注释

tool/BackupUtils.java

@@ -0,0 +1,319 @@
+package net.micode.notes.tool;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.os.Environment;
+import android.text.TextUtils;
+import android.text.format.DateFormat;
+import android.util.Log;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+
+// 备份工具类，用于将笔记数据导出为文本文件
+public class BackupUtils {
+    private static final String TAG = "BackupUtils";
+
+    // 单例模式相关
+    private static BackupUtils sInstance;
+
+    // 获取单例实例
+    public static synchronized BackupUtils getInstance(Context context) {
+        if (sInstance == null) {
+            sInstance = new BackupUtils(context);
+        }
+        return sInstance;
+    }
+
+    // 定义备份或恢复操作的状态常量
+    // SD卡未挂载
+    public static final int STATE_SD_CARD_UNMOUONTED = 0;
+    // 备份文件不存在
+    public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
+    // 数据格式不正确，可能被其他程序修改
+    public static final int STATE_DATA_DESTROIED = 2;
+    // 系统运行时异常导致备份或恢复失败
+    public static final int STATE_SYSTEM_ERROR = 3;
+    // 备份或恢复成功
+    public static final int STATE_SUCCESS = 4;
+
+    private TextExport mTextExport;
+
+    // 私有构造函数，初始化TextExport实例
+    private BackupUtils(Context context) {
+        mTextExport = new TextExport(context);
+    }
+
+    // 检查外部存储是否可用
+    private static boolean externalStorageAvailable() {
+        return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
+    }
+
+    // 导出笔记数据为文本文件，调用TextExport的exportToText方法
+    public int exportToText() {
+        return mTextExport.exportToText();
+    }
+
+    // 获取导出的文本文件名
+    public String getExportedTextFileName() {
+        return mTextExport.mFileName;
+    }
+
+    // 获取导出的文本文件目录
+    public String getExportedTextFileDir() {
+        return mTextExport.mFileDirectory;
+    }
+
+    // 内部类，用于处理文本导出的具体操作
+    private static class TextExport {
+        // 查询笔记的投影，包括ID、修改日期、片段和类型
+        private static final String[] NOTE_PROJECTION = {
+                NoteColumns.ID,
+                NoteColumns.MODIFIED_DATE,
+                NoteColumns.SNIPPET,
+                NoteColumns.TYPE
+        };
+        // 笔记投影中ID列的索引
+        private static final int NOTE_COLUMN_ID = 0;
+        // 笔记投影中修改日期列的索引
+        private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
+        // 笔记投影中片段列的索引
+        private static final int NOTE_COLUMN_SNIPPET = 2;
+
+        // 查询数据的投影，包括内容、MIME类型、数据1、数据2、数据3、数据4
+        private static final String[] DATA_PROJECTION = {
+                DataColumns.CONTENT,
+                DataColumns.MIME_TYPE,
+                DataColumns.DATA1,
+                DataColumns.DATA2,
+                DataColumns.DATA3,
+                DataColumns.DATA4,
+        };
+        // 数据投影中内容列的索引
+        private static final int DATA_COLUMN_CONTENT = 0;
+        // 数据投影中MIME类型列的索引
+        private static final int DATA_COLUMN_MIME_TYPE = 1;
+        // 数据投影中通话日期列的索引（假设为DATA1）
+        private static final int DATA_COLUMN_CALL_DATE = 2;
+        // 数据投影中电话号码列的索引（假设为DATA3）
+        private static final int DATA_COLUMN_PHONE_NUMBER = 4;
+
+        // 用于格式化导出文本的格式数组
+        private final String[] TEXT_FORMAT;
+        // 格式化数组中文件夹名称的索引
+        private static final int FORMAT_FOLDER_NAME = 0;
+        // 格式化数组中笔记日期的索引
+        private static final int FORMAT_NOTE_DATE = 1;
+        // 格式化数组中笔记内容的索引
+        private static final int FORMAT_NOTE_CONTENT = 2;
+
+        private Context mContext;
+        private String mFileName;
+        private String mFileDirectory;
+
+        // 构造函数，初始化相关变量
+        public TextExport(Context context) {
+            TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
+            mContext = context;
+            mFileName = "";
+            mFileDirectory = "";
+        }
+
+        // 根据索引获取格式化字符串
+        private String getFormat(int id) {
+            return TEXT_FORMAT[id];
+        }
+
+        // 将指定文件夹及其笔记导出为文本，打印到PrintStream
+        private void exportFolderToText(String folderId, PrintStream ps) {
+            // 查询属于该文件夹的笔记
+            Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI,
+                    NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[]{
+                            folderId
+                    }, null);
+            if (notesCursor!= null) {
+                if (notesCursor.moveToFirst()) {
+                    do {
+                        // 打印笔记的最后修改日期
+                        ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
+                                mContext.getString(R.string.format_datetime_mdhm),
+                                notesCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
+                        // 查询属于该笔记的数据
+                        String noteId = notesCursor.getString(NOTE_COLUMN_ID);
+                        exportNoteToText(noteId, ps);
+                    } while (notesCursor.moveToNext());
+                }
+                notesCursor.close();
+            }
+        }
+
+        // 将指定笔记导出为文本，打印到PrintStream
+        private void exportNoteToText(String noteId, PrintStream ps) {
+            Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI,
+                    DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[]{
+                            noteId
+                    }, null);
+            if (dataCursor!= null) {
+                if (dataCursor.moveToFirst()) {
+                    do {
+                        String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE);
+                        if (DataConstants.CALL_NOTE.equals(mimeType)) {
+                            // 打印电话号码
+                            String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
+                            long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
+                            String location = dataCursor.getString(DATA_COLUMN_CONTENT);
+                            if (!TextUtils.isEmpty(phoneNumber)) {
+                                ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
+                                        phoneNumber));
+                            }
+                            // 打印通话日期
+                            ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
+                                   .format(mContext.getString(R.string.format_datetime_mdhm),
+                                            callDate)));
+                            // 打印通话附件位置
+                            if (!TextUtils.isEmpty(location)) {
+                                ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
+                                        location));
+                            }
+                        } else if (DataConstants.NOTE.equals(mimeType)) {
+                            String content = dataCursor.getString(DATA_COLUMN_CONTENT);
+                            if (!TextUtils.isEmpty(content)) {
+                                ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
+                                        content));
+                            }
+                        }
+                    } while (dataCursor.moveToNext());
+                }
+                dataCursor.close();
+            }
+            // 在笔记之间打印换行符
+            try {
+                ps.write(new byte[]{
+                        Character.LINE_SEPARATOR, Character.LETTER_NUMBER
+                });
+            } catch (IOException e) {
+                Log.e(TAG, e.toString());
+            }
+        }
+
+        // 将笔记导出为用户可读的文本
+        public int exportToText() {
+            if (!externalStorageAvailable()) {
+                Log.d(TAG, "Media was not mounted");
+                return STATE_SD_CARD_UNMOUONTED;
+            }
+            PrintStream ps = getExportToTextPrintStream();
+            if (ps == null) {
+                Log.e(TAG, "get print stream error");
+                return STATE_SYSTEM_ERROR;
+            }
+            // 首先导出文件夹及其笔记
+            Cursor folderCursor = mContext.getContentResolver().query(
+                    Notes.CONTENT_NOTE_URI,
+                    NOTE_PROJECTION,
+                    "(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND "
+                            + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR "
+                            + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null);
+            if (folderCursor!= null) {
+                if (folderCursor.moveToFirst()) {
+                    do {
+                        // 打印文件夹名称
+                        String folderName = "";
+                        if (folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) {
+                            folderName = mContext.getString(R.string.call_record_folder_name);
+                        } else {
+                            folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET);
+                        }
+                        if (!TextUtils.isEmpty(folderName)) {
+                            ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName));
+                        }
+                        String folderId = folderCursor.getString(NOTE_COLUMN_ID);
+                        exportFolderToText(folderId, ps);
+                    } while (folderCursor.moveToNext());
+                }
+                folderCursor.close();
+            }
+            // 导出根文件夹中的笔记
+            Cursor noteCursor = mContext.getContentResolver().query(
+                    Notes.CONTENT_NOTE_URI,
+                    NOTE_PROJECTION,
+                    NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
+                            + "=0", null, null);
+            if (noteCursor!= null) {
+                if (noteCursor.moveToFirst()) {
+                    do {
+                        ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
+                                mContext.getString(R.string.format_datetime_mdhm),
+                                noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
+                        // 查询属于该笔记的数据
+                        String noteId = noteCursor.getString(NOTE_COLUMN_ID);
+                        exportNoteToText(noteId, ps);
+                    } while (noteCursor.moveToNext());
+                }
+                noteCursor.close();
+            }
+            ps.close();
+            return STATE_SUCCESS;
+        }
+
+        // 获取指向导出文本文件的PrintStream
+        private PrintStream getExportToTextPrintStream() {
+            File file = generateFileMountedOnSDcard(mContext, R.string.file_path,
+                    R.string.file_name_txt_format);
+            if (file == null) {
+                Log.e(TAG, "create file to exported failed");
+                return null;
+            }
+            mFileName = file.getName();
+            mFileDirectory = mContext.getString(R.string.file_path);
+            PrintStream ps = null;
+            try {
+                FileOutputStream fos = new FileOutputStream(file);
+                ps = new PrintStream(fos);
+            } catch (FileNotFoundException e) {
+                e.printStackTrace();
+                return null;
+            } catch (NullPointerException e) {
+                e.printStackTrace();
+                return null;
+            }
+            return ps;
+        }
+    }
+
+    // 在SD卡上生成用于存储导入数据的文本文件
+    private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
+        StringBuilder sb = new StringBuilder();
+        sb.append(Environment.getExternalStorageDirectory());
+        sb.append(context.getString(filePathResId));
+        File filedir = new File(sb.toString());
+        sb.append(context.getString(
+                fileNameFormatResId,
+                DateFormat.format(context.getString(R.string.format_date_ymd),
+                        System.currentTimeMillis())));
+        File file = new File(sb.toString());
+        try {
+            if (!filedir.exists()) {
+                filedir.mkdir();
+            }
+            if (!file.exists()) {
+                file.createNewFile();
+            }
+            return file;
+        } catch (SecurityException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

tool/DataUtils.java

@@ -0,0 +1,289 @@
+package net.micode.notes.tool;
+
+import android.content.ContentProviderOperation;
+import android.content.ContentProviderResult;
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.OperationApplicationException;
+import android.database.Cursor;
+import android.os.RemoteException;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+
+// 数据工具类，提供各种与笔记数据处理相关的方法
+public class DataUtils {
+    public static final String TAG = "DataUtils";
+
+    // 批量删除笔记的方法
+    public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
+        if (ids == null) {
+            Log.d(TAG, "the ids is null");
+            return true;
+        }
+        if (ids.size() == 0) {
+            Log.d(TAG, "no id is in the hashset");
+            return true;
+        }
+
+        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
+        for (long id : ids) {
+            // 不允许删除系统根文件夹
+            if (id == Notes.ID_ROOT_FOLDER) {
+                Log.e(TAG, "Don't delete system folder root");
+                continue;
+            }
+            // 创建删除操作的构建器
+            ContentProviderOperation.Builder builder = ContentProviderOperation
+                  .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
+            operationList.add(builder.build());
+        }
+
+        try {
+            // 执行批量操作
+            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
+            if (results == null || results.length == 0 || results[0] == null) {
+                Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+                return false;
+            }
+            return true;
+        } catch (RemoteException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        } catch (OperationApplicationException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        }
+        return false;
+    }
+
+    // 将笔记移动到指定文件夹的方法
+    public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
+        ContentValues values = new ContentValues();
+        values.put(NoteColumns.PARENT_ID, desFolderId);
+        values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
+        values.put(NoteColumns.LOCAL_MODIFIED, 1);
+        // 更新笔记的父文件夹ID等信息
+        resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
+    }
+
+    // 批量将笔记移动到指定文件夹的方法
+    public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
+                                            long folderId) {
+        if (ids == null) {
+            Log.d(TAG, "the ids is null");
+            return true;
+        }
+
+        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
+        for (long id : ids) {
+            // 创建更新操作的构建器
+            ContentProviderOperation.Builder builder = ContentProviderOperation
+                  .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
+            builder.withValue(NoteColumns.PARENT_ID, folderId);
+            builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
+            operationList.add(builder.build());
+        }
+
+        try {
+            // 执行批量操作
+            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
+            if (results == null || results.length == 0 || results[0] == null) {
+                Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+                return false;
+            }
+            return true;
+        } catch (RemoteException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        } catch (OperationApplicationException e) {
+            Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
+        }
+        return false;
+    }
+
+    // 获取除系统文件夹外的所有文件夹数量的方法
+    public static int getUserFolderCount(ContentResolver resolver) {
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
+                new String[]{"COUNT(*)"},
+                NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
+                new String[]{String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)},
+                null);
+        int count = 0;
+        if (cursor!= null) {
+            if (cursor.moveToFirst()) {
+                try {
+                    count = cursor.getInt(0);
+                } catch (IndexOutOfBoundsException e) {
+                    Log.e(TAG, "get folder count failed:" + e.toString());
+                } finally {
+                    cursor.close();
+                }
+            }
+        }
+        return count;
+    }
+
+    // 检查笔记是否在笔记数据库中可见（非回收站且类型匹配）的方法
+    public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
+                null,
+                NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
+                new String[]{String.valueOf(type)},
+                null);
+        boolean exist = false;
+        if (cursor!= null) {
+            if (cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+
+    // 检查笔记是否存在于笔记数据库中的方法
+    public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
+                null, null, null, null);
+        boolean exist = false;
+        if (cursor!= null) {
+            if (cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+
+    // 检查数据是否存在于数据数据库中的方法
+    public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
+                null, null, null, null);
+        boolean exist = false;
+        if (cursor!= null) {
+            if (cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+
+    // 检查文件夹名称是否可见（非回收站且名称唯一）的方法
+    public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null,
+                NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER +
+                        " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER +
+                        " AND " + NoteColumns.SNIPPET + "=?",
+                new String[]{name}, null);
+        boolean exist = false;
+        if (cursor!= null) {
+            if (cursor.getCount() > 0) {
+                exist = true;
+            }
+            cursor.close();
+        }
+        return exist;
+    }
+
+    // 获取指定文件夹中笔记的小部件属性集合的方法
+    public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
+        Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
+                new String[]{NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE},
+                NoteColumns.PARENT_ID + "=?",
+                new String[]{String.valueOf(folderId)},
+                null);
+        HashSet<AppWidgetAttribute> set = null;
+        if (c!= null) {
+            if (c.moveToFirst()) {
+                set = new HashSet<AppWidgetAttribute>();
+                do {
+                    try {
+                        AppWidgetAttribute widget = new AppWidgetAttribute();
+                        widget.widgetId = c.getInt(0);
+                        widget.widgetType = c.getInt(1);
+                        set.add(widget);
+                    } catch (IndexOutOfBoundsException e) {
+                        Log.e(TAG, e.toString());
+                    }
+                } while (c.moveToNext());
+            }
+            c.close();
+        }
+        return set;
+    }
+
+    // 根据笔记ID获取通话号码的方法
+    public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
+        Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
+                new String[]{CallNote.PHONE_NUMBER},
+                CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
+                new String[]{String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE},
+                null);
+        if (cursor!= null && cursor.moveToFirst()) {
+            try {
+                return cursor.getString(0);
+            } catch (IndexOutOfBoundsException e) {
+                Log.e(TAG, "Get call number fails " + e.toString());
+            } finally {
+                cursor.close();
+            }
+        }
+        return "";
+    }
+
+    // 根据电话号码和通话日期获取笔记ID的方法
+    public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
+        Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
+                new String[]{CallNote.NOTE_ID},
+                CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL("
+                        + CallNote.PHONE_NUMBER + ",?)",
+                new String[]{String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber},
+                null);
+        if (cursor!= null) {
+            if (cursor.moveToFirst()) {
+                try {
+                    return cursor.getLong(0);
+                } catch (IndexOutOfBoundsException e) {
+                    Log.e(TAG, "Get call note id fails " + e.toString());
+                }
+            }
+            cursor.close();
+        }
+        return 0;
+    }
+
+    // 根据笔记ID获取笔记片段的方法
+    public static String getSnippetById(ContentResolver resolver, long noteId) {
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
+                new String[]{NoteColumns.SNIPPET},
+                NoteColumns.ID + "=?",
+                new String[]{String.valueOf(noteId)},
+                null);
+        if (cursor!= null) {
+            String snippet = "";
+            if (cursor.moveToFirst()) {
+                snippet = cursor.getString(0);
+            }
+            cursor.close();
+            return snippet;
+        }
+        throw new IllegalArgumentException("Note is not found with id: " + noteId);
+    }
+
+    // 格式化笔记片段的方法，去除首尾空格和换行符
+    public static String getFormattedSnippet(String snippet) {
+        if (snippet!= null) {
+            snippet = snippet.trim();
+            int index = snippet.indexOf('\n');
+            if (index!= -1) {
+                snippet = snippet.substring(0, index);
+            }
+        }
+        return snippet;
+    }
+}

tool/GTaskStringUtils.java

@@ -0,0 +1,99 @@
+package net.micode.notes.tool;
+
+// 用于处理与GTask相关的字符串常量的工具类
+public class GTaskStringUtils {
+
+    // GTask JSON中动作ID的键
+    public final static String GTASK_JSON_ACTION_ID = "action_id";
+    // GTask JSON中动作列表的键
+    public final static String GTASK_JSON_ACTION_LIST = "action_list";
+    // GTask JSON中动作类型的键
+    public final static String GTASK_JSON_ACTION_TYPE = "action_type";
+    // GTask JSON中创建动作类型的值
+    public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create";
+    // GTask JSON中获取所有动作类型的值
+    public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all";
+    // GTask JSON中移动动作类型的值
+    public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move";
+    // GTask JSON中更新动作类型的值
+    public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update";
+    // GTask JSON中创建者ID的键
+    public final static String GTASK_JSON_CREATOR_ID = "creator_id";
+    // GTask JSON中子实体的键
+    public final static String GTASK_JSON_CHILD_ENTITY = "child_entity";
+    // GTask JSON中客户端版本的键
+    public final static String GTASK_JSON_CLIENT_VERSION = "client_version";
+    // GTask JSON中完成状态的键
+    public final static String GTASK_JSON_COMPLETED = "completed";
+    // GTask JSON中当前列表ID的键
+    public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id";
+    // GTask JSON中默认列表ID的键
+    public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id";
+    // GTask JSON中已删除状态的键
+    public final static String GTASK_JSON_DELETED = "deleted";
+    // GTask JSON中目标列表的键
+    public final static String GTASK_JSON_DEST_LIST = "dest_list";
+    // GTask JSON中目标父级的键
+    public final static String GTASK_JSON_DEST_PARENT = "dest_parent";
+    // GTask JSON中目标父级类型的键
+    public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type";
+    // GTask JSON中实体增量的键
+    public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta";
+    // GTask JSON中实体类型的键
+    public final static String GTASK_JSON_ENTITY_TYPE = "entity_type";
+    // GTask JSON中获取已删除项的键
+    public final static String GTASK_JSON_GET_DELETED = "get_deleted";
+    // GTask JSON中ID的键
+    public final static String GTASK_JSON_ID = "id";
+    // GTask JSON中索引的键
+    public final static String GTASK_JSON_INDEX = "index";
+    // GTask JSON中最后修改时间的键
+    public final static String GTASK_JSON_LAST_MODIFIED = "last_modified";
+    // GTask JSON中最新同步点的键
+    public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point";
+    // GTask JSON中列表ID的键
+    public final static String GTASK_JSON_LIST_ID = "list_id";
+    // GTask JSON中列表的键
+    public final static String GTASK_JSON_LISTS = "lists";
+    // GTask JSON中名称的键
+    public final static String GTASK_JSON_NAME = "name";
+    // GTask JSON中新ID的键
+    public final static String GTASK_JSON_NEW_ID = "new_id";
+    // GTask JSON中笔记的键
+    public final static String GTASK_JSON_NOTES = "notes";
+    // GTask JSON中父级ID的键
+    public final static String GTASK_JSON_PARENT_ID = "parent_id";
+    // GTask JSON中前一个兄弟ID的键
+    public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id";
+    // GTask JSON中结果的键
+    public final static String GTASK_JSON_RESULTS = "results";
+    // GTask JSON中源列表的键
+    public final static String GTASK_JSON_SOURCE_LIST = "source_list";
+    // GTask JSON中任务的键
+    public final static String GTASK_JSON_TASKS = "tasks";
+    // GTask JSON中类型的键
+    public final static String GTASK_JSON_TYPE = "type";
+    // GTask JSON中组类型的值
+    public final static String GTASK_JSON_TYPE_GROUP = "GROUP";
+    // GTask JSON中任务类型的值
+    public final static String GTASK_JSON_TYPE_TASK = "TASK";
+    // GTask JSON中用户的键
+    public final static String GTASK_JSON_USER = "user";
+
+    // MIUI文件夹前缀
+    public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]";
+    // 默认文件夹名称
+    public final static String FOLDER_DEFAULT = "Default";
+    // 通话记录文件夹名称
+    public final static String FOLDER_CALL_NOTE = "Call_Note";
+    // 元数据文件夹名称
+    public final static String FOLDER_META = "METADATA";
+    // 元数据中GTask ID的头部信息
+    public final static String META_HEAD_GTASK_ID = "meta_gid";
+    // 元数据中笔记的头部信息
+    public final static String META_HEAD_NOTE = "meta_note";
+    // 元数据中数据的头部信息
+    public final static String META_HEAD_DATA = "meta_data";
+    // 元数据笔记的名称（包含提示信息）
+    public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
+}

tool/ResourceParser.java

@@ -0,0 +1,189 @@
+package net.micode.notes.tool;
+
+import android.content.Context;
+import android.preference.PreferenceManager;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+// 资源解析工具类，用于管理和获取与笔记应用相关的资源
+public class ResourceParser {
+
+    // 定义颜色常量
+    public static final int YELLOW = 0;
+    public static final int BLUE = 1;
+    public static final int WHITE = 2;
+    public static final int GREEN = 3;
+    public static final int RED = 4;
+    // 默认背景颜色
+    public static final int BG_DEFAULT_COLOR = YELLOW;
+
+    // 定义字体大小常量
+    public static final int TEXT_SMALL = 0;
+    public static final int TEXT_MEDIUM = 1;
+    public static final int TEXT_LARGE = 2;
+    public static final int TEXT_SUPER = 3;
+    // 默认字体大小
+    public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
+
+    // 内部类，用于管理笔记编辑背景资源
+    public static class NoteBgResources {
+        // 编辑状态下的背景资源数组
+        private final static int[] BG_EDIT_RESOURCES = new int[]{
+                R.drawable.edit_yellow,
+                R.drawable.edit_blue,
+                R.drawable.edit_white,
+                R.drawable.edit_green,
+                R.drawable.edit_red
+        };
+        // 编辑状态下标题的背景资源数组
+        private final static int[] BG_EDIT_TITLE_RESOURCES = new int[]{
+                R.drawable.edit_title_yellow,
+                R.drawable.edit_title_blue,
+                R.drawable.edit_title_white,
+                R.drawable.edit_title_green,
+                R.drawable.edit_title_red
+        };
+
+        // 根据ID获取笔记编辑背景资源
+        public static int getNoteBgResource(int id) {
+            return BG_EDIT_RESOURCES[id];
+        }
+
+        // 根据ID获取笔记编辑标题背景资源
+        public static int getNoteTitleBgResource(int id) {
+            return BG_EDIT_TITLE_RESOURCES[id];
+        }
+    }
+
+    // 获取默认背景颜色ID的方法
+    public static int getDefaultBgId(Context context) {
+        if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
+                NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
+            // 如果设置了随机背景颜色，则随机选择一个背景资源ID
+            return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
+        } else {
+            // 否则返回默认背景颜色ID
+            return BG_DEFAULT_COLOR;
+        }
+    }
+
+    // 内部类，用于管理笔记列表项背景资源
+    public static class NoteItemBgResources {
+        // 列表项第一个的背景资源数组
+        private final static int[] BG_FIRST_RESOURCES = new int[]{
+                R.drawable.list_yellow_up,
+                R.drawable.list_blue_up,
+                R.drawable.list_white_up,
+                R.drawable.list_green_up,
+                R.drawable.list_red_up
+        };
+        // 列表项中间的背景资源数组
+        private final static int[] BG_NORMAL_RESOURCES = new int[]{
+                R.drawable.list_yellow_middle,
+                R.drawable.list_blue_middle,
+                R.drawable.list_white_middle,
+                R.drawable.list_green_middle,
+                R.drawable.list_red_middle
+        };
+        // 列表项最后一个的背景资源数组
+        private final static int[] BG_LAST_RESOURCES = new int[]{
+                R.drawable.list_yellow_down,
+                R.drawable.list_blue_down,
+                R.drawable.list_white_down,
+                R.drawable.list_green_down,
+                R.drawable.list_red_down,
+        };
+        // 单个列表项的背景资源数组
+        private final static int[] BG_SINGLE_RESOURCES = new int[]{
+                R.drawable.list_yellow_single,
+                R.drawable.list_blue_single,
+                R.drawable.list_white_single,
+                R.drawable.list_green_single,
+                R.drawable.list_red_single
+        };
+
+        // 根据ID获取列表项第一个的背景资源
+        public static int getNoteBgFirstRes(int id) {
+            return BG_FIRST_RESOURCES[id];
+        }
+
+        // 根据ID获取列表项最后一个的背景资源
+        public static int getNoteBgLastRes(int id) {
+            return BG_LAST_RESOURCES[id];
+        }
+
+        // 根据ID获取单个列表项的背景资源
+        public static int getNoteBgSingleRes(int id) {
+            return BG_SINGLE_RESOURCES[id];
+        }
+
+        // 根据ID获取列表项中间的背景资源
+        public static int getNoteBgNormalRes(int id) {
+            return BG_NORMAL_RESOURCES[id];
+        }
+
+        // 获取文件夹背景资源
+        public static int getFolderBgRes() {
+            return R.drawable.list_folder;
+        }
+    }
+
+    // 内部类，用于管理小部件背景资源
+    public static class WidgetBgResources {
+        // 2x小部件的背景资源数组
+        private final static int[] BG_2X_RESOURCES = new int[]{
+                R.drawable.widget_2x_yellow,
+                R.drawable.widget_2x_blue,
+                R.drawable.widget_2x_white,
+                R.drawable.widget_2x_green,
+                R.drawable.widget_2x_red,
+        };
+        // 4x小部件的背景资源数组
+        private final static int[] BG_4X_RESOURCES = new int[]{
+                R.drawable.widget_4x_yellow,
+                R.drawable.widget_4x_blue,
+                R.drawable.widget_4x_white,
+                R.drawable.widget_4x_green,
+                R.drawable.widget_4x_red
+        };
+
+        // 根据ID获取2x小部件的背景资源
+        public static int getWidget2xBgResource(int id) {
+            return BG_2X_RESOURCES[id];
+        }
+
+        // 根据ID获取4x小部件的背景资源
+        public static int getWidget4xBgResource(int id) {
+            return BG_4X_RESOURCES[id];
+        }
+    }
+
+    // 内部类，用于管理文本外观资源
+    public static class TextAppearanceResources {
+        // 文本外观资源数组
+        private final static int[] TEXTAPPEARANCE_RESOURCES = new int[]{
+                R.style.TextAppearanceNormal,
+                R.style.TextAppearanceMedium,
+                R.style.TextAppearanceLarge,
+                R.style.TextAppearanceSuper
+        };
+
+        // 根据ID获取文本外观资源
+        public static int getTexAppearanceResource(int id) {
+            /**
+             * HACKME: 修复在共享偏好设置中存储资源ID的问题。
+             * 如果ID大于资源数组的长度，则返回默认字体大小。
+             */
+            if (id >= TEXTAPPEARANCE_RESOURCES.length) {
+                return BG_DEFAULT_FONT_SIZE;
+            }
+            return TEXTAPPEARANCE_RESOURCES[id];
+        }
+
+        // 获取文本外观资源数组的长度
+        public static int getResourcesSize() {
+            return TEXTAPPEARANCE_RESOURCES.length;
+        }
+    }
+}