类型
+
+    }
+
+    @Override
+    public int getItemCount() {
+        return mProductInfo.size();
+    }
+
+    static class MyHolder extends RecyclerView.ViewHolder {
+        ImageView pro_img;
+        TextView pro_title;
+        TextView pro_detail;
+        TextView pro_price;
+
+        public MyHolder(@NonNull View itemView) {
+            super(itemView);
+            pro_img = itemView.findViewById(R.id.pro_img);
+            pro_title = itemView.findViewById(R.id.pro_title);
+            pro_detail = itemView.findViewById(R.id.pro_detail);
+            pro_price = itemView.findViewById(R.id.pro_price);
+
+        }
+    }
+}

My/app/src/main/java/com/example/my/BlankActivity.java

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+package com.example.my;
+
+import android.content.Intent;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class BlankActivity extends AppCompatActivity implements View.OnClickListener {
+
+    public MySQLiteOpenHelper user;
+    public SQLiteDatabase sqL_read;
+    private Button search_del_btn, insert_btn, update_btn;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_blank);
+        user = new MySQLiteOpenHelper(BlankActivity.this);
+        System.out.println("userDB=" + user);
+        /*只有调用getReadableDatabase()或者getWriteableDatabase()函数后才能返回一个SQLiteDatabase对象*/
+        sqL_read = user.getReadableDatabase();
+        System.out.println("sqLiteDatabase=" + sqL_read);
+
+        init();
+    }
+
+    //组件初始化方法
+    public void init() {
+        search_del_btn = findViewById(R.id.search_delete);
+        insert_btn = findViewById(R.id.add);
+        update_btn = findViewById(R.id.update);
+        //添加监听
+        search_del_btn.setOnClickListener(this);
+        insert_btn.setOnClickListener(this);
+        update_btn.setOnClickListener(this);
+    }
+
+    @Override
+    public void onClick(View view) {
+        Intent intent;
+        if (view.getId() == R.id.search_delete) {
+            intent = new Intent(BlankActivity.this, Sea_deluser_Activity.class);
+            startActivity(intent);
+        } else if (view.getId() == R.id.add) {
+            intent = new Intent(BlankActivity.this, RegisterActivity.class);
+            startActivity(intent);
+        } else if (view.getId() == R.id.update) {
+            intent = new Intent(BlankActivity.this, Updareuser_Activity.class);
+            startActivity(intent);
+        } else {
+            // 默认情况
+        }
+    }
+}

My/app/src/main/java/com/example/my/LoginActivity.java

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+package com.example.my;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import com.example.my.entity.User;
+
+public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
+    private TextView register, login;
+    private EditText username, password;
+    private MySQLiteOpenHelper mySQLiteOpenHelper;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        mySQLiteOpenHelper = new MySQLiteOpenHelper(this);
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_login);
+        find();
+
+    }
+    public void find(){
+        login = findViewById(R.id.login);
+        register = findViewById(R.id.register);
+        username = findViewById(R.id.userEdit);
+        password = findViewById(R.id.passEdit);
+        login.setOnClickListener(this);
+        register.setOnClickListener(this);
+    }
+    @Override
+    public void onClick(View v) {
+        if (v.getId() == R.id.login) {
+            String n = username.getText().toString();
+            String p = password.getText().toString();
+            if (n.equals("")) {
+                Toast.makeText(this, "请输入账号", Toast.LENGTH_SHORT).show();
+            } else if (p.equals("")) {
+                Toast.makeText(this, "请输入密码", Toast.LENGTH_SHORT).show();
+            } else {
+                boolean login = mySQLiteOpenHelper.login(n, p);
+                if (login) {
+                    Toast.makeText(this, "登录成功！", Toast.LENGTH_SHORT).show();
+                    User select = mySQLiteOpenHelper.select(n);
+                    Intent home = new Intent(LoginActivity.this, MainActivity.class);
+                    Bundle bundle = new Bundle();
+                    bundle.putString("username", select.username);
+                    bundle.putString("emil", select.email);
+                    bundle.putString("phone", select.phone);
+                    home.putExtras(bundle);
+                    username.setText("");
+                    password.setText("");
+                    startActivity(home);
+                } else {
+                    Toast.makeText(this, "账号或密码错误，请重新输入", Toast.LENGTH_SHORT).show();
+                    password.setText("");
+                }
+            }
+        }
+        else if(v.getId()==R.id.register){
+            Intent re = new Intent(LoginActivity.this, RegisterActivity.class);
+            startActivity(re);
+        }
+    }
+    @Override
+    public void onPointerCaptureChanged(boolean hasCapture) {
+        super.onPointerCaptureChanged(hasCapture);
+    }
+
+}

My/app/src/main/java/com/example/my/MainActivity.java

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+package com.example.my;
+
+import android.app.FragmentTransaction;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.MenuItem;
+
+import androidx.activity.EdgeToEdge;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+import com.example.my.fragment.BlankFragment;
+import com.example.my.fragment.ChatFragment;
+import com.example.my.fragment.HomeFragment;
+import com.example.my.fragment.RegFragment;
+import com.example.my.fragment.SearchFragment;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+
+public class MainActivity extends AppCompatActivity {
+
+    private HomeFragment homeFragment;
+    private ChatFragment chatFragment;
+    private SearchFragment searchFragment;
+    private RegFragment regFragment;
+    private BlankFragment blankFragment;
+
+    private BottomNavigationView bottomNavigationView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        //初始化控件
+        bottomNavigationView = findViewById(R.id.BottomNavigation);
+        //bottomNavigationView设置点击事件
+        bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
+            @Override
+            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
+                if (menuItem.getItemId() == R.id.home) {
+                    selectedFragment(0);
+                } else if (menuItem.getItemId() == R.id.chat) {
+                    selectedFragment(1);
+                } else if (menuItem.getItemId() == R.id.search) {
+                    selectedFragment(2);
+                } else if (menuItem.getItemId() == R.id.reg) {
+                    selectedFragment(3);
+                } else {
+                    selectedFragment(4);
+                }
+                return true;
+            }
+        });
+    }
+    //默认首页选中
+
+    private void selectedFragment(int position) {
+        androidx.fragment.app.FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
+        hideFragment(fragmentTransaction);
+        if (position == 0) {
+            if (homeFragment == null) {
+                homeFragment = new HomeFragment();
+                fragmentTransaction.add(R.id.content, homeFragment);
+            } else {
+                fragmentTransaction.show(homeFragment);
+            }
+        } else if (position == 1) {
+            if (chatFragment == null) {
+                chatFragment = new ChatFragment();
+                fragmentTransaction.add(R.id.content, chatFragment);
+            } else {
+                fragmentTransaction.show(chatFragment);
+            }
+        } else if (position == 2) {
+            if (searchFragment == null) {
+                searchFragment = new SearchFragment();
+                fragmentTransaction.add(R.id.content, searchFragment);
+            } else {
+                fragmentTransaction.show(searchFragment);
+            }
+        } else if (position == 3) {
+            if (regFragment == null) {
+                regFragment = new RegFragment();
+                fragmentTransaction.add(R.id.content, regFragment);
+            } else {
+                fragmentTransaction.show(regFragment);
+            }
+        } else {
+
+            if (blankFragment == null ) { // shouldStartBlankActivity 可以是一个额外的条件，用于判断是否应该启动 Activity
+                Intent intent = new Intent(this, BlankActivity.class);
+                // 你可以在这里添加额外的数据到 intent 中  
+                // 例如: intent.putExtra("key", value);  
+                startActivity(intent);
+            } else {
+                // 如果 blankFragment 不为 null，并且不应该启动新的 Activity，  
+                // 那么你可以在这里处理 blankFragment 的显示逻辑，比如使用 fragmentTransaction 来显示它  
+                // 例如: fragmentTransaction.show(blankFragment);  
+                // 但根据你的原始代码，这部分逻辑看起来是省略的，因为你只在 else 分支中显示了 Fragment  
+            }
+        }
+
+        //提交
+        fragmentTransaction.commit();
+
+    }
+
+    private void hideFragment(androidx.fragment.app.FragmentTransaction fragmentTransaction) {
+        if (homeFragment != null) {
+            fragmentTransaction.hide(homeFragment);
+        }
+        if (chatFragment != null) {
+            fragmentTransaction.hide(chatFragment);
+        }
+        if (searchFragment != null) {
+            fragmentTransaction.hide(searchFragment);
+        }
+        if (regFragment != null) {
+            fragmentTransaction.hide(regFragment);
+        }
+    }
+}

My/app/src/main/java/com/example/my/MySQLiteOpenHelper.java

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+package com.example.my;
+
+
+import android.annotation.SuppressLint;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteConstraintException;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+
+import com.example.my.entity.User;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MySQLiteOpenHelper extends SQLiteOpenHelper {
+
+    //数据库名字
+    private static final String DATABASE_NAME = "mydatabase";
+    private static final int DATABASE_VERSION = 1;
+    private static final String TABLE_USERS = "users";
+    private static final String COLUMN_ID = "id";
+    private static final String COLUMN_USERNAME = "username";
+    private static final String COLUMN_EMAIL = "email";
+    private static final String COLUMN_PHONE = "phone";
+    private static final String COLUMN_PASSWORD = "password";
+
+    // 数据库创建语句
+    private static final String DATABASE_CREATE =
+            "CREATE TABLE " + TABLE_USERS + " (" +
+                    COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
+                    COLUMN_USERNAME + " TEXT NOT NULL, " +
+                    COLUMN_EMAIL + " TEXT NOT NULL, " +
+                    COLUMN_PHONE + " TEXT NOT NULL, " +
+                    COLUMN_PASSWORD + " TEXT NOT NULL);";
+
+    public MySQLiteOpenHelper(Context context) {
+        super(context, DATABASE_NAME, null, DATABASE_VERSION);
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase database) {
+        database.execSQL(DATABASE_CREATE);
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+
+    }
+
+    public long register(User user) {
+        SQLiteDatabase db = getWritableDatabase();
+        ContentValues values = new ContentValues();
+        values.put("username", user.getUsername());
+        values.put("password", user.getPassword());
+        values.put("phone", user.getPhone());
+        values.put("email", user.getEmil());
+
+        try {
+            long userId = db.insert("users", null, values);
+            // 添加日志记录以便调试
+            Log.d("Register", "New user inserted with ID: " + userId);
+            return userId;
+        } catch (SQLiteConstraintException e) {
+            // 处理主键冲突等异常
+            Log.e("Register", "Error inserting new user: " + e.getMessage());
+            return -1;
+        } catch (Exception e) {
+            // 处理其他可能的异常
+            Log.e("Register", "Error inserting new user: " + e.getMessage());
+            return -1;
+        }
+    }
+
+    //登录方法实现
+    public boolean login(String username, String password) {
+        SQLiteDatabase db = getWritableDatabase();
+        boolean result = false;
+        Cursor users = db.query("users", null, "username like?", new String[]{username}, null, null, null);
+        if (users != null) {
+            while (users.moveToNext()) {
+                @SuppressLint("Range") String username1 = users.getString(users.getColumnIndex("username"));
+                Log.i("users", "login: " + username1);
+                @SuppressLint("Range") String password1 = users.getString(users.getColumnIndex("password"));
+                Log.i("users", "login: " + password1);
+                // 假设我们在这里验证密码
+                if (password1.equals(password)) {
+                    result = true;
+                    break; // 找到匹配的用户名和密码，退出循环
+                }
+            }
+            users.close();
+        }
+        return result;
+    }
+
+    //根据用户名查找当前登录用户信息
+    public User select(String username) {
+        SQLiteDatabase db = getWritableDatabase();
+        User SelectUser = new User();
+        Cursor user = db.query("users", new String[]{"username", "phone", "email"}, "username=?", new String[]{username}, null, null, null);
+        while (user.moveToNext()) {
+            @SuppressLint("Range") String uname = user.getString(user.getColumnIndex("username"));
+            @SuppressLint("Range") String phone = user.getString(user.getColumnIndex("phone"));
+            @SuppressLint("Range") String email = user.getString(user.getColumnIndex("email"));
+            SelectUser.setUsername(uname);
+            SelectUser.setPhone(phone);
+            SelectUser.setEmail(email);
+        }
+        user.close();
+        return SelectUser;
+    }
+
+    public void adddata(SQLiteDatabase sqLiteDatabase, String username, String paswd, String email, String phone) {
+        ContentValues values = new ContentValues();
+        values.put("username", username);
+        values.put("paswd", paswd);
+        values.put("email", email);
+        values.put("phone", phone);
+        sqLiteDatabase.insert("users", null, values);
+        sqLiteDatabase.close();
+    }
+
+    //删除数据
+    public void delete(SQLiteDatabase sqLiteDatabase, int id) {
+        /*第一个参数：表名；第二个参数：需要删除的属性名，？代表占位符；第三个参数：属性名的属性值*/
+        sqLiteDatabase.delete("users", "id=?", new String[]{id + ""});
+        sqLiteDatabase.close();
+    }
+
+    //更新数据
+    public void update(SQLiteDatabase sqLiteDatabase, int id, String username,
+                       String paswd, String phone, int email) {
+        //创建一个ContentValues对象
+        ContentValues values = new ContentValues();
+        //以键值对的形式插入
+        values.put("username", username);
+        values.put("paswd", paswd);
+        values.put("phone", phone);
+        values.put("email", email);
+        //执行修改的方法
+        sqLiteDatabase.update("users", values, "id=?", new String[]{id + ""});
+        sqLiteDatabase.close();
+    }
+
+    //查询数据
+    public List<User> querydata(SQLiteDatabase sqLiteDatabase) {
+        Cursor cursor = sqLiteDatabase.query("users", null, null, null, null, null, "id ASC");
+        List<User> list = new ArrayList<User>();
+        while (cursor.moveToNext()) {
+            @SuppressLint("Range") int id = cursor.getInt(cursor.getColumnIndex("id"));
+            Log.i("SQLite", "id=" + id);
+            String username = cursor.getString(0);
+            Log.i("SQLite", "username=" + username);
+            String paswd = cursor.getString(1);
+            Log.i("SQLite", "paswd=" + paswd);
+            String phone = cursor.getString(2);
+            Log.i("SQLite", "phone=" + phone);
+            String email = cursor.getString(4);
+            Log.i("SQLite", "email=" + email);
+            list.add(new User(id, username, paswd, phone, email));
+        }
+        cursor.close();
+        sqLiteDatabase.close();
+        return list;
+    }
+
+}

My/app/src/main/java/com/example/my/RegisterActivity.java

@@ -0,0 +1,105 @@
+package com.example.my;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.my.entity.User;
+
+public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {
+
+    private String name_str = "";
+    private String phone_str = " ";
+    private String email_str = " ";
+    private String paswd_str = " ";
+    EditText name_edit, phone_edit, email_edit, paswd_edit;
+    Button button;
+    //使用MySQLiteOpenHelper类中的方法
+    private MySQLiteOpenHelper mySQLiteOpenHelper;
+
+
+    //控制注册按钮点击完后不给点击了
+    boolean flag = false;
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        mySQLiteOpenHelper = new MySQLiteOpenHelper(this);
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_register);
+
+//        组件初始化
+        name_edit = (EditText) findViewById(R.id.nameEdit);
+        phone_edit = (EditText) findViewById(R.id.pnumEdit);
+        email_edit = (EditText) findViewById(R.id.userEdit);
+        paswd_edit = (EditText) findViewById(R.id.passEdit);
+//        添加监听事件
+        button = (Button) findViewById(R.id.submit);
+        button.setOnClickListener((View.OnClickListener) this);
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view.getId() == R.id.submit) {
+//            name_str = name_edit.getText().toString();
+//            phone_str = phone_edit.getText().toString();
+//            email_str = email_edit.getText().toString();
+//            paswd_str = paswd_edit.getText().toString();
+//            Intent intent = new Intent(RegisterActivity.this, RegisterActivity2.class);
+//            Bundle bundle = new Bundle();
+//            bundle.putString("name", name_str);
+//            bundle.putString("phone", phone_str);
+//            bundle.putString("email", email_str);
+//            bundle.putString("paswd", paswd_str);
+//            intent.putExtras(bundle);
+//            startActivity(intent);
+            register();
+            gobak(view);
+        }
+    }
+
+    public void register(){
+        String ru = name_edit.getText().toString();
+        String rps = paswd_edit.getText().toString();
+        String rph = phone_edit.getText().toString();
+        String rem = email_edit.getText().toString();
+        User user = new User(ru,rps,rph,rem);
+        if(ru.equals("")){
+            Toast.makeText(this, "账号不能为空！", Toast.LENGTH_SHORT).show();
+        } else if (rps.equals("")) {
+            Toast.makeText(this, "密码不能为空！", Toast.LENGTH_SHORT).show();
+        } else if (rph.equals("")) {
+            Toast.makeText(this, "电话不能为空!", Toast.LENGTH_SHORT).show();
+        }else if(rem.equals("")){
+            Toast.makeText(this, "邮箱不能为空！", Toast.LENGTH_SHORT).show();
+        }else{
+            long r1 = mySQLiteOpenHelper.register(user);
+            button.setEnabled(false);
+            button.setTextColor(0xFFD0EFC6);
+            if(r1!=-1){
+                Toast.makeText(this, "注册成功", Toast.LENGTH_SHORT).show();
+            }else{
+                Toast.makeText(this, "注册失败！", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+    //跳转回登录页面
+    public void gobak(View view){
+        Intent gl = new Intent(RegisterActivity.this,LoginActivity.class);
+        startActivity(gl);
+    }
+    @Override
+    public void onPointerCaptureChanged(boolean hasCapture) {
+        super.onPointerCaptureChanged(hasCapture);
+    }
+
+
+
+}

My/app/src/main/java/com/example/my/Sea_deluser_Activity.java

@@ -0,0 +1,104 @@
+package com.example.my;
+
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.view.Window;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.my.entity.User;
+
+import java.util.List;
+
+public class Sea_deluser_Activity extends AppCompatActivity {
+    public ListView user_list;
+    private List<User> list;
+    private SQLiteDatabase sqLiteDatabase;
+    //假设数据库用户不超过10个
+    private String[] user_mes;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+
+            super.onCreate(savedInstanceState);
+            Log.i("SQLite","Sea_del");
+            requestWindowFeature(Window.FEATURE_NO_TITLE);
+            setContentView(R.layout.user_search_delete);
+            user_list=findViewById(R.id.mes);
+            MySQLiteOpenHelper users=new MySQLiteOpenHelper(Sea_deluser_Activity.this);
+            sqLiteDatabase=users.getReadableDatabase();
+            //获取从数据库查询到的数据
+            list=users.querydata(sqLiteDatabase);
+            Log.i("SQLite","list.size()="+list.size());
+        //把获取到的信息添加到用户名数组中
+        if (list != null && list.size() > 0) {
+            // 把获取到的信息添加到用户名数组中
+            user_mes = new String[list.size()];
+            for (int i = 0; i < list.size(); i++) {
+                user_mes[i] = list.get(i).getUsername() + "   " +
+                        list.get(i).getPassword() + "   " +
+                        list.get(i).getPhone() + "   " +
+                        list.get(i).getEmil();
+            }
+
+            // 把用户名显示在ListView上
+            final ArrayAdapter<String> adapter = new ArrayAdapter<String>(
+                    Sea_deluser_Activity.this, android.R.layout.simple_list_item_1, user_mes);
+
+            // 检查user_mes是否为空
+            if (user_mes != null && user_mes.length > 0) {
+                user_list.setAdapter(adapter);
+            } else {
+                // user_mes为空的情况处理
+                Toast.makeText(Sea_deluser_Activity.this, "没有数据可显示", Toast.LENGTH_SHORT).show();
+            }
+        } else {
+            // list为空的情况处理
+            Toast.makeText(Sea_deluser_Activity.this, "查询没有返回任何数据", Toast.LENGTH_SHORT).show();
+        }
+
+
+        //为listview每个元素添加点击事件
+        user_list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
+                final int id=list.get(i).getId();
+                //弹出一个对话框
+                new AlertDialog.Builder(Sea_deluser_Activity.this).setTitle("系统提示")
+                        //设置显示的内容
+                        .setMessage("确定删除该条数据吗！")
+                        //添加确定按钮
+                        .setPositiveButton("确定",new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                //删除数据操作，首先获取到id
+                                MySQLiteOpenHelper user_database=new MySQLiteOpenHelper(Sea_deluser_Activity.this);
+                                SQLiteDatabase sqLiteDatabase=user_database.getWritableDatabase();
+                                user_database.delete(sqLiteDatabase,id);
+                                refresh();
+                                Toast.makeText(Sea_deluser_Activity.this,"删除成功",Toast.LENGTH_SHORT).show();
+                            }
+                        }).setNegativeButton("取消",new DialogInterface.OnClickListener() {//添加返回按钮
+                            @Override
+                            public void onClick(DialogInterface dialog, int which) {
+
+                            }
+                        }).show();//在按键响应事件中显示此对话框
+            }
+        });
+    }
+    //刷新页面方法
+    private void refresh() {
+        finish();
+        Intent intent = new Intent(Sea_deluser_Activity.this, Sea_deluser_Activity.class);
+        startActivity(intent);
+    }
+}

My/app/src/main/java/com/example/my/Updareuser_Activity.java

@@ -0,0 +1,13 @@
+package com.example.my;
+
+import android.os.Bundle;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class Updareuser_Activity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+}

My/app/src/main/java/com/example/my/entity/DataService.java

@@ -0,0 +1,37 @@
+package com.example.my.entity;
+
+import com.example.my.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class DataService {
+
+    public static List<ProductInfo> getListData(int position) {
+        List<ProductInfo> list = new ArrayList<>();
+        if (position == 0) {
+            list.add(new ProductInfo(0, R.drawable.zz1, "张江碧云苑", "张江集团专浦东地区人员量身定制的服务型租赁社区，坐落于张江高科园南区毗邻中环线申江路段。国企房源，品质有保证", 8500));
+            list.add(new ProductInfo(0, R.drawable.zz2, "云湖壹号", "该项目小区规划得分高于90.6%本区同类型物业楼盘，社区内配备了访客系统、可视对讲系统、周界防范警报系统等等", 12000));
+            list.add(new ProductInfo(0, R.drawable.zz3, "新江湾城", "该户型拥有270°观景阳台，超明亮采光，小区生活、交通便捷，环境宜人，物业完备", 8233));
+        } else if (position == 1) {
+            list.add(new ProductInfo(0, R.drawable.zz2, "云湖壹号", "该项目小区规划得分高于90.6%本区同类型物业楼盘，社区内配备了访客系统、可视对讲系统、周界防范警报系统等等", 12000));
+            list.add(new ProductInfo(0, R.drawable.zz3, "新江湾城", "该户型拥有270°观景阳台，超明亮采光，小区生活、交通便捷，环境宜人，物业完备", 8233));
+        } else if (position == 2) {
+            list.add(new ProductInfo(0, R.drawable.zz1, "张江碧云苑", "张江集团专浦东地区人员量身定制的服务型租赁社区，坐落于张江高科园南区毗邻中环线申江路段。国企房源，品质有保证", 8500));
+            list.add(new ProductInfo(0, R.drawable.zz2, "云湖壹号", "该项目小区规划得分高于90.6%本区同类型物业楼盘，社区内配备了访客系统、可视对讲系统、周界防范警报系统等等", 12000));
+            list.add(new ProductInfo(0, R.drawable.zz3, "新江湾城", "该户型拥有270°观景阳台，超明亮采光，小区生活、交通便捷，环境宜人，物业完备", 8233));
+        } else if (position == 3) {
+            list.add(new ProductInfo(0, R.drawable.zz2, "云湖壹号", "该项目小区规划得分高于90.6%本区同类型物业楼盘，社区内配备了访客系统、可视对讲系统、周界防范警报系统等等", 12000));
+            list.add(new ProductInfo(0, R.drawable.zz3, "新江湾城", "该户型拥有270°观景阳台，超明亮采光，小区生活、交通便捷，环境宜人，物业完备", 8233));
+
+        } else if (position == 4) {
+            list.add(new ProductInfo(0, R.drawable.zz1, "张江碧云苑", "张江集团专浦东地区人员量身定制的服务型租赁社区，坐落于张江高科园南区毗邻中环线申江路段。国企房源，品质有保证", 8500));
+            list.add(new ProductInfo(0, R.drawable.zz2, "云湖壹号", "该项目小区规划得分高于90.6%本区同类型物业楼盘，社区内配备了访客系统、可视对讲系统、周界防范警报系统等等", 12000));
+            list.add(new ProductInfo(0, R.drawable.zz3, "新江湾城", "该户型拥有270°观景阳台，超明亮采光，小区生活、交通便捷，环境宜人，物业完备", 8233));
+        } else if (position == 5) {
+            list.add(new ProductInfo(0, R.drawable.zz1, "张江碧云苑", "张江集团专浦东地区人员量身定制的服务型租赁社区，坐落于张江高科园南区毗邻中环线申江路段。国企房源，品质有保证", 8500));
+            list.add(new ProductInfo(0, R.drawable.zz2, "云湖壹号", "该项目小区规划得分高于90.6%本区同类型物业楼盘，社区内配备了访客系统、可视对讲系统、周界防范警报系统等等", 12000));
+        }
+        return list;
+    }
+}

My/app/src/main/java/com/example/my/entity/ProductInfo.java

@@ -0,0 +1,57 @@
+package com.example.my.entity;
+
+public class ProductInfo {
+    private int id;
+    private int img;
+    private String title;
+    private String details;
+    private int price;
+
+    public ProductInfo(int id, int img, String title, String details, int price) {
+        this.id = id;
+        this.img = img;
+        this.title = title;
+        this.details = details;
+        this.price = price;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public int getImg() {
+        return img;
+    }
+
+    public void setImg(int img) {
+        this.img = img;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDetails() {
+        return details;
+    }
+
+    public void setDetails(String details) {
+        this.details = details;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void setPrice(int price) {
+        this.price = price;
+    }
+}

My/app/src/main/java/com/example/my/entity/User.java

@@ -0,0 +1,99 @@
+package com.example.my.entity;
+
+public class User {
+    public String username;
+    public String password;
+    public String phone;
+    public String email;
+
+    public String age;
+
+    public String sex;
+
+    public int id;
+
+    public User() {
+    }
+
+    public User(String username, String password, String phone, String emil) {
+        this.username = username;
+        this.password = password;
+        this.phone = phone;
+        this.email = emil;
+    }
+
+    public User(int id,String username, String password, String phone, String emil ) {
+        this.username = username;
+        this.password = password;
+        this.phone = phone;
+        this.email = emil;
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public String getEmil() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getAge() {
+        return age;
+    }
+
+    public void setAge(String age) {
+        this.age = age;
+    }
+
+    public String getSex() {
+        return sex;
+    }
+
+    public void setSex(String sex) {
+        this.sex = sex;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+                "username='" + username + '\'' +
+                ", password='" + password + '\'' +
+                ", phone='" + phone + '\'' +
+                ", emil='" + email + '\'' +
+                ", id=" + id +
+                '}';
+    }
+}

My/app/src/main/java/com/example/my/fragment/BlankFragment.java

@@ -0,0 +1,62 @@
+package com.example.my.fragment;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.Bundle;
+
+import android.view.View;
+import android.widget.Button;
+
+import com.example.my.MySQLiteOpenHelper;
+import com.example.my.R;
+import com.example.my.RegisterActivity;
+import com.example.my.Sea_deluser_Activity;
+import com.example.my.Updareuser_Activity;
+
+public class BlankFragment extends Activity implements View.OnClickListener{
+
+    public MySQLiteOpenHelper user;
+    public SQLiteDatabase sqL_read;
+    private Button search_del_btn, insert_btn, update_btn;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        MySQLiteOpenHelper user = new MySQLiteOpenHelper(this);
+        System.out.println("userDB=" + user);
+        /*只有调用getReadableDatabase()或者getWriteableDatabase()函数后才能返回一个SQLiteDatabase对象*/
+        SQLiteDatabase sqLiteDatabase = user.getReadableDatabase();
+        System.out.println("sqLiteDatabase=" + sqLiteDatabase);
+        init();
+    }
+
+    //组件初始化方法
+    public void init() {
+//        search_del_btn = findViewById(R.id.search_delete);
+//        insert_btn = findViewById(R.id.add);
+//        update_btn = findViewById(R.id.update);
+//        //添加监听
+//        search_del_btn.setOnClickListener(this);
+//        insert_btn.setOnClickListener(this);
+//        update_btn.setOnClickListener(this);
+    }
+
+    @Override
+    public void onClick(View view) {
+//        Intent intent;
+//        if (view.getId() == R.id.search_delete) {
+//            intent = new Intent(BlankFragment.this, Sea_deluser_Activity.class);
+//            startActivity(intent);
+//        } else if (view.getId() == R.id.add) {
+//            intent = new Intent(BlankFragment.this, RegisterActivity.class);
+//            startActivity(intent);
+//        } else if (view.getId() == R.id.update) {
+//            intent = new Intent(BlankFragment.this, Updareuser_Activity.class);
+//            startActivity(intent);
+//        } else {
+//            // 默认情况
+//        }
+    }
+}

My/app/src/main/java/com/example/my/fragment/ChatFragment.java

@@ -0,0 +1,23 @@
+package com.example.my.fragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.example.my.R;
+
+
+public class ChatFragment extends Fragment {
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_chat, container, false);
+    }
+}

My/app/src/main/java/com/example/my/fragment/HomeFragment.java

@@ -0,0 +1,78 @@
+package com.example.my.fragment;
+
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Toast;
+
+import com.example.my.Adapter.LeftListAdapter;
+import com.example.my.Adapter.RightListAdapter;
+import com.example.my.R;
+import com.example.my.entity.DataService;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class HomeFragment extends Fragment {
+
+    private View rootView;
+    private RecyclerView leftRecyclerView;
+    private LeftListAdapter mLeftListAdapter;
+
+    private List<String> left_date = new ArrayList<>();
+    private RecyclerView rightRecyclerView;
+
+    private RightListAdapter mRightListAdapter;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        // Inflate the layout for this fragment
+        rootView = inflater.inflate(R.layout.fragment_home, container, false);
+
+        //初始化控件
+        leftRecyclerView = rootView.findViewById(R.id.leftlist);
+        rightRecyclerView=rootView.findViewById(R.id.rightlist);
+        return rootView;
+    }
+
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        left_date.add("整租");
+        left_date.add("合租");
+        left_date.add("短租");
+        left_date.add("公寓");
+        left_date.add("新房");
+        left_date.add("二手房");
+
+        mLeftListAdapter = new LeftListAdapter(left_date);
+        leftRecyclerView.setAdapter(mLeftListAdapter);
+
+        mRightListAdapter=new RightListAdapter();
+        rightRecyclerView.setAdapter(mRightListAdapter);
+        //默认加载数据
+        mRightListAdapter.setListData(DataService.getListData(0));
+
+        //点击事件
+        mLeftListAdapter.setmLeftListOnClickItemListener(new LeftListAdapter.LeftListOnClickItemListener() {
+            @Override
+            public void onItemClick(int position) {
+                mLeftListAdapter.setCurrentIndex(position);
+                //点击左侧分类切换对应的列表数据
+                mRightListAdapter.setListData(DataService.getListData(position));
+
+            }
+        });
+    }
+}

My/app/src/main/java/com/example/my/fragment/RegFragment.java

@@ -0,0 +1,23 @@
+package com.example.my.fragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.example.my.R;
+
+
+public class RegFragment extends Fragment {
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_reg, container, false);
+    }
+}

My/app/src/main/java/com/example/my/fragment/SearchFragment.java

@@ -0,0 +1,75 @@
+package com.example.my.fragment;
+
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.example.my.Adapter.LeftListAdapter;
+import com.example.my.Adapter.RightListAdapter;
+import com.example.my.R;
+import com.example.my.entity.DataService;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SearchFragment extends Fragment {
+
+    private View rootView;
+    private RecyclerView leftRecyclerView;
+    private LeftListAdapter nLeftListAdapter;
+
+    private List<String> left_date1 = new ArrayList<>();
+    private RecyclerView rightRecyclerView;
+
+    private RightListAdapter nRightListAdapter;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        rootView = inflater.inflate(R.layout.fragment_search, container, false);
+
+
+        //初始化控件
+        leftRecyclerView = rootView.findViewById(R.id.leftlist);
+        rightRecyclerView = rootView.findViewById(R.id.rightlist);
+        return rootView;
+    }
+
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        left_date1.add("整租");
+        left_date1.add("合租");
+        left_date1.add("短租");
+        left_date1.add("公寓");
+        left_date1.add("新房");
+        left_date1.add("二手房");
+
+        nLeftListAdapter = new LeftListAdapter(left_date1);
+        leftRecyclerView.setAdapter(nLeftListAdapter);
+
+        nRightListAdapter = new RightListAdapter();
+        rightRecyclerView.setAdapter(nRightListAdapter);
+        //默认加载数据
+        nRightListAdapter.setListData(DataService.getListData(0));
+
+        //点击事件
+        nLeftListAdapter.setmLeftListOnClickItemListener(new LeftListAdapter.LeftListOnClickItemListener() {
+            @Override
+            public void onItemClick(int position) {
+                nLeftListAdapter.setCurrentIndex(position);
+                //点击左侧分类切换对应的列表数据
+                nRightListAdapter.setListData(DataService.getListData(position));
+
+            }
+        });
+    }
+}

My/app/src/main/res/drawable/darkgreen_button_background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="50dp" />
+            <solid android:color="@color/lightgreen"/>
+        </shape>
+    </item>
+</selector>

My/app/src/main/res/drawable/edit_shape.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="5dip"/>
+    <stroke
+        android:width="1dip"
+        android:color="#728ea3" />
+</shape>

My/app/src/main/res/drawable/edittext_background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <stroke android:color="@color/darkgreen" android:width="1dp"/>
+            <corners android:radius="100dp"/>
+        </shape>
+    </item>
+</selector>

My/app/src/main/res/drawable/edittext_background2.xml

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

My/app/src/main/res/drawable/grey_background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+<item>
+    <shape android:shape="rectangle">
+        <solid android:color="@color/grey"/>
+        <corners android:radius="10dp"/>
+    </shape>
+</item>
+</selector>

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

@@ -0,0 +1,170 @@
+<?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="#3DDC84"
+        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>

My/app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<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>

My/app/src/main/res/drawable/light_green_background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+<item>
+    <shape android:shape="rectangle">
+        <corners android:radius="50dp"/>
+        <solid android:color="#E5FDE3"/>
+    </shape>
+</item>
+</selector>

My/app/src/main/res/drawable/submit_button.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="50dp" />
+            <solid android:color="@color/darkgreen"/>
+        </shape>
+    </item>
+</selector>

My/app/src/main/res/drawable/type_select_bg.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item>
+        <shape>
+            <solid android:color="@color/white"/>
+
+
+        </shape>
+    </item>
+    <item android:top="10dp" android:bottom="10dp" android:right="96dp">
+        <shape>
+            <solid android:color="@color/darkgreen"/>
+
+
+        </shape>
+    </item>
+</layer-list>

My/app/src/main/res/drawable/type_selected_no.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape>
+            <solid android:color="@color/grey" />
+
+
+        </shape>
+    </item>
+
+</layer-list>

My/app/src/main/res/layout/activity_blank.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".BlankActivity">
+
+    <Button
+        android:id="@+id/search_delete"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:textSize="17sp"
+        android:textColor="#FFFFFF"
+        android:background="#4169E1"
+        android:text="查询/删除用户信息" />
+    <Button
+        android:id="@+id/update"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:textSize="17sp"
+        android:textColor="#FFFFFF"
+        android:background="#4169E1"
+        android:text="修改用户信息" />
+    <Button
+        android:id="@+id/add"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:textSize="17sp"
+        android:textColor="#FFFFFF"
+        android:background="#4169E1"
+        android:text="添加用户信息" />
+
+
+</LinearLayout>

My/app/src/main/res/layout/activity_login.xml

@@ -0,0 +1,193 @@
+<?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:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".LoginActivity">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/white">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <ImageView
+                android:id="@+id/imageView2"
+                android:layout_width="match_parent"
+                android:layout_height="314dp"
+                android:layout_weight="1"
+                android:scaleType="fitXY"
+                app:srcCompat="@drawable/login" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginTop="16dp"
+                android:gravity="center"
+                android:orientation="horizontal">
+
+
+                <TextView
+                    android:id="@+id/textView"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginEnd="8dp"
+                    android:text="House"
+                    android:textColor="@color/darkgreen"
+                    android:textSize="45sp"
+                    android:textStyle="bold" />
+
+                <TextView
+                    android:id="@+id/textView2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Explore"
+                    android:textColor="@color/brown"
+                    android:textSize="45sp" />
+
+            </LinearLayout>
+
+            <EditText
+                android:id="@+id/userEdit"
+                android:layout_width="match_parent"
+                android:layout_height="45dp"
+                android:layout_marginStart="32dp"
+                android:layout_marginTop="32dp"
+                android:layout_marginEnd="32dp"
+                android:background="@drawable/edittext_background"
+                android:ems="10"
+                android:hint="Email adress"
+                android:inputType="text"
+                android:textAlignment="center"
+                android:textSize="16sp" />
+
+            <EditText
+                android:id="@+id/passEdit"
+                android:layout_width="match_parent"
+                android:layout_height="45dp"
+                android:layout_marginStart="32dp"
+                android:layout_marginTop="16dp"
+                android:layout_marginEnd="32dp"
+                android:background="@drawable/edittext_background"
+                android:ems="10"
+                android:hint="Passworld"
+                android:inputType="textPassword"
+                android:textAlignment="center"
+                android:textSize="16sp" />
+
+            <TextView
+                android:id="@+id/textView3"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="32dp"
+                android:text="Forget Password?"
+                android:textAlignment="center"
+                android:textColor="@color/brown"
+                android:textSize="16sp" />
+
+            <TextView
+                android:id="@+id/login"
+                style="@android:style/Widget.Button"
+                android:layout_width="match_parent"
+                android:layout_height="45dp"
+                android:layout_margin="32dp"
+                android:background="@drawable/darkgreen_button_background"
+                android:text="Login"
+                android:textColor="@color/white"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginStart="32dp"
+                android:layout_marginEnd="32dp"
+                android:orientation="horizontal">
+
+                <View
+                    android:id="@+id/view"
+                    android:layout_width="wrap_content"
+                    android:layout_height="1dp"
+                    android:layout_gravity="center_vertical"
+                    android:layout_weight="1"
+                    android:background="#B2B5B9" />
+
+                <TextView
+                    android:id="@+id/textView4"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    android:text="OR"
+                    android:textSize="18sp" />
+
+                <View
+                    android:id="@+id/view2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="1dp"
+                    android:layout_gravity="center_vertical"
+                    android:layout_weight="1"
+                    android:background="#B2B5B9" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_margin="32dp"
+                android:orientation="horizontal">
+
+                <ImageView
+                    android:id="@+id/facebook"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    app:srcCompat="@drawable/facebook" />
+
+                <ImageView
+                    android:id="@+id/google"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    app:srcCompat="@drawable/google" />
+
+                <ImageView
+                    android:id="@+id/twitter"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    app:srcCompat="@drawable/twitter" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:gravity="center"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:id="@+id/sure"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Aren't a user? "
+                    android:textColor="@color/darkgreen"
+                    android:textSize="16sp" />
+
+                <TextView
+                    android:id="@+id/register"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Sign up"
+                    android:textColor="@color/brown"
+                    android:textSize="16sp" />
+            </LinearLayout>
+
+        </LinearLayout>
+    </ScrollView>
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".MainActivity">
+
+    <FrameLayout
+        android:id="@+id/content"
+        android:layout_above="@id/BottomNavigation"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/BottomNavigation"
+        android:layout_alignParentBottom="true"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:menu="@menu/navigation"/>
+</RelativeLayout>

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

@@ -0,0 +1,195 @@
+<?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:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".RegisterActivity">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintBottom_toBottomOf="parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+
+            <ImageView
+                android:id="@+id/imageView2"
+                android:layout_width="match_parent"
+                android:layout_height="344dp"
+                app:srcCompat="@drawable/register2" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginLeft="30dp"
+                android:layout_marginTop="16dp"
+                android:orientation="horizontal">
+
+
+                <TextView
+                    android:id="@+id/textView"
+                    android:layout_width="185dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginEnd="8dp"
+                    android:text="Sign-up"
+                    android:textColor="@color/darkgreen"
+                    android:textSize="45sp"
+                    android:textStyle="bold" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="400dp"
+                android:orientation="vertical">
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="95dp"
+                    android:orientation="horizontal">
+
+                    <TextView
+                        android:layout_width="85dp"
+                        android:layout_height="50dp"
+                        android:layout_marginStart="32dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:layout_weight="1"
+                        android:text="昵称"
+                        android:textColor="@color/brown"
+                        android:textSize="20sp"
+                        android:textStyle="bold" />
+
+                    <EditText
+                        android:id="@+id/nameEdit"
+                        android:layout_width="270dp"
+                        android:layout_height="55dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:background="@drawable/edittext_background"
+                        android:ems="10"
+                        android:gravity="center"
+                        android:hint="Name"
+                        android:inputType="text"
+                        android:textAlignment="center"
+                        android:textSize="16sp" />
+                </LinearLayout>
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="95dp"
+                    android:orientation="horizontal">
+
+                    <TextView
+                        android:layout_width="85dp"
+                        android:layout_height="50dp"
+                        android:layout_marginStart="32dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:layout_weight="1"
+                        android:text="电话"
+                        android:textColor="@color/brown"
+                        android:textSize="20sp"
+                        android:textStyle="bold" />
+
+                    <EditText
+                        android:id="@+id/pnumEdit"
+                        android:layout_width="270dp"
+                        android:layout_height="55dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:background="@drawable/edittext_background"
+                        android:ems="10"
+                        android:hint="Phone number"
+                        android:inputType="phone|number"
+                        android:textAlignment="center"
+                        android:textSize="16sp" />
+                </LinearLayout>
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="95dp"
+                    android:orientation="horizontal">
+
+                    <TextView
+                        android:layout_width="85dp"
+                        android:layout_height="50dp"
+                        android:layout_marginStart="32dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:layout_weight="1"
+                        android:text="邮箱"
+                        android:textColor="@color/brown"
+                        android:textSize="20sp"
+                        android:textStyle="bold" />
+
+                    <EditText
+                        android:id="@+id/userEdit"
+                        android:layout_width="270dp"
+                        android:layout_height="55dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:background="@drawable/edittext_background"
+                        android:ems="10"
+                        android:hint="Email adress"
+                        android:inputType="text"
+                        android:textAlignment="center"
+                        android:textSize="16sp" />
+                </LinearLayout>
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="95dp"
+                    android:orientation="horizontal">
+
+                    <TextView
+                        android:layout_width="85dp"
+                        android:layout_height="50dp"
+                        android:layout_marginStart="32dp"
+                        android:layout_marginTop="40dp"
+                        android:layout_marginEnd="32dp"
+                        android:layout_weight="1"
+                        android:text="密码"
+                        android:textColor="@color/brown"
+                        android:textSize="20sp"
+                        android:textStyle="bold" />
+
+                    <EditText
+                        android:id="@+id/passEdit"
+                        android:layout_width="270dp"
+                        android:layout_height="55dp"
+                        android:layout_marginTop="38dp"
+                        android:layout_marginEnd="32dp"
+                        android:background="@drawable/edittext_background"
+                        android:ems="10"
+                        android:hint="Passworld"
+                        android:inputType="textPassword"
+                        android:textAlignment="center"
+                        android:textSize="16sp" />
+                </LinearLayout>
+
+            </LinearLayout>
+
+
+            <androidx.appcompat.widget.AppCompatButton
+                android:id="@+id/submit"
+                style="@android:style/Widget.Button"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="32dp"
+                android:layout_marginTop="60dp"
+                android:layout_marginRight="32dp"
+                android:background="@drawable/submit_button"
+                android:text="Submit"
+                android:textColor="@color/white"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+
+        </LinearLayout>
+    </ScrollView>
+</androidx.constraintlayout.widget.ConstraintLayout>

My/app/src/main/res/layout/activity_search.xml

@@ -0,0 +1,129 @@
+<?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:layout_weight="1"
+    android:background="@drawable/grey_background">
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/white"
+        tools:layout_editor_absoluteX="16dp"
+        tools:layout_editor_absoluteY="16dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@color/white"
+            android:orientation="vertical">
+
+            <androidx.constraintlayout.widget.ConstraintLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginStart="16dp"
+                android:layout_marginTop="16dp"
+                android:layout_marginEnd="16dp">
+
+                <TextView
+                    android:id="@+id/textView5"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Welcome"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toTopOf="parent" />
+
+                <TextView
+                    android:id="@+id/textView6"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Alex Johnson"
+                    android:textStyle="bold"
+                    app:layout_constraintBottom_toBottomOf="parent"
+                    app:layout_constraintStart_toStartOf="@+id/textView5"
+                    app:layout_constraintTop_toBottomOf="@+id/textView5" />
+
+                <ImageView
+                    android:id="@+id/logouBtn"
+                    android:layout_width="30dp"
+                    android:layout_height="30dp"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    tools:srcCompat="@drawable/exit" />
+
+            </androidx.constraintlayout.widget.ConstraintLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_marginStart="16dp"
+                android:layout_marginTop="16dp"
+                android:layout_marginEnd="16dp"
+                android:orientation="horizontal">
+
+                <ImageView
+                    android:id="@+id/filterBtn"
+                    android:layout_width="wrap_content"
+                    android:layout_height="50dp"
+                    android:layout_marginEnd="6dp"
+                    android:background="@drawable/grey_background"
+                    android:padding="6dp"
+                    tools:srcCompat="@drawable/menu" />
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:layout_weight="1"
+                    android:background="@drawable/grey_background"
+                    android:orientation="horizontal">
+
+                    <EditText
+                        android:id="@+id/editTextText"
+                        android:layout_width="wrap_content"
+                        android:layout_height="match_parent"
+                        android:layout_margin="4dp"
+                        android:layout_weight="1"
+                        android:background="@drawable/grey_background"
+                        android:ems="10"
+                        android:hint="Search house"
+                        android:inputType="text"
+                        android:padding="8dp"
+                        android:textAlignment="center"
+                        android:textColor="@color/darkgreen"
+                        android:textColorHint="@color/darkgreen"
+                        android:textSize="16sp" />
+
+                    <ImageView
+                        android:id="@+id/searchBtn"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="center"
+                        android:padding="6dp"
+                        tools:srcCompat="@drawable/search" />
+                </LinearLayout>
+
+                <ImageView
+                    android:id="@+id/cartBtn"
+                    android:layout_width="wrap_content"
+                    android:layout_height="50dp"
+                    android:layout_marginStart="6dp"
+                    android:background="@drawable/grey_background"
+                    android:padding="6dp"
+                    tools:srcCompat="@drawable/add" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal">
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:orientation="horizontal"></LinearLayout>
+            </LinearLayout>
+        </LinearLayout>
+    </ScrollView>
+</androidx.constraintlayout.widget.ConstraintLayout>

My/app/src/main/res/layout/fragment_chat.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.appcompat.widget.LinearLayoutCompat 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=".fragment.HomeFragment">
+
+    <!-- TODO: Update blank fragment layout -->
+    <androidx.appcompat.widget.Toolbar
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/darkgreen"
+        app:title="交流"
+        app:titleTextColor="@color/white" />
+
+</androidx.appcompat.widget.LinearLayoutCompat>

My/app/src/main/res/layout/fragment_home.xml

@@ -0,0 +1,168 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.appcompat.widget.LinearLayoutCompat 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=".fragment.HomeFragment">
+
+
+    <androidx.appcompat.widget.Toolbar
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/darkgreen"
+        app:title="Home"
+        app:titleTextColor="@color/white" />
+
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/white"
+        android:orientation="vertical">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginEnd="16dp">
+
+            <TextView
+                android:id="@+id/textView5"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Welcome"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <TextView
+                android:id="@+id/textView6"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Alex Johnson"
+                android:textStyle="bold"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toStartOf="@+id/textView5"
+                app:layout_constraintTop_toBottomOf="@+id/textView5" />
+
+            <ImageView
+                android:id="@+id/logouBtn"
+                android:layout_width="30dp"
+                android:layout_height="30dp"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:srcCompat="@drawable/exit"
+                tools:ignore="MissingConstraints" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginEnd="16dp"
+            android:layout_marginBottom="10dp"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/filterBtn"
+                android:layout_width="wrap_content"
+                android:layout_height="50dp"
+                android:layout_marginEnd="6dp"
+                android:background="@drawable/grey_background"
+                android:padding="6dp"
+                app:srcCompat="@drawable/menu" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:background="@drawable/grey_background"
+                android:orientation="horizontal">
+
+                <EditText
+                    android:id="@+id/editTextText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="match_parent"
+                    android:layout_margin="4dp"
+                    android:layout_weight="1"
+                    android:background="@drawable/grey_background"
+                    android:ems="10"
+                    android:hint="Search house"
+                    android:inputType="text"
+                    android:padding="8dp"
+                    android:textAlignment="center"
+                    android:textColor="@color/darkgreen"
+                    android:textColorHint="@color/darkgreen"
+                    android:textSize="16sp" />
+
+                <ImageView
+                    android:id="@+id/searchBtn"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="center"
+                    android:padding="6dp"
+                    app:srcCompat="@drawable/search" />
+            </LinearLayout>
+
+            <ImageView
+                android:id="@+id/cartBtn"
+                android:layout_width="wrap_content"
+                android:layout_height="50dp"
+                android:layout_marginStart="6dp"
+                android:background="@drawable/grey_background"
+                android:padding="6dp"
+                tools:srcCompat="@drawable/add" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal"></LinearLayout>
+        </LinearLayout>
+    </LinearLayout>
+
+    <androidx.appcompat.widget.LinearLayoutCompat
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <androidx.appcompat.widget.LinearLayoutCompat
+            android:layout_width="100dp"
+            android:layout_height="match_parent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/leftlist"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:background="#D1C4C4"
+                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+                tools:listitem="@layout/left_list_item">
+
+            </androidx.recyclerview.widget.RecyclerView>
+        </androidx.appcompat.widget.LinearLayoutCompat>
+
+        <androidx.appcompat.widget.LinearLayoutCompat
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/rightlist"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+                tools:listitem="@layout/right_list_item">
+
+            </androidx.recyclerview.widget.RecyclerView>
+        </androidx.appcompat.widget.LinearLayoutCompat>
+    </androidx.appcompat.widget.LinearLayoutCompat>
+
+
+</androidx.appcompat.widget.LinearLayoutCompat>

My/app/src/main/res/layout/fragment_reg.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.appcompat.widget.LinearLayoutCompat 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=".fragment.HomeFragment">
+
+    <!-- TODO: Update blank fragment layout -->
+    <androidx.appcompat.widget.Toolbar
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/darkgreen"
+        app:title="个人"
+        app:titleTextColor="@color/white" />
+
+</androidx.appcompat.widget.LinearLayoutCompat>

My/app/src/main/res/layout/fragment_search.xml

@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.appcompat.widget.LinearLayoutCompat 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=".fragment.SearchFragment">
+
+    <!-- TODO: Update blank fragment layout -->
+    <androidx.appcompat.widget.Toolbar
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/darkgreen"
+        app:title="搜索"
+        app:titleTextColor="@color/white" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/white"
+        android:orientation="vertical">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginEnd="16dp"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/filterBtn"
+                android:layout_width="wrap_content"
+                android:layout_height="50dp"
+                android:layout_marginEnd="6dp"
+                android:background="@drawable/grey_background"
+                android:padding="6dp"
+                app:srcCompat="@drawable/menu" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:background="@drawable/grey_background"
+                android:orientation="horizontal">
+
+                <EditText
+                    android:id="@+id/editTextText"
+                    android:layout_width="48dp"
+                    android:layout_height="match_parent"
+                    android:layout_margin="4dp"
+                    android:layout_weight="1"
+                    android:background="@drawable/grey_background"
+                    android:ems="10"
+                    android:hint="Search house"
+                    android:inputType="text"
+                    android:padding="8dp"
+                    android:textAlignment="center"
+                    android:textColor="@color/darkgreen"
+                    android:textColorHint="@color/darkgreen"
+                    android:textSize="16sp" />
+
+                <ImageView
+                    android:id="@+id/searchBtn"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="center"
+                    android:padding="6dp"
+                    app:srcCompat="@drawable/search" />
+            </LinearLayout>
+
+            <ImageView
+                android:id="@+id/cartBtn"
+                android:layout_width="wrap_content"
+                android:layout_height="50dp"
+                android:layout_marginStart="6dp"
+                android:background="@drawable/grey_background"
+                android:padding="6dp"
+                app:srcCompat="@drawable/add" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="26dp"
+            android:orientation="horizontal">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal"></LinearLayout>
+        </LinearLayout>
+    </LinearLayout>
+
+    <androidx.appcompat.widget.LinearLayoutCompat
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <androidx.appcompat.widget.LinearLayoutCompat
+            android:layout_width="100dp"
+            android:layout_height="match_parent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/leftlist"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:background="#D1C4C4"
+                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+                tools:listitem="@layout/left_list_item">
+
+            </androidx.recyclerview.widget.RecyclerView>
+        </androidx.appcompat.widget.LinearLayoutCompat>
+
+        <androidx.appcompat.widget.LinearLayoutCompat
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/rightlist"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+                tools:listitem="@layout/right_list_item">
+
+            </androidx.recyclerview.widget.RecyclerView>
+        </androidx.appcompat.widget.LinearLayoutCompat>
+    </androidx.appcompat.widget.LinearLayoutCompat>
+
+
+</androidx.appcompat.widget.LinearLayoutCompat>

My/app/src/main/res/layout/left_list_item.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <TextView
+        android:id="@+id/name"
+        android:layout_width="100dp"
+        android:layout_height="50dp"
+        android:gravity="center_vertical"
+        android:text="5555"
+        android:paddingLeft="10dp"
+        tools:ignore="MissingConstraints" />
+</androidx.constraintlayout.widget.ConstraintLayout>

My/app/src/main/res/layout/nearby_view.xml

@@ -0,0 +1,131 @@
+<?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="wrap_content"
+    android:layout_margin="8dp"
+    android:background="@drawable/edittext_background2"
+    android:elevation="3dp">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/pro_img"
+        android:layout_width="130dp"
+        android:layout_height="85dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginBottom="8dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:shapeAppearanceOverlay="@style/ShapeAppearanceOverlay.App.circleImageView"
+        tools:scaleType="centerCrop"
+        tools:srcCompat="@drawable/login" />
+
+    <ImageView
+        android:id="@+id/imageView3"
+        android:layout_width="25dp"
+        android:layout_height="25dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        app:layout_constraintEnd_toStartOf="@+id/pro_detail"
+        app:layout_constraintTop_toTopOf="@+id/pro_img"
+        tools:srcCompat="@drawable/favorite" />
+
+    <TextView
+        android:id="@+id/pro_title"
+        android:layout_width="wrap_content"
+        android:layout_height="25dp"
+        android:layout_marginStart="8dp"
+        android:background="@drawable/light_green_background"
+        android:gravity="center"
+        android:paddingStart="8dp"
+        android:paddingEnd="8dp"
+        android:text="Aparment"
+        android:textColor="@color/darkgreen"
+        android:textSize="12sp"
+        android:textStyle="bold"
+        app:layout_constraintStart_toEndOf="@+id/pro_img"
+        app:layout_constraintTop_toTopOf="@+id/pro_img" />
+
+    <TextView
+        android:id="@+id/score"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:text="5"
+        android:textSize="12sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="@+id/imageView4"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/pro_title" />
+
+    <ImageView
+        android:id="@+id/imageView4"
+        android:layout_width="25dp"
+        android:layout_height="25dp"
+        android:layout_marginEnd="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/pro_title"
+        app:layout_constraintEnd_toStartOf="@+id/score"
+        app:layout_constraintTop_toTopOf="@+id/pro_title"
+        tools:srcCompat="@drawable/star" />
+
+    <TextView
+        android:id="@+id/pro_detail"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:text="title"
+        android:textColor="@color/darkgreen"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/pro_title"
+        app:layout_constraintTop_toBottomOf="@+id/pro_title" />
+
+    <ImageView
+        android:id="@+id/imageView5"
+        android:layout_width="22dp"
+        android:layout_height="22dp"
+        android:layout_marginTop="8dp"
+        app:layout_constraintStart_toStartOf="@+id/pro_detail"
+        app:layout_constraintTop_toBottomOf="@+id/pro_detail"
+        tools:srcCompat="@drawable/location" />
+
+    <TextView
+        android:id="@+id/address"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:text="address"
+        android:textSize="12sp"
+        app:layout_constraintBottom_toBottomOf="@+id/imageView5"
+        app:layout_constraintStart_toEndOf="@+id/imageView5"
+        app:layout_constraintTop_toTopOf="@+id/imageView5" />
+
+    <TextView
+        android:id="@+id/pro_price"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:text="￥0"
+        android:textColor="@color/darkgreen"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="@+id/textView10"
+        app:layout_constraintEnd_toStartOf="@+id/textView10"
+        app:layout_constraintTop_toTopOf="@+id/textView10" />
+
+    <TextView
+        android:id="@+id/textView10"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:text="/Month"
+        android:textSize="12sp"
+        app:layout_constraintBottom_toBottomOf="@+id/address"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/address"
+        app:layout_constraintVertical_bias="0.0" />
+</androidx.constraintlayout.widget.ConstraintLayout>

My/app/src/main/res/layout/recommended_viewholder.xml

@@ -0,0 +1,128 @@
+<?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="225dp"
+    android:layout_height="260dp"
+    android:layout_margin="8dp"
+    android:background="@drawable/edittext_background2"
+    android:elevation="3dp">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/pro_img"
+        android:layout_width="0dp"
+        android:layout_height="124dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        app:shapeAppearanceOverlay="@style/ShapeAppearanceOverlay.App.circleImageView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:scaleType="centerCrop"
+        tools:srcCompat="@drawable/login" />
+
+    <ImageView
+        android:id="@+id/imageView3"
+        android:layout_width="25dp"
+        android:layout_height="25dp"
+        android:layout_margin="16dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:srcCompat="@drawable/favorite" />
+
+    <TextView
+        android:id="@+id/pro_title"
+        android:layout_width="wrap_content"
+        android:layout_height="25dp"
+        android:layout_marginTop="8dp"
+        android:paddingStart="8dp"
+        android:paddingEnd="8dp"
+        android:background="@drawable/light_green_background"
+        android:gravity="center"
+        android:textColor="@color/darkgreen"
+        android:text="Aparment"
+        android:textStyle="bold"
+        android:textSize="12sp"
+        app:layout_constraintStart_toStartOf="@+id/pro_img"
+        app:layout_constraintTop_toBottomOf="@+id/pro_img" />
+
+    <TextView
+        android:id="@+id/score"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:text="5"
+        android:textSize="12sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="@+id/imageView4"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/pro_title" />
+
+    <ImageView
+        android:id="@+id/imageView4"
+        android:layout_width="25dp"
+        android:layout_height="25dp"
+        android:layout_marginEnd="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/pro_title"
+        app:layout_constraintEnd_toStartOf="@+id/score"
+        app:layout_constraintTop_toTopOf="@+id/pro_title"
+        tools:srcCompat="@drawable/star" />
+
+    <TextView
+        android:id="@+id/pro_detail"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:text="title"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        android:textColor="@color/darkgreen"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/pro_title"
+        app:layout_constraintTop_toBottomOf="@+id/pro_title" />
+
+    <ImageView
+        android:id="@+id/imageView5"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        app:layout_constraintStart_toStartOf="@+id/pro_detail"
+        app:layout_constraintTop_toBottomOf="@+id/pro_detail"
+        tools:srcCompat="@drawable/location" />
+
+    <TextView
+        android:id="@+id/address"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:text="address"
+        android:textSize="12sp"
+        app:layout_constraintBottom_toBottomOf="@+id/imageView5"
+        app:layout_constraintStart_toEndOf="@+id/imageView5"
+        app:layout_constraintTop_toTopOf="@+id/imageView5" />
+
+    <TextView
+        android:id="@+id/pro_price"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="￥1200"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        android:textColor="@color/darkgreen"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/imageView5"
+        app:layout_constraintTop_toBottomOf="@+id/imageView5" />
+
+    <TextView
+        android:id="@+id/textView10"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:text="/Month"
+        android:textSize="12sp"
+        app:layout_constraintBottom_toBottomOf="@+id/pro_price"
+        app:layout_constraintStart_toEndOf="@+id/pro_price"
+        app:layout_constraintTop_toTopOf="@+id/pro_price" />
+</androidx.constraintlayout.widget.ConstraintLayout>

My/app/src/main/res/layout/right_list_item.xml

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="412dp"
+    android:layout_height="wrap_content"
+    android:background="@drawable/edittext_background2"
+    android:orientation="horizontal">
+
+    <ImageView
+        android:id="@+id/pro_img"
+        android:layout_width="130dp"
+        android:layout_height="85dp"
+        android:layout_margin="8dp"
+        app:srcCompat="@drawable/login"
+        tools:scaleType="centerCrop" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/pro_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:singleLine="true"
+            android:text="Aparment"
+            android:textSize="12sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:id="@+id/pro_detail"
+            android:layout_width="match_parent"
+            android:layout_height="35dp"
+            android:layout_marginTop="5dp"
+            android:layout_marginBottom="5dp"
+            android:background="@drawable/light_green_background"
+            android:maxLines="2"
+            android:text="detail"
+            android:textColor="@color/darkgreen"
+            android:textSize="12sp" />
+
+        <TextView
+            android:id="@+id/pro_price"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="￥0"
+            android:textColor="@color/darkgreen"
+            android:textSize="16sp"
+            android:textStyle="bold" />
+
+
+    </LinearLayout>
+
+
+</LinearLayout>

My/app/src/main/res/layout/user_search_delete.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".Sea_deluser_Activity">
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:background="@color/lightgreen"
+        android:orientation="horizontal">
+        <ImageView
+            android:layout_width="50dp"
+            android:layout_height="50dp"
+            android:layout_marginLeft="10dp"
+            android:src="@drawable/pearson"/>
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="查询用户"
+            android:textSize="18sp"
+            android:gravity="center_vertical"
+            android:textColor="#FFFFFF"/>
+    </LinearLayout>
+
+    <ListView
+        android:id="@+id/mes"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:dividerHeight="2dp"></ListView>
+
+
+</LinearLayout>

My/app/src/main/res/menu/navigation.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:id="@+id/home"
+        android:icon="@drawable/home1"
+        android:title="首页"
+        />
+    <item android:id="@+id/chat"
+        android:icon="@drawable/chat"
+        android:title="交流"
+        />
+    <item android:id="@+id/search"
+        android:icon="@drawable/search"
+        android:title="搜索"
+        />
+    <item android:id="@+id/reg"
+        android:icon="@drawable/reg"
+        android:title="个人"
+        />
+    <item
+        android:id="@+id/home1"
+        android:icon="@drawable/more"
+        android:title="更多" />
+</menu>

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

@@ -0,0 +1,6 @@
+<?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" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

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

@@ -0,0 +1,6 @@
+<?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" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

My/app/src/main/res/values-night/themes.xml

@@ -0,0 +1,7 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Base.Theme.MyApplication" parent="Theme.Material3.DayNight.NoActionBar">
+        <!-- Customize your dark theme here. -->
+        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
+    </style>
+</resources>

My/app/src/main/res/values/colors.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="darkgreen">#3D5943</color>
+    <color name="lightgreen">#62762f</color>
+    <color name="brown">#BB8A52</color>
+    <color name="light_brown">#D7C3B8</color>
+    <color name="yellow">#FFBA00</color>
+    <color name="grey">#F5F5F5</color>
+
+</resources>
+
+

My/app/src/main/res/values/strings.xml

@@ -0,0 +1,7 @@
+<resources>
+    <string name="app_name">城市</string>
+    <string name="welcome">Welcome</string>
+    <string name="Alex">Alex Johnson</string>
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
+</resources>

My/app/src/main/res/values/themes.xml

@@ -0,0 +1,12 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!--  Base application theme.  -->
+    <style name="Base.Theme.MyApplication" parent="Theme.Material3.DayNight.NoActionBar">
+        <!--  Customize your light theme here.  -->
+          <item name="colorPrimary">@color/darkgreen</item>
+    </style>
+    <style name="Theme.MyApplication" parent="Base.Theme.MyApplication"/>
+    <style name="ShapeAppearanceOverlay.App.circleImageView" parent="">
+        <item name="cornerFamily">rounded</item>
+        <item name="cornerSize">10dp</item>
+    </style>
+</resources>

My/app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>