期末大作业

code/代码/.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

code/代码/.idea/.name

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+shopfour

code/代码/.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>

code/代码/.idea/deploymentTargetDropDown.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetDropDown">
+    <value>
+      <entry key="app">
+        <State />
+      </entry>
+    </value>
+  </component>
+</project>

code/代码/.idea/gradle.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <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>

code/代码/.idea/migrations.xml

@@ -0,0 +1,10 @@
+<?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>

code/代码/.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>

code/代码/app/.gitignore

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+/build

code/代码/app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'com.example.shopfour'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.example.shopfour"
+        minSdk 31
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        dataBinding{
+            enabled=true
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    buildFeatures {
+        viewBinding true
+    }
+
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.4.1'
+    implementation 'com.google.android.material:material:1.5.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+    implementation 'androidx.navigation:navigation-runtime:2.4.1'
+    implementation 'androidx.navigation:navigation-ui:2.4.1'
+    implementation 'androidx.navigation:navigation-fragment:2.4.1'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}

code/代码/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

code/代码/app/src/androidTest/java/com/example/shopfour/ExampleInstrumentedTest.java

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

code/代码/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">
+
+    <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.Shopfour"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
+        <service android:name=".MyService" />
+
+        <activity android:name=".RegisteredActivity"></activity>
+    </application>
+
+</manifest>

code/代码/app/src/main/java/com/example/shopfour/GoodsDialog.java

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+package com.example.shopfour;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+
+import com.example.shopfour.application.Goods;
+import com.example.shopfour.databinding.DialogGoodsBinding;
+
+public class GoodsDialog extends Dialog implements View.OnClickListener {
+
+    private Goods goods;
+    private Context context;
+    private DialogGoodsBinding binding;
+
+    public GoodsDialog(@NonNull Context context, Goods goods) {
+        super(context);
+        this.goods = goods;
+        this.context = context;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        binding = DialogGoodsBinding.inflate(LayoutInflater.from(context));
+        setContentView(binding.getRoot());
+
+//        binding.imageViewPreviewDialog
+        if (goods.getBitmaps().size() > 0){
+            binding.imageViewPreviewDialog.setImageBitmap(goods.getBitmaps().get(0));
+        }
+        binding.getRoot().setOnClickListener(this);
+
+
+        binding.textViewGoodsDescribeDialog.setText(goods.getDescribe());
+
+        binding.textViewGoodsNameDialog.setText(goods.getGoodsName());
+
+        binding.textViewGoodsTagsDialog.setText(goods.getTags().toString());
+
+        binding.textViewGoodsPriceDialog.setText(Goods.toPriceString(goods.getPrice()));
+
+    }
+
+    @Override
+    public void onClick(View view) {
+        hide();
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/MainActivity.java

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+package com.example.shopfour;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.FragmentManager;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.NavController;
+import androidx.navigation.Navigation;
+import androidx.navigation.ui.AppBarConfiguration;
+import androidx.navigation.ui.NavigationUI;
+
+import com.example.shopfour.application.Goods;
+import com.example.shopfour.application.Person;
+import com.example.shopfour.databinding.ActivityMainBinding;
+import com.example.shopfour.ui.goods.GoodsFragment;
+import com.example.shopfour.ui.person.PersonFragment;
+import com.example.shopfour.ui.person.PersonViewModel;
+import com.example.shopfour.ui.shopping.ShoppingFragment;
+
+import java.util.ArrayList;
+
+public class MainActivity extends AppCompatActivity {
+
+    private ActivityMainBinding binding;
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        ActionBar actionBar=getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.hide();
+        }
+
+        binding = ActivityMainBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        BottomNavigationView navView = findViewById(R.id.nav_view);
+        // Passing each menu ID as a set of Ids because each
+        // menu should be considered as top level destinations.
+        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
+                R.id.navigation_goods, R.id.navigation_shopping, R.id.navigation_person)
+                .build();
+        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_main);
+        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
+        NavigationUI.setupWithNavController(binding.navView, navController);
+        // 创建 Intent 对象，用于启动 Service
+//                Intent serviceIntent = new Intent(this, MyService.class);
+
+                // 启动 Service
+//                startService(serviceIntent);
+
+    }
+
+}

code/代码/app/src/main/java/com/example/shopfour/MyService.java

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+package com.example.shopfour;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.IBinder;
+
+public class MyService extends Service {
+    @Override
+    public IBinder onBind(Intent intent) {
+        // 实现此方法以提供绑定服务的实现
+        return null;
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        // 在此处执行服务工作
+        return START_STICKY;
+    }
+
+    @Override
+    public void onDestroy() {
+        // 在此处进行资源清理
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/RegisteredActivity.java

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+package com.example.shopfour;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Toast;
+
+import com.example.shopfour.application.Database;
+import com.example.shopfour.application.MySQLiteHelper;
+import com.example.shopfour.application.Person;
+import com.example.shopfour.databinding.ActivityMainBinding;
+import com.example.shopfour.databinding.RegisteredLayoutBinding;
+
+public class RegisteredActivity extends AppCompatActivity {
+    private RegisteredLayoutBinding registeredLayoutBinding;
+    public static int RESULTCODE_NEWPERSON = 1;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        registeredLayoutBinding = RegisteredLayoutBinding.inflate(getLayoutInflater());
+        setContentView(registeredLayoutBinding.getRoot());
+
+        registeredLayoutBinding.buttonCancelR.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                RegisteredActivity.this.finish();
+            }
+        });
+
+        registeredLayoutBinding.buttonRegistered.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String userName = registeredLayoutBinding.editTextUsernameR.getText().toString().trim();
+                String password = registeredLayoutBinding.editTextPasswordR.getText().toString().trim();
+                String password2 = registeredLayoutBinding.editTextPasswordR2.getText().toString().trim();
+
+                if (!password.equals(password2)){
+                    Toast.makeText(RegisteredActivity.this,"两次密码输入不一致!",Toast.LENGTH_SHORT).show();
+                    return;
+                }
+
+                Database database = new Database(new MySQLiteHelper(RegisteredActivity.this));
+                Person person = database.findPersonFromSQLite(null,userName,password);
+                if (person != null){
+                    Toast.makeText(RegisteredActivity.this,"该账号已经注册过了!",Toast.LENGTH_SHORT).show();
+                    return;
+                } else {
+                    userName = registeredLayoutBinding.editTextUsernameR.getText().toString().trim();
+                    password = registeredLayoutBinding.editTextPasswordR.getText().toString().trim();
+
+                    person = new Person(userName,password);
+                    person.setNum(database.getPersonMaxNumFromSQLite()+1);
+                    person.setId(String.valueOf(person.getNum()));
+                    person.setMoney(0);
+
+                    database.insertPersonToSQLite(person);
+                    Toast.makeText(RegisteredActivity.this,"注册成功!",Toast.LENGTH_SHORT).show();
+                    Intent intentRegisterSuccess = new Intent();
+                    intentRegisterSuccess.putExtra("newPerson",person);
+                    setResult(RESULTCODE_NEWPERSON,intentRegisterSuccess);
+                    finish();
+                }
+
+
+            }
+        });
+
+
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/application/BuyingListAdapter.java

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+package com.example.shopfour.application;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.example.shopfour.GoodsDialog;
+import com.example.shopfour.R;
+
+import java.util.ArrayList;
+
+public class BuyingListAdapter extends BaseAdapter {
+    private ArrayList<Goods> list_goods ;
+    private final Context context;
+
+    public BuyingListAdapter(ArrayList<Goods> list,Context context){
+        this.list_goods = list;
+        this.context = context;
+    }
+
+    public void setListGoods(ArrayList<Goods> list){
+        this.list_goods = list;
+    }
+
+    @Override
+    public int getCount() {
+        return list_goods.size();
+    }
+
+    @Override
+    public Object getItem(int i) {
+        return list_goods.get(i);
+    }
+
+    @Override
+    public long getItemId(int i) {
+        return i;
+    }
+
+    @SuppressLint("ViewHolder")
+    @Override
+    public View getView(int i, View view, ViewGroup viewGroup) {
+        @SuppressLint("ViewHolder") View item_view;
+        item_view = View.inflate(this.context, R.layout.list_item_buying,null);
+
+        ImageView imageViewPreviewBuying = item_view.findViewById(R.id.imageViewPreviewBuying);
+        TextView textViewGoodsNameBuying = item_view.findViewById(R.id.textViewGoodsNameBuying);
+        TextView textViewGoodsPriceBuying = item_view.findViewById(R.id.textViewGoodsPriceBuying);
+
+        item_view.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        String t="-"+Goods.toPriceString(list_goods.get(i).getPrice());
+        textViewGoodsPriceBuying.setText(t);
+
+        textViewGoodsNameBuying.setText(list_goods.get(i).getGoodsName());
+
+        if (list_goods.get(i).getBitmaps().size() > 0){
+            imageViewPreviewBuying.setImageBitmap(list_goods.get(i).getBitmaps().get(0));
+        }
+
+
+        return item_view;
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/application/Database.java

@@ -0,0 +1,185 @@
+package com.example.shopfour.application;
+
+import android.content.ContentValues;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.util.Log;
+
+import java.util.ArrayList;
+
+public class Database {
+    private MySQLiteHelper mySQLiteHelper;
+    private SQLiteDatabase database;
+
+    public Database(MySQLiteHelper mySQLiteHelper){
+        this.mySQLiteHelper = mySQLiteHelper;
+    }
+
+    public void insertPersonToSQLite(Person person){
+        database = mySQLiteHelper.getWritableDatabase();
+        ContentValues values = new ContentValues();
+        values.put("id",person.getId());
+        values.put("num",person.getNum());
+        values.put("username",person.getUsername());
+        values.put("password",person.getPassword());
+        values.put("money",person.getMoney());
+        long id = database.insert("person",null,values);
+        database.close();
+    }
+
+    public int getPersonMaxNumFromSQLite(){
+        database = mySQLiteHelper.getWritableDatabase();
+        int result;
+        Cursor cursor = database.rawQuery("SELECT MAX(num) FROM person",null);
+        if(cursor.getCount() ==0){
+            return 0;
+        } else {
+            cursor.moveToFirst();
+            result = cursor.getInt(0);
+        }
+        return result;
+    }
+
+    public int updatePersonToSQLite(Person person){
+        database = mySQLiteHelper.getWritableDatabase();
+        ContentValues values = new ContentValues();
+        values.put("num",person.getNum());
+        values.put("username",person.getUsername());
+        values.put("password",person.getPassword());
+        values.put("money",person.getMoney());
+        int number = database.update("person",values,"id=?",new String[]{person.getId()});
+        database.close();
+        return number;
+    }
+
+    public int deletePersonToSQLite(Person person){
+        database = mySQLiteHelper.getWritableDatabase();
+        int number = database.delete("person","id =?",new String[]{person.getId()});
+        database.close();
+        return number;
+    }
+
+    //此方法用来查询数据库中是否存在person
+
+    public Person findPersonFromSQLite(String id,String username,String password){
+        database = mySQLiteHelper.getReadableDatabase();
+        Person person = new Person(username,null);
+        Cursor cursor ;
+        if(id != null && (!id.isEmpty())){
+            cursor = database.query("person",null,"id=?",new String[]{id},null,null,null);
+            if (cursor.getCount() ==0){
+                database.close();
+                return null;
+            }
+            cursor.moveToFirst();
+            person.setId(cursor.getString(0));
+            person.setNum(cursor.getInt(1));
+            person.setUsername(cursor.getString(2));
+            person.setPassword(cursor.getString(3));
+            person.setMoney(cursor.getInt(4));
+            cursor.close();
+            database.close();
+            return person;
+
+        } else if(username != null && (!username.isEmpty())){
+            cursor = database.query("person",null,"username=?",new String[]{username},null,null,null);
+            if (cursor.getCount() ==0){
+                database.close();
+                return null;
+            } else if(cursor.getCount() ==1){
+                cursor.moveToFirst();
+                if (password != null){
+                    if (password.equals(cursor.getString(3))){
+                        person.setId(cursor.getString(0));
+                        person.setNum(cursor.getInt(1));
+                        person.setUsername(cursor.getString(2));
+                        person.setPassword(cursor.getString(3));
+                        person.setMoney(cursor.getInt(4));
+                    } else {    //如果密码不相等
+                        person = null;
+                    }
+                } else {
+                    person.setId(cursor.getString(0));
+                    person.setNum(cursor.getInt(1));
+                    person.setUsername(cursor.getString(2));
+                    person.setPassword(cursor.getString(3));
+                    person.setMoney(cursor.getInt(4));
+                }
+                cursor.close();
+                database.close();
+                return person;
+            } else {
+                cursor.moveToFirst();
+                if (cursor.getString(3).equals(password)){
+                    person.setId(cursor.getString(0));
+                    person.setNum(cursor.getInt(1));
+                    person.setUsername(cursor.getString(2));
+                    person.setPassword(cursor.getString(3));
+                    person.setMoney(cursor.getInt(4));
+                } else {
+                    boolean isExist = false;
+                    while(cursor.moveToNext()){
+                        if (cursor.getString(3).equals(password)){
+                            cursor.moveToFirst();
+                            person.setId(cursor.getString(0));
+                            person.setNum(cursor.getInt(1));
+                            person.setUsername(cursor.getString(2));
+                            person.setPassword(cursor.getString(3));
+                            person.setMoney(cursor.getInt(4));
+                            isExist = true;
+                            break;
+                        }
+                    }
+                    if(!isExist) {
+                        person = null;
+                    }
+                }
+                cursor.close();
+                database.close();
+                return person;
+            }
+
+        }else {
+            database.close();
+            return null;
+        }
+    }
+
+    public void insertGoodsToSQLite(Person person,Goods goods,long time){
+        database = mySQLiteHelper.getWritableDatabase();
+        ContentValues values = new ContentValues();
+        values.put("id",person.getId());
+        values.put("goodsName",goods.getGoodsName());
+        values.put("time",time);
+        long id = database.insert("shopping",null,values);
+        database.close();
+    }
+
+    public int deleteGoodsToSQLite(Person person,Goods goods){
+        database = mySQLiteHelper.getWritableDatabase();
+        int number = database.delete("shopping","id =? and goodsName =?",new String[]{person.getId(),goods.getGoodsName()});
+        database.close();
+        return number;
+    }
+
+    public ArrayList<String> findGoodsListFromSQLite(Person person){
+        database = mySQLiteHelper.getReadableDatabase();
+        ArrayList<String> list = new ArrayList<>();
+        Cursor cursor = database.query("shopping",null,"id=?",new String[]{person.getId()},null,null,null);
+        if (cursor.getCount() == 0){
+            cursor.close();
+            database.close();
+            return list;
+        } else {
+            cursor.moveToFirst();
+            list.add(new String(cursor.getString(1)));
+            while (cursor.moveToNext()){
+                list.add(new String(cursor.getString(1)));
+            }
+            cursor.close();
+            database.close();
+            return list;
+        }
+    }
+
+}

code/代码/app/src/main/java/com/example/shopfour/application/Goods.java

@@ -0,0 +1,142 @@
+package com.example.shopfour.application;
+
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+
+import com.example.shopfour.R;
+
+import java.io.InputStream;
+import java.lang.annotation.Retention;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class Goods {
+    private ArrayList<Bitmap> bitmaps;
+    private String goodsName;
+    private String describe;
+    private ArrayList<String> tags;
+    private int price;
+
+    public static ArrayList<Goods> GOODSLIST =new ArrayList<>();
+    public static Goods DEULT_GOODS = new Goods();
+
+    public Goods(){
+        this.bitmaps = new ArrayList<>();
+        this.goodsName = "";
+        this.describe = "";
+        this.tags = new ArrayList<>();
+        this.price = -1;
+    }
+
+    public Goods(String goodsName, String describe, String[] tags, int price){
+        this();
+        this.goodsName = goodsName;
+        this.describe = describe;
+        this.price = price;
+        this.tags.addAll(Arrays.asList(tags));
+    }
+
+    public ArrayList<Bitmap> getBitmaps() {
+        return bitmaps;
+    }
+
+    public void setBitmaps(ArrayList<Bitmap>  bitmaps) {
+        this.bitmaps = bitmaps;
+    }
+
+    public String getGoodsName() {
+        return goodsName;
+    }
+
+    public void setGoodsName(String goodsName) {
+        this.goodsName = goodsName;
+    }
+
+    public String getDescribe() {
+        return describe;
+    }
+
+    public void setDescribe(String describe) {
+        this.describe = describe;
+    }
+
+    public ArrayList<String> getTags() {
+        return tags;
+    }
+
+    public void setTags(ArrayList<String> tags) {
+        this.tags = tags;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void setPrice(int price) {
+        this.price = price;
+    }
+
+    public boolean equals(Goods goods){
+        return this.getGoodsName().equals(goods.getGoodsName())
+                && this.getTags().equals(goods.getTags())
+                && this.getDescribe().equals(goods.getDescribe())
+                && this.getPrice() == goods.getPrice();
+    }
+
+    public static String toPriceString(int price){
+        StringBuffer sb = new StringBuffer(String.valueOf(price));
+        //小于2位数
+        if (sb.length()<=2)
+        {
+            if (sb.length() == 0){
+                sb.insert(0,"0.00");
+            } else if(sb.length() == 1){
+                sb.insert(0,"0.0");
+            } else if(sb.length() == 2){
+                sb.insert(0,"0.");
+            }
+        } else {
+            sb.insert(sb.length()-2,'.');
+        }
+        return sb.toString();
+    }
+
+    public static void getDefaultGoodsList(Context context){
+
+        GOODSLIST.clear();
+        Goods goods1 = new Goods("蔚来汽车屏幕钢化膜","高清高透/专车专用/不粘指纹",new String[]{"汽车配件","钢化膜"},5000);
+        goods1.setDescribe("触摸灵敏，轻松滑屏，高精度玻璃切割技术，超薄，超顺，超灵敏");
+        Goods goods2 = new Goods("蔚来汽车钥匙扣","蔚来系列专用 适用ES8 ET7等车型",new String[]{"汽车配件","钥匙扣"},3500);
+        goods2.setDescribe("蔚来系列汽车钥匙专用 钥匙A适用于19-22款ES6 18-22款ES8 20-22款EC6，钥匙B适用于22款ET7 22款ES7 22款ETS");
+        Goods goods3 = new Goods("蔚来nomi草帽装饰","简约时尚/独特风格/贴合机身",new String[]{"汽车配件","nomi配饰"},1500);
+        goods3.setDescribe("带上帽子后萌趣感+1，简易安装，自己动手");
+        Goods goods4 = new Goods("蔚来枕头人体工学奢侈级","美潮标杆/舒享驾乘",new String[]{"汽车配件","枕头"},18000);
+        goods4.setDescribe("软糯支撑，横扫疲劳，既能护颈，也能纠正坐姿。重新定义汽车护颈枕功能属性。");
+
+        ArrayList<Bitmap> bitmaps1 = new ArrayList<>();
+        bitmaps1.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.mo_picture));
+        goods1.setBitmaps(bitmaps1);
+
+        ArrayList<Bitmap> bitmaps2 = new ArrayList<>();
+        bitmaps2.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.key_picture));
+        goods2.setBitmaps(bitmaps2);
+
+        ArrayList<Bitmap> bitmaps3 = new ArrayList<>();
+        bitmaps3.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.heat_picture));
+        goods3.setBitmaps(bitmaps3);
+
+        ArrayList<Bitmap> bitmaps4 = new ArrayList<>();
+        bitmaps4.add(BitmapFactory.decodeResource(context.getResources(), R.drawable.pillow_picture));
+        goods4.setBitmaps(bitmaps4);
+
+
+        GOODSLIST.add(goods1);
+        GOODSLIST.add(goods2);
+        GOODSLIST.add(goods3);
+        GOODSLIST.add(goods4);
+    }
+
+}

code/代码/app/src/main/java/com/example/shopfour/application/GoodsListAdapter.java

@@ -0,0 +1,150 @@
+package com.example.shopfour.application;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.os.Handler;
+import android.os.Message;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.example.shopfour.GoodsDialog;
+import com.example.shopfour.R;
+import com.example.shopfour.ui.person.PersonFragment;
+import com.example.shopfour.ui.shopping.ShoppingFragment;
+
+import java.util.ArrayList;
+import java.util.Timer;
+import java.util.TimerTask;
+
+public class GoodsListAdapter extends BaseAdapter{
+    private ArrayList<Goods> list_goods;
+    private final Context context;
+    private boolean delay = false;
+
+//    private final ListItemGoodsBinding listItemGoodsBinding;
+
+    public GoodsListAdapter(ArrayList<Goods> list, Context context){
+        this.list_goods = list;
+        this.context = context;
+//        listItemGoodsBinding =ListItemGoodsBinding.inflate(LayoutInflater.from(context));
+    }
+
+    public void setListGoods(ArrayList<Goods> list){
+        this.list_goods = list;
+    }
+
+    @Override
+    public int getCount() {
+        return list_goods.size();
+    }
+
+    @Override
+    public Object getItem(int i) {
+        return list_goods.get(i);
+    }
+
+    @Override
+    public long getItemId(int i) {
+        return i;
+    }
+
+    @SuppressLint("ViewHolder")
+    @Override
+    public View getView(int i, View view, ViewGroup viewGroup) {
+        @SuppressLint("ViewHolder") View item_view;
+        item_view = View.inflate(this.context, R.layout.list_item_goods,null);
+//        View item_view = listItemGoodsBinding.getRoot();
+
+        ImageView imageViewPreview = item_view.findViewById(R.id.imageViewPreview);
+        TextView textViewGoodsName = item_view.findViewById(R.id.textViewGoodsName);
+        TextView textViewGoodsTags = item_view.findViewById(R.id.textViewGoodsTags);
+        TextView textViewPrice = item_view.findViewById(R.id.textViewPrice);
+        ImageButton imageButtonAdd = item_view.findViewById(R.id.imageButtonAdd);
+
+        imageViewPreview.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        textViewGoodsName.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        textViewGoodsTags.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        textViewPrice.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(GoodsListAdapter.this.context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+
+
+        if (list_goods.get(i).getBitmaps().size() > 0){
+            imageViewPreview.setImageBitmap(list_goods.get(i).getBitmaps().get(0));
+        }
+        textViewGoodsName.setText(list_goods.get(i).getGoodsName());
+        textViewGoodsTags.setText(list_goods.get(i).getTags().toString());
+
+        textViewPrice.setText(Goods.toPriceString(list_goods.get(i).getPrice()));
+
+
+        imageButtonAdd.setOnClickListener(new View.OnClickListener() {
+            @SuppressLint("UseCompatLoadingForDrawables")
+            @Override
+            public void onClick(View view) {
+
+
+                if(!PersonFragment.ISLOGIN){
+                    Toast.makeText(context,"请先登录",Toast.LENGTH_SHORT).show();
+                }else{
+                    if (!delay){
+                        ShoppingFragment.shoppingList.add(Goods.GOODSLIST.get(i));
+                        Toast.makeText(context,"添加成功",Toast.LENGTH_SHORT).show();
+                        delay = true;
+                        imageButtonAdd.setImageResource(R.drawable.ok);
+
+                        @SuppressLint("HandlerLeak") Handler mHandler = new Handler() {
+                            @Override
+                            public void handleMessage(Message msg) {
+                                delay=false;
+                                imageButtonAdd.setImageResource(R.drawable.shopping_add);
+                            }
+                        };
+                        TimerTask task = new TimerTask(){
+                            public void run() {
+                                Message message = new Message();
+                                mHandler.sendMessage(message);
+                            }
+                        };
+                        Timer timer = new Timer();
+                        timer.schedule(task, 1000);
+
+                    }
+                }
+
+            }
+        });
+        return item_view;
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/application/MySQLiteHelper.java

@@ -0,0 +1,26 @@
+package com.example.shopfour.application;
+
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import androidx.annotation.Nullable;
+
+public class MySQLiteHelper extends SQLiteOpenHelper {
+    public MySQLiteHelper(@Nullable Context context) {
+        super(context,"shopfour.db", null, 1);
+    }
+
+
+    @Override
+    public void onCreate(SQLiteDatabase sqLiteDatabase) {
+        sqLiteDatabase.execSQL("create table person(id varchar(10) primary key,num integer,username varchar(30),password varchar(30),money integer)");
+        sqLiteDatabase.execSQL("create table shopping(id varchar(10),goodsName varchar(30),time bigint)");
+
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {
+
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/application/Person.java

@@ -0,0 +1,64 @@
+package com.example.shopfour.application;
+
+import java.io.Serializable;
+
+public class Person implements Serializable {
+    private String id;
+    private int num;
+    private String username;
+    private String password;
+    private int money =0 ;
+
+    public Person(String name, String password){
+        this.username = name;
+        this.password = password;
+    }
+
+    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 getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public void setNum(int num) {
+        this.num = num;
+    }
+
+    public int getNum() {
+        return num;
+    }
+
+    public int getMoney() {
+        return money;
+    }
+
+    public void setMoney(int money) {
+        this.money = money;
+    }
+
+    public String toString(){
+        String t;
+        t ="{id:%s,num:%s,username:%s,password:%s,money:%s}";
+        t =String.format(t,this.id,this.num,this.username,this.password,this.money);
+        return t;
+    }
+
+}

code/代码/app/src/main/java/com/example/shopfour/application/ShoppingListAdapter.java

@@ -0,0 +1,131 @@
+package com.example.shopfour.application;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.CheckBox;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.example.shopfour.GoodsDialog;
+import com.example.shopfour.R;
+import com.example.shopfour.databinding.FragmentShoppingBinding;
+import com.example.shopfour.databinding.ListItemGoodsBinding;
+import com.example.shopfour.databinding.ListItemShoppingBinding;
+
+import java.util.ArrayList;
+
+public class ShoppingListAdapter extends BaseAdapter {
+
+    private ArrayList<Goods> list_goods ;
+    private static ArrayList<Integer> list_select = new ArrayList<>();
+    private int allPrice = 0;
+    private final Context context;
+    private FragmentShoppingBinding binding;
+
+    public ShoppingListAdapter(ArrayList<Goods> list, Context context, FragmentShoppingBinding binding){
+        this.list_goods = list;
+        this.context = context;
+        this.binding = binding;
+    }
+
+    public void setListGoods(ArrayList<Goods> list){
+        this.list_goods = list;
+    }
+
+    public void setSelectList(ArrayList<Integer> list){
+        this.list_select = list;
+    }
+
+    public ArrayList<Integer> getSelectList(){
+        return this.list_select;
+    }
+
+    @Override
+    public int getCount() {
+        return list_goods.size();
+    }
+
+    @Override
+    public Object getItem(int i) {
+        return list_goods.get(i);
+    }
+
+    @Override
+    public long getItemId(int i) {
+        return i;
+    }
+
+    @SuppressLint("ViewHolder")
+    @Override
+    public View getView(int i, View view, ViewGroup viewGroup) {
+        @SuppressLint("ViewHolder") View item_view;
+        item_view = View.inflate(this.context, R.layout.list_item_shopping,null);
+
+        CheckBox checkBoxSelect = item_view.findViewById(R.id.checkBoxSelect);
+        ImageView imageViewPreviewShopping = item_view.findViewById(R.id.imageViewPreviewShopping);
+        TextView textViewGoodsNameShopping = item_view.findViewById(R.id.textViewGoodsNameShopping);
+        TextView textViewGoodsPriceShopping = item_view.findViewById(R.id.textViewGoodsPriceShopping);
+
+
+        if (list_select.contains(i)){
+            checkBoxSelect.setChecked(true);
+        }
+
+        checkBoxSelect.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                if (checkBoxSelect.isChecked()){
+                    list_select.add(i);
+                } else {
+                    list_select.remove(Integer.valueOf(i));
+                }
+
+                allPrice = 0;
+
+                for (int i=0;i<list_goods.size();i++){
+                    if (list_select.contains(i)){
+                        allPrice+=list_goods.get(i).getPrice();
+                    }
+                }
+
+                binding.shoppingBottom.textViewAllPrice.setText(Goods.toPriceString(allPrice));
+
+            }
+        });
+
+
+        if (list_goods.get(i).getBitmaps().size() > 0){
+            imageViewPreviewShopping.setImageBitmap(list_goods.get(i).getBitmaps().get(0));
+        }
+        imageViewPreviewShopping.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        textViewGoodsNameShopping.setText(list_goods.get(i).getGoodsName());
+        textViewGoodsNameShopping.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        textViewGoodsPriceShopping.setText(Goods.toPriceString(list_goods.get(i).getPrice()));
+        textViewGoodsPriceShopping.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                GoodsDialog dialog = new GoodsDialog(context,list_goods.get(i));
+                dialog.show();
+            }
+        });
+
+        return item_view;
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/ui/goods/GoodsFragment.java

@@ -0,0 +1,126 @@
+package com.example.shopfour.ui.goods;
+
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.Navigation;
+
+import com.example.shopfour.R;
+import com.example.shopfour.application.Goods;
+import com.example.shopfour.application.GoodsListAdapter;
+import com.example.shopfour.databinding.FragmentGoodsBinding;
+
+import java.util.ArrayList;
+
+
+public class GoodsFragment extends Fragment {
+
+    private GoodsViewModel goodsViewModel;
+    private FragmentGoodsBinding binding;
+    private ArrayList<Goods> list;
+    private ArrayList<Goods> resultList;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        goodsViewModel =
+                new ViewModelProvider(this).get(GoodsViewModel.class);
+
+        binding = FragmentGoodsBinding.inflate(inflater, container, false);
+        View root = binding.getRoot();
+
+        list = new ArrayList<>();
+        resultList = new ArrayList<>();
+
+        initListView();
+        initGoodsFragment();
+
+
+        return root;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+
+    private void initGoodsFragment(){
+        binding.topBar.imageButtonPhoto.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Navigation.findNavController(GoodsFragment.this.getView()).navigate(R.id.navigation_person);
+            }
+        });
+        binding.topBar.imageButtonShopping.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Navigation.findNavController(GoodsFragment.this.getView()).navigate(R.id.navigation_shopping);
+            }
+        });
+
+        binding.topBar.editTextSearch.addTextChangedListener(new TextWatcher() {
+
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
+
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                String search = s.toString().trim();
+                if(search.isEmpty()){
+                    goodsViewModel.setListGoods(list);
+                } else {
+                    resultList.clear();
+                    for (Goods t:list) {
+                        if(t.getGoodsName().contains(search)){
+                            resultList.add(t);
+                        } else if (t.getTags().toString().contains(search)){
+                            resultList.add(t);
+                        } else if (t.getDescribe().contains(search)){
+                            resultList.add(t);
+                        }
+                    }
+                    goodsViewModel.setListGoods(resultList);
+                }
+            }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+
+            }
+        });
+
+    }
+
+    private void initListView(){
+        if (Goods.GOODSLIST.size() == 0){
+            Goods.getDefaultGoodsList(getContext());
+        }
+        list = new ArrayList<>(Goods.GOODSLIST);
+
+        goodsViewModel.setListGoods(list);
+        GoodsListAdapter goodsListAdapter = new GoodsListAdapter(list,this.getContext());
+        binding.listViewGoods.setAdapter(goodsListAdapter);
+
+        goodsViewModel.getListGoods().observe(getViewLifecycleOwner(), new Observer<ArrayList<Goods>>() {
+            @Override
+            public void onChanged(ArrayList<Goods> list) {
+                goodsListAdapter.setListGoods(list);
+                binding.listViewGoods.setAdapter(goodsListAdapter);
+            }
+        });
+
+
+    }
+
+}

code/代码/app/src/main/java/com/example/shopfour/ui/goods/GoodsViewModel.java

@@ -0,0 +1,26 @@
+package com.example.shopfour.ui.goods;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import com.example.shopfour.application.Goods;
+
+import java.util.ArrayList;
+
+public class GoodsViewModel extends ViewModel {
+
+    private final MutableLiveData<ArrayList<Goods>> list_goods;
+
+    public GoodsViewModel() {
+        list_goods = new MutableLiveData<>();
+    }
+
+    public LiveData<ArrayList<Goods>> getListGoods() {
+        return list_goods;
+    }
+
+    public void setListGoods(ArrayList<Goods> list){
+        this.list_goods.setValue(list);
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/ui/person/PersonFragment.java

@@ -0,0 +1,268 @@
+package com.example.shopfour.ui.person;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.example.shopfour.RegisteredActivity;
+import com.example.shopfour.application.BuyingListAdapter;
+import com.example.shopfour.application.Database;
+import com.example.shopfour.application.Goods;
+import com.example.shopfour.application.MySQLiteHelper;
+import com.example.shopfour.application.Person;
+import com.example.shopfour.databinding.FragmentPersonBinding;
+
+import java.util.ArrayList;
+
+public class PersonFragment extends Fragment {
+
+    private PersonViewModel personViewModel;
+    private FragmentPersonBinding binding;
+    public static boolean  ISLOGIN = false;
+    public static int REQUESTCODE_NEWPERSON = 1;
+    public static Person person;
+    private ArrayList<Goods> goodsArrayList = new ArrayList<>();
+    private BuyingListAdapter buyingListAdapter;
+
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        personViewModel =
+                new ViewModelProvider(this).get(PersonViewModel.class);
+
+        binding = FragmentPersonBinding.inflate(inflater, container, false);
+        View root = binding.getRoot();
+
+        if (!ISLOGIN){
+            binding.linearLayoutLogin.setVisibility(View.VISIBLE);
+            binding.linearLayoutLoginSuccess.setVisibility(View.GONE);
+        } else
+        {
+            binding.linearLayoutLogin.setVisibility(View.GONE);
+            binding.linearLayoutLoginSuccess.setVisibility(View.VISIBLE);
+
+            goodsArrayList.clear();
+            Database database = new Database(new MySQLiteHelper(getContext()));
+            ArrayList<String> goodsNameList = database.findGoodsListFromSQLite(person);
+            for (String t:goodsNameList
+            ) {
+                for (Goods goods:Goods.GOODSLIST
+                ) {
+                    if (t.equals(goods.getGoodsName())){
+                        goodsArrayList.add(goods);
+                    }
+                }
+            }
+
+        }
+
+
+        personViewModel.getPerson().observe(getViewLifecycleOwner(), new Observer<Person>() {
+            @Override
+            public void onChanged(@Nullable Person person) {
+                if (person != null){
+                    PersonFragment.person = person;
+
+                    binding.includeLogin.editTextUsername.setText(person.getUsername());
+                    binding.includeLogin.editTextPassword.setText(person.getPassword());
+
+                    binding.includeLoginSuccess.textViewPersonName.setText(person.getUsername());
+
+                    //购物清单也要跟着变
+                    Database database = new Database(new MySQLiteHelper(getContext()));
+                    ArrayList<String> goodsNameList = database.findGoodsListFromSQLite(person);
+                    ArrayList<Goods> goodsArrayList = new ArrayList<>();
+                    for (String t:goodsNameList
+                    ) {
+                        for (Goods goods:Goods.GOODSLIST
+                        ) {
+                            if (t.equals(goods.getGoodsName())){
+                                goodsArrayList.add(goods);
+                            }
+                        }
+                    }
+                    personViewModel.setBuyingList(goodsArrayList);
+                }
+            }
+        });
+
+        personViewModel.setBuyingList(goodsArrayList);
+        buyingListAdapter = new BuyingListAdapter(goodsArrayList,getContext());
+        binding.includeLoginSuccess.buyingListView.setAdapter(buyingListAdapter);
+
+        personViewModel.getBuyingList().observe(getViewLifecycleOwner(), new Observer<ArrayList<Goods>>(){
+            @Override
+            public void onChanged(ArrayList<Goods> list) {
+                buyingListAdapter.setListGoods(list);
+                binding.includeLoginSuccess.buyingListView.setAdapter(buyingListAdapter);
+            }
+        });
+
+
+        initLayoutLogin();
+        initLayoutLoginSuccess();
+        return root;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+//        String result = (personViewModel.getPerson().getValue() == null)?"null":personViewModel.getPerson().getValue().toString();
+//        Log.i("TAG", "onDestroyView: "+result);
+    }
+
+
+    public void initLayoutLogin(){
+        if (personViewModel.getPerson().getValue() != null){
+            binding.includeLogin.editTextUsername.setText(personViewModel.getPerson().getValue().getUsername());
+        }
+
+        binding.includeLogin.buttonRegistered.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intentStartRegistered = new Intent(getActivity(), RegisteredActivity.class);
+                startActivityForResult(intentStartRegistered,REQUESTCODE_NEWPERSON);
+            }
+        });
+        binding.includeLogin.buttonLogin.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String userName = binding.includeLogin.editTextUsername.getText().toString().trim();
+                String password = binding.includeLogin.editTextPassword.getText().toString().trim();
+
+                if (userName.isEmpty()){
+                    Toast.makeText(getContext(), "请输入用户名", Toast.LENGTH_SHORT).show();
+                    return;
+                }
+
+                if (password.isEmpty()){
+                    Toast.makeText(getContext(), "请输入密码", Toast.LENGTH_SHORT).show();
+                    return;
+                }
+
+                Database database = new Database(new MySQLiteHelper(getContext()));
+                Person person = database.findPersonFromSQLite(null,userName,password);
+                if (person == null){
+                    Toast.makeText(getContext(), "用户名或密码错误，请核对后重新输入", Toast.LENGTH_SHORT).show();
+                    return;
+                } else {
+                    personViewModel.setPerson(person);
+                    binding.includeLoginSuccess.textViewPersonName.setText(personViewModel.getPerson().getValue().getUsername());
+                    StringBuffer sb = new StringBuffer(String.valueOf(personViewModel.getPerson().getValue().getMoney()));
+                    //小于2位数
+                    if (sb.length()<=2)
+                    {
+                        if (sb.length() == 0){
+                            sb.insert(0,"0.00");
+                        } else if(sb.length() == 1){
+                            sb.insert(0,"0.0");
+                        } else if(sb.length() == 2){
+                            sb.insert(0,"0.");
+                        }
+                    } else {
+                        sb.insert(sb.length()-2,'.');
+                    }
+                    binding.includeLoginSuccess.textViewPersonMoney.setText(sb.toString());
+                    ISLOGIN = true;
+                    binding.linearLayoutLogin.setVisibility(View.GONE);
+                    binding.linearLayoutLoginSuccess.setVisibility(View.VISIBLE);
+
+                    goodsArrayList.clear();
+                    ArrayList<String> goodsNameList = database.findGoodsListFromSQLite(person);
+                    for (String t:goodsNameList
+                    ) {
+                        for (Goods goods:Goods.GOODSLIST
+                        ) {
+                            if (t.equals(goods.getGoodsName())){
+                                goodsArrayList.add(goods);
+                            }
+                        }
+                    }
+                    personViewModel.setBuyingList(goodsArrayList);
+                    Log.i("TAG", "onClick: "+person.toString());
+                }
+            }
+        });
+
+
+    }
+
+    public void initLayoutLoginSuccess(){
+        if (personViewModel.getPerson().getValue() != null){
+            binding.includeLoginSuccess.textViewPersonName.setText(personViewModel.getPerson().getValue().getUsername());
+
+            StringBuffer sb = new StringBuffer(String.valueOf(personViewModel.getPerson().getValue().getMoney()));
+            //小于2位数
+            if (sb.length()<=2)
+            {
+                if (sb.length() == 0){
+                    sb.insert(0,"0.00");
+                } else if(sb.length() == 1){
+                    sb.insert(0,"0.0");
+                } else if(sb.length() == 2){
+                    sb.insert(0,"0.");
+                }
+            } else {
+                sb.insert(sb.length()-2,'.');
+            }
+            binding.includeLoginSuccess.textViewPersonMoney.setText(sb.toString());
+        }
+
+        binding.includeLoginSuccess.buttonEsc.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                binding.linearLayoutLoginSuccess.setVisibility(View.GONE);
+                binding.linearLayoutLogin.setVisibility(View.VISIBLE);
+
+                if (personViewModel.getPerson().getValue()!= null){
+                    binding.includeLogin.editTextUsername.setText(personViewModel.getPerson().getValue().getUsername());
+                    binding.includeLogin.editTextPassword.setText(personViewModel.getPerson().getValue().getPassword());
+                }
+
+                ISLOGIN = false;
+
+            }
+        });
+
+        binding.includeLoginSuccess.buttonCharge.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Toast.makeText(getContext(),"充值成功",Toast.LENGTH_SHORT).show();
+                Person person = personViewModel.getPerson().getValue();
+                person.setMoney(person.getMoney()+10000);
+                Database database = new Database(new MySQLiteHelper(getContext()));
+                database.updatePersonToSQLite(person);
+                personViewModel.setPerson(person);
+
+                binding.includeLoginSuccess.textViewPersonMoney.setText(Goods.toPriceString(personViewModel.getPerson().getValue().getMoney()));
+            }
+        });
+
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode == PersonFragment.REQUESTCODE_NEWPERSON){
+            if (resultCode == RegisteredActivity.RESULTCODE_NEWPERSON){
+                Person person =(Person) data.getSerializableExtra("newPerson");
+//                Navigation.findNavController(MainActivity.this.binding.getRoot()).navigate(R.id.navigation_person);
+                personViewModel = new ViewModelProvider(this).get(PersonViewModel.class);
+                personViewModel.setPerson(person);
+//                Log.i("MainActivity", "onActivityResult: "+personViewModel.getPerson().toString());
+            }
+        }
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/ui/person/PersonViewModel.java

@@ -0,0 +1,42 @@
+package com.example.shopfour.ui.person;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import com.example.shopfour.application.Database;
+import com.example.shopfour.application.Goods;
+import com.example.shopfour.application.Person;
+
+import java.util.ArrayList;
+
+public class PersonViewModel extends ViewModel {
+
+    private MutableLiveData<Person> personMutableLiveData;
+    private MutableLiveData<ArrayList<Goods>> buyingListMutableLiveData;
+
+    public PersonViewModel() {
+        personMutableLiveData = new MutableLiveData<>();
+        buyingListMutableLiveData = new MutableLiveData<>();
+        buyingListMutableLiveData.setValue(new ArrayList<>());
+        personMutableLiveData.setValue(PersonFragment.person);    //从MainActivity中恢复数据
+    }
+
+    public void setPerson(Person person){
+        personMutableLiveData.setValue(person);
+        PersonFragment.person = person;   //防止Fragment销毁的时候数据也被清空
+
+    }
+
+    public LiveData<Person> getPerson() {
+        return personMutableLiveData;
+    }
+
+    public void setBuyingList(ArrayList<Goods> list){
+        buyingListMutableLiveData.setValue(list);
+    }
+
+    public LiveData<ArrayList<Goods>> getBuyingList() {
+        return buyingListMutableLiveData;
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/ui/shopping/ShoppingFragment.java

@@ -0,0 +1,211 @@
+package com.example.shopfour.ui.shopping;
+
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.example.shopfour.R;
+import com.example.shopfour.application.Database;
+import com.example.shopfour.application.Goods;
+import com.example.shopfour.application.MySQLiteHelper;
+import com.example.shopfour.application.Person;
+import com.example.shopfour.application.ShoppingListAdapter;
+import com.example.shopfour.databinding.FragmentShoppingBinding;
+import com.example.shopfour.ui.person.PersonFragment;
+import com.example.shopfour.ui.person.PersonViewModel;
+
+import java.util.ArrayList;
+
+public class ShoppingFragment extends Fragment {
+
+    private ShoppingViewModel shoppingViewModel;
+    private FragmentShoppingBinding binding;
+    private PersonViewModel personViewModel;
+    private ShoppingListAdapter shoppingListAdapter;
+    public static ArrayList<Goods> shoppingList = new ArrayList<>();
+
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        shoppingViewModel =
+                new ViewModelProvider(this).get(ShoppingViewModel.class);
+
+        personViewModel = new ViewModelProvider(this).get(PersonViewModel.class);
+
+        binding = FragmentShoppingBinding.inflate(inflater, container, false);
+        View root = binding.getRoot();
+
+        initShoppingList();
+
+        return root;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+    private void initShoppingList(){
+        shoppingViewModel.setShoppingList(shoppingList);
+        shoppingListAdapter = new ShoppingListAdapter(shoppingList,getContext(),binding);
+        binding.listViewShopping.setAdapter(shoppingListAdapter);
+        if (PersonFragment.ISLOGIN){
+
+            shoppingViewModel.getShoppingList().observe(getViewLifecycleOwner(), new Observer<ArrayList<Goods>>() {
+                @Override
+                public void onChanged(@Nullable ArrayList<Goods> list) {
+                    ShoppingFragment.shoppingList = list;
+                    shoppingListAdapter.setListGoods(list);
+                    binding.listViewShopping.setAdapter(shoppingListAdapter);
+                }
+            });
+
+
+            binding.shoppingBottom.buttonDelete.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+
+                    //从购物列表中删除选中的项目
+                    deleteListWithIndex(shoppingViewModel.getShoppingList().getValue(),shoppingListAdapter.getSelectList());
+                    shoppingListAdapter.getSelectList().clear();
+                    shoppingViewModel.setShoppingList(shoppingViewModel.getShoppingList().getValue());
+
+                    binding.shoppingBottom.textViewAllPrice.setText("0.00");
+                    Toast.makeText(ShoppingFragment.this.getContext(),"删除成功",Toast.LENGTH_SHORT).show();
+                }
+
+            });
+
+            binding.shoppingBottom.checkBoxAll.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    if (binding.shoppingBottom.checkBoxAll.isChecked()){
+                        shoppingListAdapter.getSelectList().clear();
+
+                        for(int i=0;i<shoppingViewModel.getShoppingList().getValue().size();i++){
+                            shoppingListAdapter.getSelectList().add(i);
+                        }
+                    } else {
+                        shoppingListAdapter.getSelectList().clear();
+                    }
+
+                    int allPrice = 0;
+                    for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
+                        if (shoppingListAdapter.getSelectList().contains(i)){
+                            allPrice+=shoppingViewModel.getShoppingList().getValue().get(i).getPrice();
+                        }
+                    }
+
+                    binding.shoppingBottom.textViewAllPrice.setText(Goods.toPriceString(allPrice));
+                    binding.listViewShopping.setAdapter(shoppingListAdapter);
+                }
+            });
+
+            binding.shoppingBottom.buttonBuy.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    Person person =  personViewModel.getPerson().getValue();
+                    int allPrice =  0;
+
+                    for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
+                        if (shoppingListAdapter.getSelectList().contains(i)){
+                            allPrice+=shoppingViewModel.getShoppingList().getValue().get(i).getPrice();
+                        }
+                    }
+
+                    int finalAllPrice = allPrice;
+                    DialogInterface.OnClickListener buyOkListener =  new DialogInterface.OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialogInterface, int index) {
+                            if (person.getMoney() < finalAllPrice){
+                                Toast.makeText(getContext(),"余额不足，购买失败",Toast.LENGTH_SHORT).show();
+                            } else {
+
+                                Database database = new Database(new MySQLiteHelper(getContext()));
+                                person.setMoney(person.getMoney() - finalAllPrice);
+                                database.updatePersonToSQLite(person);
+                                personViewModel.setPerson(person);
+
+                                for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
+                                    if (shoppingListAdapter.getSelectList().contains(i)){
+                                        database.insertGoodsToSQLite(PersonFragment.person,shoppingViewModel.getShoppingList().getValue().get(i),System.currentTimeMillis());
+                                        personViewModel.getBuyingList().getValue().add(shoppingViewModel.getShoppingList().getValue().get(i));
+                                    }
+                                }
+
+                                personViewModel.setBuyingList(personViewModel.getBuyingList().getValue());
+
+                                //从购物列表中删除选中的项目
+                                deleteListWithIndex(shoppingViewModel.getShoppingList().getValue(),shoppingListAdapter.getSelectList());
+                                shoppingListAdapter.getSelectList().clear();
+                                binding.shoppingBottom.textViewAllPrice.setText("0.00");
+                                shoppingViewModel.setShoppingList(shoppingViewModel.getShoppingList().getValue());
+
+                                Toast.makeText(ShoppingFragment.this.getContext(),"购买成功",Toast.LENGTH_SHORT).show();
+
+                            }
+                        }
+                    };
+
+                    DialogInterface.OnClickListener buyCancelListener =  new DialogInterface.OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialogInterface, int i) {
+                            Toast.makeText(getContext(),"取消购买",Toast.LENGTH_SHORT).show();
+                        }
+                    };
+
+                    String infoMeg = "储值卡余额 %s 元\n消费共 %s 元\n确认购买？";
+                    infoMeg = String.format(infoMeg,Goods.toPriceString(person.getMoney()),Goods.toPriceString(allPrice));
+                    AlertDialog dialogInfo;
+                    dialogInfo = new AlertDialog.Builder(getContext()).setTitle("确认付款")
+                            .setMessage(infoMeg)
+                            .setIcon(R.drawable.question)
+                            .setPositiveButton("确定",buyOkListener)
+                            .setNegativeButton("取消",buyCancelListener)
+                            .create();
+                    dialogInfo.show();
+
+                }
+            });
+
+            int allPrice = 0;
+            for (int i=0;i<shoppingViewModel.getShoppingList().getValue().size();++i){
+                if (shoppingListAdapter.getSelectList().contains(i)){
+                    allPrice += shoppingViewModel.getShoppingList().getValue().get(i).getPrice();
+                }
+            }
+            binding.shoppingBottom.textViewAllPrice.setText(Goods.toPriceString(allPrice));
+        }
+    }
+
+    private void deleteListWithIndex(ArrayList<Goods> list,ArrayList<Integer> indexList){
+        for (int i=0;i<list.size();i++) {
+            if (indexList.contains(i)) {
+                list.set(i, Goods.DEULT_GOODS);
+            }
+        }
+
+        for (int i=0;i<indexList.size();i++){
+            for (int j=0;j<list.size();j++){
+                if (list.get(j).equals(Goods.DEULT_GOODS)){
+                    list.remove(j);
+                    break;
+                }
+            }
+        }
+
+    }
+}

code/代码/app/src/main/java/com/example/shopfour/ui/shopping/ShoppingViewModel.java

@@ -0,0 +1,27 @@
+package com.example.shopfour.ui.shopping;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import com.example.shopfour.application.Goods;
+
+import java.util.ArrayList;
+
+public class ShoppingViewModel extends ViewModel {
+
+    private MutableLiveData<ArrayList<Goods>> shoppingList;
+
+    public ShoppingViewModel() {
+        shoppingList = new MutableLiveData<>();
+    }
+
+    public void setShoppingList(ArrayList<Goods> list){
+        this.shoppingList.setValue(list);
+        ShoppingFragment.shoppingList = list;
+    }
+
+    public LiveData<ArrayList<Goods>> getShoppingList() {
+        return shoppingList;
+    }
+}

code/代码/app/src/main/res/drawable-v24/bottom_navigation_item_selector.xml

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

code/代码/app/src/main/res/drawable-v24/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>

code/代码/app/src/main/res/drawable-v24/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>

code/代码/app/src/main/res/drawable-v24/sharp_edit.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="10dp" />
+    <stroke android:color="#000000" android:width="2dp" />
+</shape>

code/代码/app/src/main/res/drawable-v24/text_view_tags.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--底层使用蓝色填充色-->
+    <item>
+        <shape>
+            <solid android:color="#FFFFFF"/>
+        </shape>
+    </item>
+
+    <!--上面一层距离底层的顶部1dp,距离底部1dp,类似marginTop,填充色为白色，这样就形成了一个带有蓝色顶部边线和底部边线的白色背景的图-->
+    <item android:bottom="3dp" android:top="3dp">
+        <shape>
+            <solid android:color="#FFFFFFFF"/>
+        </shape>
+    </item>
+</layer-list>

code/代码/app/src/main/res/drawable/bg_button_transparent.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+    <solid android:color="#00000000" />
+
+    <stroke
+        android:width="2dp"
+        android:color="@color/white" />
+
+    <corners android:radius="16dp" />
+
+</shape>

code/代码/app/src/main/res/layout/activity_home.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:gravity="center">
+
+    <Button
+        android:id="@+id/btn_iphone"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="16dp"
+        android:layout_marginRight="16dp"
+        android:text="iPhone"
+        android:textColor="#000000"
+        android:background="@drawable/bg_button_transparent"/>
+
+        <Button
+            android:id="@+id/btn_nio"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:layout_marginLeft="16dp"
+            android:layout_marginRight="16dp"
+            android:text="NIO"
+            android:textColor="#000000"
+            android:background="@drawable/bg_button_transparent"/>
+
+        <Button
+            android:id="@+id/btn_food"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:layout_marginLeft="16dp"
+            android:layout_marginRight="16dp"
+            android:text="Food"
+            android:textColor="#000000"
+            android:background="@drawable/bg_button_transparent"/>
+
+    </LinearLayout>
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>

code/代码/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,36 @@
+<?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/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/nav_view"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="0dp"
+        android:layout_marginEnd="0dp"
+        android:background="?android:attr/windowBackground"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:menu="@menu/bottom_nav_menu"
+        app:itemIconTint="@drawable/bottom_navigation_item_selector"
+        app:itemTextColor="@drawable/bottom_navigation_item_selector" />
+
+    <fragment
+        android:id="@+id/nav_host_fragment_activity_main"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginBottom="55dp"
+        app:defaultNavHost="true"
+        app:layout_constraintBottom_toTopOf="@id/nav_view"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:navGraph="@navigation/mobile_navigation" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

code/代码/app/src/main/res/layout/dialog_goods.xml

@@ -0,0 +1,60 @@
+<?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"
+    android:layout_width="wrap_content"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <ImageView
+        android:id="@+id/imageViewPreviewDialog"
+        android:layout_width="300dp"
+        android:layout_height="300dp"
+        android:layout_gravity="center"
+        android:layout_margin="5dp"
+        app:srcCompat="@drawable/default_goods"
+        android:scaleType="centerInside"/>
+
+    <TextView
+        android:id="@+id/textViewGoodsNameDialog"
+        android:layout_width="wrap_content"
+        android:layout_height="50dp"
+        android:textStyle="bold"
+        android:layout_gravity="center_vertical"
+        android:textSize="20sp"
+        android:layout_margin="5dp"
+        android:gravity="center"
+        android:text="钢化膜" />
+
+    <TextView
+        android:id="@+id/textViewGoodsTagsDialog"
+        android:layout_width="wrap_content"
+        android:layout_height="20dp"
+        android:layout_gravity="center"
+        android:layout_margin="5dp"
+        android:textColor="#B0C4DE"
+        android:textSize="10sp"
+        android:gravity="center"
+        android:text="TextView" />
+
+    <TextView
+        android:id="@+id/textViewGoodsDescribeDialog"
+        android:layout_width="match_parent"
+        android:layout_height="30dp"
+        android:layout_weight="1"
+        android:layout_margin="5dp"
+        android:textSize="10sp"
+        android:textColor="#708090"
+        android:gravity="center_vertical"
+        android:text="TextView" />
+
+    <TextView
+        android:id="@+id/textViewGoodsPriceDialog"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:layout_weight="2"
+        android:layout_margin="5dp"
+        android:gravity="center"
+        android:textSize="20sp"
+        android:textColor="@color/black"
+        android:text="TextView" />
+</LinearLayout>

code/代码/app/src/main/res/layout/fragment_goods.xml

@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.goods.GoodsFragment"
+    android:id="@+id/fragment_goods"
+    android:orientation="vertical">
+
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="45dp"
+        android:orientation="vertical" >
+        <include
+        android:id="@+id/top_bar"
+        layout="@layout/top_bar"/>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="130dp"
+        android:orientation="vertical" >
+        <ImageView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:background="@drawable/advertising">
+
+        </ImageView>
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="0.3"
+        android:orientation="vertical">
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="0.1"
+            android:layout_marginStart="10dp"
+            android:gravity="center_vertical"
+            android:textSize="15sp"
+            android:textColor="@color/black"
+            android:textStyle="bold"
+            android:text="Apple官方旗舰店 >" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="0.1"
+            android:layout_marginStart="10dp"
+            android:gravity="center_vertical"
+
+            android:textSize="15sp"
+            android:textColor="@color/black"
+            android:textStyle="bold"
+            android:text="steelo的小吃店 >" />
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="0.1"
+            android:layout_marginStart="10dp"
+            android:gravity="center_vertical"
+            android:textSize="18sp"
+            android:text="蔚来汽车用品店:"
+            android:textColor="@color/black"
+            android:textStyle="bold"
+            />
+    </LinearLayout>
+
+    <ListView
+        android:id="@+id/listViewGoods"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:divider="#00000000"
+        android:dividerHeight="5dp"
+        android:transcriptMode="alwaysScroll"
+
+        />
+
+</LinearLayout>

code/代码/app/src/main/res/layout/fragment_person.xml

@@ -0,0 +1,32 @@
+<?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:id="@+id/fragment_person"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.shopping.ShoppingFragment" >
+
+    <LinearLayout
+        android:id="@+id/linearLayoutLogin"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="horizontal"
+        android:visibility="visible">
+        <include
+            android:id="@+id/includeLogin"
+            layout="@layout/login_layout" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/linearLayoutLoginSuccess"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="horizontal"
+        android:visibility="invisible" >
+        <include
+            android:id="@+id/includeLoginSuccess"
+            layout="@layout/login_success_layout" />
+    </LinearLayout>
+
+</LinearLayout>

code/代码/app/src/main/res/layout/fragment_shopping.xml

@@ -0,0 +1,29 @@
+<?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:id="@+id/fragment_shopping"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".ui.person.PersonFragment">
+
+
+    <ListView
+        android:id="@+id/listViewShopping"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_margin="10dp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:layout_margin="5dp"
+        android:orientation="vertical" >
+
+        <include
+            android:id="@+id/shoppingBottom"
+            layout="@layout/shopping_bottom"/>
+    </LinearLayout>
+</LinearLayout>

code/代码/app/src/main/res/layout/list_item_buying.xml

@@ -0,0 +1,38 @@
+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ImageView
+        android:id="@+id/imageViewPreviewBuying"
+        android:layout_width="0dp"
+        android:layout_height="100dp"
+        android:layout_weight="2"
+        app:srcCompat="@drawable/default_goods"
+        android:background="@color/white"
+        android:scaleType="centerInside"/>
+
+    <TextView
+        android:id="@+id/textViewGoodsNameBuying"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="10"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:layout_marginStart="5dp"
+        android:textStyle="bold"
+        android:text="TextView" />
+
+    <TextView
+        android:id="@+id/textViewGoodsPriceBuying"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="5"
+        android:layout_marginStart="5dp"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:textStyle="bold"
+        android:textColor="@color/purple_700"
+        android:text="TextView" />
+</LinearLayout>

code/代码/app/src/main/res/layout/list_item_goods.xml

@@ -0,0 +1,81 @@
+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="horizontal">
+
+    <ImageView
+        android:id="@+id/imageViewPreview"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        app:srcCompat="@drawable/default_goods"
+        android:background="@color/white"
+        android:adjustViewBounds="true"
+        android:scaleType="centerInside"/>
+
+    <LinearLayout
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="3"
+        android:orientation="vertical">
+
+
+        <TextView
+            android:id="@+id/textViewGoodsName"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="3"
+            android:layout_margin="5dp"
+            android:textSize="20sp"
+            android:gravity="center_vertical"
+            android:text="蔚来屏幕钢化膜"
+            android:textStyle="bold"
+             />
+
+        <TextView
+            android:id="@+id/textViewGoodsTags"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="2"
+            android:layout_margin="5dp"
+            android:padding="5dp"
+            android:gravity="center_vertical"
+            android:background="@drawable/text_view_tags"
+            android:textSize="10sp"
+            android:text="钢化膜 水凝膜 钥匙套 方向盘套" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="3"
+            android:orientation="horizontal">
+
+
+            <TextView
+                android:id="@+id/textViewPrice"
+                android:layout_width="0dp"
+                android:layout_height="40dp"
+                android:layout_margin="10dp"
+                android:layout_weight="3"
+                android:gravity="center_vertical"
+                android:textSize="20sp"
+                android:textColor="@color/purple_700"
+                android:text="100.00" />
+
+            <ImageButton
+                android:id="@+id/imageButtonAdd"
+                android:layout_width="0dp"
+                android:layout_height="40dp"
+                android:layout_weight="1"
+                app:srcCompat="@drawable/tianjia1"
+                android:background="@color/white"
+                android:layout_gravity="top"
+                android:scaleType="fitEnd"/>
+        </LinearLayout>
+
+    </LinearLayout>
+
+
+</LinearLayout>

code/代码/app/src/main/res/layout/list_item_shopping.xml

@@ -0,0 +1,47 @@
+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <CheckBox
+        android:id="@+id/checkBoxSelect"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:layout_marginTop="5dp"
+        android:layout_marginBottom="5dp"
+        android:layout_gravity="center"
+        />
+
+    <ImageView
+        android:id="@+id/imageViewPreviewShopping"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:layout_weight="2"
+        app:srcCompat="@drawable/default_goods"
+        android:background="@color/white"
+        android:scaleType="centerInside"/>
+
+    <TextView
+        android:id="@+id/textViewGoodsNameShopping"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:layout_weight="10"
+        android:layout_marginStart="5dp"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:textStyle="bold"/>
+
+    <TextView
+        android:id="@+id/textViewGoodsPriceShopping"
+        android:layout_width="0dp"
+        android:layout_height="50dp"
+        android:layout_weight="3"
+        android:layout_marginStart="5dp"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:textStyle="bold"
+        android:textColor="@color/purple_700"/>
+
+</LinearLayout>

code/代码/app/src/main/res/layout/login_layout.xml

@@ -0,0 +1,84 @@
+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <ImageView
+        android:id="@+id/imageViewPersonPhoto"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="150dp"
+        app:srcCompat="@drawable/login" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/textViewUsername"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_margin="20dp"
+            android:gravity="center"
+            android:ems="5"
+            android:text="用户名：" />
+
+        <EditText
+            android:id="@+id/editTextUsername"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:hint="请输入用户名"
+            android:inputType="textPersonName" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/textViewPassword"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_margin="20dp"
+            android:ems="5"
+            android:gravity="center"
+            android:text="密码：" />
+
+        <EditText
+            android:id="@+id/editTextPassword"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:hint="请输入密码"
+            android:inputType="textWebPassword"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/buttonRegistered"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:layout_marginEnd="20dp"
+            android:layout_marginStart="20dp"
+            android:text="注册" />
+
+        <Button
+            android:id="@+id/buttonLogin"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:layout_marginStart="20dp"
+            android:layout_marginEnd="20dp"
+            android:text="登录" />
+    </LinearLayout>
+</LinearLayout>

code/代码/app/src/main/res/layout/login_success_layout.xml

@@ -0,0 +1,137 @@
+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="2"
+        android:orientation="horizontal">
+
+        <ImageView
+            android:id="@+id/imageViewPersonPhoto"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            app:srcCompat="@drawable/steelo" />
+
+        <TextView
+            android:id="@+id/textViewPersonName"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="4"
+            android:layout_marginStart="5dp"
+            android:textSize="20sp"
+            android:textStyle="bold"
+            android:gravity="center_vertical"
+            android:text="default" />
+
+        <TextView
+            android:id="@+id/textViewPersonMoney"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="3"
+            android:layout_marginStart="5dp"
+            android:textSize="15sp"
+            android:gravity="center_vertical"
+            android:textColor="@color/black" />
+
+        <Button
+            android:id="@+id/buttonCharge"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="2"
+            android:layout_gravity="center"
+            android:layout_margin="5dp"
+            android:text="余额" />
+
+        <Button
+            android:id="@+id/buttonEsc"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="5dp"
+            android:layout_gravity="center"
+            android:layout_weight="2"
+            android:text="退出" />
+    </LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="2"
+        android:orientation="horizontal">
+
+        <ImageView
+            android:id="@+id/information"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            app:srcCompat="@drawable/imformation" />
+
+
+
+
+    </LinearLayout>
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginStart="10dp"
+        android:gravity="center_vertical"
+        android:textSize="20sp"
+        android:textColor="@color/black"
+        android:textStyle="bold"
+        android:text="我的地址" />
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginStart="10dp"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:text="可乐" />
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginStart="10dp"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:text="浙江省" />
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginStart="10dp"
+        android:gravity="center_vertical"
+        android:textSize="20sp"
+        android:textColor="@color/black"
+        android:textStyle="bold"
+        android:text="快递方式" />
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginStart="10dp"
+        android:gravity="center_vertical"
+        android:textSize="15sp"
+        android:text="顺丰快递" />
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:layout_marginStart="10dp"
+        android:gravity="center_vertical"
+        android:textSize="20sp"
+        android:textColor="@color/black"
+        android:textStyle="bold"
+        android:text="我的订单" />
+    <ListView
+        android:id="@+id/buyingListView"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="10"/>
+</LinearLayout>

code/代码/app/src/main/res/layout/registered_layout.xml

@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="5dp"
+        android:gravity="center_vertical"
+        android:textSize="25sp"
+        android:layout_marginTop="150dp"
+        android:text="注册新用户" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/textViewUsernameR"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_margin="20dp"
+            android:gravity="center"
+            android:ems="5"
+            android:text="用户名：" />
+
+        <EditText
+            android:id="@+id/editTextUsernameR"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:hint="请输入用户名"
+            android:inputType="textPersonName" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/textViewPasswordR"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_margin="20dp"
+            android:ems="5"
+            android:gravity="center"
+            android:text="密码：" />
+
+        <EditText
+            android:id="@+id/editTextPasswordR"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:hint="请输入密码"
+            android:inputType="textWebPassword"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/textViewPasswordR2"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_margin="20dp"
+            android:ems="5"
+            android:gravity="center"
+            android:text="确认密码：" />
+
+        <EditText
+            android:id="@+id/editTextPasswordR2"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:hint="请再次确认密码"
+            android:inputType="textWebPassword"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/buttonCancelR"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:layout_marginEnd="20dp"
+            android:layout_marginStart="20dp"
+            android:textColor="@color/white"
+            android:text="取消" />
+
+        <Button
+            android:id="@+id/buttonRegistered"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:layout_marginStart="20dp"
+            android:layout_marginEnd="20dp"
+            android:text="注册" />
+    </LinearLayout>
+
+</LinearLayout>

code/代码/app/src/main/res/layout/shopping_bottom.xml

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center_vertical">
+
+    <CheckBox
+        android:id="@+id/checkBoxAll"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:layout_marginTop="5dp"
+        android:layout_marginBottom="5dp"
+        android:textSize="10sp"
+        android:textStyle="bold"
+        android:text="全选" />
+
+    <TextView
+        android:id="@+id/textViewAllPrice"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:textColor="@color/white"
+        android:gravity="center"
+        android:text="0.00" />
+
+    <Button
+        android:id="@+id/buttonDelete"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:layout_marginTop="5dp"
+        android:layout_marginBottom="5dp"
+        android:layout_marginStart="15dp"
+        android:layout_marginEnd="15dp"
+        android:textColor="@color/white"
+        android:textSize="10sp"
+        android:text="删除" />
+
+    <Button
+        android:id="@+id/buttonBuy"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:layout_marginTop="5dp"
+        android:layout_marginBottom="5dp"
+        android:layout_marginStart="15dp"
+        android:layout_marginEnd="15dp"
+        android:textSize="10sp"
+        android:text="去支付" />
+</LinearLayout>

code/代码/app/src/main/res/layout/top_bar.xml

@@ -0,0 +1,46 @@
+<?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"
+    android:layout_width="match_parent"
+    android:layout_height="45dp">
+
+    <ImageButton
+        android:id="@+id/imageButtonPhoto"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        android:layout_margin="5dp"
+        app:srcCompat="@drawable/steelo"
+        android:background="@color/white"
+        android:scaleType="fitStart" />
+
+    <EditText
+        android:id="@+id/editTextSearch"
+        android:gravity="center_vertical"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="4"
+        android:layout_gravity="center_vertical"
+        android:layout_marginTop="5dp"
+        android:layout_marginBottom="5dp"
+        android:layout_marginEnd="20dp"
+        android:layout_marginStart="20dp"
+        android:paddingStart="10dp"
+        android:background="@drawable/sharp_edit"
+        android:hint="搜一搜看吧"
+        android:inputType="textPersonName"
+        android:text="" />
+
+    <ImageButton
+        android:id="@+id/imageButtonShopping"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        android:gravity="end"
+        android:layout_margin="5dp"
+        app:srcCompat="@drawable/shoppingcart"
+        android:background="@color/white"
+        android:scaleType="fitEnd" />
+
+
+</LinearLayout>

code/代码/app/src/main/res/menu/bottom_nav_menu.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/navigation_goods"
+        android:icon="@drawable/goods"
+        android:title="@string/title_goods" />
+
+    <item
+        android:id="@+id/navigation_shopping"
+        android:icon="@drawable/shopping"
+        android:title="@string/title_shopping" />
+
+    <item
+        android:id="@+id/navigation_person"
+        android:icon="@drawable/person"
+        android:title="@string/title_person" />
+
+</menu>

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

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

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

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

code/代码/app/src/main/res/navigation/mobile_navigation.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation 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/mobile_navigation"
+    app:startDestination="@+id/navigation_goods">
+
+    <fragment
+        android:id="@+id/navigation_goods"
+        android:name="com.example.shopfour.ui.goods.GoodsFragment"
+        android:label="@string/title_goods"
+        tools:layout="@layout/fragment_goods" />
+
+    <fragment
+        android:id="@+id/navigation_shopping"
+        android:name="com.example.shopfour.ui.shopping.ShoppingFragment"
+        android:label="@string/title_shopping"
+        tools:layout="@layout/fragment_shopping" />
+
+    <fragment
+        android:id="@+id/navigation_person"
+        android:name="com.example.shopfour.ui.person.PersonFragment"
+        android:label="@string/title_person"
+        tools:layout="@layout/fragment_person" />
+</navigation>

code/代码/app/src/main/res/values-night/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Shopfour" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

code/代码/app/src/main/res/values/colors.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="selector_color">#FFBB86FC</color>
+    <color name="title_color">#FFBB86FC</color>
+    <color name="color_focused">#4169E1</color>
+    <color name="color_un_focused">#000000</color>
+    <color name="red">#FFFF0000</color>
+</resources>

code/代码/app/src/main/res/values/dimens.xml

@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>

code/代码/app/src/main/res/values/strings.xml

@@ -0,0 +1,8 @@
+<resources>
+    <string name="app_name">shopfour</string>
+
+    <string name="title_goods">商品</string>
+    <string name="title_shopping">购物车</string>
+    <string name="title_person">个人中心</string>
+    <string name="searchHint">请输入商品名称</string>
+</resources>

code/代码/app/src/main/res/values/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Shopfour" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

code/代码/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>

code/代码/app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

code/代码/app/src/test/java/com/example/shopfour/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.example.shopfour;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}

code/代码/build.gradle

@@ -0,0 +1,9 @@
+buildscript {
+    ext {
+        agp_version = '8.2.2'
+    }
+}// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    id 'com.android.application' version '8.2.2' apply false
+    id 'com.android.library' version '7.3.0' apply false
+}

code/代码/gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true