上传期末项目

Final_Project_app/.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

Final_Project_app/.idea/.gitignore

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

Final_Project_app/.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>

Final_Project_app/.idea/encodings.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" defaultCharsetForPropertiesFiles="UTF-8">
+    <file url="PROJECT" charset="UTF-8" />
+  </component>
+</project>

Final_Project_app/.idea/gradle.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="jbr-17" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

Final_Project_app/.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+  </profile>
+</component>

Final_Project_app/.idea/misc.xml

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+<project version="4">
+  <component name="CodeInsightWorkspaceSettings">
+    <option name="optimizeImportsOnTheFly" value="true" />
+  </component>
+  <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>

Final_Project_app/app/.gitignore

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+/build

Final_Project_app/app/build.gradle.kts

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+plugins {
+    id("com.android.application")
+}
+
+android {
+    namespace = "com.example.final_project_app"
+    compileSdk = 33
+
+    defaultConfig {
+        applicationId = "com.example.final_project_app"
+        minSdk = 24
+        targetSdk = 33
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    //noinspection GradleCompatible,GradleCompatible
+    implementation("androidx.appcompat:appcompat:1.6.1")
+    implementation("com.google.android.material:material:1.8.0")
+    implementation("androidx.constraintlayout:constraintlayout:2.1.4")
+    testImplementation("junit:junit:4.13.2")
+    androidTestImplementation("androidx.test.ext:junit:1.1.5")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+    implementation(files("libs\\mysql-connector-java-5.1.49.jar"))
+//轮播图依赖，使用三方开源库youth5201314
+    implementation("io.github.youth5201314:banner:2.2.2")
+//视频播放器依赖
+    implementation("com.android.support:recyclerview-v7:33.0.0")
+    //implementation("com.github.bumptech.glide:glide:4.8.0")
+
+
+}

Final_Project_app/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

Final_Project_app/app/src/androidTest/java/com/example/final_project_app/ExampleInstrumentedTest.java

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

Final_Project_app/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">
+    <!-- 添加网络权限 -->
+    <uses-permission android:name="android.permission.INTERNET" /> <!-- 读取权限 -->
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission
+        android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"
+        tools:ignore="ProtectedPermissions" />
+
+    <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.Final_Project_app"
+        tools:targetApi="31">
+        <activity
+            android:name=".QuestionActivity"
+            android:exported="false" />
+        <activity
+            android:name=".PlayActivity"
+            android:exported="false" />
+        <activity
+            android:name=".sql.UpdateNoteActivity"
+            android:exported="false" />
+        <activity
+            android:name=".sql.AddNoteActivity"
+            android:exported="false" />
+        <activity
+            android:name=".Helpctivity"
+            android:exported="false" />
+        <activity
+            android:name=".AboutUsActivity"
+            android:exported="true" />
+        <activity
+            android:name=".login"
+            android:exported="true"></activity>
+        <activity
+            android:name=".register"
+            android:exported="false" />
+        <activity
+            android:name=".Hello_GudieActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".MainActivity"
+            android:exported="false" />
+        <activity android:name=".Goods.GoodsActivity"
+            android:exported="true"/>
+    </application>
+
+</manifest>

Final_Project_app/app/src/main/java/com/example/final_project_app/AboutUsActivity.java

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+package com.example.final_project_app;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.widget.Button;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+public class AboutUsActivity extends AppCompatActivity {
+    private Button btn_back;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_about_us);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+    /*     btn_back = findViewById(R.id.btn_back);
+         btn_back.setOnClickListener(new View.OnClickListener() {
+             @Override
+             public void onClick(View view) {
+                 FragmentManager fm = getSupportFragmentManager();
+                 FragmentTransaction ft = fm.beginTransaction();
+                 ft.replace(R.id.fg_main,new FourFragment());
+                 ft.addToBackStack(null);
+
+                 ft.commit();
+                 Intent intent = new Intent(AboutUsActivity.this, FourFragment.class);
+                 startActivity(intent);
+             }
+         });*/
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/ChexBoxFragment.java

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+package com.example.final_project_app;
+
+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.CheckBox;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link ChexBoxFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class ChexBoxFragment extends Fragment {
+    //成员变量
+    private TextView question_stem;//题干文本框控件，就是选中的控件显示
+    private CheckBox[] cb =new CheckBox[5];
+    private Question question;//题目对象就是标题，单选多选，正确下标
+    private int result;//正确为1 错误为0 未答题为-1
+    private View view;
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        Log.e("复选onCreateView","复选onCreateView执行了");
+        view=inflater.inflate(R.layout.fragment_chex_box, container, false);
+        return view;
+    }
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        Log.e("复选onViewCreated","复选onViewCreated执行了");
+        //初始化控件
+        initView(view);
+        //更新题目
+        nextQuestion(question);
+    }
+    //获取题目
+    public void setQuestion(Question question){
+        this.question=question;
+    }
+
+    public void clearChoice(){
+        //清除选择
+        for (int i = 0; i < cb.length; i++) {
+            cb[i].setChecked(false);
+        }
+    }
+    //初始化控件
+    public void initView(final View view){
+        Log.e("复选initView","复选initView执行了");
+        //获取题干
+        question_stem=view.findViewById(R.id.question_item2);
+        //单选控件
+        cb[0]=view.findViewById(R.id.boxs1);
+        cb[1]=view.findViewById(R.id.boxs2);
+        cb[2]=view.findViewById(R.id.boxs3);
+        cb[3]=view.findViewById(R.id.boxs4);
+        cb[4]=view.findViewById(R.id.boxs5);
+    }
+    //更新题目
+    public void nextQuestion(Question question){
+        Log.e("复选nextQuestion","nextQuestion执行了");
+        //设置题干
+        Log.e("a",question.getQuestionStem());
+        question_stem.setText(question.getQuestionStem());
+        //设置选项
+        for (int i=0;i<cb.length;i++){
+            //所有选项初始都未选中
+            cb[i].setChecked(false);
+            //设置选项内容
+            cb[i].setText(question.getOptions()[i]);
+            //设置背景颜色
+            cb[i].setBackgroundResource(R.drawable.select_button_text);
+            //设置字体颜色
+            cb[i].setTextColor(getResources().getColor(R.color.black));
+        }
+    }
+    //判断选择结果
+    public int getResult(Question question){
+        //得到正确的选项的下标数组
+        String[] correctOptions = question.getCorrectOptions().split(",");
+        boolean answer = true; //记录正确答案是否选择
+        int checkednum = 0;  //选择的选项个数
+        for(int i = 0; i < cb.length; i++){
+            if(cb[i].isChecked()){
+                checkednum++;  //选项个数增加
+            }
+        }
+        if(checkednum == 0){
+            Toast.makeText(getContext(),"请选择答案！",Toast.LENGTH_SHORT).show();
+            result = -1;
+        }else{
+            for(int i=0;i< cb.length;i++){
+                cb[i].setBackgroundResource(R.drawable.shape_radiobutton2);
+            }
+            if(checkednum==correctOptions.length){
+                for (String correctOption : correctOptions) {
+                    //判断对应的选项是否被选择
+                    boolean now = cb[Integer.parseInt(correctOption)].isChecked();
+                    answer = answer && now;
+                }
+            }else {
+                answer=false;
+            }
+            if(answer){
+                for (String correctOption : correctOptions) {
+                    //判断对应的选项是否被选择
+                    CheckBox c = cb[Integer.parseInt(correctOption)];
+                    c.setBackgroundResource(R.drawable.shape_success_answer);
+                    c.setTextColor(getResources().getColor(R.color.black));
+                }
+                result = 1;
+            }else{
+                for (CheckBox checkBox : cb) {
+                    if (checkBox.isChecked()) {
+                        checkBox.setBackgroundResource(R.drawable.shape_error_answer);
+                        checkBox.setTextColor(getResources().getColor(R.color.black));
+                    }
+                }
+                showCorrectAnswer(correctOptions);
+                result = 0;
+            }
+        }
+
+        return result;
+    }
+    //显示正确答案的dialog
+    private void showCorrectAnswer(String[] correctOptions) {
+        //得到正确答案
+        String answer = "";
+        for (String correctOption : correctOptions) {
+            answer += cb[Integer.parseInt(correctOption)].getText().toString() + "\n";
+        }
+        AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
+        builder.setTitle("正确答案")
+                .setMessage(answer)
+                .setNegativeButton("确定", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+
+                    }
+                });
+        builder.create().show();
+    }
+
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Fragment/FirstFragment.java

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+package com.example.final_project_app.Fragment;
+
+import android.annotation.SuppressLint;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.final_project_app.Goods.Goods;
+import com.example.final_project_app.Goods.GoodsAdapter;
+import com.example.final_project_app.Goods.GoodsData;
+import com.example.final_project_app.R;
+import com.example.final_project_app.adpter.BannerViewAdapter;
+import com.example.final_project_app.db.CultrualData;
+import com.example.final_project_app.db.bannerBean;
+import com.youth.banner.Banner;
+import com.youth.banner.indicator.CircleIndicator;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class FirstFragment extends Fragment  {
+//定义列表，放内容
+    private GoodsData goodsData;
+    private List<Goods> goodsList = new ArrayList<>();
+
+    //定义轮播图片
+    private final ArrayList<bannerBean> banners;
+
+    //定义文物列表
+    private List<CultrualData> CuList = new ArrayList<CultrualData>();
+    //定义布局
+    private RecyclerView recyclerView;
+    //定义文物适配器
+    CultrualAdapter adapter;
+    //轮播
+    public FirstFragment() {
+        //本地图片
+        banners = new ArrayList<>();
+        banners.add(new bannerBean(R.drawable.banner1));
+        banners.add(new bannerBean(R.drawable.banner2));
+        banners.add(new bannerBean(R.drawable.banner3));
+        banners.add(new bannerBean(R.drawable.banner4));
+        banners.add(new bannerBean(R.drawable.banner5));
+        banners.add(new bannerBean(R.drawable.banner6));
+    }
+    //
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View inflate = inflater.inflate(R.layout.fg_first, container, false);        // 通过inflater获取页面
+
+//        initCrlists();
+        //获取recyclerview水平可滑动列表
+        recyclerView = inflate.findViewById(R.id.recycler_view);
+        adapter = new CultrualAdapter();
+        recyclerView.setAdapter(adapter);
+        goodsData = new GoodsData(inflate.getContext());
+        goodsList = goodsData.getGoodsList();
+
+        LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
+        //设置间隔线
+        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL);
+        recyclerView.addItemDecoration(dividerItemDecoration);
+        layoutManager.setOrientation(recyclerView.VERTICAL);//水平/垂直显示
+        recyclerView.setLayoutManager(layoutManager);
+
+
+        GoodsAdapter adapter = new GoodsAdapter(goodsList);
+        recyclerView.setAdapter(adapter);
+        //获取banner
+        Banner banner = inflate.findViewById(R.id.banner);
+        //设置banner
+        //添加生命周期，回调这个方法
+        banner.addBannerLifecycleObserver(this)
+                //为banner设置适配器，并将数据传递进去
+                .setAdapter(new BannerViewAdapter(banners, this))
+                //添加指示器
+                .setIndicator(new CircleIndicator(getContext()));
+        return inflate;
+        //返回inflate对象
+    }
+    //菜单按钮点击事件
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        //        //菜单栏点击跳转事件
+   /*     menu_bnt1 = getActivity().findViewById(R.id.btn1);
+        menu_bnt1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), waitActivity.class);
+                startActivity(intent);
+            }
+        });
+        menu_btn2= getActivity().findViewById(R.id.btn2);
+        menu_btn2.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), waitActivity2.class);
+                startActivity(intent);
+            }
+        });
+        menu_btn3=getActivity().findViewById(R.id.btn3);
+        menu_btn3.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), waitActivity3.class);
+                startActivity(intent);
+            }
+        });
+        menu_btn4 = getActivity().findViewById(R.id.btn4);
+        menu_btn4.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), waitActivity5.class);
+                startActivity(intent);
+            }
+        });*/
+    }
+//文物列表通过add将数据加入列表中
+//    private void initCrlists() {
+//        CultrualData list1 = new CultrualData("商.铜神树枝头花蕾及立鸟", R.drawable.cr_list1);
+//        CuList.add(list1);
+//        CultrualData list2 = new CultrualData("商晚.青铜器妇好鹄尊", R.drawable.cr_list2);
+//        CuList.add(list2);
+//        CultrualData list3 = new CultrualData("商晚.青铜器牛方鼎", R.drawable.cr_list3);
+//        CuList.add(list3);
+//        CultrualData list4 = new CultrualData("西周.青铜器凤纹尊", R.drawable.cr_list4);
+//        CuList.add(list4);
+//        CultrualData list5 = new CultrualData("五代.青瓷提梁倒灌壶", R.drawable.cr_list5);
+//        CuList.add(list5);
+//        CultrualData list6 = new CultrualData("西周.鸟纹觥", R.drawable.cr_list6);
+//        CuList.add(list6);
+//        CultrualData list7 = new CultrualData("三星堆", R.drawable.cr_list7);
+//        CuList.add(list7);
+//        CultrualData list8 = new CultrualData("商代.鹄卣", R.drawable.cr_list8);
+//        CuList.add(list8);
+//        CultrualData list9 = new CultrualData("兽面纹铜钺", R.drawable.cr_list9);
+//        CuList.add(list9);
+//    }
+
+    class CultrualAdapter extends RecyclerView.Adapter<MyViewHoder> {
+        @NonNull
+        @Override
+        public MyViewHoder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+            View view = View.inflate(getContext(), R.layout.cltrua_list, null);
+            MyViewHoder myViewHoder = new MyViewHoder(view);
+            // 将View对象传入ViewHolder构造函数创建ViewHolder对象并返回
+            return myViewHoder;
+        }
+
+        // onBindViewHolder方法，用于绑定数据到ViewHolder对象
+        // 参数holder表示要绑定的ViewHolder对象，position表示当前项的位置
+        @Override
+        public void onBindViewHolder(@NonNull MyViewHoder holder, @SuppressLint("RecyclerView") int position) {
+            // 从数据列表中获取当前位置的数据
+            CultrualData Cul = CuList.get(position);
+            //第二步
+            // 将数据设置到ViewHolder对象的textView中
+            // holder.textView.setText(fruit.getName());//fruit.getImageId()
+            holder.imageview.setBackgroundResource(Cul.getImageId());
+            holder.itemView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    Toast.makeText(getContext(),
+                            ""+CuList.get(position),
+                            Toast.LENGTH_LONG).show();
+                }
+            });
+
+        }
+
+        @Override
+        public int getItemCount() {
+            return CuList.size();
+        }
+    }
+    class MyViewHoder extends RecyclerView.ViewHolder {
+        TextView textView;
+        ImageView imageview;
+        public MyViewHoder(@NonNull View itemView) {
+            super(itemView);
+            textView = itemView.findViewById(R.id.fruit_name);
+            imageview = itemView.findViewById(R.id.fruit_image);
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Fragment/FourFragment.java

@@ -0,0 +1,92 @@
+package com.example.final_project_app.Fragment;
+
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.example.final_project_app.AboutUsActivity;
+import com.example.final_project_app.Helpctivity;
+import com.example.final_project_app.R;
+import com.example.final_project_app.login;
+
+public class FourFragment extends FirstFragment {
+    private RelativeLayout quite,aboutus,help;
+    private TextView username,userpwd;
+    SharedPreferences sp1;
+
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fg_four,container,false);
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        //获取用户名和密码控件
+        username = getActivity().findViewById(R.id.username);
+        userpwd = getActivity().findViewById(R.id.userpwd);
+
+        //获取退出控件
+        quite = getActivity().findViewById(R.id.re_quite);
+        //退出点击事件
+        quite.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+                builder.setTitle("提示");
+                builder.setMessage("是否确定退出");
+                builder.setIcon(R.drawable.back_home0);
+                //确定
+                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialogInterface, int i) {
+                        Intent intent = new Intent(getActivity(), login.class);
+                        startActivity(intent);
+                    }
+                });
+                //取消
+                builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialogInterface, int i) {
+                        dialogInterface.dismiss(); //关闭提示框
+                    }
+                });
+                //生成提示框并显示
+                AlertDialog alertDialog = builder.create();
+                alertDialog.show();
+            }
+        });
+        //关于我们点击事件
+        aboutus = getActivity().findViewById(R.id.re_aboutus);
+        aboutus.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), AboutUsActivity.class);
+                startActivity(intent);
+            }
+        });
+        //帮助与反馈
+        help = getActivity().findViewById(R.id.re_help);
+        help.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), Helpctivity.class);
+                startActivity(intent);
+            }
+        });
+
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Fragment/ThreeFragment.java

@@ -0,0 +1,99 @@
+package com.example.final_project_app.Fragment;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.final_project_app.R;
+import com.example.final_project_app.adpter.NoteRecyAdapter;
+import com.example.final_project_app.QuestionActivity;
+import com.example.final_project_app.db.NoteBook;
+import com.example.final_project_app.db.NoteData;
+import com.example.final_project_app.sql.AddNoteActivity;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+
+public class ThreeFragment extends FirstFragment  {
+    private Button btn_add,btn_awser;
+
+    private NoteBook nb;
+    private RecyclerView recy;
+    private List<NoteData> datas;
+
+    private NoteRecyAdapter mAdapter;
+    @SuppressLint("MissingInflatedId")
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fg_three, container, false);
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        //初始化数据
+        initdata();
+        //获取控件
+        recy = getActivity().findViewById(R.id.recy);
+        mAdapter = new com.example.final_project_app.adpter.NoteRecyAdapter(datas,getContext());
+        LinearLayoutManager lm = new LinearLayoutManager(getContext());
+        recy.setAdapter(mAdapter);
+        recy.setLayoutManager(lm);
+        //添加按钮
+        btn_add = getActivity().findViewById(R.id.btn_add);
+        btn_add.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), AddNoteActivity.class);
+                startActivity(intent);
+            }
+        });
+        btn_awser = getActivity().findViewById(R.id.btn_awser);
+        btn_awser.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), QuestionActivity.class);
+                startActivity(intent);
+            }
+        });
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        refreshData();
+        mAdapter.refresh(datas);
+    }
+    private void refreshData() {
+        datas = getDataFromSQL();
+
+    }
+
+    private void initdata() {
+        datas = new ArrayList<NoteData>();
+        nb = new NoteBook(getContext());
+        datas = getDataFromSQL();
+    }
+    private List<NoteData> getDataFromSQL() {
+        return nb.query();
+    }
+    private String getSystemCurrentTime() {
+        SimpleDateFormat sdf = new SimpleDateFormat("YYYY年MM月dd HH:mm:ss");
+        Date datetime = new Date();
+        return   sdf.format(datetime);
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Fragment/TwoFragment.java

@@ -0,0 +1,62 @@
+package com.example.final_project_app.Fragment;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.StaggeredGridLayoutManager;
+
+import com.example.final_project_app.R;
+import com.example.final_project_app.adpter.MovieAdapter;
+import com.example.final_project_app.db.Movie;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TwoFragment extends FirstFragment{
+    RecyclerView recyclerView;
+    List<Movie> movieList;
+    MovieAdapter movieAdapter;
+    private static final String TAG="MovieActivity";
+    
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fg_two,container,false);
+        return view;
+    }
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        recyclerView = getActivity().findViewById(R.id.fg_tworecyclerview);
+        initData();
+    }
+    private void initData() {
+        //建立动态数组存放数据
+        movieList = new ArrayList<>();
+        //获取网络视频
+      /*  Movie firstmovie = new Movie("kkkkk1", "http://vfx.mtime.cn/Video/2019/02/04/mp4/190204084208765161.mp4");
+        movieList.add(firstmovie);
+   /*     //获取本工程中的视频*/
+        Movie one=new Movie("形式如何？适合自己才是王道","android.resource://"+getActivity().getPackageName()+"/"+R.raw.one);
+        movieList.add(one);
+        Movie two=new Movie("考研or考公？如何抉择","android.resource://"+ getActivity().getPackageName()+"/"+R.raw.two);
+        movieList.add(two);
+        Movie three=new Movie("考研流程一览","android.resource://"+ getActivity().getPackageName()+"/"+R.raw.three);
+        movieList.add(three);
+        Movie four=new Movie("NEW1","android.resource://"+ getActivity().getPackageName()+"/"+R.raw.kaogongone);
+        movieList.add(four);
+        Movie five=new Movie("NEW2","android.resource://"+ getActivity().getPackageName()+"/"+R.raw.one);
+        movieList.add(five);
+        Movie six=new Movie("NEW3","android.resource://"+ getActivity().getPackageName()+"/"+R.raw.two);
+        movieList.add(six);
+        //将视频显示在控件上
+        movieAdapter = new MovieAdapter(movieList);
+        StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.VERTICAL);
+        recyclerView.setLayoutManager(layoutManager);
+        recyclerView.setAdapter(movieAdapter);
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Goods/Goods.java

@@ -0,0 +1,60 @@
+package com.example.final_project_app.Goods;
+
+public class Goods {
+    private int goodsId;
+    private String goodsName;
+    private String goodsNotice;
+//    private int goodsPrice;
+    private int goodsImg;
+
+    public Goods() {
+
+    }
+
+    public Goods(String goodsName, String goodsNotice, int goodPrice, int goodsImg) {
+        this.goodsName = goodsName;
+        this.goodsNotice = goodsNotice;
+       // this.goodsPrice = goodPrice;
+        this.goodsImg = goodsImg;
+    }
+
+    public int getGoodsId() {
+        return goodsId;
+    }
+
+    public void setGoodsId(int goodsId) {
+        this.goodsId = goodsId;
+    }
+
+    public String getGoodsName() {
+        return goodsName;
+    }
+
+    public void setGoodsName(String goodsName) {
+        this.goodsName = goodsName;
+    }
+
+    public String getGoodsNotice() {
+        return goodsNotice;
+    }
+
+    public void setGoodsNotice(String goodsNotice) {
+        this.goodsNotice = goodsNotice;
+    }
+
+//    public int getGoodPrice() {
+//        return goodsPrice;
+//    }
+
+//    public void setGoodPrice(int goodPrice) {
+//        this.goodsPrice = goodPrice;
+//    }
+
+    public int getGoodsImg() {
+        return goodsImg;
+    }
+
+    public void setGoodsImg(int goodsImg) {
+        this.goodsImg = goodsImg;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Goods/GoodsActivity.java

@@ -0,0 +1,55 @@
+package com.example.final_project_app.Goods;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.final_project_app.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class GoodsActivity extends AppCompatActivity {
+    private ImageView imageView;
+    private TextView goodsPrice,goodsName,goodsNotice;
+
+    private List<Goods> goodsList = new ArrayList<>();
+    private Goods goods;
+    private Button gom;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_goods);
+
+        imageView = findViewById(R.id.img);
+        goodsName = findViewById(R.id.name);
+      //  goodsPrice = findViewById(R.id.price);
+        goodsNotice = findViewById(R.id.notice);
+
+        Intent intent = getIntent();
+        int goodsId = intent.getIntExtra("goodsId",0);
+
+        GoodsData goodsData = new GoodsData(GoodsActivity.this);
+        goodsList = goodsData.getGoodsList();
+        goods = goodsList.get(goodsId);
+
+        imageView.setImageResource(goods.getGoodsImg());
+        goodsName.setText(goods.getGoodsName());
+       // goodsPrice.setText("￥"+String.valueOf(goods.getGoodPrice())+"元");
+        goodsNotice.setText(goods.getGoodsNotice());
+
+//        gom = (Button) findViewById(R.id.gm);
+//        gom.setOnClickListener(new View.OnClickListener() {
+//            @Override
+//            public void onClick(View view) {
+//                Intent intent = new Intent(GoodsActivity.this, plActivity.class);
+//                startActivity(intent);
+//            }
+//        });
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Goods/GoodsAdapter.java

@@ -0,0 +1,72 @@
+package com.example.final_project_app.Goods;
+
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.final_project_app.R;
+
+import java.util.List;
+
+public class GoodsAdapter extends RecyclerView.Adapter<GoodsAdapter.ViewHolderR>{
+    private List<Goods> mGoodsList;
+
+    public GoodsAdapter(List<Goods> mGoodsList) {
+        this.mGoodsList = mGoodsList;
+    }
+
+    @NonNull
+    @Override
+    public ViewHolderR onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.goods_item,parent,false);
+
+        final ViewHolderR holderR = new ViewHolderR(view);
+
+        /*RecyclerView子项点击事件：携带商品id跳转至商品详情页*/
+        holderR.goodsView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(view.getContext(),GoodsActivity.class);
+                intent.putExtra("goodsId",holderR.getAdapterPosition());
+                view.getContext().startActivity(intent);
+            }
+        });
+        return holderR;
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolderR holder, int position) {
+        Goods goods = mGoodsList.get(position);
+        holder.goodsImage.setImageResource(goods.getGoodsImg());
+        holder.goodsNotice.setText("热门");
+        holder.goodsName.setText(goods.getGoodsName());
+        holder.goodsNotice.setText(goods.getGoodsNotice());
+
+    }
+
+    @Override
+    public int getItemCount() {
+        return mGoodsList.size();
+    }
+
+    static class ViewHolderR extends RecyclerView.ViewHolder{
+        View goodsView;
+        ImageView goodsImage;
+        TextView goodsPrice,goodsName,goodsNotice;
+
+        public ViewHolderR(@NonNull View itemView) {
+            super(itemView);
+            goodsView = itemView;
+            goodsImage = itemView.findViewById(R.id.goods_img);
+          //  goodsPrice = itemView.findViewById(R.id.goods_price);
+            goodsName = itemView.findViewById(R.id.goods_name);
+            goodsNotice = itemView.findViewById(R.id.goods_notice);
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Goods/GoodsData.java

@@ -0,0 +1,101 @@
+package com.example.final_project_app.Goods;
+
+import android.content.Context;
+
+import com.example.final_project_app.R;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+public class GoodsData {
+    private List<Goods> goodsList= new ArrayList<>();
+//    private String[] data_name= {"惊悚:我只卖凶宅","霸道总裁爱上我",
+//            "心理罪:十宗罪","阴间神探","六年后,大小姐带着系统杀回来了"
+//            ,"13路末班车","恐怖酒馆:我只养大凶之物","向盛夏"
+//            ,"许你年年岁岁好","揉碎温柔"};
+
+    private Context context;
+
+    public GoodsData(Context context) {
+        this.context = context;
+    }
+
+    public List<Goods> getGoodsList(){
+        initGoodsList();
+        return goodsList;
+    }
+
+    /*初始化商品数据列表*/
+    private void initGoodsList() {
+        Goods top1 = new Goods("2023年全国教育事业发展基本情况",getNotice
+                ("2023年是全面贯彻党的二十大精神开局之年，是实施“十四五”规划承上启下习贯彻习近平总书记关于教育的重要论述，" +
+                        "贯彻落实党的二十大精神，牢牢把握教育的政治属性、战略属性和民生属性，锚定教育强国建设目标，扎实推动教育事业高质量发展取得新突破。")
+                ,getPrice(), R.drawable.sy1);
+        goodsList.add(top1);
+        Goods top2 = new Goods("2024年国家助学贷款免息及本金延期偿还如何操作？",getNotice
+                ("官方解读：为贯彻落实国务院常务会议决策部署，财政部、教育部、中国人民银行、金融监管总局认真研究，" +
+                        "报经国务院同意，决定2024年延续实施国家助学贷款免息及本金延期偿还政策。本次措施的出台，预计减免利息24.4亿元，" +
+                        "惠及约550万名高校毕业生，有助于缓解贷款学生经济压力和就业压力，帮助学生维护个人信用记录，促进其顺利就业。")
+                ,getPrice(),R.drawable.sy2);
+        goodsList.add(top2);
+        Goods top3 = new Goods("快讯！2024年研考国家线发布",getNotice
+                ("近日，教育部部署2024年全国硕士研究生招生复试录取工作，要求各地各招生单位以习近平新时代中国特色社会主义思想为指导，" +
+                        "深入贯彻党的二十大精神，全面贯彻党的教育方针，落实立德树人根本任务，坚持综合评价、择优录取，严格执行政策，严守工作纪律，" +
+                        "规范录取行为，优化考生服务，确保2024年硕士研究生复试录取工作公平、公正、科学。教育部要求招生单位加强招生信息公开，" +
+                        "提前在本单位招生网站和“中国研究生招生信息网”上发布本单位复试、调剂、录取工作办法，及时、准确做好政策宣传解读、咨询答复。")
+                ,getPrice(),R.drawable.sy3);
+        goodsList.add(top3);
+        Goods top4 = new Goods("2024年（第三届）研究生招生与培养高峰论坛在成都举办",getNotice
+                ("5月16日，2024年（第三届）研究生招生与培养高峰论坛在成都举行。本次论坛以“乘势而上攀高向强”为主题，旨在为各地区高校、科研院所提供优质交流平台，" +
+                        "共话新时代背景下研究生招生与培养新课题，探讨研究生教育高质量发展之路以及高层次人才选拔培养之道。")
+                ,getPrice(),R.drawable.sy4);
+        goodsList.add(top4);
+        Goods top5 = new Goods("2024国考公告已出！中央机关及其直属机构2024年度考试录用公务员公告",getNotice
+                ("提交报考申请。报考者可于2023年10月15日8:00至10月24日18:00期间登录专题网站进行报名并提交报考申请，" +
+                        "每次只能选报1个职位。报名时，应当仔细阅读诚信承诺书，提交的报考申请材料应当真实、准确、完整。招录机关于2023年10月15日8:00至10月26日18:00期间" +
+                        "对报考申请进行审查，确认报考者是否具有报考资格。报考者可登录专题网站查询资格审查结果。" +
+                        "通过资格审查的，不能再报考其他职位。2023年10月15日8:00至10月24日18:00期间，报考申请未审查或者未通过资格审查的，可以改报其他职位。")
+                ,getPrice(),R.drawable.sy5);
+        goodsList.add(top5);
+        Goods top6 = new Goods("国家公务员考试政审流程是怎样的？需要哪些材料？",getNotice
+                ("1、审核资料阶段2、查阅人事档案阶段3、座谈阶段4、组织部终审 等到以上三个阶段的考察完毕后，考察组根据考生的回答及表现书写考察报告，" +
+                        "然后会把这份考察报告会跟考生提交的资料，共同上交给组织部来做最后的审核，审核结果公布时间以考察组的公示为准。")
+                ,getPrice(),R.drawable.sy6);
+        goodsList.add(top6);
+        Goods top7 = new Goods("2024国家公务员笔试时间定于11月25日至26日！",getNotice
+                ("公共科目包括行政职业能力测验和申论两科。其中，行政职业能力测验为客观性试题，申论为主观性试题，满分均为100分，" +
+                        "详见《中央机关及其直属机构2024年度考试录用公务员公共科目笔试考试大纲》。公共科目笔试试卷分为3类，分别适用于中央机" +
+                        "关及其省级直属机构综合管理类职位、市（地）级及以下直属机构综合管理类职位和行政执法类职位。所有报考者均需参加公共科目笔试。")
+                ,getPrice(),R.drawable.sy7);
+        goodsList.add(top7);
+        Goods top8 = new Goods("公务员考试是什么时候，公务员考试国考和省考的区别",getNotice
+                ("时间在每年11月的第四个中央、国家机关公务员招考每年一次，省、直辖市、自治区由各地自行决定并组织实施，" +
+                        "部分地区每年在上、下半年各组织一次考试，全国大部分地区每年只考一次，省级以下公务员主管部门不组织开展公务员考试。" +
+                        "国考题目难度要相对大于省考，编制和福利待遇不同：通过省考和国考录用的公务员均属于“国家公务员”，均按照《公务员法》和同一套制" +
+                        "度管理录用后也有统一的薪酬体系但因地域范围、部门（行业）类别及单位层级不同薪酬及晋升空间会有所差异。")
+                ,getPrice(),R.drawable.sy8);
+        goodsList.add(top8);
+
+    }
+
+    /*商品描述模拟数据*/
+    private String getNotice(String name) {
+        Random random = new Random();//创建Random对象，生成随机数
+        int length = random.nextInt(5)+1;
+        //使用nextInt方法生成一个0到4的随机整数，加1，最终结果是一个1到5的随机整数。存储在变量length中。
+        StringBuilder builder = new StringBuilder();
+        //创建StringBuilder对象，构建和修改字符串
+        for (int i = 0;i<length;i++) {
+            builder.append(name);
+        }
+        return builder.toString();
+    }
+
+    /*商品价格模拟数据*/
+    private int getPrice() {
+        Random random = new Random();
+        int price = random.nextInt(50)+1;
+        return price;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Hello_GudieActivity.java

@@ -0,0 +1,50 @@
+package com.example.final_project_app;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.widget.TextView;
+import android.os.CountDownTimer;
+import androidx.appcompat.app.AppCompatActivity;
+
+public class Hello_GudieActivity extends AppCompatActivity {
+    public TextView djs;
+    private android.os.CountDownTimer countDownTimer;
+    private long timeLeftInMillis =6000;
+    private boolean CountDownTimer;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_hello_gudie);
+        djs = findViewById(R.id.djs);
+        //启动倒计时
+        startCountdown();
+    }
+    private void startCountdown() {
+        countDownTimer =new CountDownTimer(timeLeftInMillis,1000) {
+            @Override
+            public void onTick(long millisUntilFinished) {
+                timeLeftInMillis = millisUntilFinished;
+                int secondsRemaining = (int) (millisUntilFinished / 1000);
+                djs.setText(secondsRemaining +" s");
+            }
+
+            @Override
+            public void onFinish() {
+                //跳转界面
+                startActivity(new Intent(Hello_GudieActivity.this,login.class));
+                // 倒计时结束后跳转到哪个界面
+                finish();
+
+            }
+        }.start();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (countDownTimer != null){
+            countDownTimer.cancel();
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Helpctivity.java

@@ -0,0 +1,25 @@
+package com.example.final_project_app;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class Helpctivity extends AppCompatActivity {
+    private Button btn_sure;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_helpctivity);
+        btn_sure = findViewById(R.id.btn_sure);
+        btn_sure.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Toast.makeText(Helpctivity.this, "反馈成功", Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/MainActivity.java

@@ -0,0 +1,123 @@
+package com.example.final_project_app;
+
+import android.annotation.SuppressLint;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.viewpager.widget.ViewPager;
+
+import com.example.final_project_app.Fragment.FirstFragment;
+import com.example.final_project_app.Fragment.FourFragment;
+import com.example.final_project_app.Fragment.ThreeFragment;
+import com.example.final_project_app.Fragment.TwoFragment;
+import com.example.final_project_app.adpter.MyFragmentPaperAdapter;
+
+public class MainActivity extends AppCompatActivity implements ViewPager.OnPageChangeListener{
+
+    private FrameLayout fg_main;
+    private FragmentManager fm;
+    private ViewPager vp;
+    public static final int PAGE_ONE = 0;
+    public static final int PAGE_TWO = 1;
+    public static final int PAGE_THREE = 2;
+    public static final int PAGE_FOUR = 3;
+    public static final int PAGE_Five = 4;
+    private MyFragmentPaperAdapter mPaperAdapter;
+    private TextView tv1;
+    private TextView tv2;
+    private TextView tv3;
+    private TextView tv4;
+
+
+
+    @SuppressLint("MissingInflatedId")
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        fg_main = (FrameLayout) findViewById(R.id.fg_main);
+        vp = (ViewPager) findViewById(R.id.vp);
+        tv1 = (TextView) findViewById(R.id.tv_one);
+        tv2 = (TextView) findViewById(R.id.tv_two);
+        tv3 = (TextView) findViewById(R.id.tv_three);
+        tv4 = (TextView) findViewById(R.id.tv_four);
+        mPaperAdapter = new MyFragmentPaperAdapter(getSupportFragmentManager());
+        vp.setAdapter(mPaperAdapter);
+        vp.setCurrentItem(0);
+        vp.addOnPageChangeListener((ViewPager.OnPageChangeListener) this);
+
+    }
+//MYClick点击事件
+    public void MyClick(View view){
+        FragmentManager fm = getSupportFragmentManager();
+        FragmentTransaction ft = fm.beginTransaction();
+
+        //创建页面类对象
+        FirstFragment page1 = new FirstFragment();
+        TwoFragment page2 = new TwoFragment();
+        ThreeFragment page3 = new ThreeFragment();
+        FourFragment page4 = new FourFragment();
+
+
+        //点击页面替换
+        if (view.getId()== R.id.tv_one){
+            // ft.replace(R.id.fg_main,page1);
+            vp.setCurrentItem(PAGE_ONE);
+
+        }else if (view.getId()==R.id.tv_two){
+            //ft.replace(R.id.fg_main,page2);
+            vp.setCurrentItem(PAGE_TWO);
+
+        }else if (view.getId()==R.id.tv_three) {
+            // ft.replace(R.id.fg_main, page3);
+            vp.setCurrentItem(PAGE_THREE);
+
+        }else if (view.getId()==R.id.tv_four) {
+            //ft.replace(R.id.fg_main, page4);
+            vp.setCurrentItem(PAGE_FOUR);
+        }
+        ft.commit();
+    }
+    @Override
+    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
+
+    }
+
+    @Override
+    public void onPageSelected(int position) {
+
+
+    }
+//滑动切换判断事件
+    @Override
+    public void onPageScrollStateChanged(int state) {
+
+        if (state==2){
+            switch (vp.getCurrentItem()){
+                case PAGE_ONE:
+                    tv1.setSelected(true);
+                    //tv1.setBackgroundColor(R.color.black);
+                    break;
+
+                case PAGE_TWO:
+                    tv2.setSelected(true);
+                    break;
+
+                case PAGE_THREE:
+                    tv3.setSelected(true);
+                    break;
+
+                case PAGE_FOUR:
+                    tv4.setSelected(true);
+                    break;
+
+            }
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/PlayActivity.java

@@ -0,0 +1,50 @@
+package com.example.final_project_app;
+
+import static com.example.final_project_app.db.PermissionUtiils.verifyStoragePermissions;
+
+import android.os.Bundle;
+import android.widget.MediaController;
+import android.widget.TextView;
+import android.widget.VideoView;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class PlayActivity extends AppCompatActivity {
+    private TextView tvvedioname;
+    private VideoView videoView;
+    //媒体控制器
+    private MediaController mediaController;
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_play);
+
+        tvvedioname= findViewById(R.id.tvmovename);
+        videoView=findViewById(R.id.vvmovie);
+        mediaController=new MediaController(this);
+        initData();
+        verifyStoragePermissions(this);
+
+    }
+
+    private void initData() {
+        //获取从列表传过来的视频名称和地址
+        String videoname=getIntent().getStringExtra("my");
+        String videouri=getIntent().getStringExtra("movieurl");
+        //String videourl= Environment.getExternalStorageDirectory().getAbsolutePath()+"/jay.mp4";
+        //Log.i("PlayActivity","videourl="+videourl);
+        //将视频名称显示在文本框中，将视频地址关联到播放器中
+        tvvedioname.setText(videoname);
+        videoView.setVideoPath(videouri);
+        //videoView.setVideoPath(videourl);
+        //将视频播放器和媒体控制柄关联起来
+        videoView.setMediaController(mediaController);
+        //媒体控制柄和视频播放器关联起来
+        mediaController.setMediaPlayer(videoView);
+        //启动视频播放器播放视频
+        videoView.start();
+
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/Question.java

@@ -0,0 +1,49 @@
+package com.example.final_project_app;
+
+public class Question {
+    private String questionStem;//题干
+    private String[] options;//选项
+    private String correctOptions;//正确选项的下标从0开始
+    private int questionTypes;//1 为单选题， 2为多选题
+
+    public Question(String questionStem, String[] options, String correctOptions, int questionTypes) {
+        this.questionStem = questionStem;
+        this.options = options;
+        this.correctOptions = correctOptions;
+        this.questionTypes = questionTypes;
+    }
+    public Question() {
+    }
+
+    public String getQuestionStem() {
+        return questionStem;
+    }
+
+    public void setQuestionStem(String questionStem) {
+        this.questionStem = questionStem;
+    }
+
+    public String[] getOptions() {
+        return options;
+    }
+
+    public void setOptions(String[] options) {
+        this.options = options;
+    }
+
+    public String getCorrectOptions() {
+        return correctOptions;
+    }
+
+    public void setCorrectOptions(String correctOptions) {
+        this.correctOptions = correctOptions;
+    }
+
+    public int getQuestionTypes() {
+        return questionTypes;
+    }
+
+    public void setQuestionTypes(int questionTypes) {
+        this.questionTypes = questionTypes;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/QuestionActivity.java

@@ -0,0 +1,210 @@
+package com.example.final_project_app;
+
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.CountDownTimer;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class QuestionActivity extends AppCompatActivity {
+
+    private int score=0;//答题分数
+    private final List<Question> questions=new ArrayList<>();//题目集合
+    private int i=0;//当前题号
+    private int previousType;//上一题题目类型，单选为1，多选为2
+    private int result;//答题结果，正确为1，错误为0，未答题为2
+    private Button button;//提交按钮
+    private RadioButtonFragment radioButtonFragment;//单选按钮对象
+    private ChexBoxFragment chexBoxFragment;
+    private TextView time;
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_question);
+        //初始化题目
+        initQuestions();
+        //初始化控件
+        initView();
+        //根据题形加载第一题
+        Question question=questions.get(0);
+        Log.e("question", "可以获取题目");
+        if (question.getQuestionTypes()==1){
+            //给出题目的类型
+            radioButtonFragment.setQuestion(question);
+            replaceFragment(radioButtonFragment);
+            previousType=1;//当前题型为1，为单选题
+        }else {
+            chexBoxFragment.setQuestion(question);
+            replaceFragment(chexBoxFragment);
+            previousType=2;//当前题型为2，为多选题
+        }
+    }
+    CountDownTimer countDownTimer=new CountDownTimer(120000, 1000) {
+        public void onTick(long millisUntilFinished) {
+            time.setText("剩余时间 " + millisUntilFinished / 1000+"s");
+        }
+        public void onFinish() {
+            time.setText("时间到!");
+        }
+    }.start();
+
+    //替换fragment方法
+    private void replaceFragment(Fragment Fragment) {
+        FragmentManager manager=getSupportFragmentManager();
+        FragmentTransaction transaction=manager.beginTransaction();
+        transaction.replace(R.id.fragment1,Fragment);
+        transaction.commit();
+    }
+
+    public void initQuestions(){
+        Log.e("信息更新", "执行了");
+        Question question=new Question();
+        //题干
+        question.setQuestionStem("1、下列描写思念的成语与其所适用的思念对象对应不正确的是：");
+        //选项
+        question.setOptions(new String[]{"A莼鲈之思——故乡","B蒹葭之思——恋人","C霜露之思——兄弟","D云树之思——朋友"});
+        //正确的答案
+        question.setCorrectOptions("2");
+        //题目类型
+        question.setQuestionTypes(1);
+        //把题目添加到集合中
+        questions.add(question);
+
+        Question question2=new Question();
+        //题干
+        question2.setQuestionStem("2、“二十四节气”鲜明地体现了中国人尊重自然、顺应自然规律和可持续发展的理念。下列关于“二十四节气”的说法正确的是：");
+        //选项
+        question2.setOptions(new String[]{"A起源于长江流域，是我国农历的重要组成部分","B立夏时北半球的白昼时间最长，且越往北越长","C是通过观察地球周年运动形成的时间知识体系","D春分日太阳直射地球赤道，南北半球昼夜平分"});
+        //正确的答案
+        question2.setCorrectOptions("3");
+        //题目类型
+        question2.setQuestionTypes(1);
+        //把题目添加到集合中
+        questions.add(question2);
+
+        Question question3=new Question();
+        //题干
+        question3.setQuestionStem("3、根据我国法律，敏感个人信息是一旦泄露或者非法使用，容易导致自然人的人格尊严受到侵害或者人身、财产安全受到危害的个人信息。以下不属于敏感个人信息的是:");
+        //选项css
+        question3.setOptions(new String[]{"A人脸特征","B从业经历","C医疗健康","D行踪轨迹"});
+        //正确的答案
+        question3.setCorrectOptions("1");
+        //题目类型
+        question3.setQuestionTypes(1);
+        //把题目添加到集合中
+        questions.add(question3);
+
+        Question question4=new Question();
+        //题干
+        question4.setQuestionStem("4、在马克思主义哲学中，关于社会存在和社会意识的关系，以下哪些描述是正确的？");
+        //选项
+        question4.setOptions(new String[]{"A. 社会存在决定社会意识。","B. 社会意识具有相对独立性，可以反作用于社会存在。","C. 社会意识总是与社会存在完全同步。","D. 社会意识的发展具有历史继承性。","E. 社会意识的发展不具有历史继承性。\n"});
+        //正确的答案
+        question4.setCorrectOptions("0,1,3");
+        //题目类型
+        question4.setQuestionTypes(2);
+        //把题目添加到集合中
+        questions.add(question4);
+
+        Question question5=new Question();
+        //题干
+        question5.setQuestionStem("5、马克思在《资本论》中指出，资本主义经济的直接目的是追求什么？");
+        //选项
+        question5.setOptions(new String[]{"A. 提高生产效率","B. 增加就业机会","C. 实现社会公平","D. 获得剩余价值"});
+        //正确的答案
+        question5.setCorrectOptions("3");
+        //题目类型
+        question5.setQuestionTypes(1);
+        //把题目添加到集合中
+        questions.add(question5);
+    }
+    public void initView(){
+        //找到对应控件
+        button=findViewById(R.id.submit);
+        radioButtonFragment=new RadioButtonFragment();
+        chexBoxFragment=new ChexBoxFragment();
+        time=findViewById(R.id.time);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                //如果是提交按钮，根据当前题目类型，调用getResult（）
+                if(button.getText().equals("提交")){
+                    if(questions.get(i).getQuestionTypes()==1){
+                        result=radioButtonFragment.getResult(questions.get(i));
+                    }else {
+                        result=chexBoxFragment.getResult(questions.get(i));
+                    }
+                    //如果答对了就+1分
+                    if(result==1){
+                        score++;
+                    }
+                    //如果不是第五题，就改文本为下一题，如果是第五题，就修改文本为结束
+                    if(i==4){
+                        button.setText("结束");
+                    }else if(result!=-1){
+                        button.setText("下一题");
+                    }
+                }else {
+
+                    //如果是下一题按钮，题号增加，判断你是否已经答题完成
+                    i++;
+                    if(i<questions.size()){
+                        //根据上一题类型，选择是否替换fragment
+                        if(questions.get(i).getQuestionTypes()==1){
+                            if (previousType!=1){
+                                chexBoxFragment.clearChoice();
+                                radioButtonFragment.setQuestion(questions.get(i));
+                                replaceFragment(radioButtonFragment);
+                                previousType=1;
+                            }else {
+                                radioButtonFragment.nextQuestion(questions.get(i));
+                            }
+                        }else {
+                            if(previousType!=2){
+                                radioButtonFragment.clear();
+                                chexBoxFragment.setQuestion(questions.get(i));
+                                replaceFragment(chexBoxFragment);
+                                previousType=2;
+                            }else {
+                                chexBoxFragment.nextQuestion(questions.get(i));
+                            }
+                        }
+                        button.setText("提交");
+                    }else {
+                        showDialog();
+                        button.setVisibility(View.INVISIBLE);
+                    }
+                }
+            }
+        });
+    }
+    //显示答题结束的页面
+    private void showDialog(){
+        AlertDialog.Builder builder=new AlertDialog.Builder(QuestionActivity.this);
+
+        builder.setTitle("提示");
+        builder.setMessage("答题结束得分"+score);
+        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                Intent intent=new Intent(QuestionActivity.this,QuestionActivity.class);
+                startActivity(intent);
+            }
+        });
+        builder.create().show();
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/RadioButtonFragment.java

@@ -0,0 +1,112 @@
+package com.example.final_project_app;
+
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.RadioButton;
+import android.widget.RadioGroup;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+
+public class RadioButtonFragment extends Fragment {
+    //成员变量
+    private TextView question_stem;//题干文本框控件，就是选中的控件显示
+    private RadioGroup radioGroup;
+    private RadioButton [] rb =new RadioButton[4];
+    private Question question;//题目对象就是标题，单选多选，正确下标
+    private int result;//正确为1 错误为0 未答题为-1
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        Log.e("单选onCreateView","单选onCreateView执行了");
+        View view=inflater.inflate(R.layout.fragment_radio_button, container, false);
+        return view;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        Log.e("单选onViewCreated","单选onViewCreated执行了");
+        //初始化控件
+        initView(view);
+        //更新题目
+        nextQuestion(question);
+    }
+    //获取题目
+    public void setQuestion(Question question){
+        this.question=question;
+    }
+    //初始化控件
+    public void initView(final View view){
+        Log.e("单选initView","单选initView执行了");
+        //获取题干
+        question_stem=view.findViewById(R.id.question_item);
+        radioGroup=view.findViewById(R.id.radiogroup);
+        //单选控件
+        rb[0]=view.findViewById(R.id.radio1);
+        rb[1]=view.findViewById(R.id.radio2);
+        rb[2]=view.findViewById(R.id.radio3);
+        rb[3]=view.findViewById(R.id.radio4);
+    }
+    //清空原来选项
+    public void clear(){
+        radioGroup.clearCheck();
+    }
+    //更新题目
+    public void nextQuestion(Question question){
+        Log.e("单选nextQuestion","单选nextQuestion执行了");
+        clear();
+        //设置题干
+        question_stem.setText(question.getQuestionStem());
+        //设置选项
+        for (int i=0;i<rb.length;i++){
+            //所有选项初始都未选中
+            rb[i].setChecked(false);
+            //设置选项内容
+            rb[i].setText(question.getOptions()[i]);
+            //设置背景颜色
+            rb[i].setBackgroundResource(R.drawable.select_button_text);
+            //设置字体颜色
+            rb[i].setTextColor(getResources().getColor(R.color.black));
+        }
+    }
+    //判断选择结果
+    public int getResult(Question question){
+        //正确的id下标
+        int correctIndex=Integer.parseInt(question.getCorrectOptions());
+        int correctId=rb[correctIndex].getId();
+        //当前选中的id
+        int radioId=radioGroup.getCheckedRadioButtonId();
+        if(radioId==-1){
+            Toast.makeText(getContext(), "请选择你的选项", Toast.LENGTH_SHORT).show();
+            result=-1;
+        }else {
+            for(int i=0;i< rb.length;i++){
+                rb[i].setBackgroundResource(R.drawable.shape_radiobutton2);
+            }
+            if (radioId==correctId){
+                Toast.makeText(getContext(), "回答正确", Toast.LENGTH_SHORT).show();
+                result=1;
+            }else {
+                //答案错误背景和字体变对应的颜色
+                RadioButton radioButton=getView().findViewById(radioId);
+                radioButton.setBackgroundResource(R.drawable.shape_error_answer);
+                radioButton.setTextColor(getResources().getColor(R.color.black));
+                result=0;
+            }
+            //无论正确还是错误，正确的答案都显示出来
+            rb[correctIndex].setBackgroundResource(R.drawable.shape_success_answer);
+            rb[correctIndex].setTextColor(getResources().getColor(R.color.black));
+        }
+        return result;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/adpter/BannerViewAdapter.java

@@ -0,0 +1,48 @@
+package com.example.final_project_app.adpter;
+
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.final_project_app.db.bannerBean;
+import com.youth.banner.adapter.BannerAdapter;
+
+import java.util.List;
+
+public class BannerViewAdapter extends BannerAdapter<bannerBean, BannerViewAdapter.BannerViewHodler>{
+    private Fragment fragment;
+
+    public BannerViewAdapter(List<bannerBean> datas,Fragment fragment) {
+        super(datas);
+        this.fragment = fragment;
+    }
+
+    @Override
+    public BannerViewAdapter.BannerViewHodler onCreateHolder(ViewGroup parent, int viewType) {
+        ImageView imageView = new ImageView(parent.getContext());
+        imageView.setLayoutParams(new ViewGroup.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT
+        ));
+        //setScaleType对图片进行大小处理 CENTER_CROP对原图居中显示后进行等比放缩处理，使最小边等于ImageView的相应边
+        imageView.setScaleType(ImageView.ScaleType.CENTER);
+        return new BannerViewHodler(imageView);
+    }
+    //绑定图片资源文件
+    @Override
+    public void onBindView(BannerViewAdapter.BannerViewHodler holder, bannerBean data, int position, int size) {
+        holder.imageView.setImageResource(data.picture);
+    }
+    //ViewHolder主要用于容纳view视图
+    public class BannerViewHodler extends RecyclerView.ViewHolder {
+        ImageView imageView;
+
+        public BannerViewHodler(@NonNull ImageView itemView) {
+            super(itemView);
+            this.imageView = itemView;
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/adpter/MovieAdapter.java

@@ -0,0 +1,69 @@
+package com.example.final_project_app.adpter;
+
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.final_project_app.PlayActivity;
+import com.example.final_project_app.R;
+import com.example.final_project_app.db.Movie;
+
+import java.util.List;
+
+
+public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.ViewHolder> {
+    List<Movie> mymovieList;
+    public class ViewHolder extends RecyclerView.ViewHolder {
+        View movieview;
+        TextView moviename;
+
+        public ViewHolder(@NonNull View view) {
+            super(view);
+            moviename = itemView.findViewById(R.id.moviename);
+            movieview = view;
+        }
+    }
+    //利用适配器的构造函数传入要展示的数据
+    public MovieAdapter(List<Movie> mymovieList){
+        this.mymovieList=mymovieList;
+    }
+    //创建实例，把每一行的布局加载进来，创建一个ViewHolder实例，将布局传入到构造函数中，最后将实例返回
+    public MovieAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType){
+        View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.movie_item,parent,false);
+        final ViewHolder holder=new ViewHolder(view);
+        //单击任意视频跳转到播放界面
+        holder.movieview.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                //获取位置
+                int position=holder.getAdapterPosition();
+                Movie movie=mymovieList.get(position);
+                //获取movie中的名字
+                String mymoviename=movie.getMoviename();
+                //获取视频播放地址
+                String mymovievideo=movie.getMovieuri();
+
+                //获取播放视频的位置后跳转到播放页
+                Intent intent=new Intent(view.getContext(),PlayActivity.class);
+                //然后根据位置传递信息
+                intent.putExtra("my",mymoviename);
+                intent.putExtra("movieurl",mymovievideo);
+                view.getContext().startActivity(intent);
+            }
+        });
+        return holder;
+    }
+    //对recyclerview中子项目进行赋值，通过位置得到当前的实例，然后电影名和视频显示在控件上
+    public void onBindViewHolder(@NonNull MovieAdapter.ViewHolder holder,int position){
+        Movie movie=mymovieList.get(position);
+        holder.moviename.setText(movie.getMoviename());
+    }
+    public int getItemCount(){
+        return mymovieList.size();
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/adpter/MyFragmentPaperAdapter.java

@@ -0,0 +1,59 @@
+package com.example.final_project_app.adpter;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentPagerAdapter;
+
+import com.example.final_project_app.Fragment.FirstFragment;
+import com.example.final_project_app.Fragment.FourFragment;
+import com.example.final_project_app.Fragment.ThreeFragment;
+import com.example.final_project_app.Fragment.TwoFragment;
+import com.example.final_project_app.MainActivity;
+
+
+public class MyFragmentPaperAdapter extends FragmentPagerAdapter {
+    private final FirstFragment b1;
+    private final TwoFragment b2;
+    private final ThreeFragment b3;
+    private final FourFragment b4;
+    private int PAGE = 4;
+
+    public MyFragmentPaperAdapter(@NonNull FragmentManager fm) {
+        super(fm);
+
+        b1 = new FirstFragment();
+        b2 = new TwoFragment();
+        b3 = new ThreeFragment();
+        b4 = new FourFragment();
+    }
+
+    @NonNull
+    @Override
+    public Fragment getItem(int position) {
+        Fragment fragment = null;
+        switch (position){
+            case MainActivity.PAGE_ONE:
+                fragment = b1;
+                break;
+
+            case MainActivity.PAGE_TWO:
+                fragment = b2;
+                break;
+
+            case MainActivity.PAGE_THREE:
+                fragment = b3;
+                break;
+
+            case MainActivity.PAGE_FOUR:
+                fragment = b4;
+                break;
+        }
+        return fragment;
+    }
+
+    @Override
+    public int getCount() {
+        return PAGE;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/adpter/NoteRecyAdapter.java

@@ -0,0 +1,121 @@
+package com.example.final_project_app.adpter;
+
+import android.annotation.SuppressLint;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.final_project_app.R;
+import com.example.final_project_app.db.NoteBook;
+import com.example.final_project_app.db.NoteData;
+import com.example.final_project_app.sql.UpdateNoteActivity;
+
+import java.util.List;
+
+
+public class NoteRecyAdapter extends RecyclerView.Adapter<NoteRecyAdapter.MyViewHolder> {
+    private List<NoteData> dataList;
+    private Context context;
+    private TextView tv_edit,tv_deledt;
+
+    public NoteRecyAdapter(List<NoteData> dataList, Context context) {
+        this.dataList = dataList;
+        this.context = context;
+    }
+
+    @NonNull
+    @Override
+    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+       //加载布局
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.note_item_recy,parent,false);
+        MyViewHolder myViewHolder = new MyViewHolder(view);
+
+
+        return myViewHolder;
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull MyViewHolder holder, @SuppressLint("RecyclerView") int position) {
+        NoteData data = dataList.get(position);
+        holder.tv_title.setText(data.getTitle());
+        holder.tv_time.setText(data.getTimee());
+        holder.tv_content.setText(data.getContent());
+
+        holder.itemView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Dialog dg = new Dialog(context, android.R.style.ThemeOverlay_Material_Dialog_Alert);
+                View view = LayoutInflater.from(context).inflate(R.layout.note_dialog,null);
+
+                TextView tv_edit= view.findViewById(R.id.tv_edit);
+                TextView tv_delete = view.findViewById(R.id.tv_delete);
+                tv_edit.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View view) {
+                        Intent intent = new Intent(context, UpdateNoteActivity.class);//跳转到更新编辑页面
+                        intent.putExtra("data_sql",data);
+                        context.startActivity(intent);
+                    }
+                });
+                tv_delete.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View view) {
+                        //删除
+                        NoteBook noteBook = new NoteBook(context);
+                        int row = noteBook.deleteById(data);
+                        if (row>0){
+                            removeData(position);
+                            Toast.makeText(context, "删除成功", Toast.LENGTH_SHORT).show();
+                        }else {
+                            Toast.makeText(context, "删除失败", Toast.LENGTH_SHORT).show();
+                        }
+
+                    }
+                });
+                dg.setContentView(view);
+                dg.show();
+            }
+        });
+    }
+//删除
+    private void removeData(int position) {
+        //从列表删除数据
+        dataList.remove(position);
+        notifyItemRemoved(position);
+    }
+
+
+    @Override
+    public int getItemCount() {
+        return dataList.size();
+    }
+
+    public void refresh(List<NoteData> datas) {
+        this.dataList = datas;
+        notifyDataSetChanged();
+    }
+
+    class MyViewHolder extends RecyclerView.ViewHolder{
+        private TextView tv_title;
+        private TextView tv_time;
+        private TextView tv_content;
+
+        public MyViewHolder(@NonNull View itemView) {
+            super(itemView);
+
+            tv_title = (TextView) itemView.findViewById(R.id.tv_title);
+            tv_time = (TextView) itemView.findViewById(R.id.tv_time);
+            tv_content = (TextView) itemView.findViewById(R.id.tv_content);
+
+
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/dao/UserDao.java

@@ -0,0 +1,163 @@
+package com.example.final_project_app.dao;
+
+import android.util.Log;
+
+import com.example.final_project_app.entity.User;
+import com.example.final_project_app.utils.JDBCUtils;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.util.HashMap;
+
+/**
+
+ * **/
+public class UserDao {
+
+    private static final String TAG = "mysql-myapplication-UserDao";
+
+    /**
+     * function: 登录
+     * */
+    public int login(String userAccount, String userPassword){
+
+        HashMap<String, Object> map = new HashMap<>();
+        // 根据数据库名称，建立连接
+        Connection connection = JDBCUtils.getConn();
+        int msg = 0;
+        try {
+            // mysql简单的查询语句。这里是根据user表的userAccount字段来查询某条记录
+            String sql = "select * from user where userAccount = ?";
+            if (connection != null){// connection不为null表示与数据库建立了连接
+                PreparedStatement ps = connection.prepareStatement(sql);
+                if (ps != null){
+                    Log.e(TAG,"账号：" + userAccount);
+                    //根据账号进行查询
+                    ps.setString(1, userAccount);
+                    // 执行sql查询语句并返回结果集
+                    ResultSet rs = ps.executeQuery();
+                    int count = rs.getMetaData().getColumnCount();
+                    //将查到的内容储存在map里
+                    while (rs.next()){
+                        // 注意：下标是从1开始的
+                        for (int i = 1;i <= count;i++){
+                            String field = rs.getMetaData().getColumnName(i);
+                            map.put(field, rs.getString(field));
+                        }
+                    }
+                    connection.close();
+                    ps.close();
+
+                    if (map.size()!=0){
+                        StringBuilder s = new StringBuilder();
+                        //寻找密码是否匹配
+                        for (String key : map.keySet()){
+                            if(key.equals("userPassword")){
+                                if(userPassword.equals(map.get(key))){
+                                    msg = 1;            //密码正确
+                                }
+                                else
+                                    msg = 2;            //密码错误
+                                break;
+                            }
+                        }
+                    }else {
+                        Log.e(TAG, "查询结果为空");
+                        msg = 3;
+                    }
+                }else {
+                    msg = 0;
+                }
+            }else {
+                msg = 0;
+            }
+        }catch (Exception e){
+            e.printStackTrace();
+            Log.d(TAG, "异常login：" + e.getMessage());
+            msg = 0;
+        }
+        return msg;
+    }
+
+
+    /**
+     * function: 注册
+     * */
+    public boolean register(User user){
+        HashMap<String, Object> map = new HashMap<>();
+        // 根据数据库名称，建立连接
+        Connection connection = JDBCUtils.getConn();
+
+        try {
+            String sql = "insert into user(userAccount,userPassword,userName,userType,userState,userDel) values (?,?,?,?,?,?)";
+            if (connection != null){// connection不为null表示与数据库建立了连接
+                PreparedStatement ps = connection.prepareStatement(sql);
+                if (ps != null){
+
+                    //将数据插入数据库
+                    ps.setString(1,user.getUserAccount());
+                    ps.setString(2,user.getUserPassword());
+                    ps.setString(3,user.getUserName());
+                    ps.setInt(4,user.getUserType());
+                    ps.setInt(5, user.getUserState());
+                    ps.setInt(6,user.getUserDel());
+
+                    // 执行sql查询语句并返回结果集
+                    int rs = ps.executeUpdate();
+                    if(rs>0)
+                        return true;
+                    else
+                        return false;
+                }else {
+                    return  false;
+                }
+            }else {
+                return  false;
+            }
+        }catch (Exception e){
+            e.printStackTrace();
+            Log.e(TAG, "异常register：" + e.getMessage());
+            return false;
+        }
+
+    }
+
+    /**
+     * function: 根据账号进行查找该用户是否存在
+     * */
+    public User findUser(String userAccount) {
+
+        // 根据数据库名称，建立连接
+        Connection connection = JDBCUtils.getConn();
+        User user = null;
+        try {
+            String sql = "select * from user where userAccount = ?";
+            if (connection != null){// connection不为null表示与数据库建立了连接
+                PreparedStatement ps = connection.prepareStatement(sql);
+                if (ps != null) {
+                    ps.setString(1, userAccount);
+                    ResultSet rs = ps.executeQuery();
+
+                    while (rs.next()) {
+                        //注意：下标是从1开始
+                        int id = rs.getInt(1);
+                        String userAccount1 = rs.getString(2);
+                        String userPassword = rs.getString(3);
+                        String userName = rs.getString(4);
+                        int userType = rs.getInt(5);
+                        int userState = rs.getInt(6);
+                        int userDel = rs.getInt(7);
+                        user = new User(id, userAccount1, userPassword, userName, userType, userState, userDel);
+                    }
+                }
+            }
+        }catch (Exception e){
+            e.printStackTrace();
+            Log.d(TAG, "异常findUser：" + e.getMessage());
+            return null;
+        }
+        return user;
+    }
+
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/db/CultrualData.java

@@ -0,0 +1,30 @@
+package com.example.final_project_app.db;
+
+public class CultrualData {
+    private String name;
+    private int image;
+    public CultrualData() {
+
+    }
+    public CultrualData(String name, int imageId) {
+        this.name = name;
+        this.image = imageId;
+    }
+
+    @Override
+    public String toString() {
+        return "简介：" + name ;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getImageId() {
+        return image;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/db/Movie.java

@@ -0,0 +1,16 @@
+package com.example.final_project_app.db;
+
+public class Movie {
+    private String moviename;
+    private String movieuri;
+    public Movie(String moviename,String movieuri){
+        this.moviename=moviename;
+        this.movieuri=movieuri;
+    }
+    public String getMoviename(){
+        return moviename;
+    }
+    public String getMovieuri(){
+        return movieuri;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/db/NoteBook.java

@@ -0,0 +1,77 @@
+package com.example.final_project_app.db;
+
+import android.annotation.SuppressLint;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class NoteBook extends SQLiteOpenHelper {
+    private List<NoteData> dataList;
+    private static final String DB_NAME = "note.db";
+    private static final String TABLE_NAME = "notebook";
+    private static final String CREATE_TABLE = "create table "+
+            TABLE_NAME +" (id integer primary key autoincrement," +
+            "title text,timee text,content text)";
+    public NoteBook(Context context) {
+        super(context, DB_NAME, null, 1);
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        db.execSQL(CREATE_TABLE);
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int i, int i1) {
+
+
+    }
+
+    public long insert(NoteData dt){
+        SQLiteDatabase sd = getWritableDatabase();
+        ContentValues values = new ContentValues();
+        values.put("title",dt.getTitle());
+        values.put("content",dt.getContent());
+        values.put("timee",dt.getTimee());
+        return sd.insert(TABLE_NAME,null,values);
+    }
+
+    public List<NoteData> query() {
+        List<NoteData> dtlist = new ArrayList<>();
+        SQLiteDatabase sd = getWritableDatabase();
+        Cursor cursor = sd.query(TABLE_NAME,null,null,null,null,null,null);
+        if (cursor!=null) {
+            while (cursor.moveToNext()){
+                @SuppressLint("Range") String title = cursor.getString(cursor.getColumnIndex("title"));
+                @SuppressLint("Range") String content = cursor.getString(cursor.getColumnIndex("content"));
+                @SuppressLint("Range") String timee = cursor.getString(cursor.getColumnIndex("timee"));
+
+                NoteData dt_sql = new NoteData();
+                dt_sql.setTitle(title);
+                dt_sql.setContent(content);
+                dt_sql.setTimee(timee);
+                dtlist.add(dt_sql);
+            }
+            cursor.close();
+        }
+        return dtlist;
+    }
+    //更新
+        public int updateByTitle(NoteData dt) {
+            SQLiteDatabase sd = getWritableDatabase();
+            ContentValues values = new ContentValues();
+            values.put("content", dt.getContent());
+            return sd.update(TABLE_NAME, values, "title like ?", new String[]{dt.getTitle()});
+        }
+        //删除  //调用delete语句
+    public int  deleteById(NoteData dt){
+        SQLiteDatabase sd = getWritableDatabase();
+        return sd.delete(TABLE_NAME,"title like ?",new String[]{dt.getTitle()});
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/db/NoteData.java

@@ -0,0 +1,57 @@
+package com.example.final_project_app.db;
+
+import java.io.Serializable;
+
+public class NoteData implements Serializable {
+    private String title;
+    private String content;
+    private String timee;
+    private String id;
+
+    public NoteData(String title, String content) {
+        this.title = title;
+        this.content = content;
+    }
+
+    public NoteData() {
+    }
+
+    public NoteData(String title, String content, String time, String id) {
+        this.title = title;
+        this.content = content;
+        this.timee = time;
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public String getTimee() {
+        return timee;
+    }
+
+    public void setTimee(String timee) {
+        this.timee = timee;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/db/PermissionUtiils.java

@@ -0,0 +1,27 @@
+package com.example.final_project_app.db;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.pm.PackageManager;
+
+import androidx.core.app.ActivityCompat;
+
+public class PermissionUtiils {
+//请求权限类
+    // Storage Permissions
+    private static final int REQUEST_EXTERNAL_STORAGE = 1;
+    private static String[] PERMISSIONS_STORAGE = {
+            Manifest.permission.READ_EXTERNAL_STORAGE,
+            Manifest.permission.WRITE_EXTERNAL_STORAGE};
+    public static void verifyStoragePermissions(Activity activity) {
+        // Check if we have write permission
+        int permission = ActivityCompat.checkSelfPermission(activity,
+                Manifest.permission.WRITE_EXTERNAL_STORAGE);
+
+        if (permission != PackageManager.PERMISSION_GRANTED) {
+            // We don't have permission so prompt the user
+            ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,
+                    REQUEST_EXTERNAL_STORAGE);
+        }
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/db/bannerBean.java

@@ -0,0 +1,17 @@
+package com.example.final_project_app.db;
+
+public class bannerBean {
+    public int picture;
+
+    public bannerBean(int picture) {
+        this.picture = picture;
+    }
+
+    public int getPicture() {
+        return picture;
+    }
+
+    public void setPicture(int picture) {
+        this.picture = picture;
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/entity/User.java

@@ -0,0 +1,84 @@
+package com.example.final_project_app.entity;
+public class User {
+
+    private int id;
+    private String userAccount;
+    private String userPassword;
+    private String userName;
+    private int userType;
+    private int userState;
+    private int userDel;
+
+
+    public User() {
+    }
+
+    public User(int id, String userAccount, String userPassword, String userName, int userType, int userState, int userDel) {
+        this.id = id;
+        this.userAccount = userAccount;
+        this.userPassword = userPassword;
+        this.userName = userName;
+        this.userType = userType;
+        this.userState = userState;
+        this.userDel = userDel;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getUserAccount() {
+        return userAccount;
+    }
+
+    public void setUserAccount(String userAccount) {
+        this.userAccount = userAccount;
+    }
+
+    public String getUserPassword() {
+        return userPassword;
+    }
+
+    public void setUserPassword(String userPassword) {
+        this.userPassword = userPassword;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    public int getUserType() {
+        return userType;
+    }
+
+    public void setUserType(int userType) {
+        this.userType = userType;
+    }
+
+    public int getUserState() {
+        return userState;
+    }
+
+    public void setUserState(int userState) {
+        this.userState = userState;
+    }
+
+    public int getUserDel() {
+        return userDel;
+    }
+
+    public void setUserDel(int userDel) {
+        this.userDel = userDel;
+    }
+}
+
+
+

Final_Project_app/app/src/main/java/com/example/final_project_app/login.java

@@ -0,0 +1,69 @@
+package com.example.final_project_app;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.final_project_app.dao.UserDao;
+
+/**
+ * function：连接页面加载首页
+ */
+public class login extends AppCompatActivity {
+    private static final String TAG = "mysql-myapplication-MainActivity";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_login);
+    }
+
+    public void reg(View view){
+        startActivity(new Intent(getApplicationContext(), register.class));
+    }
+
+
+    /**
+     * function: 登录
+     * */
+    public void login(View view){
+
+        EditText EditTextAccount = findViewById(R.id.uesrAccount);
+        EditText EditTextPassword = findViewById(R.id.userPassword);
+
+        new Thread(){
+            @Override
+            public void run() {
+                UserDao userDao = new UserDao();
+                int msg = userDao.login(EditTextAccount.getText().toString(),EditTextPassword.getText().toString());
+                hand1.sendEmptyMessage(msg);
+            }
+        }.start();
+
+    }
+
+    @SuppressLint("HandlerLeak")
+    final Handler hand1 = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            if (msg.what == 0){
+                Toast.makeText(getApplicationContext(), "登录失败", Toast.LENGTH_LONG).show();
+            } else if (msg.what == 1) {
+                Toast.makeText(getApplicationContext(), "登录成功", Toast.LENGTH_LONG).show();
+                startActivity(new Intent(login.this, MainActivity.class));
+                login.this.finish();
+            } else if (msg.what == 2){
+                Toast.makeText(getApplicationContext(), "密码错误", Toast.LENGTH_LONG).show();
+            } else if (msg.what == 3){
+                Toast.makeText(getApplicationContext(), "账号不存在", Toast.LENGTH_LONG).show();
+            }
+        }
+    };
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/register.java

@@ -0,0 +1,93 @@
+package com.example.final_project_app;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.final_project_app.dao.UserDao;
+import com.example.final_project_app.entity.User;
+
+/**
+ * function：连接注册页面
+ */
+public class register extends AppCompatActivity {
+    private static final String TAG = "mysql-myapplication-register";
+    EditText userAccount = null;
+    EditText userPassword = null;
+    EditText userName = null;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_regist);
+
+        userAccount = findViewById(R.id.userAccount);
+        userPassword = findViewById(R.id.userPassword);
+    }
+
+
+    public void register(View view){
+
+        String userAccount1 = userAccount.getText().toString();
+        String userPassword1 = userPassword.getText().toString();
+        String userName1 = userName.getText().toString();
+        User user = new User();
+
+        user.setUserAccount(userAccount1);
+        user.setUserPassword(userPassword1);
+        user.setUserName(userName1);
+        user.setUserType(1);
+        user.setUserState(0);
+        user.setUserDel(0);
+
+        new Thread(){
+            @Override
+            public void run() {
+
+                int msg = 0;
+
+                UserDao userDao = new UserDao();
+
+                User uu = userDao.findUser(user.getUserAccount());
+                if(uu != null){
+                    msg = 1;
+                }
+                else{
+                    boolean flag = userDao.register(user);
+                    if(flag){
+                        msg = 2;
+                    }
+                }
+                hand.sendEmptyMessage(msg);
+            }
+        }.start();
+
+    }
+    @SuppressLint("HandlerLeak")
+    final Handler hand = new Handler()
+    {
+        public void handleMessage(Message msg) {
+            if(msg.what == 0) {
+                Toast.makeText(getApplicationContext(),"注册失败",Toast.LENGTH_SHORT).show();
+            } else if(msg.what == 1) {
+                Toast.makeText(getApplicationContext(),"该账号已经存在，请换一个账号",Toast.LENGTH_SHORT).show();
+            } else if(msg.what == 2) {
+                Toast.makeText(getApplicationContext(), "注册成功", Toast.LENGTH_SHORT).show();
+                startActivity(new Intent(register.this, login.class));
+                register.this.finish();
+                Intent intent = new Intent();
+                //将想要传递的数据用putExtra封装在intent中
+                intent.putExtra("a","注册");
+                setResult(RESULT_CANCELED,intent);
+                finish();
+            }
+        }
+    };
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/sql/AddNoteActivity.java

@@ -0,0 +1,53 @@
+package com.example.final_project_app.sql;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.final_project_app.R;
+import com.example.final_project_app.db.NoteBook;
+import com.example.final_project_app.db.NoteData;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class AddNoteActivity extends AppCompatActivity {
+
+    private NoteBook nb;
+
+    private EditText et_content,et_title;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_add_note);
+        et_title= (EditText) findViewById(R.id.et_title);
+        et_content = (EditText) findViewById(R.id.et_content);
+    }
+
+    public void BtnAdd(View view) {
+        String title = et_title.getText().toString().trim();
+        String content = et_content.getText().toString().trim();
+
+        NoteData dt = new NoteData(title,content);
+        dt.setTimee(getSystemCurrentTime());
+
+        nb = new NoteBook(this);
+        long rowId = nb.insert(dt);
+        if (rowId!=-1) {
+            Toast.makeText(this, "添加成功", Toast.LENGTH_SHORT).show();
+            this.finish();
+        }else {
+            Toast.makeText(this, "添加失败", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private String getSystemCurrentTime() {
+        SimpleDateFormat sdf = new SimpleDateFormat("YYYY年MM月dd HH:mm:ss");
+        Date datetime = new Date();
+        return   sdf.format(datetime);
+    }
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/sql/UpdateNoteActivity.java

@@ -0,0 +1,63 @@
+package com.example.final_project_app.sql;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.example.final_project_app.R;
+import com.example.final_project_app.db.NoteBook;
+import com.example.final_project_app.db.NoteData;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class UpdateNoteActivity extends AppCompatActivity {
+
+    private EditText et_content,et_title;
+    private NoteData dt_up;
+    private NoteBook nb;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_update_note);
+        //获取控件
+        et_title= (EditText) findViewById(R.id.et_title);
+        et_content = (EditText) findViewById(R.id.et_content);
+        //数据接收
+        Intent intent = getIntent();
+        dt_up = (NoteData) intent.getSerializableExtra("data_sql");
+        if (dt_up!=null){
+            et_title.setText(dt_up.getTitle());
+            et_content.setText(dt_up.getContent());
+        }
+    }
+
+    public void BtnUpdate(View view) {
+        String title = et_title.getText().toString().trim();
+        String content = et_content.getText().toString().trim();
+
+        NoteData dt = new NoteData(title,content);
+        dt.setTimee(getSystemCurrentTime());
+
+        nb = new NoteBook(this);
+        nb.updateByTitle(dt);
+        int row = nb.updateByTitle(dt);
+        if (row>0){
+            Toast.makeText(this, "更新成功", Toast.LENGTH_SHORT).show();
+            this.finish();
+        }else {
+            Toast.makeText(this, "更新失败", Toast.LENGTH_SHORT).show();
+        }
+    }
+    private String getSystemCurrentTime() {
+        SimpleDateFormat sdf = new SimpleDateFormat("YYYY年MM月dd HH:mm:ss");
+        Date datetime = new Date();
+        return   sdf.format(datetime);
+    }
+
+}

Final_Project_app/app/src/main/java/com/example/final_project_app/utils/JDBCUtils.java

@@ -0,0 +1,35 @@
+package com.example.final_project_app.utils;
+import java.sql.Connection;
+import java.sql.DriverManager;
+
+/**
+ * function： 数据库工具类，连接数据库用
+ */
+public class JDBCUtils {
+    private static final String TAG = "mysql-myapplication-JDBCUtils";
+
+    private static String driver = "com.mysql.jdbc.Driver";// MySql驱动
+
+    private static String dbName = "android_ruanjian";// 数据库名称
+
+    private static String user = "root";// 用户名
+
+    private static String password = "root";// 密码
+
+    public static Connection getConn(){
+
+        Connection connection = null;
+        try{
+            Class.forName(driver);// 动态加载类
+            String ip = "192.168.16.81";// 写成本机地址，不能写成localhost，同时手机和电脑连接的网络必须是同一个
+
+            // 尝试建立到给定数据库URL的连接
+            connection = DriverManager.getConnection("jdbc:mysql://" + ip + ":3306/" + dbName,
+                    user, password);
+
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+        return connection;
+    }
+}

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

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

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

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

Final_Project_app/app/src/main/res/drawable/select_button_text.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <!--        按钮选中状态-->
+    <item android:state_checked="true" android:drawable="@drawable/shape_radiobutton"></item>
+    <!--        按钮未选中状态-->
+    <item android:state_checked="false" android:drawable="@drawable/shape_radiobutton2"></item>
+</selector>