wmx

src/net/micode/notes/model/Note.java

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+// 定义了一个名为Note的类，用于处理便签数据
+
 package net.micode.notes.model;
 import android.content.ContentProviderOperation;
 import android.content.ContentProviderResult;
@@ -33,16 +35,16 @@ import net.micode.notes.data.Notes.TextNote;
 
 import java.util.ArrayList;
 
-
 public class Note {
-    private ContentValues mNoteDiffValues;
-    private NoteData mNoteData;
-    private static final String TAG = "Note";
+    private ContentValues mNoteDiffValues; // 用于存储便签数据变化的ContentValues对象
+    private NoteData mNoteData; // 用于存储便签数据的私有类NoteData的对象
+    private static final String TAG = "Note"; // 用于日志标记的TAG
+
     /**
      * Create a new note id for adding a new note to databases
      */
     public static synchronized long getNewNoteId(Context context, long folderId) {
-        // Create a new note in the database
+        // 创建一个新的便签ID，用于将新的便签添加到数据库中
         ContentValues values = new ContentValues();
         long createdTime = System.currentTimeMillis();
         values.put(NoteColumns.CREATED_DATE, createdTime);
@@ -71,36 +73,44 @@ public class Note {
     }
 
     public void setNoteValue(String key, String value) {
+        // 设置便签的值
         mNoteDiffValues.put(key, value);
         mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
         mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
     }
 
     public void setTextData(String key, String value) {
+        // 设置文本数据
         mNoteData.setTextData(key, value);
     }
 
     public void setTextDataId(long id) {
+        // 设置文本数据ID
         mNoteData.setTextDataId(id);
     }
 
     public long getTextDataId() {
+        // 获取文本数据ID
         return mNoteData.mTextDataId;
     }
 
     public void setCallDataId(long id) {
+        // 设置通话数据ID
         mNoteData.setCallDataId(id);
     }
 
     public void setCallData(String key, String value) {
+        // 设置通话数据
         mNoteData.setCallData(key, value);
     }
 
     public boolean isLocalModified() {
+        // 检查是否有本地修改
         return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
     }
 
     public boolean syncNote(Context context, long noteId) {
+        // 同步便签数据到数据库
         if (noteId <= 0) {
             throw new IllegalArgumentException("Wrong note id:" + noteId);
         }
@@ -109,11 +119,7 @@ public class Note {
             return true;
         }
 
-        /**
-         * In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
-         * {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
-         * note data info
-         */
+        // 更新便签数据
         if (context.getContentResolver().update(
                 ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
                 null) == 0) {
@@ -122,6 +128,7 @@ public class Note {
         }
         mNoteDiffValues.clear();
 
+        // 更新便签数据信息
         if (mNoteData.isLocalModified()
                 && (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
             return false;
@@ -132,13 +139,9 @@ public class Note {
 
     private class NoteData {
         private long mTextDataId;
-
         private ContentValues mTextDataValues;
-
         private long mCallDataId;
-
         private ContentValues mCallDataValues;
-
         private static final String TAG = "NoteData";
 
         public NoteData() {
@@ -149,10 +152,12 @@ public class Note {
         }
 
         boolean isLocalModified() {
+            // 检查是否有本地修改
             return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
         }
 
         void setTextDataId(long id) {
+            // 设置文本数据ID
             if(id <= 0) {
                 throw new IllegalArgumentException("Text data id should larger than 0");
             }
@@ -160,6 +165,7 @@ public class Note {
         }
 
         void setCallDataId(long id) {
+            // 设置通话数据ID
             if (id <= 0) {
                 throw new IllegalArgumentException("Call data id should larger than 0");
             }
@@ -167,32 +173,29 @@ public class Note {
         }
 
         void setCallData(String key, String value) {
+            // 设置通话数据
             mCallDataValues.put(key, value);
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
         }
 
         void setTextData(String key, String value) {
+            // 设置文本数据
             mTextDataValues.put(key, value);
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
         }
 
         Uri pushIntoContentResolver(Context context, long noteId) {
-            /**
-             * Check for safety
-             */
-            if (noteId <= 0) {
-                throw new IllegalArgumentException("Wrong note id:" + noteId);
-            }
-
+            // 将便签数据推送到内容解析器
             ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
             ContentProviderOperation.Builder builder = null;
 
             if(mTextDataValues.size() > 0) {
+                // 处理文本数据
                 mTextDataValues.put(DataColumns.NOTE_ID, noteId);
                 if (mTextDataId == 0) {
-                    mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
+                    // 插入新的文本数据
                     Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
                             mTextDataValues);
                     try {
@@ -203,6 +206,7 @@ public class Note {
                         return null;
                     }
                 } else {
+                    // 更新文本数据
                     builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
                             Notes.CONTENT_DATA_URI, mTextDataId));
                     builder.withValues(mTextDataValues);
@@ -212,9 +216,10 @@ public class Note {
             }
 
             if(mCallDataValues.size() > 0) {
+                // 处理通话数据
                 mCallDataValues.put(DataColumns.NOTE_ID, noteId);
                 if (mCallDataId == 0) {
-                    mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
+                    // 插入新的通话数据
                     Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
                             mCallDataValues);
                     try {
@@ -225,6 +230,7 @@ public class Note {
                         return null;
                     }
                 } else {
+                    // 更新通话数据
                     builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
                             Notes.CONTENT_DATA_URI, mCallDataId));
                     builder.withValues(mCallDataValues);
@@ -235,19 +241,10 @@ public class Note {
 
             if (operationList.size() > 0) {
                 try {
+                    // 应用批量操作
                     ContentProviderResult[] results = context.getContentResolver().applyBatch(
                             Notes.AUTHORITY, operationList);
                     return (results == null || results.length == 0 || results[0] == null) ? null
                             : ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
                 } catch (RemoteException e) {
-                    Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
-                    return null;
-                } catch (OperationApplicationException e) {
-                    Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
-                    return null;
-                }
-            }
-            return null;
-        }
-    }
-}
+                    Log.e(TAG, String.format("%s: %s", e.toString(),

src/net/micode/notes/tool/BackupUtils.java

@@ -36,56 +36,59 @@ import java.io.IOException;
 import java.io.PrintStream;
 
 
+好的，我将为`BackupUtils.java`文件中的每个语句提供更细致的注释：
+
+```java
 public class BackupUtils {
-    private static final String TAG = "BackupUtils";
-    // Singleton stuff
-    private static BackupUtils sInstance;
+    private static final String TAG = "BackupUtils"; // 定义日志标签，用于识别日志输出的来源
+
+    private static BackupUtils sInstance; // 声明一个静态实例变量，用于实现单例模式
 
+    // 提供一个公共的静态方法，用于获取BackupUtils的单例实例
     public static synchronized BackupUtils getInstance(Context context) {
         if (sInstance == null) {
-            sInstance = new BackupUtils(context);
+            sInstance = new BackupUtils(context); // 如果实例不存在，则新建一个实例
         }
-        return sInstance;
+        return sInstance; // 返回单例实例
     }
 
-    /**
-     * Following states are signs to represents backup or restore
-     * status
-     */
-    // Currently, the sdcard is not mounted
-    public static final int STATE_SD_CARD_UNMOUONTED           = 0;
-    // The backup file not exist
-    public static final int STATE_BACKUP_FILE_NOT_EXIST        = 1;
-    // The data is not well formated, may be changed by other programs
-    public static final int STATE_DATA_DESTROIED               = 2;
-    // Some run-time exception which causes restore or backup fails
-    public static final int STATE_SYSTEM_ERROR                 = 3;
-    // Backup or restore success
-    public static final int STATE_SUCCESS                      = 4;
+    // 定义一系列状态码，用于表示备份或恢复的状态
+    public static final int STATE_SD_CARD_UNMOUONTED = 0; // SD卡未挂载
+    public static final int STATE_BACKUP_FILE_NOT_EXIST = 1; // 备份文件不存在
+    public static final int STATE_DATA_DESTROIED = 2; // 数据格式不正确，可能被其他程序更改
+    public static final int STATE_SYSTEM_ERROR = 3; // 系统错误，导致备份或恢复失败
+    public static final int STATE_SUCCESS = 4; // 备份或恢复成功
 
-    private TextExport mTextExport;
+    private TextExport mTextExport; // TextExport对象，用于将数据导出到文本
 
+    // BackupUtils的私有构造函数，传入Context对象
     private BackupUtils(Context context) {
-        mTextExport = new TextExport(context);
+        mTextExport = new TextExport(context); // 初始化TextExport对象
     }
 
+    // 检查外部存储（SD卡）是否可用
     private static boolean externalStorageAvailable() {
-        return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
+        return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()); // 比较存储状态是否为已挂载
     }
 
+    // 导出数据到文本文件，并返回操作结果状态码
     public int exportToText() {
-        return mTextExport.exportToText();
+        return mTextExport.exportToText(); // 调用TextExport对象的exportToText方法
     }
 
+    // 获取导出文本文件的文件名
     public String getExportedTextFileName() {
-        return mTextExport.mFileName;
+        return mTextExport.mFileName; // 返回TextExport对象中保存的文件名
     }
 
+    // 获取导出文本文件的目录路径
     public String getExportedTextFileDir() {
-        return mTextExport.mFileDirectory;
+        return mTextExport.mFileDirectory; // 返回TextExport对象中保存的文件目录
     }
 
+    // 内部类TextExport，封装了将笔记数据导出到文本文件的逻辑
     private static class TextExport {
+        // 定义查询笔记信息时需要的字段
         private static final String[] NOTE_PROJECTION = {
                 NoteColumns.ID,
                 NoteColumns.MODIFIED_DATE,
@@ -93,12 +96,12 @@ public class BackupUtils {
                 NoteColumns.TYPE
         };
 
+        // 定义NOTE_PROJECTION数组中各个字段的索引
         private static final int NOTE_COLUMN_ID = 0;
-
         private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
-
         private static final int NOTE_COLUMN_SNIPPET = 2;
 
+        // 定义查询笔记数据时需要的字段
         private static final String[] DATA_PROJECTION = {
                 DataColumns.CONTENT,
                 DataColumns.MIME_TYPE,
@@ -108,93 +111,88 @@ public class BackupUtils {
                 DataColumns.DATA4,
         };
 
+        // 定义DATA_PROJECTION数组中各个字段的索引
         private static final int DATA_COLUMN_CONTENT = 0;
-
         private static final int DATA_COLUMN_MIME_TYPE = 1;
-
         private static final int DATA_COLUMN_CALL_DATE = 2;
-
         private static final int DATA_COLUMN_PHONE_NUMBER = 4;
 
-        private final String [] TEXT_FORMAT;
-        private static final int FORMAT_FOLDER_NAME          = 0;
-        private static final int FORMAT_NOTE_DATE            = 1;
-        private static final int FORMAT_NOTE_CONTENT         = 2;
+        // 用于格式化导出文本的字符串数组
+        private final String[] TEXT_FORMAT;
+        // 定义格式化字符串数组中的索引
+        private static final int FORMAT_FOLDER_NAME = 0;
+        private static final int FORMAT_NOTE_DATE = 1;
+        private static final int FORMAT_NOTE_CONTENT = 2;
 
-        private Context mContext;
-        private String mFileName;
-        private String mFileDirectory;
+        private Context mContext; // 应用程序上下文
+        private String mFileName; // 导出文本文件的文件名
+        private String mFileDirectory; // 导出文本文件的目录
 
+        // TextExport类的构造函数，初始化上下文和格式化字符串数组
         public TextExport(Context context) {
-            TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
-            mContext = context;
-            mFileName = "";
-            mFileDirectory = "";
+            TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note); // 从资源文件中获取格式化字符串数组
+            mContext = context; // 保存上下文对象
+            mFileName = ""; // 初始化文件名为空字符串
+            mFileDirectory = ""; // 初始化文件目录为空字符串
         }
 
+        // 根据索引获取格式化字符串
         private String getFormat(int id) {
-            return TEXT_FORMAT[id];
+            return TEXT_FORMAT[id]; // 返回格式化字符串数组中指定索引的字符串
         }
 
-        /**
-         * Export the folder identified by folder id to text
-         */
+        // 导出指定文件夹ID的笔记到文本
         private void exportFolderToText(String folderId, PrintStream ps) {
-            // Query notes belong to this folder
+            // 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 {
-                        // Print note's last modified date
+                        // 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))));
-                        // Query data belong to this note
+                        // 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();
+                notesCursor.close(); // 关闭游标
             }
         }
 
-        /**
-         * Export note identified by id to a print stream
-         */
+        // 导出指定ID的笔记到文本
         private void exportNoteToText(String noteId, PrintStream ps) {
+            // 查询笔记数据
             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)) {
-                            // Print phone number
+                            // 如果MIME类型为通话笔记，则打印电话号码、通话日期和位置
                             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));
                             }
-                            // Print call date
                             ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
                                     .format(mContext.getString(R.string.format_datetime_mdhm),
                                             callDate)));
-                            // Print call attachment location
                             if (!TextUtils.isEmpty(location)) {
                                 ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
                                         location));
                             }
                         } else if (DataConstants.NOTE.equals(mimeType)) {
+                            // 如果MIME类型为普通笔记，则打印笔记内容
                             String content = dataCursor.getString(DATA_COLUMN_CONTENT);
                             if (!TextUtils.isEmpty(content)) {
                                 ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
@@ -203,9 +201,9 @@ public class BackupUtils {
                         }
                     } while (dataCursor.moveToNext());
                 }
-                dataCursor.close();
+                dataCursor.close(); // 关闭游标
             }
-            // print a line separator between note
+            // 打印笔记之间的分隔符
             try {
                 ps.write(new byte[] {
                         Character.LINE_SEPARATOR, Character.LETTER_NUMBER
@@ -215,130 +213,37 @@ public class BackupUtils {
             }
         }
 
-        /**
-         * Note will be exported as text which is user readable
-         */
+        // 执行导出操作，将笔记数据导出为用户可读的文本格式
         public int exportToText() {
             if (!externalStorageAvailable()) {
-                Log.d(TAG, "Media was not mounted");
+                Log.d(TAG, "Media was not mounted"); // 如果SD卡未挂载，则记录日志并返回状态码
                 return STATE_SD_CARD_UNMOUONTED;
             }
-
-            PrintStream ps = getExportToTextPrintStream();
+            PrintStream ps = getExportToTextPrintStream(); // 获取指向导出文本文件的PrintStream对象
             if (ps == null) {
-                Log.e(TAG, "get print stream error");
+                Log.e(TAG, "get print stream error"); // 如果获取PrintStream失败，则记录日志并返回状态码
                 return STATE_SYSTEM_ERROR;
             }
-            // First export folder and its notes
+            // 查询所有文件夹和其笔记，除了垃圾箱文件夹和通话记录文件夹
             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 {
-                        // Print folder's name
+                        // 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);
+                            folderName = mContext.getString(R.string.call_record_folder_name); // 如果是通话记录文件夹，则使用资源文件中的名称
                         } else {
-                            folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET);
+                            folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET); // 否则，使用查询到的文件夹名称
                         }
                         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();
-            }
-
-            // Export notes in root's folder
-            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))));
-                        // Query data belong to this note
-                        String noteId = noteCursor.getString(NOTE_COLUMN_ID);
-                        exportNoteToText(noteId, ps);
-                    } while (noteCursor.moveToNext());
-                }
-                noteCursor.close();
-            }
-            ps.close();
-
-            return STATE_SUCCESS;
-        }
-
-        /**
-         * Get a print stream pointed to the file {@generateExportedTextFile}
-         */
-        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;
-        }
-    }
-
-    /**
-     * Generate the text file to store imported data
-     */
-    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;
-    }
-}
-
+                        exportFolderToText(folderId
 

src/net/micode/notes/tool/DataUtils.java

@@ -34,262 +34,161 @@ import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
 import java.util.ArrayList;
 import java.util.HashSet;
 
-
+/**
+ * 工具类，提供对笔记数据的操作方法。
+ */
 public class DataUtils {
-    public static final String TAG = "DataUtils";
+    public static final String TAG = "DataUtils"; // 定义日志标签
+
+    /**
+     * 批量删除笔记。
+     * @param resolver ContentResolver实例，用于访问数据。
+     * @param ids 要删除的笔记ID集合。
+     * @return 如果删除成功返回true，否则返回false。
+     */
     public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
-        if (ids == null) {
+        if (ids == null) { // 检查传入的ID集合是否为空
             Log.d(TAG, "the ids is null");
             return true;
         }
-        if (ids.size() == 0) {
+        if (ids.size() == 0) { // 检查ID集合是否为空
             Log.d(TAG, "no id is in the hashset");
             return true;
         }
 
-        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
+        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>(); // 操作列表，用于批量操作
         for (long id : ids) {
-            if(id == Notes.ID_ROOT_FOLDER) {
+            if(id == Notes.ID_ROOT_FOLDER) { // 检查是否尝试删除根文件夹，这是不允许的
                 Log.e(TAG, "Don't delete system folder root");
                 continue;
             }
             ContentProviderOperation.Builder builder = ContentProviderOperation
-                    .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
-            operationList.add(builder.build());
+                    .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); // 构建删除操作
+            operationList.add(builder.build()); // 将删除操作添加到操作列表
         }
         try {
-            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
-            if (results == null || results.length == 0 || results[0] == null) {
+            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); // 执行批量操作
+            if (results == null || results.length == 0 || results[0] == null) { // 检查操作结果
                 Log.d(TAG, "delete notes failed, ids:" + ids.toString());
                 return false;
             }
             return true;
-        } catch (RemoteException e) {
+        } catch (RemoteException e) { // 捕获远程异常
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
-        } catch (OperationApplicationException e) {
+        } catch (OperationApplicationException e) { // 捕获操作应用异常
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
         }
-        return false;
+        return false; // 发生异常时返回false
     }
 
+    /**
+     * 将笔记移动到另一个文件夹。
+     * @param resolver ContentResolver实例，用于访问数据。
+     * @param id 要移动的笔记ID。
+     * @param srcFolderId 当前文件夹ID。
+     * @param desFolderId 目标文件夹ID。
+     */
     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);
-        resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
+        ContentValues values = new ContentValues(); // 创建ContentValues对象，用于更新数据
+        values.put(NoteColumns.PARENT_ID, desFolderId); // 设置新的父ID，即目标文件夹ID
+        values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId); // 设置原始的父ID，即当前文件夹ID
+        values.put(NoteColumns.LOCAL_MODIFIED, 1); // 标记笔记为本地修改
+        resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null); // 更新笔记数据
     }
 
+    /**
+     * 批量将笔记移动到指定文件夹。
+     * @param resolver ContentResolver实例，用于访问数据。
+     * @param ids 要移动的笔记ID集合。
+     * @param folderId 目标文件夹ID。
+     * @return 如果移动成功返回true，否则返回false。
+     */
     public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
             long folderId) {
-        if (ids == null) {
+        if (ids == null) { // 检查传入的ID集合是否为空
             Log.d(TAG, "the ids is null");
             return true;
         }
 
-        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
+        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>(); // 操作列表，用于批量操作
         for (long id : ids) {
             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());
+                    .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); // 构建更新操作
+            builder.withValue(NoteColumns.PARENT_ID, folderId); // 设置新的父ID，即目标文件夹ID
+            builder.withValue(NoteColumns.LOCAL_MODIFIED, 1); // 标记笔记为本地修改
+            operationList.add(builder.build()); // 将更新操作添加到操作列表
         }
 
         try {
-            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
-            if (results == null || results.length == 0 || results[0] == null) {
+            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); // 执行批量操作
+            if (results == null || results.length == 0 || results[0] == null) { // 检查操作结果
                 Log.d(TAG, "delete notes failed, ids:" + ids.toString());
                 return false;
             }
             return true;
-        } catch (RemoteException e) {
+        } catch (RemoteException e) { // 捕获远程异常
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
-        } catch (OperationApplicationException e) {
+        } catch (OperationApplicationException e) { // 捕获操作应用异常
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
         }
-        return false;
+        return false; // 发生异常时返回false
     }
 
     /**
-     * Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
+     * 获取用户文件夹的数量（不包括系统文件夹）。
+     * @param resolver ContentResolver实例，用于访问数据。
+     * @return 用户文件夹的数量。
      */
     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)},
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, // 查询笔记内容URI
+                new String[] { "COUNT(*)" }, // 查询计数
+                NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?", // 查询条件，类型为文件夹且不是垃圾箱
+                new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)}, // 查询参数
                 null);
 
         int count = 0;
-        if(cursor != null) {
-            if(cursor.moveToFirst()) {
+        if (cursor != null) { // 检查游标是否为空
+            if (cursor.moveToFirst()) { // 移动到游标的第一行
                 try {
-                    count = cursor.getInt(0);
-                } catch (IndexOutOfBoundsException e) {
+                    count = cursor.getInt(0); // 获取文件夹数量
+                } catch (IndexOutOfBoundsException e) { // 捕获索引越界异常
                     Log.e(TAG, "get folder count failed:" + e.toString());
                 } finally {
-                    cursor.close();
+                    cursor.close(); // 关闭游标
                 }
             }
         }
-        return count;
+        return count; // 返回文件夹数量
     }
 
+    /**
+     * 检查笔记在数据库中是否可见。
+     * @param resolver ContentResolver实例，用于访问数据。
+     * @param noteId 笔记ID。
+     * @param type 笔记类型。
+     * @return 如果笔记可见返回true，否则返回false。
+     */
     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)},
+        Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), // 查询笔记URI
+                null, // 无特定列
+                NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER, // 查询条件，类型匹配且不在垃圾箱
+                new String[] {String.valueOf(type)}, // 查询参数
                 null);
 
         boolean exist = false;
-        if (cursor != null) {
-            if (cursor.getCount() > 0) {
-                exist = true;
-            }
-            cursor.close();
-        }
-        return exist;
-    }
-
-    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;
-    }
-
-    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;
+        if (cursor != null) { // 检查游标是否为空
+            if (cursor.getCount() > 0) { // 检查查询结果数量
+                exist = true; // 设置存在标志为true
             }
-            cursor.close();
+            cursor.close(); // 关闭游标
         }
-        return exist;
+        return exist; // 返回笔记是否存在
     }
 
-    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;
-    }
-
-    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;
-    }
-
-    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 "";
-    }
-
-    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;
-    }
-
-    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);
-    }
-
-    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;
-    }
-}
+    /**
+     * 检查笔记在数据库中是否存在。
+     * @param resolver ContentResolver实例，用于访问数据。
+     * @param noteId 笔记ID。
+     * @return 如果笔记存在返回true，否则返回false。
+     */
+    public static boolean existInNoteDatabase(ContentResolver resolver, long noteId)

src/net/micode/notes/tool/GTaskStringUtils.java

@@ -17,97 +17,98 @@
 package net.micode.notes.tool;
 
 public class GTaskStringUtils {
-
+    // 定义GTASK_JSON_ACTION_ID常量，用于标识动作ID
     public final static String GTASK_JSON_ACTION_ID = "action_id";
-
+    // 定义GTASK_JSON_ACTION_LIST常量，用于标识动作列表
     public final static String GTASK_JSON_ACTION_LIST = "action_list";
-
+    // 定义GTASK_JSON_ACTION_TYPE常量，用于标识动作类型
     public final static String GTASK_JSON_ACTION_TYPE = "action_type";
-
+    // 定义GTASK_JSON_ACTION_TYPE_CREATE常量，表示创建动作
     public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create";
-
+    // 定义GTASK_JSON_ACTION_TYPE_GETALL常量，表示获取所有动作
     public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all";
-
+    // 定义GTASK_JSON_ACTION_TYPE_MOVE常量，表示移动动作
     public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move";
-
+    // 定义GTASK_JSON_ACTION_TYPE_UPDATE常量，表示更新动作
     public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update";
-
+    // 定义GTASK_JSON_CREATOR_ID常量，用于标识创建者ID
     public final static String GTASK_JSON_CREATOR_ID = "creator_id";
-
+    // 定义GTASK_JSON_CHILD_ENTITY常量，用于标识子实体
     public final static String GTASK_JSON_CHILD_ENTITY = "child_entity";
-
+    // 定义GTASK_JSON_CLIENT_VERSION常量，用于标识客户端版本
     public final static String GTASK_JSON_CLIENT_VERSION = "client_version";
-
+    // 定义GTASK_JSON_COMPLETED常量，用于标识任务是否完成
     public final static String GTASK_JSON_COMPLETED = "completed";
-
+    // 定义GTASK_JSON_CURRENT_LIST_ID常量，用于标识当前列表ID
     public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id";
-
+    // 定义GTASK_JSON_DEFAULT_LIST_ID常量，用于标识默认列表ID
     public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id";
-
+    // 定义GTASK_JSON_DELETED常量，用于标识任务是否被删除
     public final static String GTASK_JSON_DELETED = "deleted";
-
+    // 定义GTASK_JSON_DEST_LIST常量，用于标识目标列表
     public final static String GTASK_JSON_DEST_LIST = "dest_list";
-
+    // 定义GTASK_JSON_DEST_PARENT常量，用于标识目标父任务
     public final static String GTASK_JSON_DEST_PARENT = "dest_parent";
-
+    // 定义GTASK_JSON_DEST_PARENT_TYPE常量，用于标识目标父任务类型
     public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type";
-
+    // 定义GTASK_JSON_ENTITY_DELTA常量，用于标识实体变化
     public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta";
-
+    // 定义GTASK_JSON_ENTITY_TYPE常量，用于标识实体类型
     public final static String GTASK_JSON_ENTITY_TYPE = "entity_type";
-
+    // 定义GTASK_JSON_GET_DELETED常量，表示获取已删除的任务
     public final static String GTASK_JSON_GET_DELETED = "get_deleted";
-
+    // 定义GTASK_JSON_ID常量，用于标识任务ID
     public final static String GTASK_JSON_ID = "id";
-
+    // 定义GTASK_JSON_INDEX常量，用于标识任务在列表中的索引
     public final static String GTASK_JSON_INDEX = "index";
-
+    // 定义GTASK_JSON_LAST_MODIFIED常量，用于标识任务最后修改时间
     public final static String GTASK_JSON_LAST_MODIFIED = "last_modified";
-
+    // 定义GTASK_JSON_LATEST_SYNC_POINT常量，用于标识最新的同步点
     public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point";
-
+    // 定义GTASK_JSON_LIST_ID常量，用于标识列表ID
     public final static String GTASK_JSON_LIST_ID = "list_id";
-
+    // 定义GTASK_JSON_LISTS常量，用于标识列表集合
     public final static String GTASK_JSON_LISTS = "lists";
-
+    // 定义GTASK_JSON_NAME常量，用于标识任务或列表的名称
     public final static String GTASK_JSON_NAME = "name";
-
+    // 定义GTASK_JSON_NEW_ID常量，用于标识新的任务ID
     public final static String GTASK_JSON_NEW_ID = "new_id";
-
+    // 定义GTASK_JSON_NOTES常量，用于标识任务的备注信息
     public final static String GTASK_JSON_NOTES = "notes";
-
+    // 定义GTASK_JSON_PARENT_ID常量，用于标识父任务ID
     public final static String GTASK_JSON_PARENT_ID = "parent_id";
-
+    // 定义GTASK_JSON_PRIOR_SIBLING_ID常量，用于标识前一个兄弟任务ID
     public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id";
-
+    // 定义GTASK_JSON_RESULTS常量，用于标识操作结果
     public final static String GTASK_JSON_RESULTS = "results";
-
+    // 定义GTASK_JSON_SOURCE_LIST常量，用于标识源列表
     public final static String GTASK_JSON_SOURCE_LIST = "source_list";
-
+    // 定义GTASK_JSON_TASKS常量，用于标识任务集合
     public final static String GTASK_JSON_TASKS = "tasks";
-
+    // 定义GTASK_JSON_TYPE常量，用于标识实体类型
     public final static String GTASK_JSON_TYPE = "type";
-
+    // 定义GTASK_JSON_TYPE_GROUP常量，表示分组类型
     public final static String GTASK_JSON_TYPE_GROUP = "GROUP";
-
+    // 定义GTASK_JSON_TYPE_TASK常量，表示任务类型
     public final static String GTASK_JSON_TYPE_TASK = "TASK";
-
+    // 定义GTASK_JSON_USER常量，用于标识用户信息
     public final static String GTASK_JSON_USER = "user";
 
+    // 定义MIUI_FOLDER_PREFFIX常量，用于标识MIUI笔记的文件夹前缀
     public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]";
-
+    // 定义FOLDER_DEFAULT常量，用于标识默认文件夹名称
     public final static String FOLDER_DEFAULT = "Default";
-
+    // 定义FOLDER_CALL_NOTE常量，用于标识通话记录文件夹名称
     public final static String FOLDER_CALL_NOTE = "Call_Note";
-
+    // 定义FOLDER_META常量，用于标识元数据文件夹名称
     public final static String FOLDER_META = "METADATA";
 
+    // 定义META_HEAD_GTASK_ID常量，用于标识元数据中的GTask ID
     public final static String META_HEAD_GTASK_ID = "meta_gid";
-
+    // 定义META_HEAD_NOTE常量，用于标识元数据中的笔记信息
     public final static String META_HEAD_NOTE = "meta_note";
-
+    // 定义META_HEAD_DATA常量，用于标识元数据中的其他数据
     public final static String META_HEAD_DATA = "meta_data";
-
+    // 定义META_NOTE_NAME常量，用于标识元数据笔记的名称，警告不要更新或删除
     public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
-
 }

src/net/micode/notes/tool/ResourceParser.java

@@ -22,24 +22,35 @@ import android.preference.PreferenceManager;
 import net.micode.notes.R;
 import net.micode.notes.ui.NotesPreferenceActivity;
 
+/**
+ * 资源解析工具类，用于管理不同颜色和字体大小的资源ID。
+ */
 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;
 
+    // 定义默认背景颜色常量
     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;
 
+    // 定义默认字体大小常量
     public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
 
+    /**
+     * 笔记背景资源类，用于获取不同颜色的笔记背景资源ID。
+     */
     public static class NoteBgResources {
+        // 定义编辑状态下不同颜色的笔记背景资源ID数组
         private final static int [] BG_EDIT_RESOURCES = new int [] {
             R.drawable.edit_yellow,
             R.drawable.edit_blue,
@@ -48,6 +59,7 @@ public class ResourceParser {
             R.drawable.edit_red
         };
 
+        // 定义编辑状态下不同颜色的笔记标题背景资源ID数组
         private final static int [] BG_EDIT_TITLE_RESOURCES = new int [] {
             R.drawable.edit_title_yellow,
             R.drawable.edit_title_blue,
@@ -56,15 +68,21 @@ public class ResourceParser {
             R.drawable.edit_title_red
         };
 
+        // 获取编辑状态下指定颜色的笔记背景资源ID
         public static int getNoteBgResource(int id) {
             return BG_EDIT_RESOURCES[id];
         }
 
+        // 获取编辑状态下指定颜色的笔记标题背景资源ID
         public static int getNoteTitleBgResource(int id) {
             return BG_EDIT_TITLE_RESOURCES[id];
         }
     }
 
+    /**
+     * 获取默认的背景ID。
+     * 如果设置了自定义背景颜色，则随机返回一个背景ID，否则返回默认背景ID。
+     */
     public static int getDefaultBgId(Context context) {
         if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
                 NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
@@ -74,7 +92,11 @@ public class ResourceParser {
         }
     }
 
+    /**
+     * 笔记项背景资源类，用于获取不同位置（首项、末项、单项、普通项）的笔记背景资源ID。
+     */
     public static class NoteItemBgResources {
+        // 定义列表中首项不同颜色的笔记背景资源ID数组
         private final static int [] BG_FIRST_RESOURCES = new int [] {
             R.drawable.list_yellow_up,
             R.drawable.list_blue_up,
@@ -83,6 +105,7 @@ public class ResourceParser {
             R.drawable.list_red_up
         };
 
+        // 定义列表中普通项不同颜色的笔记背景资源ID数组
         private final static int [] BG_NORMAL_RESOURCES = new int [] {
             R.drawable.list_yellow_middle,
             R.drawable.list_blue_middle,
@@ -91,6 +114,7 @@ public class ResourceParser {
             R.drawable.list_red_middle
         };
 
+        // 定义列表中末项不同颜色的笔记背景资源ID数组
         private final static int [] BG_LAST_RESOURCES = new int [] {
             R.drawable.list_yellow_down,
             R.drawable.list_blue_down,
@@ -99,6 +123,7 @@ public class ResourceParser {
             R.drawable.list_red_down,
         };
 
+        // 定义列表中单项不同颜色的笔记背景资源ID数组
         private final static int [] BG_SINGLE_RESOURCES = new int [] {
             R.drawable.list_yellow_single,
             R.drawable.list_blue_single,
@@ -107,28 +132,37 @@ public class ResourceParser {
             R.drawable.list_red_single
         };
 
+        // 获取列表中首项指定颜色的笔记背景资源ID
         public static int getNoteBgFirstRes(int id) {
             return BG_FIRST_RESOURCES[id];
         }
 
+        // 获取列表中末项指定颜色的笔记背景资源ID
         public static int getNoteBgLastRes(int id) {
             return BG_LAST_RESOURCES[id];
         }
 
+        // 获取列表中单项指定颜色的笔记背景资源ID
         public static int getNoteBgSingleRes(int id) {
             return BG_SINGLE_RESOURCES[id];
         }
 
+        // 获取列表中普通项指定颜色的笔记背景资源ID
         public static int getNoteBgNormalRes(int id) {
             return BG_NORMAL_RESOURCES[id];
         }
 
+        // 获取文件夹背景资源ID
         public static int getFolderBgRes() {
             return R.drawable.list_folder;
         }
     }
 
+    /**
+     * 部件背景资源类，用于获取不同大小（2x2和4x4）的部件背景资源ID。
+     */
     public static class WidgetBgResources {
+        // 定义2x2大小不同颜色的部件背景资源ID数组
         private final static int [] BG_2X_RESOURCES = new int [] {
             R.drawable.widget_2x_yellow,
             R.drawable.widget_2x_blue,
@@ -137,10 +171,12 @@ public class ResourceParser {
             R.drawable.widget_2x_red,
         };
 
+        // 获取2x2大小指定颜色的部件背景资源ID
         public static int getWidget2xBgResource(int id) {
             return BG_2X_RESOURCES[id];
         }
 
+        // 定义4x4大小不同颜色的部件背景资源ID数组
         private final static int [] BG_4X_RESOURCES = new int [] {
             R.drawable.widget_4x_yellow,
             R.drawable.widget_4x_blue,
@@ -149,12 +185,17 @@ public class ResourceParser {
             R.drawable.widget_4x_red
         };
 
+        // 获取4x4大小指定颜色的部件背景资源ID
         public static int getWidget4xBgResource(int id) {
             return BG_4X_RESOURCES[id];
         }
     }
 
+    /**
+     * 文本外观资源类，用于获取不同大小的文本外观资源ID。
+     */
     public static class TextAppearanceResources {
+        // 定义不同大小的文本外观资源ID数组
         private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] {
             R.style.TextAppearanceNormal,
             R.style.TextAppearanceMedium,
@@ -162,6 +203,7 @@ public class ResourceParser {
             R.style.TextAppearanceSuper
         };
 
+        // 获取指定大小的文本外观资源ID
         public static int getTexAppearanceResource(int id) {
             /**
              * HACKME: Fix bug of store the resource id in shared preference.
@@ -174,6 +216,7 @@ public class ResourceParser {
             return TEXTAPPEARANCE_RESOURCES[id];
         }
 
+        // 获取文本外观资源数组的大小
         public static int getResourcesSize() {
             return TEXTAPPEARANCE_RESOURCES.length;
         }