diff --git a/Contact.java b/Contact.java
deleted file mode 100644
index b302f4a..0000000
--- a/Contact.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Contact 类用于通过电话号码查询联系人信息
- * 该类实现了从联系人数据库中获取与特定电话号码相关联的显示名称。
- */
-
-package net.micode.notes.data;
-
-import android.content.Context;
-import android.database.Cursor;
-import android.provider.ContactsContract.CommonDataKinds.Phone;
-import android.provider.ContactsContract.Data;
-import android.telephony.PhoneNumberUtils;
-import android.util.Log;
-
-import java.util.HashMap;
-
-public class Contact {
-    // 缓存已查询过的电话号码和对应的联系人名称，以减少数据库查询次数。
-    private static HashMap<String, String> sContactCache;
-    private static final String TAG = "Contact"; // 日志标签
-
-    // 用于查询具有完整国际号码格式的电话号码的selection字符串。
-    private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
-            + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
-            + " AND " + Data.RAW_CONTACT_ID + " IN "
-            + "(SELECT raw_contact_id "
-            + " FROM phone_lookup"
-            + " WHERE min_match = '+')";
-
-    /**
-     * 根据电话号码获取联系人名称。
-     *
-     * @param context     上下文对象，用于访问内容解析器。
-     * @param phoneNumber 需要查询的电话号码。
-     * @return 与电话号码相关联的联系人名称，如果找不到则返回null。
-     */
-    public static String getContact(Context context, String phoneNumber) {
-        // 初始化或获取联系人缓存
-        if (sContactCache == null) {
-            sContactCache = new HashMap<String, String>();
-        }
-
-        // 从缓存中直接获取联系人名称，如果存在。
-        if (sContactCache.containsKey(phoneNumber)) {
-            return sContactCache.get(phoneNumber);
-        }
-
-        // 使用PhoneNumberUtils将电话号码格式化为适合查询的形式
-        String selection = CALLER_ID_SELECTION.replace("+",
-                PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
-
-        // 执行查询以获取与电话号码相关联的联系人名称
-        Cursor cursor = context.getContentResolver().query(
-                Data.CONTENT_URI,
-                new String[]{Phone.DISPLAY_NAME},
-                selection,
-                new String[]{phoneNumber},
-                null);
-
-        if (cursor != null && cursor.moveToFirst()) {
-            try {
-                // 从查询结果中获取联系人名称并加入缓存
-                String name = cursor.getString(0);
-                sContactCache.put(phoneNumber, name);
-                return name;
-            } catch (IndexOutOfBoundsException e) {
-                // 处理查询结果异常
-                Log.e(TAG, " Cursor get string error " + e.toString());
-                return null;
-            } finally {
-                // 关闭游标
-                cursor.close();
-            }
-        } else {
-            // 如果查询无结果，记录日志
-            Log.d(TAG, "No contact matched with number:" + phoneNumber);
-            return null;
-        }
-    }
-}
diff --git a/Notes.java b/Notes.java
deleted file mode 100644
index 226763b..0000000
--- a/Notes.java
+++ /dev/null
@@ -1,273 +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.data;
-
-import android.net.Uri;
-
-// Notes类定义了与笔记和文件夹相关的常量和数据列接口
-public class Notes {
-    public static final String AUTHORITY = "micode_notes"; // 用于标识内容提供者的授权名称
-    public static final String TAG = "Notes"; // 日志标签
-    public static final int TYPE_NOTE = 0; // 笔记类型
-    public static final int TYPE_FOLDER = 1; // 文件夹类型
-    public static final int TYPE_SYSTEM = 2; // 系统类型
-
-    /**
-     * 下面的ID是系统文件夹的标识符
-     * {@link Notes#ID_ROOT_FOLDER} 是默认文件夹
-     * {@link Notes#ID_TEMPARAY_FOLDER} 是属于没有文件夹的笔记
-     * {@link Notes#ID_CALL_RECORD_FOLDER} 是用于存储通话记录的
-     */
-    public static final int ID_ROOT_FOLDER = 0; // 根文件夹ID
-    public static final int ID_TEMPARAY_FOLDER = -1; // 临时文件夹ID，用于存放不属于任何文件夹的笔记
-    public static final int ID_CALL_RECORD_FOLDER = -2; // 通话记录文件夹ID
-    public static final int ID_TRASH_FOLER = -3; // 垃圾箱文件夹ID
-
-    public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; // 用于Intent的提醒日期额外数据
-    public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id"; // 笔记背景色ID
-    public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id"; // 小部件ID
-    public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type"; // 小部件类型
-    public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id"; // 文件夹ID
-    public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date"; // 通话日期
-
-    public static final int TYPE_WIDGET_INVALIDE = -1; // 无效的小部件类型
-    public static final int TYPE_WIDGET_2X = 0; // 2x小部件类型
-    public static final int TYPE_WIDGET_4X = 1; // 4x小部件类型
-
-    public static class DataConstants {
-        public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; // 笔记的内容项类型
-        public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; // 通话记录的内容项类型
-    }
-
-    /**
-     * 查询所有笔记和文件夹的Uri
-     */
-    public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
-
-    /**
-     * 查询数据的Uri
-     */
-    public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
-
-    // 笔记和文件夹的公共列接口
-    public interface NoteColumns {
-        /**
-         * 行的唯一ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String ID = "_id";
-
-        /**
-         * 笔记或文件夹的父ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String PARENT_ID = "parent_id";
-
-        /**
-         * 创建日期
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String CREATED_DATE = "created_date";
-
-        /**
-         * 最后修改日期
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String MODIFIED_DATE = "modified_date";
-
-        /**
-         * 提醒日期
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String ALERTED_DATE = "alert_date";
-
-        /**
-         * 笔记或文件夹的摘要信息
-         * <P>类型: TEXT</P>
-         */
-        public static final String SNIPPET = "snippet";
-
-        /**
-         * 笔记的小部件ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String WIDGET_ID = "widget_id";
-
-        /**
-         * 笔记的小部件类型
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String WIDGET_TYPE = "widget_type";
-
-        /**
-         * 笔记的背景色ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String BG_COLOR_ID = "bg_color_id";
-
-        /**
-         * 笔记是否有附件
-         * <P>类型: INTEGER</P>
-         */
-        public static final String HAS_ATTACHMENT = "has_attachment";
-
-        /**
-         * 笔记数量
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String NOTES_COUNT = "notes_count";
-
-        /**
-         * 文件夹类型：0-笔记，1-文件夹
-         * <P>类型: INTEGER</P>
-         */
-        public static final String TYPE = "type";
-
-        /**
-         * 最后同步ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String SYNC_ID = "sync_id";
-
-        /**
-         * 标记本地是否已修改
-         * <P>类型: INTEGER</P>
-         */
-        public static final String LOCAL_MODIFIED = "local_modified";
-
-        /**
-         * 移入临时文件夹前的原始父ID
-         * <P>类型: INTEGER</P>
-         */
-        public static final String ORIGIN_PARENT_ID = "origin_parent_id";
-
-        /**
-         * Google任务ID
-         * <P>类型: TEXT</P>
-         */
-        public static final String GTASK_ID = "gtask_id";
-
-        /**
-         * 版本号
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String VERSION = "version";
-    }
-
-    // 数据列接口
-    public interface DataColumns {
-        /**
-         * 行的唯一ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String ID = "_id";
-
-        /**
-         * 该项的MIME类型。
-         * <P>类型: TEXT</P>
-         */
-        public static final String MIME_TYPE = "mime_type";
-
-        /**
-         * 属于的笔记的引用ID
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String NOTE_ID = "note_id";
-
-        /**
-         * 创建日期
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String CREATED_DATE = "created_date";
-
-        /**
-         * 最后修改日期
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String MODIFIED_DATE = "modified_date";
-
-        /**
-         * 数据内容
-         * <P>类型: TEXT</P>
-         */
-        public static final String CONTENT = "content";
-
-        /**
-         * 通用数据列，具体含义由{@link #MIME_TYPE}决定，用于存储整型数据
-         * <P>类型: INTEGER</P>
-         */
-        public static final String DATA1 = "data1";
-
-        /**
-         * 通用数据列，具体含义由{@link #MIME_TYPE}决定，用于存储整型数据
-         * <P>类型: INTEGER</P>
-         */
-        public static final String DATA2 = "data2";
-
-        /**
-         * 通用数据列，具体含义由{@link #MIME_TYPE}决定，用于存储文本数据
-         * <P>类型: TEXT</P>
-         */
-        public static final String DATA3 = "data3";
-
-        /**
-         * 通用数据列，具体含义由{@link #MIME_TYPE}决定，用于存储文本数据
-         * <P>类型: TEXT</P>
-         */
-        public static final String DATA4 = "data4";
-
-        /**
-         * 通用数据列，具体含义由{@link #MIME_TYPE}决定，用于存储文本数据
-         * <P>类型: TEXT</P>
-         */
-        public static final String DATA5 = "data5";
-    }
-
-    // 文本笔记类，实现了DataColumns接口
-    public static final class TextNote implements DataColumns {
-        /**
-         * 模式，指示文本是否在检查列表模式中
-         * <P>类型: INTEGER 1:检查列表模式 0: 正常模式</P>
-         */
-        public static final String MODE = DATA1;
-
-        public static final int MODE_CHECK_LIST = 1;
-
-        public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note"; // MIME类型定义
-        public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note"; // 单项MIME类型定义
-        public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note"); // 内容URI定义
-    }
-
-    // 通话记录笔记类，实现了DataColumns接口
-    public static final class CallNote implements DataColumns {
-        /**
-         * 通话日期
-         * <P>类型: INTEGER (long)</P>
-         */
-        public static final String CALL_DATE = DATA1;
-
-        /**
-         * 电话号码
-         * <P>类型: TEXT</P>
-         */
-        public static final String PHONE_NUMBER = DATA3;
-
-        public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note"; // MIME类型定义
-        public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note"; // 单项MIME类型定义
-        public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note"); // 内容URI定义
-    }
-}
diff --git a/小米便签开源代码泛读报告  .docx b/doc/小米便签开源代码泛读报告  .docx
similarity index 100%
rename from 小米便签开源代码泛读报告  .docx
rename to doc/小米便签开源代码泛读报告  .docx