diff --git a/src/main/java/net/micode/notes/model/WorkingNote.java b/src/main/java/net/micode/notes/model/WorkingNote.java
index 87fbd8a..427f1e5 100644
--- a/src/main/java/net/micode/notes/model/WorkingNote.java
+++ b/src/main/java/net/micode/notes/model/WorkingNote.java
@@ -178,7 +178,7 @@ public class WorkingNote {
             int widgetType, int defaultBgColorId) {
          /**
           * @method:  createEmptyNote
-          * @description: 创建一个空的工作便签，根据传入参数，设置好背景色、是否为挂件等
+          * @description: 创建一个空的工作便签，根据传入参数，设置好工作便签的背景色、挂件号、挂件类型
           * @date: 2023/12/20 23:55
           * @author: zhoukexing
           * @param: [context, folderId, widgetId, widgetType, defaultBgColorId]
@@ -241,7 +241,16 @@ public class WorkingNote {
         }
     }
 
+    /**
+     * @method:  setOnSettingStatusChangedListener
+     * @description: 将工作目录里的NoteEditActivity项设置为NoteSettingChangedListener
+     * @date: 2023/12/21 0:10
+     * @author: zhoukexing
+     * @param: [l] NoteEditActivity
+     * @return: void
+     */
     public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
+        //Q: 这里的l是怎么获取的。l是NoteEditActivity @zkx 2023/12/21
         mNoteSettingStatusListener = l;
     }
 
@@ -265,7 +274,14 @@ public class WorkingNote {
             mNoteSettingStatusListener.onClockAlertChanged(date, set);
         }
     }
-
+    /**
+     * @method:  markDeleted
+     * @description: 描述一下方法的作用
+     * @date: 2023/12/21 0:50
+     * @author: zhoukexing
+     * @param: [mark]
+     * @return: void
+     */
     public void markDeleted(boolean mark) {
         mIsDeleted = mark;
         if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
diff --git a/src/main/java/net/micode/notes/ui/NoteEditActivity.java b/src/main/java/net/micode/notes/ui/NoteEditActivity.java
index 94fd5f5..3b86c9e 100644
--- a/src/main/java/net/micode/notes/ui/NoteEditActivity.java
+++ b/src/main/java/net/micode/notes/ui/NoteEditActivity.java
@@ -158,16 +158,17 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
     /**
     * @zkx 2023/12/18 复写了Activity类中的onCreate函数，当用户点击创建时，会进入这个函数
     */
+    /**
+     * @method:  onCreate
+     * @description: 进入场景：在list页面，点击“写便签”时进入；在挂件页面，生成挂件时不进入，点进挂件时才进入；……
+     * allinall：在进入编辑页面前都会进入
+     * @date: 2023/12/18 23:22
+     * @author: zhoukexing
+     * @param: [savedInstanceState]
+     * @return: void
+     */
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-         /**
-          * @method:  onCreate
-          * @description: 描述一下方法的作用
-          * @date: 2023/12/18 23:22
-          * @author: zhoukexing
-          * @param: [savedInstanceState]
-          * @return: void
-          */
         super.onCreate(savedInstanceState);
         this.setContentView(R.layout.note_edit);
 
@@ -212,6 +213,7 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
          */
         mWorkingNote = null;
         if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) {
+            // 进入场景：点进一个已有便签 @zhoukexing 2023/12/21 0:14
             long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0);
             mUserQuery = "";
 
@@ -229,7 +231,7 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
                 showToast(R.string.error_note_not_exist);
                 finish();
                 return false;
-            } else {
+            } else {// 如果在数据库里存在，就根据noteId从数据库中加载到工作便签里来 @zhoukexing 2023/12/21 0:16
                 mWorkingNote = WorkingNote.load(this, noteId);
                 if (mWorkingNote == null) {
                     Log.e(TAG, "load note failed with note id" + noteId);
@@ -237,20 +239,20 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
                     return false;
                 }
             }
-            getWindow().setSoftInputMode(
+            getWindow().setSoftInputMode(// 猜：平滑地展示便签内容 @zhoukexing 2023/12/21 0:18
                     WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
                             | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
         } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {
-            // New note
+            // 进入场景：一个New note
             long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);
             int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,
                     AppWidgetManager.INVALID_APPWIDGET_ID);
             int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE,
-                    Notes.TYPE_WIDGET_INVALIDE);
+                    Notes.TYPE_WIDGET_INVALIDE); // widgetType=0: 新建的挂件，空的 @zhoukexing 2023/12/21 0:02
             int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,
-                    ResourceParser.getDefaultBgId(this));
+                    ResourceParser.getDefaultBgId(this));// TODO: 2023/12/21 背景色的设置
 
-            // Parse call-record note
+            // Parse call-record note todo
             // 解析文档，看是否有号码存在，以便展示的时候渲染 @zhoukexing 2023/12/20 23:49
             String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
             long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);
@@ -287,6 +289,7 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
             return false;
         }
         mWorkingNote.setOnSettingStatusChangedListener(this);
+        // this是WorkingNote @zhoukexing 2023/12/21 0:08
         return true;
     }
 
@@ -573,12 +576,13 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
         if (itemId == R.id.menu_new_note) { // 从item到itemid，用itemid导向对应的不同的动作 @zhoukexing 2023/12/19 23:38
             createNewNote();
         } else if (itemId == R.id.menu_delete) {
+            // 构建一个警告⚠对话框，让用户确认是否真的要删除便签 @zhoukexing 2023/12/21 0:41
             AlertDialog.Builder builder = new AlertDialog.Builder(this);
             builder.setTitle(getString(R.string.alert_title_delete));
             builder.setIcon(android.R.drawable.ic_dialog_alert);
             builder.setMessage(getString(R.string.alert_message_delete_note));
             builder.setPositiveButton(android.R.string.ok,
-                    new DialogInterface.OnClickListener() {
+                    new DialogInterface.OnClickListener() {// TODO: 2023/12/21 传入了一个函数作为参数？
                         public void onClick(DialogInterface dialog, int which) {
                             deleteCurrentNote();
                             finish();
@@ -655,7 +659,14 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
         intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());
         startActivity(intent);
     }
-
+    /**
+     * @method:  deleteCurrentNote
+     * @description: 删除当前便签。如果在数据库里，还要进一步判断是否在根目录下，是否为同步模式
+     * @date: 2023/12/21 0:48
+     * @author: zhoukexing
+     * @param: []
+     * @return: void
+     */
     private void deleteCurrentNote() {
         if (mWorkingNote.existInDatabase()) {
             HashSet<Long> ids = new HashSet<Long>();
diff --git a/src/main/java/net/micode/notes/ui/NoteEditText.java b/src/main/java/net/micode/notes/ui/NoteEditText.java
index c6b7a10..e6ca80f 100644
--- a/src/main/java/net/micode/notes/ui/NoteEditText.java
+++ b/src/main/java/net/micode/notes/ui/NoteEditText.java
@@ -137,11 +137,19 @@ public class NoteEditText extends EditText {
         }
         return super.onKeyDown(keyCode, event);
     }
-
+    /**
+     * @method:  onKeyUp
+     * @description: 处理键盘输入的键。对于delete键和enter键做了异常处理。
+     * 编辑时会进入，按返回键退出时也会进入
+     * @date: 2023/12/21 0:28
+     * @author: zhoukexing
+     * @param: [keyCode, event]
+     * @return: boolean
+     */
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         switch(keyCode) {
-            case KeyEvent.KEYCODE_DEL:
+            case KeyEvent.KEYCODE_DEL: // delete键的号为67 @zhoukexing 2023/12/21 0:31
                 if (mOnTextViewChangeListener != null) {
                     if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
                         mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
@@ -151,7 +159,7 @@ public class NoteEditText extends EditText {
                     Log.d(TAG, "OnTextViewChangeListener was not seted");
                 }
                 break;
-            case KeyEvent.KEYCODE_ENTER:
+            case KeyEvent.KEYCODE_ENTER: // enter键的号为66 @zhoukexing 2023/12/21 0:31
                 if (mOnTextViewChangeListener != null) {
                     int selectionStart = getSelectionStart();
                     String text = getText().subSequence(selectionStart, length()).toString();