diff --git a/app/src/main/java/net/micode/notes/gtask/data/MetaData.java b/app/src/main/java/net/micode/notes/gtask/data/MetaData.java
index 3a2050b..fc75821 100644
--- a/app/src/main/java/net/micode/notes/gtask/data/MetaData.java
+++ b/app/src/main/java/net/micode/notes/gtask/data/MetaData.java
@@ -26,29 +26,49 @@ import org.json.JSONObject;
 
 
 public class MetaData extends Task {
+    /*
+     * 功能：得到类的简写名称存入字符串TAG中
+     * 过程：调用getSimpleName ()函数
+     */
     private final static String TAG = MetaData.class.getSimpleName();
 
     private String mRelatedGid = null;
-
+    /*
+     * 功能：设置数据，即生成元数据库
+     * 过程：调用JSONObject库函数put ()，Task类中的setNotes ()和setName ()函数
+     */
     public void setMeta(String gid, JSONObject metaInfo) {
         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：获取相关联的Gid
+     */
     public String getRelatedGid() {
         return mRelatedGid;
     }
-
+    /*
+     * 功能：判断当前数据是否为空，若为空则返回真即值得保存
+     */
     @Override
     public boolean isWorthSaving() {
         return getNotes() != null;
     }
-
+    /*
+     * 功能：使用远程json数据对象设置元数据内容
+     * 过程：调用父类Task中的setContentByRemoteJSON ()函数来通过远程JSON来设置目录
+     */
     @Override
     public void setContentByRemoteJSON(JSONObject js) {
         super.setContentByRemoteJSON(js);
@@ -58,6 +78,9 @@ public class MetaData extends Task {
                 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;
             }
         }
@@ -68,15 +91,21 @@ public class MetaData extends Task {
         // this function should not be called
         throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
     }
-
+    /*
+     * 异常：传递了非法参数
+     */
     @Override
     public JSONObject getLocalJSONFromContent() {
         throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
     }
-
+    /*
+     * 功能：获取同步动作状态，一般不会用到，若用到，则抛出异常
+     */
     @Override
     public int getSyncAction(Cursor c) {
         throw new IllegalAccessError("MetaData:getSyncAction should not be called");
     }
-
+    /*
+     * 异常：传递了非法参数
+     */
 }
diff --git a/app/src/main/java/net/micode/notes/ui/activities/NoteEditActivity.java b/app/src/main/java/net/micode/notes/ui/activities/NoteEditActivity.java
index 45e6435..c3918b2 100644
--- a/app/src/main/java/net/micode/notes/ui/activities/NoteEditActivity.java
+++ b/app/src/main/java/net/micode/notes/ui/activities/NoteEditActivity.java
@@ -269,6 +269,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         return true;
     }
 
+    /**
+     * 刷新便签屏幕状态
+     */
     @Override
     protected void onResume() {
         super.onResume();
@@ -415,6 +418,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         clearSettingState();
     }
 
+    /**
+     * 更新便签小配件的类型以及功能
+     */
     private void updateWidget() {
         Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
         if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {
diff --git a/doc/小米便签开源代码的泛读报告.docx b/doc/小米便签开源代码的泛读报告.docx
index 17cfa75..9081145 100644
Binary files a/doc/小米便签开源代码的泛读报告.docx and b/doc/小米便签开源代码的泛读报告.docx differ