update

src/Notes-master/app/src/main/java/net/micode/notes/tool/DataUtils.java

@@ -34,9 +34,22 @@ import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
 import java.util.ArrayList;
 import java.util.HashSet;
 
-
+/**
+ * 数据操作工具类
+ * 提供对笔记数据的各种操作方法，包括批量删除、移动笔记、查询数据等功能
+ * 所有方法均为静态方法，可直接调用
+ */
 public class DataUtils {
     public static final String TAG = "DataUtils";
+
+    /**
+     * 批量删除笔记
+     * 使用ContentProvider的批量操作功能高效删除多个笔记
+     * 
+     * @param resolver 内容解析器
+     * @param ids 要删除的笔记ID集合
+     * @return 删除操作是否成功
+     */
     public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
         if (ids == null) {
             Log.d(TAG, "the ids is null");
@@ -49,15 +62,18 @@ public class DataUtils {
 
         ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
         for (long id : ids) {
+            // 避免删除系统根文件夹
             if(id == Notes.ID_ROOT_FOLDER) {
                 Log.e(TAG, "Don't delete system folder root");
                 continue;
             }
+            // 构建删除操作
             ContentProviderOperation.Builder builder = ContentProviderOperation
                     .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
             operationList.add(builder.build());
         }
         try {
+            // 执行批量操作
             ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
             if (results == null || results.length == 0 || results[0] == null) {
                 Log.d(TAG, "delete notes failed, ids:" + ids.toString());
@@ -72,14 +88,33 @@ public class DataUtils {
         return false;
     }
 
+    /**
+     * 将单个笔记移动到指定文件夹
+     * 
+     * @param resolver 内容解析器
+     * @param id 要移动的笔记ID
+     * @param srcFolderId 原文件夹ID
+     * @param desFolderId 目标文件夹ID
+     */
     public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
         ContentValues values = new ContentValues();
+        // 更新父文件夹ID和原始父文件夹ID
         values.put(NoteColumns.PARENT_ID, desFolderId);
         values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
+        // 标记为本地修改，以便同步
         values.put(NoteColumns.LOCAL_MODIFIED, 1);
         resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
     }
 
+    /**
+     * 批量将笔记移动到指定文件夹
+     * 使用ContentProvider的批量操作功能高效移动多个笔记
+     * 
+     * @param resolver 内容解析器
+     * @param ids 要移动的笔记ID集合
+     * @param folderId 目标文件夹ID
+     * @return 移动操作是否成功
+     */
     public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
             long folderId) {
         if (ids == null) {
@@ -89,6 +124,7 @@ public class DataUtils {
 
         ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
         for (long id : ids) {
+            // 构建更新操作
             ContentProviderOperation.Builder builder = ContentProviderOperation
                     .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
             builder.withValue(NoteColumns.PARENT_ID, folderId);
@@ -97,9 +133,10 @@ public class DataUtils {
         }
 
         try {
+            // 执行批量操作
             ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
             if (results == null || results.length == 0 || results[0] == null) {
-                Log.d(TAG, "delete notes failed, ids:" + ids.toString());
+                Log.d(TAG, "move notes failed, ids:" + ids.toString());
                 return false;
             }
             return true;
@@ -112,18 +149,22 @@ public class DataUtils {
     }
 
     /**
-     * Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
+     * 获取用户创建的文件夹数量（不包括系统文件夹）
+     * 
+     * @param resolver 内容解析器
+     * @return 用户文件夹数量
      */
     public static int getUserFolderCount(ContentResolver resolver) {
-        Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
+        // 查询类型为文件夹且不是垃圾桶的记录数量
+        Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
                 new String[] { "COUNT(*)" },
                 NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
-                new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)},
+                new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER) },
                 null);
 
         int count = 0;
-        if(cursor != null) {
+        if (cursor != null) {
-            if(cursor.moveToFirst()) {
+            if (cursor.moveToFirst()) {
                 try {
                     count = cursor.getInt(0);
                 } catch (IndexOutOfBoundsException e) {
@@ -136,11 +177,19 @@ public class DataUtils {
         return count;
     }
 
+    /**
+     * 检查笔记在数据库中是否可见（非垃圾桶中的指定类型笔记）
+     * 
+     * @param resolver 内容解析器
+     * @param noteId 笔记ID
+     * @param type 笔记类型
+     * @return 是否可见
+     */
     public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
         Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
                 null,
                 NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
-                new String [] {String.valueOf(type)},
+                new String[] { String.valueOf(type) },
                 null);
 
         boolean exist = false;
@@ -153,6 +202,13 @@ public class DataUtils {
         return exist;
     }
 
+    /**
+     * 检查笔记是否存在于数据库中
+     * 
+     * @param resolver 内容解析器
+     * @param noteId 笔记ID
+     * @return 是否存在
+     */
     public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
         Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
                 null, null, null, null);
@@ -167,6 +223,13 @@ public class DataUtils {
         return exist;
     }
 
+    /**
+     * 检查数据项是否存在于数据库中
+     * 
+     * @param resolver 内容解析器
+     * @param dataId 数据项ID
+     * @return 是否存在
+     */
     public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
         Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
                 null, null, null, null);
@@ -181,6 +244,13 @@ public class DataUtils {
         return exist;
     }
 
+    /**
+     * 检查文件夹名称是否已存在（非垃圾桶中的文件夹）
+     * 
+     * @param resolver 内容解析器
+     * @param name 文件夹名称
+     * @return 是否存在同名文件夹
+     */
     public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
         Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null,
                 NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER +
@@ -188,8 +258,8 @@ public class DataUtils {
                 " AND " + NoteColumns.SNIPPET + "=?",
                 new String[] { name }, null);
         boolean exist = false;
-        if(cursor != null) {
+        if (cursor != null) {
-            if(cursor.getCount() > 0) {
+            if (cursor.getCount() > 0) {
                 exist = true;
             }
             cursor.close();
@@ -197,6 +267,13 @@ public class DataUtils {
         return exist;
     }
 
+    /**
+     * 获取文件夹关联的小部件属性
+     * 
+     * @param resolver 内容解析器
+     * @param folderId 文件夹ID
+     * @return 小部件属性集合
+     */
     public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
         Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
                 new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
@@ -224,11 +301,18 @@ public class DataUtils {
         return set;
     }
 
+    /**
+     * 根据笔记ID获取关联的电话号码
+     * 
+     * @param resolver 内容解析器
+     * @param noteId 笔记ID
+     * @return 电话号码，不存在则返回空字符串
+     */
     public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
         Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
-                new String [] { CallNote.PHONE_NUMBER },
+                new String[] { CallNote.PHONE_NUMBER },
                 CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
-                new String [] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE },
+                new String[] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE },
                 null);
 
         if (cursor != null && cursor.moveToFirst()) {
@@ -243,12 +327,20 @@ public class DataUtils {
         return "";
     }
 
+    /**
+     * 根据电话号码和通话时间获取关联的笔记ID
+     * 
+     * @param resolver 内容解析器
+     * @param phoneNumber 电话号码
+     * @param callDate 通话时间
+     * @return 笔记ID，不存在则返回0
+     */
     public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
         Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
-                new String [] { CallNote.NOTE_ID },
+                new String[] { CallNote.NOTE_ID },
                 CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL("
                 + CallNote.PHONE_NUMBER + ",?)",
-                new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
+                new String[] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
                 null);
 
         if (cursor != null) {
@@ -264,11 +356,19 @@ public class DataUtils {
         return 0;
     }
 
+    /**
+     * 根据笔记ID获取笔记摘要
+     * 
+     * @param resolver 内容解析器
+     * @param noteId 笔记ID
+     * @return 笔记摘要
+     * @throws IllegalArgumentException 当笔记不存在时抛出
+     */
     public static String getSnippetById(ContentResolver resolver, long noteId) {
         Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
-                new String [] { NoteColumns.SNIPPET },
+                new String[] { NoteColumns.SNIPPET },
                 NoteColumns.ID + "=?",
-                new String [] { String.valueOf(noteId)},
+                new String[] { String.valueOf(noteId) },
                 null);
 
         if (cursor != null) {
@@ -282,6 +382,13 @@ public class DataUtils {
         throw new IllegalArgumentException("Note is not found with id: " + noteId);
     }
 
+    /**
+     * 格式化笔记摘要
+     * 去除前后空格，并截断第一个换行符之前的内容
+     * 
+     * @param snippet 原始摘要
+     * @return 格式化后的摘要
+     */
     public static String getFormattedSnippet(String snippet) {
         if (snippet != null) {
             snippet = snippet.trim();
@@ -292,4 +399,4 @@ public class DataUtils {
         }
         return snippet;
     }
-}
+}

src/Notes-master/app/src/main/java/net/micode/notes/tool/ResourceParser.java

@@ -22,24 +22,38 @@ import android.preference.PreferenceManager;
 import net.micode.notes.R;
 import net.micode.notes.ui.NotesPreferenceActivity;
 
+/**
+ * 资源解析工具类，负责管理和提供笔记应用中的各种资源ID
+ * 包括背景颜色、文本大小、不同界面元素的背景资源等
+ * 采用单例模式设计，通过静态方法提供全局访问
+ */
 public class ResourceParser {
 
+    // 定义笔记背景颜色常量
     public static final int YELLOW           = 0;
     public static final int BLUE             = 1;
     public static final int WHITE            = 2;
     public static final int GREEN            = 3;
     public static final int RED              = 4;
 
+    // 默认背景颜色为黄色
     public static final int BG_DEFAULT_COLOR = YELLOW;
 
+    // 定义文本大小常量
     public static final int TEXT_SMALL       = 0;
     public static final int TEXT_MEDIUM      = 1;
     public static final int TEXT_LARGE       = 2;
     public static final int TEXT_SUPER       = 3;
 
+    // 默认文本大小为中等
     public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
 
+    /**
+     * 笔记编辑界面背景资源管理类
+     * 提供获取不同颜色背景资源ID的方法
+     */
     public static class NoteBgResources {
+        // 编辑界面主体背景资源数组，按颜色索引
         private final static int [] BG_EDIT_RESOURCES = new int [] {
             R.drawable.edit_yellow,
             R.drawable.edit_blue,
@@ -48,6 +62,7 @@ public class ResourceParser {
             R.drawable.edit_red
         };
 
+        // 编辑界面标题背景资源数组，按颜色索引
         private final static int [] BG_EDIT_TITLE_RESOURCES = new int [] {
             R.drawable.edit_title_yellow,
             R.drawable.edit_title_blue,
@@ -56,25 +71,48 @@ public class ResourceParser {
             R.drawable.edit_title_red
         };
 
+        /**
+         * 根据颜色ID获取编辑界面主体背景资源ID
+         * @param id 颜色ID，对应ResourceParser中定义的颜色常量
+         * @return 对应的背景资源ID
+         */
         public static int getNoteBgResource(int id) {
             return BG_EDIT_RESOURCES[id];
         }
 
+        /**
+         * 根据颜色ID获取编辑界面标题背景资源ID
+         * @param id 颜色ID，对应ResourceParser中定义的颜色常量
+         * @return 对应的标题背景资源ID
+         */
         public static int getNoteTitleBgResource(int id) {
             return BG_EDIT_TITLE_RESOURCES[id];
         }
     }
 
+    /**
+     * 获取默认背景颜色ID
+     * 根据用户偏好设置决定返回随机颜色还是默认黄色
+     * @param context 应用上下文
+     * @return 背景颜色ID
+     */
     public static int getDefaultBgId(Context context) {
         if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
                 NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
+            // 如果用户开启了随机背景选项，返回随机颜色ID
             return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
         } else {
+            // 默认返回黄色背景
             return BG_DEFAULT_COLOR;
         }
     }
 
+    /**
+     * 笔记列表项背景资源管理类
+     * 提供获取列表中不同位置笔记项背景资源ID的方法
+     */
     public static class NoteItemBgResources {
+        // 列表中第一项的背景资源数组，按颜色索引
         private final static int [] BG_FIRST_RESOURCES = new int [] {
             R.drawable.list_yellow_up,
             R.drawable.list_blue_up,
@@ -83,6 +121,7 @@ public class ResourceParser {
             R.drawable.list_red_up
         };
 
+        // 列表中中间项的背景资源数组，按颜色索引
         private final static int [] BG_NORMAL_RESOURCES = new int [] {
             R.drawable.list_yellow_middle,
             R.drawable.list_blue_middle,
@@ -91,6 +130,7 @@ public class ResourceParser {
             R.drawable.list_red_middle
         };
 
+        // 列表中最后一项的背景资源数组，按颜色索引
         private final static int [] BG_LAST_RESOURCES = new int [] {
             R.drawable.list_yellow_down,
             R.drawable.list_blue_down,
@@ -99,6 +139,7 @@ public class ResourceParser {
             R.drawable.list_red_down,
         };
 
+        // 列表中只有一项时的背景资源数组，按颜色索引
         private final static int [] BG_SINGLE_RESOURCES = new int [] {
             R.drawable.list_yellow_single,
             R.drawable.list_blue_single,
@@ -107,28 +148,57 @@ public class ResourceParser {
             R.drawable.list_red_single
         };
 
+        /**
+         * 获取列表中第一项的背景资源ID
+         * @param id 颜色ID
+         * @return 对应的背景资源ID
+         */
         public static int getNoteBgFirstRes(int id) {
             return BG_FIRST_RESOURCES[id];
         }
 
+        /**
+         * 获取列表中最后一项的背景资源ID
+         * @param id 颜色ID
+         * @return 对应的背景资源ID
+         */
         public static int getNoteBgLastRes(int id) {
             return BG_LAST_RESOURCES[id];
         }
 
+        /**
+         * 获取列表中只有一项时的背景资源ID
+         * @param id 颜色ID
+         * @return 对应的背景资源ID
+         */
         public static int getNoteBgSingleRes(int id) {
             return BG_SINGLE_RESOURCES[id];
         }
 
+        /**
+         * 获取列表中中间项的背景资源ID
+         * @param id 颜色ID
+         * @return 对应的背景资源ID
+         */
         public static int getNoteBgNormalRes(int id) {
             return BG_NORMAL_RESOURCES[id];
         }
 
+        /**
+         * 获取文件夹项的背景资源ID
+         * @return 文件夹背景资源ID
+         */
         public static int getFolderBgRes() {
             return R.drawable.list_folder;
         }
     }
 
+    /**
+     * 桌面小部件背景资源管理类
+     * 提供获取不同尺寸小部件背景资源ID的方法
+     */
     public static class WidgetBgResources {
+        // 2x尺寸小部件的背景资源数组，按颜色索引
         private final static int [] BG_2X_RESOURCES = new int [] {
             R.drawable.widget_2x_yellow,
             R.drawable.widget_2x_blue,
@@ -137,10 +207,16 @@ public class ResourceParser {
             R.drawable.widget_2x_red,
         };
 
+        /**
+         * 获取2x尺寸小部件的背景资源ID
+         * @param id 颜色ID
+         * @return 对应的背景资源ID
+         */
         public static int getWidget2xBgResource(int id) {
             return BG_2X_RESOURCES[id];
         }
 
+        // 4x尺寸小部件的背景资源数组，按颜色索引
         private final static int [] BG_4X_RESOURCES = new int [] {
             R.drawable.widget_4x_yellow,
             R.drawable.widget_4x_blue,
@@ -149,12 +225,22 @@ public class ResourceParser {
             R.drawable.widget_4x_red
         };
 
+        /**
+         * 获取4x尺寸小部件的背景资源ID
+         * @param id 颜色ID
+         * @return 对应的背景资源ID
+         */
         public static int getWidget4xBgResource(int id) {
             return BG_4X_RESOURCES[id];
         }
     }
 
+    /**
+     * 文本外观资源管理类
+     * 提供获取不同文本大小样式资源ID的方法
+     */
     public static class TextAppearanceResources {
+        // 文本外观样式资源数组，按大小索引
         private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] {
             R.style.TextAppearanceNormal,
             R.style.TextAppearanceMedium,
@@ -162,11 +248,16 @@ public class ResourceParser {
             R.style.TextAppearanceSuper
         };
 
+        /**
+         * 根据ID获取文本外观样式资源ID
+         * 包含对无效ID的防御性编程处理
+         * @param id 文本大小ID，对应ResourceParser中定义的文本大小常量
+         * @return 对应的文本外观样式资源ID
+         */
         public static int getTexAppearanceResource(int id) {
             /**
-             * HACKME: Fix bug of store the resource id in shared preference.
+             * HACKME: 修复在共享偏好中存储资源ID可能导致的问题
-             * The id may larger than the length of resources, in this case,
+             * 如果ID大于资源数组长度，返回默认字体大小对应的资源ID
-             * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE}
              */
             if (id >= TEXTAPPEARANCE_RESOURCES.length) {
                 return BG_DEFAULT_FONT_SIZE;
@@ -174,6 +265,10 @@ public class ResourceParser {
             return TEXTAPPEARANCE_RESOURCES[id];
         }
 
+        /**
+         * 获取文本外观资源数组的长度
+         * @return 资源数组长度
+         */
         public static int getResourcesSize() {
             return TEXTAPPEARANCE_RESOURCES.length;
         }

src/Notes-master/src/net/micode/notes/data/Notes.java

@@ -1,18 +1,4 @@
-/*
+
- * 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;
 

src/Notes-master/src/net/micode/notes/model/WorkingNote.java

@@ -1,18 +1,4 @@
-/*
+
- * 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.model;
 

src/Notes-master/src/net/micode/notes/ui/DateTimePickerDialog.java

@@ -1,18 +1,4 @@
-/*
+
- * 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.ui;
 

src/Notes-master/src/net/micode/notes/ui/NotesListItem.java

@@ -1,19 +1,3 @@
-/*
- * 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.ui;
 
 import android.content.Context;
@@ -29,18 +13,29 @@ import net.micode.notes.data.Notes;
 import net.micode.notes.tool.DataUtils;
 import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
 
-
+/**
+ * 便签列表项视图类
+ * 继承自LinearLayout，用于展示便签列表中的单个项目
+ * 支持显示普通便签、文件夹和通话记录等不同类型的项目
+ */
 public class NotesListItem extends LinearLayout {
-    private ImageView mAlert;
+    // UI元素引用
-    private TextView mTitle;
+    private ImageView mAlert;         // 提醒图标
-    private TextView mTime;
+    private TextView mTitle;          // 标题文本
-    private TextView mCallName;
+    private TextView mTime;           // 时间文本
-    private NoteItemData mItemData;
+    private TextView mCallName;       // 通话联系人姓名
-    private CheckBox mCheckBox;
+    private NoteItemData mItemData;   // 绑定的便签数据
+    private CheckBox mCheckBox;       // 复选框（用于选择模式）
 
+    /**
+     * 构造函数
+     * @param context 应用上下文
+     */
     public NotesListItem(Context context) {
         super(context);
+        // 加载列表项布局
         inflate(context, R.layout.note_item, this);
+        // 初始化UI元素
         mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
         mTitle = (TextView) findViewById(R.id.tv_title);
         mTime = (TextView) findViewById(R.id.tv_time);
@@ -48,7 +43,15 @@ public class NotesListItem extends LinearLayout {
         mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);
     }
 
+    /**
+     * 绑定数据到列表项
+     * @param context 应用上下文
+     * @param data 便签数据对象
+     * @param choiceMode 是否为选择模式（显示复选框）
+     * @param checked 复选框默认选中状态
+     */
     public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
+        // 根据选择模式和便签类型控制复选框显示
         if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
             mCheckBox.setVisibility(View.VISIBLE);
             mCheckBox.setChecked(checked);
@@ -57,7 +60,10 @@ public class NotesListItem extends LinearLayout {
         }
 
         mItemData = data;
+        
+        // 根据便签类型设置不同的显示内容
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
+            // 通话记录文件夹
             mCallName.setVisibility(View.GONE);
             mAlert.setVisibility(View.VISIBLE);
             mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
@@ -65,10 +71,12 @@ public class NotesListItem extends LinearLayout {
                     + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
             mAlert.setImageResource(R.drawable.call_record);
         } else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
+            // 通话记录中的便签
             mCallName.setVisibility(View.VISIBLE);
             mCallName.setText(data.getCallName());
-            mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
+            mTitle.setTextAppearance(context, R.style.TextAppearanceSecondaryItem);
             mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+            // 根据是否有提醒设置提醒图标
             if (data.hasAlert()) {
                 mAlert.setImageResource(R.drawable.clock);
                 mAlert.setVisibility(View.VISIBLE);
@@ -76,16 +84,20 @@ public class NotesListItem extends LinearLayout {
                 mAlert.setVisibility(View.GONE);
             }
         } else {
+            // 普通便签或文件夹
             mCallName.setVisibility(View.GONE);
             mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
 
             if (data.getType() == Notes.TYPE_FOLDER) {
+                // 文件夹显示
                 mTitle.setText(data.getSnippet()
                         + context.getString(R.string.format_folder_files_count,
                                 data.getNotesCount()));
                 mAlert.setVisibility(View.GONE);
             } else {
+                // 普通便签显示
                 mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+                // 根据是否有提醒设置提醒图标
                 if (data.hasAlert()) {
                     mAlert.setImageResource(R.drawable.clock);
                     mAlert.setVisibility(View.VISIBLE);
@@ -94,14 +106,22 @@ public class NotesListItem extends LinearLayout {
                 }
             }
         }
+        // 设置最后修改时间（相对时间格式）
         mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
 
+        // 设置列表项背景
         setBackground(data);
     }
 
+    /**
+     * 设置列表项背景
+     * 根据便签类型和状态选择不同的背景资源
+     * @param data 便签数据对象
+     */
     private void setBackground(NoteItemData data) {
         int id = data.getBgColorId();
         if (data.getType() == Notes.TYPE_NOTE) {
+            // 普通便签背景设置
             if (data.isSingle() || data.isOneFollowingFolder()) {
                 setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
             } else if (data.isLast()) {
@@ -112,11 +132,16 @@ public class NotesListItem extends LinearLayout {
                 setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
             }
         } else {
+            // 文件夹背景设置
             setBackgroundResource(NoteItemBgResources.getFolderBgRes());
         }
     }
 
+    /**
+     * 获取绑定的便签数据
+     * @return 便签数据对象
+     */
     public NoteItemData getItemData() {
         return mItemData;
     }
-}
+}

src/Notes-master/src/net/micode/notes/ui/NotesPreferenceActivity.java

@@ -1,19 +1,3 @@
-/*
- * 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.ui;
 
 import android.accounts.Account;

src/Notes-master/src/net/micode/notes/widget/NoteWidgetProvider.java

@@ -15,6 +15,7 @@
  */
 
 package net.micode.notes.widget;
+
 import android.app.PendingIntent;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProvider;
@@ -32,19 +33,31 @@ import net.micode.notes.tool.ResourceParser;
 import net.micode.notes.ui.NoteEditActivity;
 import net.micode.notes.ui.NotesListActivity;
 
+/**
+ * 便签小部件的抽象基类，提供了小部件的基本功能实现
+ * 具体的小部件类型需要继承此类并实现抽象方法
+ */
 public abstract class NoteWidgetProvider extends AppWidgetProvider {
+    // 查询便签信息时使用的投影，指定要获取的数据库列
     public static final String [] PROJECTION = new String [] {
-        NoteColumns.ID,
+        NoteColumns.ID,         // 便签ID
-        NoteColumns.BG_COLOR_ID,
+        NoteColumns.BG_COLOR_ID, // 便签背景颜色ID
-        NoteColumns.SNIPPET
+        NoteColumns.SNIPPET     // 便签摘要内容
     };
 
+    // 投影结果集中各列的索引位置
     public static final int COLUMN_ID           = 0;
     public static final int COLUMN_BG_COLOR_ID  = 1;
     public static final int COLUMN_SNIPPET      = 2;
 
     private static final String TAG = "NoteWidgetProvider";
 
+    /**
+     * 当一个或多个小部件被删除时调用
+     * 该方法会将被删除小部件关联的便签的widget_id字段置为INVALID_APPWIDGET_ID
+     * @param context 应用上下文
+     * @param appWidgetIds 被删除的小部件ID数组
+     */
     @Override
     public void onDeleted(Context context, int[] appWidgetIds) {
         ContentValues values = new ContentValues();
@@ -57,6 +70,12 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
         }
     }
 
+    /**
+     * 根据小部件ID查询关联的便签信息
+     * @param context 应用上下文
+     * @param widgetId 小部件ID
+     * @return 返回包含便签信息的Cursor，若未找到则返回null
+     */
     private Cursor getNoteWidgetInfo(Context context, int widgetId) {
         return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                 PROJECTION,
@@ -65,68 +84,113 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
                 null);
     }
 
+    /**
+     * 更新小部件显示，默认非隐私模式
+     * @param context 应用上下文
+     * @param appWidgetManager AppWidget管理器
+     * @param appWidgetIds 要更新的小部件ID数组
+     */
     protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
         update(context, appWidgetManager, appWidgetIds, false);
     }
 
+    /**
+     * 更新小部件显示，可以指定是否为隐私模式
+     * 在隐私模式下，小部件会显示通用提示信息，而不是具体便签内容
+     * @param context 应用上下文
+     * @param appWidgetManager AppWidget管理器
+     * @param appWidgetIds 要更新的小部件ID数组
+     * @param privacyMode 是否为隐私模式
+     */
     private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
             boolean privacyMode) {
         for (int i = 0; i < appWidgetIds.length; i++) {
             if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
+                // 设置默认值
                 int bgId = ResourceParser.getDefaultBgId(context);
                 String snippet = "";
+                
+                // 创建启动便签编辑界面的Intent
                 Intent intent = new Intent(context, NoteEditActivity.class);
                 intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
                 intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
                 intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
 
+                // 查询与小部件关联的便签信息
                 Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
                 if (c != null && c.moveToFirst()) {
+                    // 检查是否存在多个便签关联到同一个小部件ID的异常情况
                     if (c.getCount() > 1) {
                         Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
                         c.close();
                         return;
                     }
+                    
+                    // 从查询结果中获取便签内容和背景信息
                     snippet = c.getString(COLUMN_SNIPPET);
                     bgId = c.getInt(COLUMN_BG_COLOR_ID);
                     intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
                     intent.setAction(Intent.ACTION_VIEW);
                 } else {
+                    // 若未找到关联便签，设置默认提示信息
                     snippet = context.getResources().getString(R.string.widget_havenot_content);
                     intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
                 }
 
+                // 关闭Cursor释放资源
                 if (c != null) {
                     c.close();
                 }
 
+                // 创建RemoteViews用于更新小部件UI
                 RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
                 rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
                 intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
+                
                 /**
-                 * Generate the pending intent to start host for the widget
+                 * 生成用于启动小部件宿主的PendingIntent
+                 * 根据是否为隐私模式设置不同的点击行为
                  */
                 PendingIntent pendingIntent = null;
                 if (privacyMode) {
+                    // 隐私模式下显示通用提示，点击进入便签列表
                     rv.setTextViewText(R.id.widget_text,
                             context.getString(R.string.widget_under_visit_mode));
                     pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
                             context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
                 } else {
+                    // 非隐私模式下显示便签内容，点击进入便签编辑界面
                     rv.setTextViewText(R.id.widget_text, snippet);
                     pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
                             PendingIntent.FLAG_UPDATE_CURRENT);
                 }
 
+                // 设置点击事件并更新小部件
                 rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
                 appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
             }
         }
     }
 
+    /**
+     * 获取指定背景ID对应的资源ID
+     * 由具体子类实现
+     * @param bgId 背景ID
+     * @return 资源ID
+     */
     protected abstract int getBgResourceId(int bgId);
 
+    /**
+     * 获取小部件布局ID
+     * 由具体子类实现
+     * @return 布局ID
+     */
     protected abstract int getLayoutId();
 
+    /**
+     * 获取小部件类型
+     * 由具体子类实现
+     * @return 小部件类型
+     */
     protected abstract int getWidgetType();
-}
+}

src/Notes-master/src/net/micode/notes/widget/NoteWidgetProvider_2x.java

@@ -23,25 +23,50 @@ import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.tool.ResourceParser;
 
-
+/**
+ * 2x 尺寸便签小部件的实现类
+ * 继承自 NoteWidgetProvider 抽象类，为 2x 大小的桌面小部件提供具体实现
+ */
 public class NoteWidgetProvider_2x extends NoteWidgetProvider {
+    /**
+     * 小部件更新时调用的方法
+     * 当小部件被添加到桌面或需要更新时，系统会调用此方法
+     * @param context 应用上下文
+     * @param appWidgetManager AppWidget管理器
+     * @param appWidgetIds 需要更新的小部件ID数组
+     */
     @Override
     public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        // 调用父类的更新方法处理小部件更新逻辑
         super.update(context, appWidgetManager, appWidgetIds);
     }
 
+    /**
+     * 获取 2x 小部件使用的布局资源ID
+     * @return 返回布局资源ID
+     */
     @Override
     protected int getLayoutId() {
         return R.layout.widget_2x;
     }
 
+    /**
+     * 根据背景ID获取对应的 2x 小部件背景资源
+     * @param bgId 背景颜色ID
+     * @return 返回对应的背景资源ID
+     */
     @Override
     protected int getBgResourceId(int bgId) {
+        // 使用资源解析器获取对应2x小部件的背景资源
         return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId);
     }
 
+    /**
+     * 获取小部件类型
+     * @return 返回小部件类型常量，表示这是一个2x大小的小部件
+     */
     @Override
     protected int getWidgetType() {
         return Notes.TYPE_WIDGET_2X;
     }
-}
+}

src/Notes-master/src/net/micode/notes/widget/NoteWidgetProvider_4x.java

@@ -23,24 +23,50 @@ import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.tool.ResourceParser;
 
-
+/**
+ * 4x 尺寸便签小部件的实现类
+ * 继承自 NoteWidgetProvider 抽象类，为 4x 大小的桌面小部件提供具体实现
+ */
 public class NoteWidgetProvider_4x extends NoteWidgetProvider {
+    /**
+     * 小部件更新时调用的方法
+     * 当小部件被添加到桌面或需要更新时，系统会调用此方法
+     * @param context 应用上下文
+     * @param appWidgetManager AppWidget管理器
+     * @param appWidgetIds 需要更新的小部件ID数组
+     */
     @Override
     public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        // 调用父类的更新方法处理小部件更新逻辑
         super.update(context, appWidgetManager, appWidgetIds);
     }
 
+    /**
+     * 获取 4x 小部件使用的布局资源ID
+     * 注意：此处缺少 @Override 注解，建议添加以确保方法重写的正确性
+     * @return 返回布局资源ID
+     */
     protected int getLayoutId() {
         return R.layout.widget_4x;
     }
 
+    /**
+     * 根据背景ID获取对应的 4x 小部件背景资源
+     * @param bgId 背景颜色ID
+     * @return 返回对应的背景资源ID
+     */
     @Override
     protected int getBgResourceId(int bgId) {
+        // 使用资源解析器获取对应4x小部件的背景资源
         return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId);
     }
 
+    /**
+     * 获取小部件类型
+     * @return 返回小部件类型常量，表示这是一个4x大小的小部件
+     */
     @Override
     protected int getWidgetType() {
         return Notes.TYPE_WIDGET_4X;
     }
-}
+}