README.md

@@ -1,2 +0,0 @@
-# test
-

src/dairy/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:name=".Mapp"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.App.NoActionBar"
+        tools:targetApi="31">
+
+        <activity
+            android:name=".ui.MainActivity"
+            android:configChanges="orientation|keyboardHidden|screenSize"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>

src/dairy/src/main/java/com/app/diary/Mapp.java

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+package com.app.diary;
+
+import android.app.Application;
+
+import androidx.annotation.NonNull;
+import androidx.room.Room;
+import androidx.room.migration.Migration;
+import androidx.sqlite.db.SupportSQLiteDatabase;
+
+import com.app.diary.data.DiaryDataSource;
+import com.app.diary.data.impl.DiaryDataSourceImpl;
+import com.app.diary.room.database.AppDatabase;
+
+public class Mapp extends Application {
+
+    private static Mapp instance;//单例
+
+    private AppDatabase appDatabase;//数据库
+    private DiaryDataSource diaryDataSource;//日记数据源
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        instance = this;
+    }
+
+    /**
+     * 获取实例
+     */
+    public static Mapp getInstance() {
+        return instance;
+    }
+
+    /**
+     * 懒加载获取数据库
+     */
+    public AppDatabase getAppDatabase() {
+        if (appDatabase == null) {
+            appDatabase = Room.databaseBuilder(getApplicationContext(), AppDatabase.class, "diary.db").addMigrations(new Migration(1, 2) {
+
+                @Override
+                public void migrate(@NonNull SupportSQLiteDatabase database) {
+                    // 将SQLite迁移到Room，数据结构未发生变化，所以这里不做任何处理，保持空实现
+                }
+
+            }).build();
+        }
+        return appDatabase;
+    }
+
+    /**
+     * 懒加载获取日记数据源
+     */
+    public DiaryDataSource getDiaryDataSource() {
+        if (diaryDataSource == null) {
+            diaryDataSource = new DiaryDataSourceImpl(getAppDatabase());
+        }
+        return diaryDataSource;
+    }
+
+}

src/dairy/src/main/java/com/app/diary/adapter/DiaryRecyclerAdapter.java

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+package com.app.diary.adapter;
+
+import android.annotation.SuppressLint;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.app.diary.R;
+import com.app.diary.bean.Diary;
+import com.app.diary.utils.TimeUtils;
+
+import java.text.SimpleDateFormat;
+import java.util.List;
+
+public class DiaryRecyclerAdapter extends RecyclerView.Adapter<DiaryRecyclerAdapter.DiaryViewHolder> {
+
+    private List<Diary> list;//日记本列表数据
+    private LayoutInflater inflater;//布局填充器
+
+    private OnItemClickListener onItemClickListener;//点击事件
+
+    @Override
+    public int getItemCount() {
+        return list == null ? 0 : list.size();
+    }
+
+    @NonNull
+    @Override
+    public DiaryViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        //布局填充器可以重复使用，所以这里使用懒加载的方式创建
+        if (inflater == null) {
+            inflater = LayoutInflater.from(parent.getContext());
+        }
+        View view = inflater.inflate(R.layout.item_recycler_diary, parent, false);
+        return new DiaryViewHolder(view);
+    }
+
+    @SuppressLint("RecyclerView")
+    @Override
+    public void onBindViewHolder(@NonNull DiaryViewHolder holder, int position) {
+        Diary diary = list.get(position);
+
+        holder.rowLinearLayout.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                if (onItemClickListener != null) {
+                    onItemClickListener.onItemClick(diary, position);
+                }
+            }
+
+        });
+        holder.dateTextView.setText(new SimpleDateFormat("yyyy年MM月dd日").format(diary.getDate()));
+        holder.weatherTextView.setText(diary.getWeather());
+        holder.titleTextView.setText(diary.getTitle());
+        holder.wordCountTextView.setText("字数" + diary.getContent().length() + "个");
+        holder.updateTimeTextView.setText("编辑于" + TimeUtils.getSimpleTime(diary.getUpdateTime().getTime()));
+    }
+
+    /**
+     * 设置新数据
+     */
+    public void setNewData(@Nullable List<Diary> list) {
+        this.list = list;
+        notifyDataSetChanged();
+    }
+
+    /**
+     * 设置单个日记的点击事件
+     */
+    public void setOnItemClickListener(@Nullable OnItemClickListener listener) {
+        this.onItemClickListener = listener;
+    }
+
+    /**
+     * 视图固定器
+     */
+    public class DiaryViewHolder extends RecyclerView.ViewHolder {
+
+        LinearLayout rowLinearLayout;//行布局控件
+        TextView dateTextView;//日记时间文本控件
+        TextView weatherTextView;//天气文本控件
+        TextView titleTextView;//标题文本控件
+        TextView wordCountTextView;//字数文本控件
+        TextView updateTimeTextView;//修改时间文本控件
+
+        public DiaryViewHolder(@NonNull View itemView) {
+            super(itemView);
+            rowLinearLayout = itemView.findViewById(R.id.row_linearLayout);
+            dateTextView = itemView.findViewById(R.id.date_textView);
+            weatherTextView = itemView.findViewById(R.id.weather_textView);
+            titleTextView = itemView.findViewById(R.id.title_textView);
+            wordCountTextView = itemView.findViewById(R.id.wordCount_textView);
+            updateTimeTextView = itemView.findViewById(R.id.updateTime_textView);
+        }
+
+    }
+
+    /**
+     * 日记的点击事件
+     */
+    public interface OnItemClickListener {
+
+        void onItemClick(Diary diary, int position);
+
+    }
+
+}

src/dairy/src/main/java/com/app/diary/bean/BaseBean.java

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+package com.app.diary.bean;
+
+import java.io.Serializable;
+
+/**
+ * 数据的基础类
+ */
+public class BaseBean implements Serializable {
+}

src/dairy/src/main/java/com/app/diary/bean/Constant.java

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+package com.app.diary.bean;
+
+public class Constant {
+
+    public static String DATA_CHANGE = "data_change";//数据是否改变
+
+}

src/dairy/src/main/java/com/app/diary/bean/Diary.java

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+package com.app.diary.bean;
+
+import androidx.annotation.NonNull;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.room.PrimaryKey;
+
+import java.util.Date;
+
+/**
+ * 日记
+ */
+@Entity(tableName = "diary")
+public class Diary extends BaseBean {
+
+    @NonNull
+    @PrimaryKey(autoGenerate = true)
+    private Long id;//主键
+
+    @NonNull
+    private Date date;//日期
+
+    @NonNull
+    private String weather;//天气
+
+    @NonNull
+    private String title;//标题
+
+    @NonNull
+    private String content;//内容
+
+    @NonNull
+    @ColumnInfo(name = "create_time")
+    private Date createTime;//创建时间
+
+    @NonNull
+    @ColumnInfo(name = "update_time")
+    private Date updateTime;//修改时间
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public String getWeather() {
+        return weather;
+    }
+
+    public void setWeather(String weather) {
+        this.weather = weather;
+    }
+
+    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 Date getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+
+    public Date getUpdateTime() {
+        return updateTime;
+    }
+
+    public void setUpdateTime(Date updateTime) {
+        this.updateTime = updateTime;
+    }
+
+}

src/dairy/src/main/java/com/app/diary/data/DiaryDataSource.java

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+package com.app.diary.data;
+
+import androidx.annotation.NonNull;
+
+import com.app.diary.bean.Diary;
+
+import java.util.List;
+
+import io.reactivex.rxjava3.core.Completable;
+import io.reactivex.rxjava3.core.Single;
+
+/**
+ * 日记本数据源
+ */
+public interface DiaryDataSource {
+
+    /**
+     * 新增一条日记本
+     */
+    Completable insertDiary(@NonNull Diary diary);
+
+    /**
+     * 删除一条日记本
+     */
+    Completable deleteDiary(long diaryId);
+
+    /**
+     * 修改一条日记本
+     */
+    Completable updateDiary(@NonNull Diary diary);
+
+    /**
+     * 根据主键查询日记本
+     */
+    Single<Diary> selectOne(long diaryId);
+
+    /**
+     * 查找日记本列表
+     */
+    Single<List<Diary>> selectList();
+
+}

src/dairy/src/main/java/com/app/diary/data/impl/DiaryDataSourceImpl.java

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+package com.app.diary.data.impl;
+
+import androidx.annotation.NonNull;
+
+import com.app.diary.bean.Diary;
+import com.app.diary.data.DiaryDataSource;
+import com.app.diary.room.database.AppDatabase;
+
+import java.util.Date;
+import java.util.List;
+
+import io.reactivex.rxjava3.core.Completable;
+import io.reactivex.rxjava3.core.Single;
+
+/**
+ * 日志数据源的实现类
+ */
+public class DiaryDataSourceImpl implements DiaryDataSource {
+
+    @NonNull
+    private AppDatabase appDatabase;
+
+    public DiaryDataSourceImpl(@NonNull AppDatabase appDatabase) {
+        this.appDatabase = appDatabase;
+    }
+
+    @Override
+    public Completable insertDiary(@NonNull Diary diary) {
+        Date now = new Date();
+        diary.setCreateTime(now);
+        diary.setUpdateTime(now);
+        return appDatabase.diaryDao().insert(diary);
+    }
+
+    @Override
+    public Completable deleteDiary(long diaryId) {
+        Diary diary = new Diary();
+        diary.setId(diaryId);
+        return appDatabase.diaryDao().delete(diary);
+    }
+
+    @Override
+    public Completable updateDiary(@NonNull Diary diary) {
+        diary.setUpdateTime(new Date());
+        return appDatabase.diaryDao().update(diary);
+    }
+
+    @Override
+    public Single<Diary> selectOne(long diaryId) {
+        return appDatabase.diaryDao().getOne(diaryId);
+    }
+
+    @Override
+    public Single<List<Diary>> selectList() {
+        return appDatabase.diaryDao().getList();
+    }
+
+}

src/dairy/src/main/java/com/app/diary/room/converter/DateConverter.java

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+package com.app.diary.room.converter;
+
+import androidx.room.TypeConverter;
+
+import java.util.Date;
+
+public class DateConverter {
+
+    @TypeConverter
+    public static Date timestampToDate(Long timestamp) {
+        return timestamp == null ? null : new Date(timestamp);
+    }
+
+    @TypeConverter
+    public static Long dateToTimestamp(Date date) {
+        return date == null ? null : date.getTime();
+    }
+
+}

src/dairy/src/main/java/com/app/diary/room/dao/DiaryDao.java

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+package com.app.diary.room.dao;
+
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.Query;
+import androidx.room.Update;
+
+import com.app.diary.bean.Diary;
+
+import java.util.List;
+
+import io.reactivex.rxjava3.core.Completable;
+import io.reactivex.rxjava3.core.Single;
+
+@Dao
+public interface DiaryDao {
+
+    /**
+     * 新增日记
+     */
+    @Insert
+    Completable insert(Diary diary);
+
+    /**
+     * 删除日记
+     */
+    @Delete
+    Completable delete(Diary diary);
+
+    /**
+     * 修改日记
+     */
+    @Update
+    Completable update(Diary diary);
+
+    /**
+     * 获取日记列表
+     */
+    @Query("SELECT * FROM diary ORDER BY date DESC")
+    Single<List<Diary>> getList();
+
+    /**
+     * 获取日记详情
+     */
+    @Query("SELECT * FROM diary WHERE id = (:diaryId)")
+    Single<Diary> getOne(long diaryId);
+
+}

src/dairy/src/main/java/com/app/diary/room/database/AppDatabase.java

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+package com.app.diary.room.database;
+
+import androidx.room.Database;
+import androidx.room.RoomDatabase;
+import androidx.room.TypeConverters;
+
+import com.app.diary.bean.Diary;
+import com.app.diary.room.converter.DateConverter;
+import com.app.diary.room.dao.DiaryDao;
+
+@Database(entities = {Diary.class}, version = 2)
+@TypeConverters({DateConverter.class})
+public abstract class AppDatabase extends RoomDatabase {
+
+    public abstract DiaryDao diaryDao();
+
+}

src/dairy/src/main/java/com/app/diary/ui/BaseActivity.java

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+package com.app.diary.ui;
+
+import android.view.MenuItem;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.navigation.ActivityNavigator;
+
+/**
+ * 页面的基础类
+ */
+public class BaseActivity extends AppCompatActivity {
+
+    /**
+     * 设置菜单点击
+     */
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        //设置标题栏的返回键点击事件
+        if (item.getItemId() == android.R.id.home) {
+            //页面返回
+            getOnBackPressedDispatcher().onBackPressed();
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    @Override
+    public void finish() {
+        super.finish();
+        ActivityNavigator.applyPopAnimationsToPendingTransition(this);
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/BaseFragment.java

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+package com.app.diary.ui;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.fragment.app.Fragment;
+import androidx.navigation.NavController;
+import androidx.navigation.fragment.NavHostFragment;
+
+/**
+ * Fragment的基础类
+ */
+public class BaseFragment extends Fragment {
+
+    /**
+     * 获取导航控制器
+     */
+    protected NavController getNavController() {
+        return NavHostFragment.findNavController(this);
+    }
+
+    /**
+     * 初始化标题栏
+     *
+     * @param toolbar  标题栏
+     * @param showBack 是否显示返回键
+     */
+    protected void initSupportActionBar(@NonNull Toolbar toolbar, boolean showBack) {
+        if (getActivity() != null && (getActivity() instanceof AppCompatActivity)) {
+            if (toolbar.getTitle() == null) {
+                toolbar.setTitle("");
+            }
+            ((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
+            ((AppCompatActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(showBack);
+        }
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/BaseViewModel.java

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+package com.app.diary.ui;
+
+import android.app.Application;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.AndroidViewModel;
+
+import io.reactivex.rxjava3.disposables.CompositeDisposable;
+import io.reactivex.rxjava3.disposables.Disposable;
+
+public class BaseViewModel extends AndroidViewModel {
+
+    protected boolean loaded;//是否已加载过数据
+    private CompositeDisposable compositeDisposable;
+
+    public BaseViewModel(@NonNull Application application) {
+        super(application);
+    }
+
+    public void addDisposable(@NonNull Disposable disposable) {
+        if (compositeDisposable == null) {
+            compositeDisposable = new CompositeDisposable();
+        }
+        compositeDisposable.add(disposable);
+    }
+
+    @Override
+    protected void onCleared() {
+        super.onCleared();
+        if (compositeDisposable != null) {
+            compositeDisposable.clear();
+        }
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/DiaryBrowseFragment.java

@@ -0,0 +1,187 @@
+package com.app.diary.ui;
+
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.view.MenuProvider;
+import androidx.core.widget.NestedScrollView;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.SavedStateHandle;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.NavBackStackEntry;
+
+import com.app.diary.R;
+import com.app.diary.bean.Constant;
+import com.app.diary.bean.Diary;
+
+import java.text.SimpleDateFormat;
+
+/**
+ * 日志浏览
+ */
+public class DiaryBrowseFragment extends BaseFragment {
+
+    private Toolbar toolbar;//标题栏控件
+    private NestedScrollView scrollView;//滑动控件
+    private TextView dateTextView;//日期文本控件
+    private TextView weekTextView;//星期文本控件
+    private TextView weatherTextView;//天气文本控件
+    private TextView titleTextView;//标题文本控件
+    private TextView contentTextView;//内容文本控件
+    private TextView errorTextView;//错误文本控件
+
+    private long diaryId;//日记主键
+    private DiaryBrowseViewModel diaryBrowseViewModel;
+    private SavedStateHandle savedStateHandle;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        NavBackStackEntry navBackStackEntry = getNavController().getCurrentBackStackEntry();
+        navBackStackEntry.getSavedStateHandle().getLiveData(Constant.DATA_CHANGE).observe(navBackStackEntry, new Observer<Object>() {
+
+            @Override
+            public void onChanged(Object dataChanged) {
+                if ((boolean) dataChanged) {
+                    if (savedStateHandle != null) {
+                        savedStateHandle.set(Constant.DATA_CHANGE, true);
+                    }
+                    if (diaryBrowseViewModel != null) {
+                        diaryBrowseViewModel.loadData(diaryId, false);
+                    }
+                }
+            }
+
+        });
+
+        initData();
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_diary_browse, container, false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        diaryBrowseViewModel = new ViewModelProvider(this).get(DiaryBrowseViewModel.class);
+        savedStateHandle = getNavController().getPreviousBackStackEntry().getSavedStateHandle();
+        initView(view);
+        setView();
+        diaryBrowseViewModel.loadData(diaryId, true);
+    }
+
+    /**
+     * 初始化数据
+     */
+    private void initData() {
+        diaryId = DiaryBrowseFragmentArgs.fromBundle(getArguments()).getDiaryId();
+    }
+
+    /**
+     * 初始化控件
+     */
+    private void initView(@NonNull View view) {
+        toolbar = view.findViewById(R.id.toolbar);
+        scrollView = view.findViewById(R.id.scrollView);
+        dateTextView = view.findViewById(R.id.date_textView);
+        weekTextView = view.findViewById(R.id.week_textView);
+        weatherTextView = view.findViewById(R.id.weather_textView);
+        titleTextView = view.findViewById(R.id.title_textView);
+        contentTextView = view.findViewById(R.id.content_textView);
+        errorTextView = view.findViewById(R.id.error_textView);
+    }
+
+    /**
+     * 设置控件
+     */
+    private void setView() {
+        //将标题栏关联到页面
+        initSupportActionBar(toolbar, true);
+
+        //设置菜单
+        requireActivity().addMenuProvider(new MenuProvider() {
+
+            @Override
+            public void onCreateMenu(@NonNull Menu menu, @NonNull MenuInflater menuInflater) {
+                menuInflater.inflate(R.menu.menu_diary_browse, menu);
+            }
+
+            @Override
+            public boolean onMenuItemSelected(@NonNull MenuItem menuItem) {
+                if (menuItem.getItemId() == R.id.action_update) {//跳转到日记编辑页面
+                    getNavController().navigate(DiaryBrowseFragmentDirections.diaryEditAction(diaryId));
+
+                } else if (menuItem.getItemId() == R.id.action_delete) {//弹窗提示是否删除日记
+                    //弹窗提示是否删除日记
+                    new AlertDialog.Builder(getContext()).setTitle("提示").setMessage("确定要删除日记吗?").setPositiveButton("确定", new DialogInterface.OnClickListener() {
+
+                        @Override
+                        public void onClick(DialogInterface dialog, int which) {
+                            diaryBrowseViewModel.deleteDiary(diaryId).observe(getViewLifecycleOwner(), new Observer<Boolean>() {
+
+                                @Override
+                                public void onChanged(Boolean success) {
+                                    if (success) {
+                                        savedStateHandle.set(Constant.DATA_CHANGE, true);
+                                        getNavController().navigateUp();
+                                    }
+                                }
+
+                            });
+                        }
+
+                    }).setNegativeButton("取消", null).create().show();
+                }
+                return false;
+            }
+
+        }, getViewLifecycleOwner());
+
+        //观察日记数据并设置日记控件
+        diaryBrowseViewModel.getDiaryLiveData().observe(getViewLifecycleOwner(), new Observer<Diary>() {
+
+            @Override
+            public void onChanged(Diary diary) {
+                setDiaryView(diary);
+            }
+
+        });
+    }
+
+    /**
+     * 设置日记控件
+     */
+    private void setDiaryView(@Nullable Diary diary) {
+        if (diary == null) {
+            errorTextView.setText("未找到该日记");
+            errorTextView.setVisibility(View.VISIBLE);
+            scrollView.setVisibility(View.GONE);
+
+        } else {
+            errorTextView.setVisibility(View.GONE);
+            scrollView.setVisibility(View.VISIBLE);
+            dateTextView.setText(new SimpleDateFormat("yyyy年MM月dd日").format(diary.getDate()));
+            weekTextView.setText(new SimpleDateFormat("EEEE").format(diary.getDate()));
+            weatherTextView.setText(diary.getWeather());
+            titleTextView.setText(diary.getTitle());
+            //处理内容格式，开头空两格，换行空两格
+            String content = "\t\t\t\t" + diary.getContent().replace("\n", "\n\t\t\t\t");
+            contentTextView.setText(content);
+        }
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/DiaryBrowseViewModel.java

@@ -0,0 +1,86 @@
+package com.app.diary.ui;
+
+import android.app.Application;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import com.app.diary.Mapp;
+import com.app.diary.bean.Diary;
+import com.app.diary.data.DiaryDataSource;
+import com.app.diary.utils.ToastUtils;
+import com.app.diary.utils.rxjava.CompletableObserverUtils;
+import com.app.diary.utils.rxjava.SingleObserverUtils;
+
+import androidx.annotation.NonNull;
+
+import io.reactivex.rxjava3.observers.DisposableCompletableObserver;
+import io.reactivex.rxjava3.observers.DisposableSingleObserver;
+
+public class DiaryBrowseViewModel extends BaseViewModel {
+
+    private MutableLiveData<Diary> diaryLiveData = new MutableLiveData<>();//日记的数据容器
+
+    private DiaryDataSource diaryDataSource;//日记数据来源
+
+    public DiaryBrowseViewModel(@NonNull Application application) {
+        super(application);
+        diaryDataSource = ((Mapp) application).getDiaryDataSource();
+    }
+
+    /**
+     * 删除日记
+     */
+    public LiveData<Boolean> deleteDiary(long diaryId) {
+        MutableLiveData<Boolean> liveData = new MutableLiveData<>();
+        diaryDataSource.deleteDiary(diaryId).compose(CompletableObserverUtils.applyUIScheduler(this)).subscribe(new DisposableCompletableObserver() {
+
+            @Override
+            public void onComplete() {
+                ToastUtils.showShort("删除成功");
+                liveData.setValue(true);
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                ToastUtils.showShort("删除失败, 原因:" + e.getMessage());
+                liveData.setValue(false);
+            }
+
+        });
+        return liveData;
+    }
+
+    /**
+     * 获取日记的数据容器
+     */
+    public LiveData<Diary> getDiaryLiveData() {
+        return diaryLiveData;
+    }
+
+    /**
+     * 加载数据
+     */
+    public void loadData(long diaryId, boolean lazy) {
+        if (lazy && loaded) {
+            return;
+        }
+        loaded = true;
+
+        diaryDataSource.selectOne(diaryId).compose(SingleObserverUtils.applyUIScheduler(this)).subscribe(new DisposableSingleObserver<Diary>() {
+
+            @Override
+            public void onSuccess(@NonNull Diary diary) {
+                diaryLiveData.setValue(diary);
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                ToastUtils.showShort("获取失败, 原因:" + e.getMessage());
+                diaryLiveData.setValue(null);
+            }
+
+        });
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/DiaryEditFragment.java

@@ -0,0 +1,315 @@
+package com.app.diary.ui;
+
+import android.app.DatePickerDialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.DatePicker;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.view.MenuProvider;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.SavedStateHandle;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.app.diary.R;
+import com.app.diary.bean.Constant;
+import com.app.diary.bean.Diary;
+import com.app.diary.utils.ToastUtils;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+
+/**
+ * 编辑日志
+ */
+public class DiaryEditFragment extends BaseFragment {
+
+    private static final String[] WEATHERS = new String[]{"晴天", "雨天", "雪天"};
+
+    private Toolbar toolbar;//标题栏控件
+    private TextView dateTextView;//日期文本控件
+    private TextView weatherTextView;//天气文本控件
+    private EditText titleEditText;//标题输入框控件
+    private EditText contentEditText;//内容输入框控件
+
+    private DatePickerDialog datePickerDialog;//日期选择对话框
+    private AlertDialog weatherPickerDialog;//天气选择对话框
+
+    private long diaryId;//日记主键
+    private DiaryEditViewModel diaryEditViewModel;
+    private SavedStateHandle savedStateHandle;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        initData();
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_diary_edit, container, false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        diaryEditViewModel = new ViewModelProvider(this).get(DiaryEditViewModel.class);
+        savedStateHandle = getNavController().getPreviousBackStackEntry().getSavedStateHandle();
+        initView(view);
+        setView();
+        if (diaryId > 0) {
+            diaryEditViewModel.loadData(diaryId, true);
+        }
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        //在页面销毁前，关闭日期选择对话框，防止对话框未关闭报错
+        if (datePickerDialog != null && datePickerDialog.isShowing()) {
+            datePickerDialog.dismiss();
+        }
+        if (weatherPickerDialog != null && weatherPickerDialog.isShowing()) {
+            weatherPickerDialog.dismiss();
+        }
+    }
+
+    /**
+     * 初始化数据
+     */
+    private void initData() {
+        diaryId = DiaryEditFragmentArgs.fromBundle(getArguments()).getDiaryId();
+    }
+
+    /**
+     * 初始化控件
+     */
+    private void initView(@NonNull View view) {
+        toolbar = view.findViewById(R.id.toolbar);
+        dateTextView = view.findViewById(R.id.date_textView);
+        weatherTextView = view.findViewById(R.id.weather_textView);
+        titleEditText = view.findViewById(R.id.title_editText);
+        contentEditText = view.findViewById(R.id.content_editText);
+    }
+
+    /**
+     * 设置控件
+     */
+    private void setView() {
+        //将标题栏关联到页面
+        initSupportActionBar(toolbar, true);
+
+        //添加菜单
+        requireActivity().addMenuProvider(new MenuProvider() {
+
+            @Override
+            public void onCreateMenu(@NonNull Menu menu, @NonNull MenuInflater menuInflater) {
+                menuInflater.inflate(R.menu.menu_diary_create, menu);
+            }
+
+            @Override
+            public boolean onMenuItemSelected(@NonNull MenuItem menuItem) {
+                if (menuItem.getItemId() == R.id.action_save) {//保存日记
+                    saveDiary();
+                }
+                return false;
+            }
+
+        }, getViewLifecycleOwner());
+
+        //设置日期文本的点击事件
+        dateTextView.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                showDatePickerDialog();
+            }
+
+        });
+        //设置天气文本的点击事件
+        weatherTextView.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                showWeatherPickerDialog();
+            }
+
+        });
+
+        if (diaryId > 0) {//修改日记
+            diaryEditViewModel.getDiaryLiveData().observe(getViewLifecycleOwner(), new Observer<Diary>() {
+
+                @Override
+                public void onChanged(Diary diary) {
+                    if (diary == null) {
+                        ToastUtils.showShort("未找到该日记");
+                        getNavController().navigateUp();
+
+                    } else {
+                        //设置该日记数据
+                        toolbar.setTitle("修改日记");
+                        dateTextView.setText(new SimpleDateFormat("yyyy年MM月dd日").format(diary.getDate()));
+                        weatherTextView.setText(diary.getWeather());
+                        titleEditText.setText(diary.getTitle());
+                        contentEditText.setText(diary.getContent());
+                    }
+                }
+
+            });
+
+        } else {//创建日记
+            //设置默认值
+            toolbar.setTitle("创建日记");
+            dateTextView.setText(new SimpleDateFormat("yyyy年MM月dd日").format(new Date()));
+            weatherTextView.setText(WEATHERS[0]);
+        }
+    }
+
+    /**
+     * 显示日期选择对话框
+     */
+    private void showDatePickerDialog() {
+        //懒加载创建日期选择对话框，取当前日期为默认日期
+        if (datePickerDialog == null) {
+            Calendar calendar = Calendar.getInstance();
+            try {
+                String dateStr = dateTextView.getText().toString().trim();
+                Date date = new SimpleDateFormat("yyyy年MM月dd日").parse(dateStr);
+                calendar.setTime(date);
+            } catch (ParseException e) {
+            }
+            int year = calendar.get(Calendar.YEAR);
+            int month = calendar.get(Calendar.MONTH);
+            int day = calendar.get(Calendar.DAY_OF_MONTH);
+
+            datePickerDialog = new DatePickerDialog(getContext(), new DatePickerDialog.OnDateSetListener() {
+
+                @Override
+                public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
+                    //将选择的年月日组合成文字，显示在日期文本上
+                    Date date = getDate(year, monthOfYear, dayOfMonth);
+                    String dateStr = new SimpleDateFormat("yyyy年MM月dd日").format(date);
+                    dateTextView.setText(dateStr);
+                }
+
+            }, year, month, day);
+        }
+        if (!datePickerDialog.isShowing()) {
+            datePickerDialog.show();
+        }
+    }
+
+    /**
+     * 显示天气选择对话框
+     */
+    private void showWeatherPickerDialog() {
+        if (weatherPickerDialog == null) {
+            String weather = weatherTextView.getText().toString().trim();
+            int position = Arrays.asList(WEATHERS).indexOf(weather);
+            if (position < 0) {
+                position = 0;
+            }
+            weatherPickerDialog = new AlertDialog.Builder(getContext()).setTitle("选择天气").setSingleChoiceItems(WEATHERS, position, new DialogInterface.OnClickListener() {
+
+                @Override
+                public void onClick(DialogInterface dialog, int which) {
+                    weatherTextView.setText(WEATHERS[which]);
+                    dialog.dismiss();
+                }
+
+            }).create();
+        }
+        if (!weatherPickerDialog.isShowing()) {
+            weatherPickerDialog.show();
+        }
+    }
+
+    /**
+     * 根据年月日获取日期函数
+     */
+    private Date getDate(int year, int monthOfYear, int dayOfMonth) {
+        Calendar calendar = Calendar.getInstance();
+        calendar.set(Calendar.YEAR, year);
+        calendar.set(Calendar.MONTH, monthOfYear);
+        calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
+        return calendar.getTime();
+    }
+
+    /**
+     * 保存日记
+     */
+    private void saveDiary() {
+        //检查输入情况
+        String date = dateTextView.getText().toString().trim();
+        if (date.isEmpty()) {
+            ToastUtils.showShort("未选择日期");
+            return;
+        }
+        String weather = weatherTextView.getText().toString().trim();
+        if (weather.isEmpty()) {
+            ToastUtils.showShort("未选择天气");
+            return;
+        }
+        String title = titleEditText.getText().toString().trim();
+        if (title.isEmpty()) {
+            ToastUtils.showShort("未输入标题");
+            return;
+        }
+        String content = contentEditText.getText().toString().trim();
+        if (content.isEmpty()) {
+            ToastUtils.showShort("未输入内容");
+            return;
+        }
+
+        Date diaryDate;
+        try {
+            diaryDate = new SimpleDateFormat("yyyy年MM月dd日").parse(date);
+        } catch (ParseException e) {
+            ToastUtils.showShort("保存失败，时间转换错误");
+            return;
+        }
+
+        if (diaryId > 0) {//修改日记
+            diaryEditViewModel.updateDiary(diaryId, diaryDate, weather, title, content).observe(getViewLifecycleOwner(), new Observer<Boolean>() {
+
+                @Override
+                public void onChanged(Boolean success) {
+                    if (success) {
+                        savedStateHandle.set(Constant.DATA_CHANGE, true);
+                        getNavController().navigateUp();
+                    }
+                }
+
+            });
+
+        } else {//创建日记
+            diaryEditViewModel.insertDiary(diaryDate, weather, title, content).observe(getViewLifecycleOwner(), new Observer<Boolean>() {
+
+                @Override
+                public void onChanged(Boolean success) {
+                    if (success) {
+                        savedStateHandle.set(Constant.DATA_CHANGE, true);
+                        getNavController().navigateUp();
+                    }
+                }
+
+            });
+        }
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/DiaryEditViewModel.java

@@ -0,0 +1,145 @@
+package com.app.diary.ui;
+
+import android.app.Application;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import com.app.diary.Mapp;
+import com.app.diary.bean.Diary;
+import com.app.diary.data.DiaryDataSource;
+import com.app.diary.utils.ToastUtils;
+import com.app.diary.utils.rxjava.CompletableObserverUtils;
+import com.app.diary.utils.rxjava.SingleObserverUtils;
+
+import java.util.Date;
+
+import io.reactivex.rxjava3.core.CompletableSource;
+import io.reactivex.rxjava3.core.Single;
+import io.reactivex.rxjava3.core.SingleEmitter;
+import io.reactivex.rxjava3.core.SingleOnSubscribe;
+import io.reactivex.rxjava3.functions.Function;
+import io.reactivex.rxjava3.observers.DisposableCompletableObserver;
+import io.reactivex.rxjava3.observers.DisposableSingleObserver;
+
+public class DiaryEditViewModel extends BaseViewModel {
+
+    private MutableLiveData<Diary> diaryLiveData = new MutableLiveData<>();//日记的数据容器
+
+    private DiaryDataSource diaryDataSource;//日记数据来源
+
+    public DiaryEditViewModel(@NonNull Application application) {
+        super(application);
+        diaryDataSource = ((Mapp) application).getDiaryDataSource();
+    }
+
+    /**
+     * 获取日记的数据容器
+     */
+    public LiveData<Diary> getDiaryLiveData() {
+        return diaryLiveData;
+    }
+
+    /**
+     * 加载数据
+     */
+    public void loadData(long diaryId, boolean lazy) {
+        if (lazy && loaded) {
+            return;
+        }
+        loaded = true;
+
+        diaryDataSource.selectOne(diaryId).compose(SingleObserverUtils.applyUIScheduler(this)).subscribe(new DisposableSingleObserver<Diary>() {
+
+            @Override
+            public void onSuccess(Diary diary) {
+                diaryLiveData.setValue(diary);
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                ToastUtils.showShort("获取失败, 原因:" + e.getMessage());
+                diaryLiveData.setValue(null);
+            }
+
+        });
+    }
+
+    /**
+     * 新增日记
+     */
+    public LiveData<Boolean> insertDiary(Date date, String weather, String title, String content) {
+        MutableLiveData<Boolean> liveData = new MutableLiveData<>();
+        Single.create(new SingleOnSubscribe<Diary>() {
+
+            @Override
+            public void subscribe(@NonNull SingleEmitter<Diary> emitter) throws Throwable {
+                Diary diary = new Diary();
+                diary.setDate(date);
+                diary.setWeather(weather);
+                diary.setTitle(title);
+                diary.setContent(content);
+                emitter.onSuccess(diary);
+            }
+
+        }).flatMapCompletable(new Function<Diary, CompletableSource>() {
+
+            @Override
+            public CompletableSource apply(Diary diary) throws Throwable {
+                return diaryDataSource.insertDiary(diary);
+            }
+
+        }).compose(CompletableObserverUtils.applyUIScheduler(this)).subscribe(new DisposableCompletableObserver() {
+
+            @Override
+            public void onComplete() {
+                ToastUtils.showShort("新增成功");
+                liveData.setValue(true);
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                ToastUtils.showShort("新增失败, 原因:" + e.getMessage());
+                liveData.setValue(false);
+            }
+
+        });
+        return liveData;
+    }
+
+    /**
+     * 修改日记
+     */
+    public LiveData<Boolean> updateDiary(long diaryId, Date date, String weather, String title, String content) {
+        MutableLiveData<Boolean> liveData = new MutableLiveData<>();
+        diaryDataSource.selectOne(diaryId).flatMapCompletable(new Function<Diary, CompletableSource>() {
+
+            @Override
+            public CompletableSource apply(Diary diary) throws Throwable {
+                diary.setDate(date);
+                diary.setWeather(weather);
+                diary.setTitle(title);
+                diary.setContent(content);
+                return diaryDataSource.updateDiary(diary);
+            }
+
+        }).compose(CompletableObserverUtils.applyUIScheduler(this)).subscribe(new DisposableCompletableObserver() {
+
+            @Override
+            public void onComplete() {
+                ToastUtils.showShort("修改成功");
+                liveData.setValue(true);
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                ToastUtils.showShort("修改失败, 原因:" + e.getMessage());
+                liveData.setValue(false);
+            }
+
+        });
+        return liveData;
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/DiaryListFragment.java

@@ -0,0 +1,125 @@
+package com.app.diary.ui;
+
+import android.graphics.Rect;
+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.appcompat.widget.Toolbar;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.NavBackStackEntry;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.app.diary.R;
+import com.app.diary.adapter.DiaryRecyclerAdapter;
+import com.app.diary.bean.Constant;
+import com.app.diary.bean.Diary;
+import com.app.diary.utils.SizeUtils;
+
+import java.util.List;
+
+/**
+ * 日志列表
+ */
+public class DiaryListFragment extends BaseFragment {
+
+    private Toolbar toolbar;//标题栏控件
+    private RecyclerView recyclerView;//列表控件
+
+    private DiaryRecyclerAdapter diaryRecyclerAdapter;
+    private DiaryListViewModel diaryListViewModel;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        NavBackStackEntry navBackStackEntry = getNavController().getCurrentBackStackEntry();
+        navBackStackEntry.getSavedStateHandle().getLiveData(Constant.DATA_CHANGE).observe(navBackStackEntry, new Observer<Object>() {
+
+            @Override
+            public void onChanged(Object dataChanged) {
+                if ((boolean) dataChanged) {
+                    if (diaryListViewModel != null) {
+                        diaryListViewModel.loadData(false);
+                    }
+                }
+            }
+
+        });
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_diary_list, container, false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        diaryListViewModel = new ViewModelProvider(this).get(DiaryListViewModel.class);
+        initView(view);
+        setView();
+        diaryListViewModel.loadData(true);
+    }
+
+    /**
+     * 初始化控件
+     */
+    private void initView(@NonNull View view) {
+        toolbar = view.findViewById(R.id.toolbar);
+        recyclerView = view.findViewById(R.id.recyclerView);
+    }
+
+    /**
+     * 设置控件
+     */
+    private void setView() {
+        //将标题栏关联到页面
+        initSupportActionBar(toolbar, true);
+
+        //设置列表的布局样式
+        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false);
+        recyclerView.setLayoutManager(linearLayoutManager);
+        //设置列表的间隔距离
+        recyclerView.addItemDecoration(new RecyclerView.ItemDecoration() {
+
+            @Override
+            public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
+                super.getItemOffsets(outRect, view, parent, state);
+                int count = parent.getAdapter().getItemCount();
+                int index = parent.getChildAdapterPosition(view);
+                if (index < count - 1) {
+                    outRect.set(0, 0, 0, SizeUtils.dp2px(30));
+                }
+            }
+
+        });
+        //设置列表的适配器
+        diaryRecyclerAdapter = new DiaryRecyclerAdapter();
+        diaryRecyclerAdapter.setOnItemClickListener(new DiaryRecyclerAdapter.OnItemClickListener() {
+
+            @Override
+            public void onItemClick(Diary diary, int position) {
+                getNavController().navigate(DiaryListFragmentDirections.diaryBrowseAction(diary.getId()));
+            }
+
+        });
+        recyclerView.setAdapter(diaryRecyclerAdapter);
+
+        //观察日记列表数据并将数据加入适配器
+        diaryListViewModel.getDiaryListLiveData().observe(getViewLifecycleOwner(), new Observer<List<Diary>>() {
+
+            @Override
+            public void onChanged(List<Diary> list) {
+                diaryRecyclerAdapter.setNewData(list);
+            }
+
+        });
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/DiaryListViewModel.java

@@ -0,0 +1,62 @@
+package com.app.diary.ui;
+
+import android.app.Application;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import com.app.diary.Mapp;
+import com.app.diary.bean.Diary;
+import com.app.diary.data.DiaryDataSource;
+import com.app.diary.utils.ToastUtils;
+import com.app.diary.utils.rxjava.SingleObserverUtils;
+
+import java.util.List;
+
+import io.reactivex.rxjava3.annotations.NonNull;
+import io.reactivex.rxjava3.observers.DisposableSingleObserver;
+
+public class DiaryListViewModel extends BaseViewModel {
+
+    private MutableLiveData<List<Diary>> diaryListLiveData = new MutableLiveData<>();//日记列表的数据容器
+
+    private DiaryDataSource diaryDataSource;//日记数据来源
+
+    public DiaryListViewModel(@NonNull Application application) {
+        super(application);
+        diaryDataSource = ((Mapp) application).getDiaryDataSource();
+    }
+
+    /**
+     * 获取日记列表的数据容器
+     */
+    public LiveData<List<Diary>> getDiaryListLiveData() {
+        return diaryListLiveData;
+    }
+
+    /**
+     * 加载数据
+     */
+    public void loadData(boolean lazy) {
+        if (lazy && loaded) {
+            return;
+        }
+        loaded = true;
+
+        diaryDataSource.selectList().compose(SingleObserverUtils.applyUIScheduler(this)).subscribe(new DisposableSingleObserver<List<Diary>>() {
+
+            @Override
+            public void onSuccess(List<Diary> list) {
+                diaryListLiveData.setValue(list);
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                ToastUtils.showShort("获取失败, 原因:" + e.getMessage());
+                diaryListLiveData.setValue(null);
+            }
+
+        });
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/IndexFragment.java

@@ -0,0 +1,81 @@
+package com.app.diary.ui;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.Toolbar;
+
+import com.app.diary.R;
+import com.app.diary.utils.AppUtils;
+
+/**
+ * 首页
+ */
+public class IndexFragment extends BaseFragment {
+
+    private Toolbar toolbar;//标题栏控件
+    private Button browseButton;//查看日记按钮控件
+    private Button createButton;//创建日记按钮控件
+    private TextView versionTextView;//当前版本文本控件
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_index, container, false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        initView(view);
+        setView();
+    }
+
+    /**
+     * 初始化控件
+     */
+    private void initView(@NonNull View view) {
+        toolbar = view.findViewById(R.id.toolbar);
+        browseButton = view.findViewById(R.id.browse_button);
+        createButton = view.findViewById(R.id.create_button);
+        versionTextView = view.findViewById(R.id.version_textView);
+    }
+
+    /**
+     * 设置控件
+     */
+    private void setView() {
+        //将标题栏关联到页面
+        initSupportActionBar(toolbar, false);
+
+        //设置查看日记按钮的点击事件
+        browseButton.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                getNavController().navigate(IndexFragmentDirections.diaryListAction());
+            }
+
+        });
+
+        //设置创建日记按钮的点击事件
+        createButton.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                getNavController().navigate(IndexFragmentDirections.diaryEditAction(0));
+            }
+
+        });
+
+        //将当前版本名称显示在文本上
+        versionTextView.setText("当前版本:v" + AppUtils.getVersionName());
+    }
+
+}

src/dairy/src/main/java/com/app/diary/ui/MainActivity.java

@@ -0,0 +1,21 @@
+package com.app.diary.ui;
+
+import android.content.pm.ActivityInfo;
+import android.os.Bundle;
+
+import com.app.diary.R;
+
+/**
+ * 主页面
+ */
+public class MainActivity extends BaseActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        //设置竖屏
+        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+    }
+
+}

src/dairy/src/main/java/com/app/diary/utils/AppUtils.java

@@ -0,0 +1,28 @@
+package com.app.diary.utils;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+
+import com.app.diary.Mapp;
+
+/**
+ * app工具
+ */
+public class AppUtils {
+
+    /**
+     * 获取版本名称
+     */
+    public static String getVersionName() {
+        try {
+            Context context = Mapp.getInstance();
+            PackageManager pm = context.getPackageManager();
+            PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);
+            return pi == null ? "" : pi.versionName;
+        } catch (PackageManager.NameNotFoundException e) {
+            return "";
+        }
+    }
+
+}

src/dairy/src/main/java/com/app/diary/utils/SizeUtils.java

@@ -0,0 +1,42 @@
+package com.app.diary.utils;
+
+import android.content.res.Resources;
+
+/**
+ * 尺寸工具
+ */
+public class SizeUtils {
+
+    /**
+     * dp单位转成px单位
+     */
+    public static int dp2px(float dpValue) {
+        float scale = Resources.getSystem().getDisplayMetrics().density;
+        return (int) (dpValue * scale + 0.5f);
+    }
+
+    /**
+     * px单位转成dp单位
+     */
+    public static int px2dp(float pxValue) {
+        float scale = Resources.getSystem().getDisplayMetrics().density;
+        return (int) (pxValue / scale + 0.5f);
+    }
+
+    /**
+     * sp单位转成px单位
+     */
+    public static int sp2px(float spValue) {
+        float fontScale = Resources.getSystem().getDisplayMetrics().scaledDensity;
+        return (int) (spValue * fontScale + 0.5f);
+    }
+
+    /**
+     * px单位转成sp单位
+     */
+    public static int px2sp(float pxValue) {
+        float fontScale = Resources.getSystem().getDisplayMetrics().scaledDensity;
+        return (int) (pxValue / fontScale + 0.5f);
+    }
+
+}

src/dairy/src/main/java/com/app/diary/utils/TimeUtils.java

@@ -0,0 +1,50 @@
+package com.app.diary.utils;
+
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Locale;
+
+/**
+ * 时间工具
+ */
+public class TimeUtils {
+
+    /**
+     * 获取简要时间
+     */
+    public static String getSimpleTime(long millis) {
+        long now = System.currentTimeMillis();
+        long span = now - millis;
+        if (span < 0) {
+            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(millis));
+        } else if (span < 1000) {
+            return "刚刚";
+        } else if (span < 60000) {
+            return String.format(Locale.getDefault(), "%d秒前", span / 1000);
+        } else if (span < 3600000) {
+            return String.format(Locale.getDefault(), "%d分钟前", span / 60000);
+        }
+        long wee = getWeeOfToday();
+        if (millis >= wee) {
+            return "今天" + new SimpleDateFormat("HH:mm:ss").format(new Date(millis));
+        } else if (millis >= wee - 86400000) {
+            return "昨天" + new SimpleDateFormat("HH:mm:ss").format(new Date(millis));
+        } else {
+            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(millis));
+        }
+    }
+
+    /**
+     * 获取时分秒归0的当前时间
+     */
+    private static long getWeeOfToday() {
+        Calendar calendar = Calendar.getInstance();
+        calendar.set(Calendar.HOUR_OF_DAY, 0);
+        calendar.set(Calendar.SECOND, 0);
+        calendar.set(Calendar.MINUTE, 0);
+        calendar.set(Calendar.MILLISECOND, 0);
+        return calendar.getTimeInMillis();
+    }
+
+}

src/dairy/src/main/java/com/app/diary/utils/ToastUtils.java

@@ -0,0 +1,19 @@
+package com.app.diary.utils;
+
+import android.widget.Toast;
+
+import com.app.diary.Mapp;
+
+/**
+ * 吐司工具
+ */
+public class ToastUtils {
+
+    /**
+     * 短时间吐司
+     */
+    public static void showShort(CharSequence text) {
+        Toast.makeText(Mapp.getInstance(), text, Toast.LENGTH_SHORT).show();
+    }
+
+}

src/dairy/src/main/java/com/app/diary/utils/rxjava/CompletableObserverUtils.java

@@ -0,0 +1,41 @@
+package com.app.diary.utils.rxjava;
+
+import androidx.annotation.Nullable;
+
+import com.app.diary.ui.BaseViewModel;
+
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.CompletableTransformer;
+import io.reactivex.rxjava3.schedulers.Schedulers;
+
+public class CompletableObserverUtils {
+
+    /**
+     * UI线程调度器
+     */
+    public static CompletableTransformer applyUIScheduler(@Nullable BaseViewModel viewModel) {
+        return upstream -> upstream
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .doOnSubscribe(disposable -> {
+                    if (viewModel != null) {
+                        viewModel.addDisposable(disposable);
+                    }
+                });
+    }
+
+    /**
+     * IO线程调度器
+     */
+    public static CompletableTransformer applyIOScheduler(@Nullable BaseViewModel viewModel) {
+        return upstream -> upstream
+                .subscribeOn(Schedulers.io())
+                .observeOn(Schedulers.io())
+                .doOnSubscribe(disposable -> {
+                    if (viewModel != null) {
+                        viewModel.addDisposable(disposable);
+                    }
+                });
+    }
+
+}

src/dairy/src/main/java/com/app/diary/utils/rxjava/SingleObserverUtils.java

@@ -0,0 +1,41 @@
+package com.app.diary.utils.rxjava;
+
+import androidx.annotation.Nullable;
+
+import com.app.diary.ui.BaseViewModel;
+
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers;
+import io.reactivex.rxjava3.core.SingleTransformer;
+import io.reactivex.rxjava3.schedulers.Schedulers;
+
+public class SingleObserverUtils {
+
+    /**
+     * UI线程调度器
+     */
+    public static <T> SingleTransformer<T, T> applyUIScheduler(@Nullable BaseViewModel viewModel) {
+        return upstream -> upstream
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .doOnSubscribe(disposable -> {
+                    if (viewModel != null) {
+                        viewModel.addDisposable(disposable);
+                    }
+                });
+    }
+
+    /**
+     * IO线程调度器
+     */
+    public static <T> SingleTransformer<T, T> applyIOScheduler(@Nullable BaseViewModel viewModel) {
+        return upstream -> upstream
+                .subscribeOn(Schedulers.io())
+                .observeOn(Schedulers.io())
+                .doOnSubscribe(disposable -> {
+                    if (viewModel != null) {
+                        viewModel.addDisposable(disposable);
+                    }
+                });
+    }
+
+}

src/dairy/src/main/res/drawable/bg_edit.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--失效-->
+    <item android:state_enabled="false">
+        <shape android:shape="rectangle">
+            <corners android:radius="10dp" />
+            <stroke android:width="1dp" android:color="@color/pink_200" />
+        </shape>
+    </item>
+
+    <!--焦点-->
+    <item android:state_focused="true">
+        <shape android:shape="rectangle">
+            <corners android:radius="10dp" />
+            <stroke android:width="2dp" android:color="@color/pink_500" />
+        </shape>
+    </item>
+
+    <!--正常-->
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="10dp" />
+            <stroke android:width="1dp" android:color="@color/pink_300" />
+        </shape>
+    </item>
+
+</selector>

src/dairy/src/main/res/drawable/btn_diary.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--失效-->
+    <item android:state_enabled="false">
+        <shape android:shape="rectangle">
+            <corners android:radius="6dp" />
+            <solid android:color="@color/transparent" />
+            <stroke android:width="2dp" android:color="@color/pink_200" />
+        </shape>
+    </item>
+
+    <!--按压-->
+    <item android:state_pressed="true">
+        <shape android:shape="rectangle">
+            <corners android:radius="6dp" />
+            <solid android:color="@color/transparent" />
+            <stroke android:width="2dp" android:color="@color/pink_500" />
+        </shape>
+    </item>
+
+    <!--正常-->
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="6dp" />
+            <solid android:color="@color/transparent" />
+            <stroke android:width="2dp" android:color="@color/pink_300" />
+        </shape>
+    </item>
+
+</selector>

src/dairy/src/main/res/drawable/btn_full.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--失效-->
+    <item android:state_enabled="false">
+        <shape android:shape="rectangle">
+            <corners android:radius="60dp" />
+            <solid android:color="@color/pink_300" />
+        </shape>
+    </item>
+
+    <!--按压-->
+    <item android:state_pressed="true">
+        <shape android:shape="rectangle">
+            <corners android:radius="60dp" />
+            <solid android:color="@color/pink_700" />
+        </shape>
+    </item>
+
+    <!--正常-->
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="60dp" />
+            <solid android:color="@color/pink_500" />
+        </shape>
+    </item>
+
+</selector>

src/dairy/src/main/res/drawable/btn_hollow.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!--失效-->
+    <item android:state_enabled="false">
+        <shape android:shape="rectangle">
+            <corners android:radius="60dp" />
+            <solid android:color="@color/transparent" />
+            <stroke android:width="3dp" android:color="@color/pink_300" />
+        </shape>
+    </item>
+
+    <!--按压-->
+    <item android:state_pressed="true">
+        <shape android:shape="rectangle">
+            <corners android:radius="60dp" />
+            <solid android:color="@color/transparent" />
+            <stroke android:width="3dp" android:color="@color/pink_700" />
+        </shape>
+    </item>
+
+    <!--正常-->
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="60dp" />
+            <solid android:color="@color/transparent" />
+            <stroke android:width="3dp" android:color="@color/pink_500" />
+        </shape>
+    </item>
+
+</selector>

src/dairy/src/main/res/layout/activity_main.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/nav_host_fragment"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true"
+        app:navGraph="@navigation/nav_main" />
+
+</FrameLayout>

src/dairy/src/main/res/layout/fragment_diary_browse.xml

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/pink_200"
+    android:orientation="vertical">
+
+    <!--    标题栏-->
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.App.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.App.PopupOverlay"
+            app:title="日记详情" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <androidx.core.widget.NestedScrollView
+        android:id="@+id/scrollView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fillViewport="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical">
+
+            <!--    标题文本-->
+            <TextView
+                android:id="@+id/title_textView"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="20dp"
+                android:layout_marginTop="30dp"
+                android:layout_marginEnd="20dp"
+                android:gravity="center_horizontal"
+                android:textColor="@color/pink_500"
+                android:textSize="20sp" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="30dp"
+                android:gravity="center"
+                android:orientation="horizontal">
+
+                <!--    日期文本-->
+                <TextView
+                    android:id="@+id/date_textView"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:textColor="@color/pink_500"
+                    android:textSize="14sp" />
+
+                <!--    星期文本-->
+                <TextView
+                    android:id="@+id/week_textView"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="20dp"
+                    android:textColor="@color/pink_500"
+                    android:textSize="14sp" />
+
+                <!--    天气文本-->
+                <TextView
+                    android:id="@+id/weather_textView"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="20dp"
+                    android:textColor="@color/pink_500"
+                    android:textSize="14sp" />
+
+            </LinearLayout>
+
+            <!--    内容文本-->
+            <TextView
+                android:id="@+id/content_textView"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="20dp"
+                android:layout_marginTop="30dp"
+                android:layout_marginEnd="20dp"
+                android:layout_marginBottom="30dp"
+                android:gravity="start|top"
+                android:textColor="@color/pink_500"
+                android:textSize="18sp" />
+
+        </LinearLayout>
+
+    </androidx.core.widget.NestedScrollView>
+
+    <!--    错误文本-->
+    <TextView
+        android:id="@+id/error_textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="30dp"
+        android:gravity="center"
+        android:textColor="@color/pink_500"
+        android:textSize="18sp"
+        android:visibility="gone" />
+
+</LinearLayout>

src/dairy/src/main/res/layout/fragment_diary_edit.xml

@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/pink_200"
+    android:orientation="vertical">
+
+    <!--    标题栏-->
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.App.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.App.PopupOverlay"
+            app:title="编辑日记" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <!--    标题输入框-->
+    <EditText
+        android:id="@+id/title_editText"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="20dp"
+        android:layout_marginTop="30dp"
+        android:layout_marginEnd="20dp"
+        android:background="@drawable/bg_edit"
+        android:gravity="start|center_vertical"
+        android:hint="标题..."
+        android:padding="20dp"
+        android:textColor="@color/pink_500"
+        android:textColorHint="@color/pink_300"
+        android:textSize="20sp" />
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="20dp"
+        android:layout_marginTop="30dp"
+        android:layout_marginEnd="20dp">
+
+        <!--    日期文本框-->
+        <TextView
+            android:id="@+id/date_textView"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="start|center_vertical"
+            android:background="@drawable/bg_edit"
+            android:gravity="start|top"
+            android:hint="日期"
+            android:padding="10dp"
+            android:textColor="@color/pink_500"
+            android:textColorHint="@color/pink_300"
+            android:textSize="14sp" />
+
+        <!--    天气文本框-->
+        <TextView
+            android:id="@+id/weather_textView"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end|center_vertical"
+            android:background="@drawable/bg_edit"
+            android:gravity="end|top"
+            android:hint="天气"
+            android:padding="10dp"
+            android:textColor="@color/pink_500"
+            android:textColorHint="@color/pink_300"
+            android:textSize="14sp" />
+
+    </FrameLayout>
+
+    <!--    内容输入框-->
+    <EditText
+        android:id="@+id/content_editText"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginStart="20dp"
+        android:layout_marginTop="30dp"
+        android:layout_marginEnd="20dp"
+        android:layout_marginBottom="30dp"
+        android:background="@drawable/bg_edit"
+        android:gravity="start|top"
+        android:hint="内容..."
+        android:padding="20dp"
+        android:textColor="@color/pink_500"
+        android:textColorHint="@color/pink_300"
+        android:textSize="18sp" />
+
+</LinearLayout>

src/dairy/src/main/res/layout/fragment_diary_list.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/pink_200"
+    android:orientation="vertical">
+
+    <!--    标题栏-->
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.App.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.App.PopupOverlay"
+            app:title="日记列表" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:clipToPadding="false"
+        android:padding="30dp" />
+
+</LinearLayout>

src/dairy/src/main/res/layout/fragment_index.xml

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/pink_200"
+    android:orientation="vertical">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.App.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.App.PopupOverlay"
+            app:title="@string/app_name" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1.0"
+        android:fillViewport="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:gravity="center"
+            android:orientation="vertical">
+
+            <Button
+                android:id="@+id/browse_button"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:background="@drawable/btn_full"
+                android:paddingStart="30dp"
+                android:paddingTop="20dp"
+                android:paddingEnd="30dp"
+                android:paddingBottom="20dp"
+                android:text="查看日记"
+                android:textColor="@color/pink_700"
+                android:textSize="26sp" />
+
+            <Button
+                android:id="@+id/create_button"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="50dp"
+                android:background="@drawable/btn_hollow"
+                android:paddingStart="30dp"
+                android:paddingTop="20dp"
+                android:paddingEnd="30dp"
+                android:paddingBottom="20dp"
+                android:text="创建日记"
+                android:textColor="@color/pink_700"
+                android:textSize="26sp" />
+
+        </LinearLayout>
+
+    </ScrollView>
+
+    <TextView
+        android:id="@+id/version_textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:layout_margin="20dp"
+        android:textColor="@color/pink_300"
+        android:textSize="12sp" />
+
+</LinearLayout>

src/dairy/src/main/res/layout/item_recycler_diary.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/row_linearLayout"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/btn_diary"
+    android:orientation="vertical"
+    android:paddingStart="15dp"
+    android:paddingTop="15dp"
+    android:paddingEnd="15dp"
+    android:paddingBottom="10dp">
+
+    <TextView
+        android:id="@+id/title_textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="start"
+        android:textColor="@color/pink_500"
+        android:textSize="16sp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/date_textView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1.0"
+            android:gravity="start"
+            android:textColor="@color/pink_500"
+            android:textSize="14sp" />
+
+        <TextView
+            android:id="@+id/weather_textView"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="10dp"
+            android:textColor="@color/pink_500"
+            android:textSize="14sp" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/wordCount_textView"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="start"
+            android:textColor="@color/brown"
+            android:textSize="12sp" />
+
+        <TextView
+            android:id="@+id/updateTime_textView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="10dp"
+            android:gravity="end"
+            android:textColor="@color/brown"
+            android:textSize="12sp" />
+
+    </LinearLayout>
+
+</LinearLayout>

src/dairy/src/main/res/menu/menu_diary_browse.xml

@@ -0,0 +1,16 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/action_update"
+        android:orderInCategory="100"
+        android:title="编辑"
+        app:showAsAction="always" />
+
+    <item
+        android:id="@+id/action_delete"
+        android:orderInCategory="101"
+        android:title="删除"
+        app:showAsAction="never" />
+
+</menu>

src/dairy/src/main/res/menu/menu_diary_create.xml

@@ -0,0 +1,10 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/action_save"
+        android:orderInCategory="100"
+        android:title="保存"
+        app:showAsAction="always" />
+
+</menu>

src/dairy/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

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

src/dairy/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

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

src/dairy/src/main/res/navigation/nav_main.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main_graph"
+    app:startDestination="@+id/index_fragment">
+
+    <fragment
+        android:id="@+id/index_fragment"
+        android:name="com.app.diary.ui.IndexFragment"
+        android:label="首页"
+        tools:layout="@layout/fragment_index">
+
+        <action
+            android:id="@+id/diary_list_action"
+            app:destination="@id/diary_list_fragment" />
+
+        <action
+            android:id="@+id/diary_edit_action"
+            app:destination="@id/diary_edit_fragment" />
+
+    </fragment>
+
+    <fragment
+        android:id="@+id/diary_list_fragment"
+        android:name="com.app.diary.ui.DiaryListFragment"
+        android:label="日记列表页"
+        tools:layout="@layout/fragment_diary_list">
+
+        <action
+            android:id="@+id/diary_browse_action"
+            app:destination="@id/diary_browse_fragment" />
+
+    </fragment>
+
+    <fragment
+        android:id="@+id/diary_browse_fragment"
+        android:name="com.app.diary.ui.DiaryBrowseFragment"
+        android:label="日记浏览页"
+        tools:layout="@layout/fragment_diary_browse">
+
+        <argument
+            android:name="diaryId"
+            app:argType="long" />
+
+        <action
+            android:id="@+id/diary_edit_action"
+            app:destination="@id/diary_edit_fragment" />
+
+    </fragment>
+
+    <fragment
+        android:id="@+id/diary_edit_fragment"
+        android:name="com.app.diary.ui.DiaryEditFragment"
+        android:label="日记编辑页"
+        tools:layout="@layout/fragment_diary_edit">
+
+        <argument
+            android:name="diaryId"
+            app:argType="long" />
+
+    </fragment>
+
+</navigation>

src/dairy/src/main/res/values/colors.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#000000</color>
+    <color name="white">#FFFFFF</color>
+    <color name="brown">#D8C4B6</color>
+    <color name="transparent">#00000000</color>
+
+    <color name="ic_launcher_background">#FF8989</color>
+
+    <color name="pink_200">#FFEADD</color>
+    <color name="pink_300">#FCAEAE</color>
+    <color name="pink_500">#FF8989</color>
+    <color name="pink_700">#FF6666</color>
+
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+</resources>

src/dairy/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">日记本</string>
+</resources>

src/dairy/src/main/res/values/themes.xml

@@ -0,0 +1,32 @@
+<resources>
+
+    <style name="Theme.App" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- 主色调 -->
+        <item name="colorPrimary">@color/pink_300</item>
+        <item name="colorPrimaryVariant">@color/pink_500</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- 次色调 -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- 状态栏颜色 -->
+        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
+    </style>
+
+    <style name="Theme.App.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+        <item name="actionOverflowMenuStyle">@style/OverflowMenuStyle</item>
+    </style>
+
+    <style name="Theme.App.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <style name="Theme.App.PopupOverlay" parent="ThemeOverlay.AppCompat.Light">
+        <item name="android:textColorPrimary">@color/white</item>
+    </style>
+
+    <style name="OverflowMenuStyle" parent="@style/Widget.MaterialComponents.PopupMenu.Overflow">
+        <item name="android:popupBackground">@color/pink_300</item>
+    </style>
+
+</resources>

src/dairy/src/main/res/xml/backup_rules.xml

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

src/dairy/src/main/res/xml/data_extraction_rules.xml

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