diff --git a/app/src/main/java/net/micode/notes/model/Note.java b/app/src/main/java/net/micode/notes/model/Note.java
index 6706cf6..632a759 100644
--- a/app/src/main/java/net/micode/notes/model/Note.java
+++ b/app/src/main/java/net/micode/notes/model/Note.java
@@ -15,7 +15,7 @@
  */
 
 package net.micode.notes.model;
-import android.content.ContentProviderOperation;
+import android.content.ContentProviderOperation;//操作
 import android.content.ContentProviderResult;
 import android.content.ContentUris;
 import android.content.ContentValues;
@@ -49,8 +49,8 @@ public class Note {
         values.put(NoteColumns.MODIFIED_DATE, createdTime);
         values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
         values.put(NoteColumns.LOCAL_MODIFIED, 1);
-        values.put(NoteColumns.PARENT_ID, folderId);
-        Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
+        values.put(NoteColumns.PARENT_ID, folderId);//写入数据
+        Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);//获取数据
 
         long noteId = 0;
         try {
@@ -58,7 +58,7 @@ public class Note {
         } catch (NumberFormatException e) {
             Log.e(TAG, "Get note id error :" + e.toString());
             noteId = 0;
-        }
+        }//异常
         if (noteId == -1) {
             throw new IllegalStateException("Wrong note id:" + noteId);
         }
@@ -68,37 +68,37 @@ public class Note {
     public Note() {
         mNoteDiffValues = new ContentValues();
         mNoteData = new NoteData();
-    }
+    }//定义便签属性和便签内容
 
     public void setNoteValue(String key, String value) {
         mNoteDiffValues.put(key, value);
         mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
         mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
-    }
+    }//设置值
 
     public void setTextData(String key, String value) {
         mNoteData.setTextData(key, value);
-    }
+    }//设置数据
 
     public void setTextDataId(long id) {
         mNoteData.setTextDataId(id);
-    }
+    }//设置好  数据的ID
 
     public long getTextDataId() {
         return mNoteData.mTextDataId;
-    }
+    }//get文本数据的ID
 
     public void setCallDataId(long id) {
         mNoteData.setCallDataId(id);
-    }
+    }//设置呼叫的数据ID
 
     public void setCallData(String key, String value) {
         mNoteData.setCallData(key, value);
-    }
+    }//设置呼叫数据
 
     public boolean isLocalModified() {
         return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
-    }
+    }//本地修改判断
 
     public boolean syncNote(Context context, long noteId) {
         if (noteId <= 0) {
@@ -128,16 +128,16 @@ public class Note {
         }
 
         return true;
-    }
+    }//同步判断
 
     private class NoteData {
         private long mTextDataId;
 
-        private ContentValues mTextDataValues;
+        private ContentValues mTextDataValues;//文本数据值
 
         private long mCallDataId;
 
-        private ContentValues mCallDataValues;
+        private ContentValues mCallDataValues;//呼叫数据值
 
         private static final String TAG = "NoteData";
 
@@ -150,33 +150,33 @@ public class Note {
 
         boolean isLocalModified() {
             return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
-        }
+        }//实现上面定义的方法
 
         void setTextDataId(long id) {
             if(id <= 0) {
                 throw new IllegalArgumentException("Text data id should larger than 0");
             }
             mTextDataId = id;
-        }
+        }//实现上面定义的方法
 
         void setCallDataId(long id) {
             if (id <= 0) {
                 throw new IllegalArgumentException("Call data id should larger than 0");
             }
             mCallDataId = id;
-        }
+        }//实现上面定义的方法
 
         void setCallData(String key, String value) {
             mCallDataValues.put(key, value);
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
-        }
+        }//实现上面定义的方法
 
         void setTextData(String key, String value) {
             mTextDataValues.put(key, value);
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
-        }
+        }//实现上面定义的方法
 
         Uri pushIntoContentResolver(Context context, long noteId) {
             /**
@@ -245,9 +245,9 @@ public class Note {
                 } catch (OperationApplicationException e) {
                     Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
                     return null;
-                }
+                }//处理ContentProviderResult的异常
             }
             return null;
-        }
-    }
+        }//存储数据库
+    }//定义一个便签内容的数据类
 }