diff --git a/src/Notes-master/src/net/micode/notes/gtask/data/MetaData.java b/src/Notes-master/src/net/micode/notes/gtask/data/MetaData.java
index fe7a778..e69de29 100644
--- a/src/Notes-master/src/net/micode/notes/gtask/data/MetaData.java
+++ b/src/Notes-master/src/net/micode/notes/gtask/data/MetaData.java
@@ -1,104 +0,0 @@
-package net.micode.notes.gtask.data;
- 
-public class MetaData extends Task {
-	/*
-	 * 功能描述：得到类的简写名称存入字符串TAG中
-	 * 实现过程：调用getSimpleName ()函数
-	 */
-    private final static String TAG = MetaData.class.getSimpleName();
-    private String mRelatedGid = null;
-    /*
-     * 功能描述：设置数据，即生成元数据库
-     * 实现过程：调用JSONObject库函数put ()，Task类中的setNotes ()和setName ()函数
-     * 参数注解：
-     */
-    public void setMeta(String gid, JSONObject metaInfo) 
-    {
-    	//对函数块进行注释
-        try {
-            metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
-            /*
-             * 将这对键值放入metaInfo这个jsonobject对象中
-             */
-        } catch (JSONException e) {
-            Log.e(TAG, "failed to put related gid");
-            /*
-             * 输出错误信息
-             */
-        }
-        setNotes(metaInfo.toString());
-        setName(GTaskStringUtils.META_NOTE_NAME);
-    }
-    /*
-     * 功能描述：获取相关联的Gid
-     */
-    public String getRelatedGid() {
-        return mRelatedGid;
-    }
-    /*
-     * 功能描述：判断当前数据是否为空，若为空则返回真即值得保存
-     * Made By CuiCan
-     */
-    @Override
-    public boolean isWorthSaving() {
-        return getNotes() != null;
-    }
-    /*
-     * 功能描述：使用远程json数据对象设置元数据内容
-     * 实现过程：调用父类Task中的setContentByRemoteJSON ()函数，并
-     * 参数注解： 
-     */
-    @Override
-    public void setContentByRemoteJSON(JSONObject js) {
-        super.setContentByRemoteJSON(js);
-        if (getNotes() != null) {
-            try {
-                JSONObject metaInfo = new JSONObject(getNotes().trim());
-                mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
-            } catch (JSONException e) {
-                Log.w(TAG, "failed to get related gid");
-                /*
-                 * 输出警告信息
-                 */
-                mRelatedGid = null;
-            }
-        }
-    }
-    /*
-     * 功能描述：使用本地json数据对象设置元数据内容，一般不会用到，若用到，则抛出异常
-     * Made By CuiCan
-     */
-    @Override
-    public void setContentByLocalJSON(JSONObject js) {
-        // this function should not be called
-        throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
-        /*
-         * 传递非法参数异常
-         */
-    }
-    /*
-     * 功能描述：从元数据内容中获取本地json对象，一般不会用到，若用到，则抛出异常
-     * Made By CuiCan
-     */
-    @Override
-    public JSONObject getLocalJSONFromContent() {
-        throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
-        /*
-         * 传递非法参数异常
-         * Made By Cui Can
-         */
-    }
-    /*
-     * 功能描述：获取同步动作状态，一般不会用到，若用到，则抛出异常
-     * Made By CuiCan
-     */
-    @Override
-    public int getSyncAction(Cursor c) {
-        throw new IllegalAccessError("MetaData:getSyncAction should not be called");
-        /*
-         * 传递非法参数异常
-         * Made By Cui Can
-         */
-    }
- 
-}
\ No newline at end of file
diff --git a/src/Notes-master/src/net/micode/notes/gtask/data/Node.java b/src/Notes-master/src/net/micode/notes/gtask/data/Node.java
index db7db78..e69de29 100644
--- a/src/Notes-master/src/net/micode/notes/gtask/data/Node.java
+++ b/src/Notes-master/src/net/micode/notes/gtask/data/Node.java
@@ -1,90 +0,0 @@
-package net.micode.notes.gtask.data;
- 
-import android.database.Cursor;
- 
-import org.json.JSONObject;
- 
-/**
- * 应该是同步操作的基础数据类型，定义了相关指示同步操作的常量
- * 关键字：abstract
- */
-public abstract class Node {
-	//定义了各种用于表征同步状态的常量
-    public static final int SYNC_ACTION_NONE = 0;// 本地和云端都无可更新内容（即本地和云端内容一致）
-    
-    public static final int SYNC_ACTION_ADD_REMOTE = 1;// 需要在远程云端增加内容
- 
-    public static final int SYNC_ACTION_ADD_LOCAL = 2;// 需要在本地增加内容
- 
-    public static final int SYNC_ACTION_DEL_REMOTE = 3;// 需要在远程云端删除内容
- 
-    public static final int SYNC_ACTION_DEL_LOCAL = 4;// 需要在本地删除内容
- 
-    public static final int SYNC_ACTION_UPDATE_REMOTE = 5;// 需要将本地内容更新到远程云端
- 
-    public static final int SYNC_ACTION_UPDATE_LOCAL = 6;// 需要将远程云端内容更新到本地
- 
-    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;// 同步出现冲突
- 
-    public static final int SYNC_ACTION_ERROR = 8;// 同步出现错误
- 
-    private String mGid;
- 
-    private String mName;
- 
-    private long mLastModified;//记录最后一次修改时间
- 
-    private boolean mDeleted;//表征是否被删除
- 
-    public Node() {
-        mGid = null;
-        mName = "";
-        mLastModified = 0;
-        mDeleted = false;
-    }
- 
-    public abstract JSONObject getCreateAction(int actionId);
- 
-    public abstract JSONObject getUpdateAction(int actionId);
- 
-    public abstract void setContentByRemoteJSON(JSONObject js);
- 
-    public abstract void setContentByLocalJSON(JSONObject js);
- 
-    public abstract JSONObject getLocalJSONFromContent();
- 
-    public abstract int getSyncAction(Cursor c);
- 
-    public void setGid(String gid) {
-        this.mGid = gid;
-    }
- 
-    public void setName(String name) {
-        this.mName = name;
-    }
- 
-    public void setLastModified(long lastModified) {
-        this.mLastModified = lastModified;
-    }
- 
-    public void setDeleted(boolean deleted) {
-        this.mDeleted = deleted;
-    }
- 
-    public String getGid() {
-        return this.mGid;
-    }
- 
-    public String getName() {
-        return this.mName;
-    }
- 
-    public long getLastModified() {
-        return this.mLastModified;
-    }
- 
-    public boolean getDeleted() {
-        return this.mDeleted;
-    }
- 
-}
\ No newline at end of file