diff --git a/src/BackupUtils.java b/src/BackupUtils.java
deleted file mode 100644
index 8fc1c3f..0000000
--- a/src/BackupUtils.java
+++ /dev/null
@@ -1,440 +0,0 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-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;
-
-
-public class BackupUtils {
-    private static final String TAG = "BackupUtils";
-    // 单例模式相关变量
-    private static BackupUtils sInstance;
-
-    /**
-     * 获取BackupUtils的单例实例。
-     *
-     * @param context 上下文对象，用于访问应用全局功能。
-     * @return 返回BackupUtils的单例实例。
-     */
-    public static synchronized BackupUtils getInstance(Context context) {
-        if (sInstance == null) {
-            sInstance = new BackupUtils(context);
-        }
-        return sInstance;
-    }
-
-    /**
-     * 定义备份或恢复状态的标志。
-     */
-    // 当前，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，可能被其他程序更改
-    public static final int STATE_DATA_DESTROIED = 2;
-    // 运行时异常导致恢复或备份失败
-    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;
-
-    /**
-     * BackupUtils的私有构造函数。
-     *
-     * @param context 上下文对象，用于初始化文本导出功能。
-     */
-    private BackupUtils(Context context) {
-        mTextExport = new TextExport(context);
-    }
-
-    /**
-     * 检查外部存储是否可用。
-     *
-     * @return 如果外部存储可用返回true，否则返回false。
-     */
-    private static boolean externalStorageAvailable() {
-        return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
-    }
-
-    /**
-     * 导出数据到文本文件。
-     *
-     * @return 返回导出操作的状态码，详见STATE_*常量。
-     */
-    public int exportToText() {
-        return mTextExport.exportToText();
-    }
-
-    /**
-     * 获取导出的文本文件名。
-     *
-     * @return 返回导出文本文件的名称。
-     */
-    public String getExportedTextFileName() {
-        return mTextExport.mFileName;
-    }
-
-    /**
-     * 获取导出的文本文件目录。
-     *
-     * @return 返回导出文本文件所在的目录。
-     */
-    public String getExportedTextFileDir() {
-        return mTextExport.mFileDirectory;
-    }
-
-    /**
-     * 内部类TextExport，用于执行文本导出操作。
-     */
-    private static class TextExport {
-        // 查询笔记时需要的列
-        private static final String[] NOTE_PROJECTION = {
-                NoteColumns.ID,
-                NoteColumns.MODIFIED_DATE,
-                NoteColumns.SNIPPET,
-                NoteColumns.TYPE
-        };
-
-        // 笔记列的索引
-        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;
-
-        // 查询数据时需要的列
-        private static final String[] DATA_PROJECTION = {
-                DataColumns.CONTENT,
-                DataColumns.MIME_TYPE,
-                DataColumns.DATA1,
-                DataColumns.DATA2,
-                DataColumns.DATA3,
-                DataColumns.DATA4,
-        };
-
-
-        // 定义数据列的内容索引
-        private static final int DATA_COLUMN_CONTENT = 0;
-
-        // 定义数据列的MIME类型索引
-        private static final int DATA_COLUMN_MIME_TYPE = 1;
-
-        // 定义数据列的呼叫日期索引
-        private static final int DATA_COLUMN_CALL_DATE = 2;
-
-        // 定义数据列的电话号码索引
-        private static final int DATA_COLUMN_PHONE_NUMBER = 4;
-
-        // 用于导出笔记的文本格式数组
-        private final String[] TEXT_FORMAT;
-        // 定义文本格式的索引：文件夹名称
-        private static final int FORMAT_FOLDER_NAME = 0;
-        // 定义文本格式的索引：笔记日期
-        private static final int FORMAT_NOTE_DATE = 1;
-        // 定义文本格式的索引：笔记内容
-        private static final int FORMAT_NOTE_CONTENT = 2;
-
-        // 上下文对象，用于访问资源和内容解析器
-        private Context mContext;
-        // 文件名
-        private String mFileName;
-        // 文件目录
-        private String mFileDirectory;
-
-        /**
-         * 构造函数
-         *
-         * @param context 上下文对象，通常是一个Activity或者Application对象
-         */
-        public TextExport(Context context) {
-            // 初始化文本格式数组
-            TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
-            mContext = context;
-            mFileName = "";
-            mFileDirectory = "";
-        }
-
-        /**
-         * 根据索引获取文本格式
-         *
-         * @param id 索引ID
-         * @return 返回对应索引的文本格式
-         */
-        private String getFormat(int id) {
-            return TEXT_FORMAT[id];
-        }
-
-        /**
-         * 将指定文件夹的笔记导出为文本
-         *
-         * @param folderId 文件夹ID
-         * @param ps       打印流，用于写入导出的文本内容
-         */
-        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))));
-                        // 导出该笔记的内容到文本
-                        String noteId = notesCursor.getString(NOTE_COLUMN_ID);
-                        exportNoteToText(noteId, ps);
-                    } while (notesCursor.moveToNext());
-                }
-                notesCursor.close();
-            }
-        }
-
-
-        /**
-         * 将指定id的笔记导出到打印流中
-         *
-         * @param noteId 笔记的id
-         * @param ps     打印流，用于输出笔记内容
-         */
-        private void exportNoteToText(String noteId, PrintStream ps) {
-            // 查询指定id的笔记数据
-            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)) {
-                            // 处理通话记录类型的笔记
-                            String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
-                            long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
-                            String location = dataCursor.getString(DATA_COLUMN_CONTENT);
-
-                            // 打印电话号码、通话时间、附件位置
-                            if (!TextUtils.isEmpty(phoneNumber)) {
-                                ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
-                                        phoneNumber));
-                            }
-                            ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
-                                    .format(mContext.getString(R.string.format_datetime_mdhm),
-                                            callDate)));
-                            if (!TextUtils.isEmpty(location)) {
-                                ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
-                                        location));
-                            }
-                        } else if (DataConstants.NOTE.equals(mimeType)) {
-                            // 处理普通笔记类型
-                            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();
-            }
-            // 在每个笔记内容之间打印一行分隔符
-            try {
-                ps.write(new byte[]{
-                        Character.LINE_SEPARATOR, Character.LETTER_NUMBER
-                });
-            } catch (IOException e) {
-                Log.e(TAG, e.toString());
-            }
-        }
-
-        /**
-         * 将所有笔记以文本格式导出
-         *
-         * @return 导出操作的状态码，成功返回STATE_SUCCESS，否则返回其他错误状态码
-         */
-        public int exportToText() {
-            // 检查外部存储器是否可用
-            if (!externalStorageAvailable()) {
-                Log.d(TAG, "Media was not mounted");
-                return STATE_SD_CARD_UNMOUONTED;
-            }
-
-            // 获取用于导出的打印流
-            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包含的笔记
-            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);
-                        // 导出文件夹中的笔记
-                        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 {
-                        // 打印笔记的修改时间
-                        ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
-                                mContext.getString(R.string.format_datetime_mdhm),
-                                noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
-                        // 导出笔记内容
-                        String noteId = noteCursor.getString(NOTE_COLUMN_ID);
-                        exportNoteToText(noteId, ps);
-                    } while (noteCursor.moveToNext());
-                }
-                noteCursor.close();
-            }
-            ps.close();
-
-            return STATE_SUCCESS;
-        }
-
-
-        /**
-         * 获取指向文件{@generateExportedTextFile}的打印流
-         * 该方法尝试在SD卡上生成一个指定格式的文本文件，并返回指向该文件的PrintStream对象。
-         * 如果文件生成失败，则返回null。
-         *
-         * @return PrintStream 指向生成的文本文件的打印流，如果失败则返回null。
-         */
-        private PrintStream getExportToTextPrintStream() {
-            // 生成文件
-            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"); // 文件创建失败
-                return null;
-            }
-            // 更新文件名和文件目录信息
-            mFileName = file.getName();
-            mFileDirectory = mContext.getString(R.string.file_path);
-
-            PrintStream ps = null;
-            try {
-                FileOutputStream fos = new FileOutputStream(file); // 创建文件输出流
-                ps = new PrintStream(fos); // 将文件输出流包装成PrintStream
-            } catch (FileNotFoundException e) {
-                e.printStackTrace();
-                return null; // 文件未找到异常，返回null
-            } catch (NullPointerException e) {
-                e.printStackTrace();
-                return null; // 空指针异常，返回null
-            }
-            return ps; // 返回PrintStream对象
-        }
-
-    }
-
-    /**
-     * 在SD卡上生成用于存储导入数据的文本文件
-     *
-     * @param context             上下文对象，用于访问应用的资源和内容提供者
-     * @param filePathResId       路径字符串资源ID，指定文件存储的路径
-     * @param fileNameFormatResId 文件名格式字符串资源ID，用于生成带有日期的文件名
-     * @return 返回创建的文件对象，如果创建失败则返回null
-     */
-    private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
-        StringBuilder sb = new StringBuilder();
-        // 拼接SD卡的根目录
-        sb.append(Environment.getExternalStorageDirectory());
-        // 拼接从资源id获取的路径字符串
-        sb.append(context.getString(filePathResId));
-        // 创建文件目录对象
-        File filedir = new File(sb.toString());
-        // 拼接文件名，文件名包含日期信息
-        sb.append(context.getString(
-                fileNameFormatResId,
-                DateFormat.format(context.getString(R.string.format_date_ymd),
-                        System.currentTimeMillis())));
-        // 根据拼接的路径创建文件对象
-        File file = new File(sb.toString());
-
-        try {
-            // 如果文件目录不存在，则创建文件目录
-            if (!filedir.exists()) {
-                filedir.mkdir();
-            }
-            // 如果文件不存在，则创建新文件
-            if (!file.exists()) {
-                file.createNewFile();
-            }
-            return file;
-        } catch (SecurityException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-
-        // 如果遇到异常，返回null
-        return null;
-    }
-
-}
-
-
diff --git a/src/DataUtils.java b/src/DataUtils.java
deleted file mode 100644
index 4149710..0000000
--- a/src/DataUtils.java
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-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;
-
-
-public class DataUtils {
-    public static final String TAG = "DataUtils";
-
-    /**
-     * 批量删除笔记
-     *
-     * @param resolver 内容解析器
-     * @param ids      要删除的笔记ID集合
-     * @return 如果删除成功或集合为空或为null，则返回true，否则返回false
-     */
-    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;
-        }
-
-        // 构建删除操作的列表
-        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
-        for (long id : ids) {
-            if (id == Notes.ID_ROOT_FOLDER) {
-                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());
-        }
-        try {
-            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
-            // 检查删除结果
-            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
-     *
-     * @param resolver    内容解析器
-     * @param id          笔记ID
-     * @param srcFolderId 原始文件夹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);
-    }
-
-    /**
-     * 批量将笔记移动到指定文件夹
-     *
-     * @param resolver 内容解析器
-     * @param ids      要移动的笔记ID集合
-     * @param folderId 目标文件夹ID
-     * @return 如果移动成功或集合为空或为null，则返回true，否则返回false
-     */
-    public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
-                                            long folderId) {
-        if (ids == null) {
-            Log.d(TAG, "the ids is null");
-            return true;
-        }
-
-        // 构建更新操作的列表
-        ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
-        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());
-        }
-
-        try {
-            ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
-            // 检查移动结果
-            if (results == null || results.length == 0 || results[0] == null) {
-                Log.d(TAG, "move 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用户文件夹数量
-     *
-     * @param resolver 内容解析器
-     * @return 用户文件夹数量
-     */
-    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)},
-                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;
-    }
-
-    /**
-     * 检查指定类型的笔记在数据库中是否可见
-     *
-     * @param resolver 内容解析器
-     * @param noteId   笔记ID
-     * @param type     笔记类型
-     * @return 如果可见，则返回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)},
-                null);
-
-        boolean exist = false;
-        if (cursor != null) {
-            if (cursor.getCount() > 0) {
-                exist = true;
-            }
-            cursor.close();
-        }
-        return exist;
-    }
-
-    /**
-     * 检查指定的笔记ID在数据库中是否存在
-     *
-     * @param resolver 内容解析器
-     * @param noteId   笔记ID
-     * @return 如果存在，则返回true，否则返回false
-     */
-    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;
-    }
-
-    /**
-     * 检查指定的数据ID在数据库中是否存在
-     *
-     * @param resolver 内容解析器
-     * @param dataId   数据ID
-     * @return 如果存在，则返回true，否则返回false
-     */
-    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在数据库中已存在（不包括系统文件夹）
-     *
-     * @param resolver 内容解析器
-     * @param name     文件夹名称
-     * @return 如果已存在，则返回true，否则返回false
-     */
-    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;
-    }
-
-    /**
-     * 获取指定文件夹中的笔记小部件信息集合
-     *
-     * @param resolver 内容解析器
-     * @param folderId 文件夹ID
-     * @return 笔记小部件信息集合
-     */
-    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;
-    }
-
-    /**
-     * 通过笔记ID获取关联的通话号码
-     *
-     * @param resolver 内容解析器
-     * @param noteId   笔记ID
-     * @return 通话号码，如果未找到则返回空字符串
-     */
-    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对应的笔记ID
-     *
-     * @param resolver    内容解析器
-     * @param phoneNumber 电话号码
-     * @param callDate    通话日期
-     * @return 笔记ID，未找到则返回0
-     */
-    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从数据库中获取笔记的摘要。
-     *
-     * @param resolver 内容解析器，用于查询数据库。
-     * @param noteId   笔记的ID，用于定位特定的笔记。
-     * @return 笔记的摘要字符串。如果找不到对应的笔记，将抛出IllegalArgumentException。
-     */
-    public static String getSnippetById(ContentResolver resolver, long noteId) {
-        // 使用内容解析器查询特定ID的笔记的摘要
-        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 = "";
-            // 如果查询结果不为空，尝试获取摘要
-            if (cursor.moveToFirst()) {
-                snippet = cursor.getString(0);
-            }
-            // 关闭游标
-            cursor.close();
-            return snippet;
-        }
-        // 如果找不到指定ID的笔记，抛出异常
-        throw new IllegalArgumentException("Note is not found with id: " + noteId);
-    }
-
-    /**
-     * 格式化摘要字符串。
-     * 主要用于去除字符串两端的空白字符，以及截取至第一个换行符之前的内容。
-     *
-     * @param snippet 需要格式化的摘要字符串。
-     * @return 格式化后的摘要字符串。
-     */
-    public static String getFormattedSnippet(String snippet) {
-        // 如果摘要字符串不为空，进行格式化处理
-        if (snippet != null) {
-            snippet = snippet.trim(); // 去除两端的空白字符
-            int index = snippet.indexOf('\n'); // 查找第一个换行符的位置
-            if (index != -1) {
-                snippet = snippet.substring(0, index); // 截取至第一个换行符之前
-            }
-        }
-        return snippet;
-    }
-}
diff --git a/src/GTaskStringUtils.java b/src/GTaskStringUtils.java
deleted file mode 100644
index ea29672..0000000
--- a/src/GTaskStringUtils.java
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * GTaskStringUtils 类定义
- * 该类提供了一系列与GTask相关的字符串常量，用于在操作GTask数据时标识各种JSON属性。
- */
-
-package net.micode.notes.tool;
-
-public class GTaskStringUtils {
-
-    // GTask JSON对象中各种属性的键名
-    public final static String GTASK_JSON_ACTION_ID = "action_id"; // 动作ID
-    public final static String GTASK_JSON_ACTION_LIST = "action_list"; // 动作列表
-    public final static String GTASK_JSON_ACTION_TYPE = "action_type"; // 动作类型
-    public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create"; // 创建动作类型
-    public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all"; // 获取所有动作类型
-    public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move"; // 移动动作类型
-    public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update"; // 更新动作类型
-    public final static String GTASK_JSON_CREATOR_ID = "creator_id"; // 创建者ID
-    public final static String GTASK_JSON_CHILD_ENTITY = "child_entity"; // 子实体
-    public final static String GTASK_JSON_CLIENT_VERSION = "client_version"; // 客户端版本
-    public final static String GTASK_JSON_COMPLETED = "completed"; // 完成状态
-    public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id"; // 当前列表ID
-    public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id"; // 默认列表ID
-    public final static String GTASK_JSON_DELETED = "deleted"; // 删除状态
-    public final static String GTASK_JSON_DEST_LIST = "dest_list"; // 目标列表
-    public final static String GTASK_JSON_DEST_PARENT = "dest_parent"; // 目标父实体
-    public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type"; // 目标父实体类型
-    public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta"; // 实体增量
-    public final static String GTASK_JSON_ENTITY_TYPE = "entity_type"; // 实体类型
-    public final static String GTASK_JSON_GET_DELETED = "get_deleted"; // 获取已删除项
-    public final static String GTASK_JSON_ID = "id"; // ID
-    public final static String GTASK_JSON_INDEX = "index"; // 索引
-    public final static String GTASK_JSON_LAST_MODIFIED = "last_modified"; // 最后修改时间
-    public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point"; // 最新同步点
-    public final static String GTASK_JSON_LIST_ID = "list_id"; // 列表ID
-    public final static String GTASK_JSON_LISTS = "lists"; // 列表集合
-    public final static String GTASK_JSON_NAME = "name"; // 名称
-    public final static String GTASK_JSON_NEW_ID = "new_id"; // 新ID
-    public final static String GTASK_JSON_NOTES = "notes"; // 备注
-    public final static String GTASK_JSON_PARENT_ID = "parent_id"; // 父ID
-    public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id"; // 前一个兄弟ID
-    public final static String GTASK_JSON_RESULTS = "results"; // 结果
-    public final static String GTASK_JSON_SOURCE_LIST = "source_list"; // 源列表
-    public final static String GTASK_JSON_TASKS = "tasks"; // 任务集合
-    public final static String GTASK_JSON_TYPE = "type"; // 类型
-    public final static String GTASK_JSON_TYPE_GROUP = "GROUP"; // 类型：组
-    public final static String GTASK_JSON_TYPE_TASK = "TASK"; // 类型：任务
-    public final static String GTASK_JSON_USER = "user"; // 用户
-    // MIUI笔记相关的文件夹前缀和元数据键名
-    public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]"; // MIUI笔记文件夹前缀
-    public final static String FOLDER_DEFAULT = "Default"; // 默认文件夹名
-    public final static String FOLDER_CALL_NOTE = "Call_Note"; // 通话笔记文件夹名
-    public final static String FOLDER_META = "METADATA"; // 元数据文件夹名
-    // 元数据头部键名
-    public final static String META_HEAD_GTASK_ID = "meta_gid"; // GTask ID
-    public final static String META_HEAD_NOTE = "meta_note"; // 笔记内容
-    public final static String META_HEAD_DATA = "meta_data"; // 元数据
-    // 元数据笔记名称，不可更新和删除
-    public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
-}
diff --git a/src/NoteWidgetProvider.java b/src/NoteWidgetProvider.java
deleted file mode 100644
index 898de0a..0000000
--- a/src/NoteWidgetProvider.java
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * 注意：此代码段的版权归 MiCode 开源社区所有（www.micode.net）
- * 本代码遵循 Apache 2.0 许可证，您可以在 http://www.apache.org/licenses/LICENSE-2.0 查看许可证内容。
- */
-
-package net.micode.notes.widget;
-
-import android.app.PendingIntent;
-import android.appwidget.AppWidgetManager;
-import android.appwidget.AppWidgetProvider;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.Intent;
-import android.database.Cursor;
-import android.util.Log;
-import android.widget.RemoteViews;
-
-import net.micode.notes.R;
-import net.micode.notes.data.Notes;
-import net.micode.notes.data.Notes.NoteColumns;
-import net.micode.notes.tool.ResourceParser;
-import net.micode.notes.ui.NoteEditActivity;
-import net.micode.notes.ui.NotesListActivity;
-
-/**
- * 笔记小部件提供者抽象类，扩展自AppWidgetProvider，用于管理和更新笔记小部件的内容。
- */
-public abstract class NoteWidgetProvider extends AppWidgetProvider {
-    // 查询笔记时用到的列名数组
-    public static final String[] PROJECTION = new String[]{
-            NoteColumns.ID,
-            NoteColumns.BG_COLOR_ID,
-            NoteColumns.SNIPPET
-    };
-
-    // 列的索引常量
-    public static final int COLUMN_ID = 0;
-    public static final int COLUMN_BG_COLOR_ID = 1;
-    public static final int COLUMN_SNIPPET = 2;
-
-    // 日志标签
-    private static final String TAG = "NoteWidgetProvider";
-
-    /**
-     * 当小部件被删除时调用，更新数据库中对应小部件的ID为无效ID。
-     */
-    @Override
-    public void onDeleted(Context context, int[] appWidgetIds) {
-        ContentValues values = new ContentValues();
-        values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
-        for (int i = 0; i < appWidgetIds.length; i++) {
-            context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
-                    values,
-                    NoteColumns.WIDGET_ID + "=?",
-                    new String[]{String.valueOf(appWidgetIds[i])});
-        }
-    }
-
-    /**
-     * 根据小部件ID查询对应的笔记信息。
-     *
-     * @param context  上下文
-     * @param widgetId 小部件ID
-     * @return 返回查询到的Cursor对象，包含笔记的摘要、背景ID等信息。
-     */
-    private Cursor getNoteWidgetInfo(Context context, int widgetId) {
-        return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
-                PROJECTION,
-                NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
-                new String[]{String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER)},
-                null);
-    }
-
-    /**
-     * 更新小部件显示内容的通用方法。
-     *
-     * @param context          上下文
-     * @param appWidgetManager AppWidget管理器
-     * @param appWidgetIds     小部件ID数组
-     */
-    protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
-        update(context, appWidgetManager, appWidgetIds, false);
-    }
-
-    /**
-     * 根据是否隐私模式更新小部件显示内容。
-     *
-     * @param context          上下文
-     * @param appWidgetManager AppWidget管理器
-     * @param appWidgetIds     小部件ID数组
-     * @param privacyMode      是否为隐私模式
-     */
-    private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
-                        boolean privacyMode) {
-        for (int i = 0; i < appWidgetIds.length; i++) {
-            if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
-                int bgId = ResourceParser.getDefaultBgId(context);
-                String snippet = "";
-                Intent intent = new Intent(context, NoteEditActivity.class);
-                intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
-                intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
-                intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
-
-                Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
-                if (c != null && c.moveToFirst()) {
-                    if (c.getCount() > 1) {
-                        Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
-                        c.close();
-                        return;
-                    }
-                    snippet = c.getString(COLUMN_SNIPPET);
-                    bgId = c.getInt(COLUMN_BG_COLOR_ID);
-                    intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
-                    intent.setAction(Intent.ACTION_VIEW);
-                } else {
-                    snippet = context.getResources().getString(R.string.widget_havenot_content);
-                    intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
-                }
-
-                if (c != null) {
-                    c.close();
-                }
-
-                RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
-                rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
-                intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
-
-                // 为小部件的点击事件设置PendingIntent
-                PendingIntent pendingIntent = null;
-                if (privacyMode) {
-                    rv.setTextViewText(R.id.widget_text,
-                            context.getString(R.string.widget_under_visit_mode));
-                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
-                            context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
-                } else {
-                    rv.setTextViewText(R.id.widget_text, snippet);
-                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
-                            PendingIntent.FLAG_UPDATE_CURRENT);
-                }
-
-                rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
-                appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
-            }
-        }
-    }
-
-    /**
-     * 获取背景资源的ID。
-     *
-     * @param bgId 背景ID
-     * @return 返回对应的资源ID
-     */
-    protected abstract int getBgResourceId(int bgId);
-
-    /**
-     * 获取小部件布局的ID。
-     *
-     * @return 返回布局的资源ID
-     */
-    protected abstract int getLayoutId();
-
-    /**
-     * 获取小部件的类型。
-     *
-     * @return 返回小部件的类型
-     */
-    protected abstract int getWidgetType();
-}
-
diff --git a/src/ResourceParser.java b/src/ResourceParser.java
deleted file mode 100644
index 432187c..0000000
--- a/src/ResourceParser.java
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * ResourceParser 类用于管理与应用资源相关的各种静态方法和常量。
- */
-
-package net.micode.notes.tool;
-
-import android.content.Context;
-import android.preference.PreferenceManager;
-
-import net.micode.notes.R;
-import net.micode.notes.ui.NotesPreferenceActivity;
-
-public class ResourceParser {
-
-    // 定义笔记背景颜色的常量
-    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;
-
-    // 定义文本大小的常量
-    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;
-
-    /**
-     * 笔记背景资源类，提供获取不同背景资源的方法。
-     */
-    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
-        };
-
-        // 编辑状态下的标题背景资源数组
-        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获取编辑状态下的背景资源
-        public static int getNoteBgResource(int id) {
-            return BG_EDIT_RESOURCES[id];
-        }
-
-        // 根据id获取编辑状态下的标题背景资源
-        public static int getNoteTitleBgResource(int id) {
-            return BG_EDIT_TITLE_RESOURCES[id];
-        }
-    }
-
-    /**
-     * 获取默认笔记背景id。
-     *
-     * @param context 上下文对象，用于访问SharedPreferences。
-     * @return 如果用户设置了背景颜色，则返回一个随机背景颜色id；否则返回默认背景颜色id。
-     */
-    public static int getDefaultBgId(Context context) {
-        if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
-                NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
-            return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
-        } else {
-            return BG_DEFAULT_COLOR;
-        }
-    }
-
-    /**
-     * 笔记列表项背景资源类，提供获取不同背景资源的方法。
-     */
-    public static class NoteItemBgResources {
-        // 第一个列表项的背景资源数组
-        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
-        };
-
-        // 普通列表项的背景资源数组
-        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
-        };
-
-        // 最后一个列表项的背景资源数组
-        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
-        };
-
-        // 获取第一个列表项的背景资源
-        public static int getNoteBgFirstRes(int id) {
-            return BG_FIRST_RESOURCES[id];
-        }
-
-        // 获取最后一个列表项的背景资源
-        public static int getNoteBgLastRes(int id) {
-            return BG_LAST_RESOURCES[id];
-        }
-
-        // 获取单个列表项的背景资源
-        public static int getNoteBgSingleRes(int id) {
-            return BG_SINGLE_RESOURCES[id];
-        }
-
-        // 获取普通列表项的背景资源
-        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;
-        }
-    }
-
-    /**
-     * 小部件背景资源类，提供获取小部件背景资源的方法。
-     */
-    public static class WidgetBgResources {
-        // 2x 小部件背景资源数组
-        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,
-        };
-
-        // 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];
-        }
-
-        // 4x 小部件背景资源数组
-        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4x小部件的背景资源
-        public static int getWidget4xBgResource(int id) {
-            return BG_4X_RESOURCES[id];
-        }
-    }
-
-    /**
-     * 文本外观资源类，提供获取不同文本外观资源的方法。
-     */
-    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) {
-            // 如果id超出资源数组范围，返回默认字体大小
-            if (id >= TEXTAPPEARANCE_RESOURCES.length) {
-                return BG_DEFAULT_FONT_SIZE;
-            }
-            return TEXTAPPEARANCE_RESOURCES[id];
-        }
-
-        // 获取文本外观资源的数量
-        public static int getResourcesSize() {
-            return TEXTAPPEARANCE_RESOURCES.length;
-        }
-    }
-}
-