6/17 文档提交

.gitignore

@@ -1,9 +0,0 @@
-# generated files
-bin/
-gen/
-
-# Local configuration file (sdk path, etc)
-project.properties
-.settings/
-.classpath
-.project

.idea/misc.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
-</project>

.idea/modules.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/Notes-master.iml" filepath="$PROJECT_DIR$/Notes-master.iml" />
-    </modules>
-  </component>
-</project>

NOTICE

@@ -1,190 +0,0 @@
-
-   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.
-
-   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.
-
-
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
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-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
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-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
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-      editorial revisions, annotations, elaborations, or other modifications
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-      of this License, Derivative Works shall not include works that remain
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-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
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-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
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-      the conditions stated in this License.
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-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
-      with Licensor regarding such Contributions.
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-   6. Trademarks. This License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
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-      Contributor provides its Contributions) on an "AS IS" BASIS,
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-   END OF TERMS AND CONDITIONS
-

Notes-master.iml

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4">
-  <component name="FacetManager">
-    <facet type="android" name="Android">
-      <configuration />
-    </facet>
-  </component>
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
-    <exclude-output />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-    </content>
-    <orderEntry type="jdk" jdkName="Android API 33, extension level 5 Platform" jdkType="Android SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>

README

@@ -1,23 +0,0 @@
-[中文]
-
-1. MiCode便签是小米便签的社区开源版，由MIUI团队(www.miui.com) 发起并贡献第一批代码，遵循NOTICE文件所描述的开源协议，
-   今后为MiCode社区(www.micode.net) 拥有，并由社区发布和维护。
-
-2. Bug反馈和跟踪，请访问Github,
-   https://github.com/MiCode/Notes/issues?sort=created&direction=desc&state=open
-
-3. 功能建议和综合讨论，请访问MiCode,
-   http://micode.net/forum.php?mod=forumdisplay&fid=38
-
-
-[English]
-
-1. MiCode Notes is open source edition of XM notepad, it's first initiated and sponsored by MIUI team (www.miui.com).
-   It's opened under license described by NOTICE file. It's owned by the MiCode community (www.micode.net). In future,
-   the MiCode community will release and maintain this project.
-
-2. Regarding issue tracking, please visit Github,
-   https://github.com/MiCode/Notes/issues?sort=created&direction=desc&state=open
-
-3. Regarding feature request and general discussion, please visit Micode forum,
-   http://micode.net/forum.php?mod=forumdisplay&fid=38

README.md

@@ -1,2 +0,0 @@
-# MI_Note Project
-

other/07_210340120_唐志发_代码标注/exception/ActionFailureException.doc

@@ -0,0 +1,33 @@
+/*
+ * 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.gtask.exception;//小米便签行为异常处理
+
+public class ActionFailureException extends RuntimeException {//从RuntimeException类派生出ActionFailureException类，用来处理行为异常
+    private static final long serialVersionUID = 4425249765923293627L;//定义：serialVersionUID相当于java类的身份证，主要用于版本控制。
+
+    public ActionFailureException() {// 函数：交给父类的构造函数（包括下面的两个构造函数）
+        super();//super是指向父类的一个指针，与其相对的还有this，指向当前类。
+    }
+
+    public ActionFailureException(String paramString) {
+        super(paramString);
+    }
+
+    public ActionFailureException(String paramString, Throwable paramThrowable) {//调用父类具有相同形参paramString和paramThrowable的构造方法
+        super(paramString, paramThrowable);
+    }
+}

other/07_210340120_唐志发_代码标注/exception/NetworkFailureException.doc

@@ -0,0 +1,33 @@
+/*
+ * 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.gtask.exception;//小米便签网络异常处理包，该源文件里定义的所有类都属于这个包
+
+public class NetworkFailureException extends Exception {//应该是处理网络异常的类，直接继承于Exception
+    private static final long serialVersionUID = 2107610287180234136L;//定义：serialVersionUID相当于java类的身份证，主要用于版本控制。作用：验证版本一致性，如果不一致会导致反序列化的时候版本不一致的异常。
+
+    public NetworkFailureException() {
+        super();
+    }//构造函数（以下三个都是）
+
+    public NetworkFailureException(String paramString) {
+        super(paramString);//调用父类具有相同形参paramString的构造方法，相当于Exception(paramString)
+    }
+
+    public NetworkFailureException(String paramString, Throwable paramThrowable) {
+        super(paramString, paramThrowable);//调用父类具有相同形参paramString和paramThrowable的构造方法
+    }
+}

other/07_210340120_唐志发_代码标注/model/Note.doc

@@ -0,0 +1,253 @@
+/*//单个便签项
+ * 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;//包的名称
+import android.content.ContentProviderOperation;//更新、插入、删除数据
+import android.content.ContentProviderResult;//操作结果
+import android.content.ContentUris;//用于添加和获取Uri后面的ID
+import android.content.ContentValues;//存储基本数据类型数据
+import android.content.Context;//提供调用者的环境
+import android.content.OperationApplicationException;//操作数据容错
+import android.net.Uri;//远程容错
+import android.os.RemoteException;//远程容错
+import android.util.Log;//输出日志，比如说出错、警告等
+
+import net.micode.notes.data.Notes;//以下5行都是对小米便签数据处理的一些数据或操作相关
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.Notes.TextNote;
+
+import java.util.ArrayList;//以上全是导入
+
+
+public class Note {//这个类是用来刻画单个Note的
+    private ContentValues mNoteDiffValues;//ContentValues是用于给其他应用调用小米便签的内容的共享数据
+    private NoteData mNoteData;//申明一个NoteData变量，用来记录note的一些基本信息
+    private static final String TAG = "Note";//软件的名称
+    /**
+     * Create a new note id for adding a new note to databases//创建一个新的便签id，以便把新便签加入数据库
+     */
+    public static synchronized long getNewNoteId(Context context, long folderId) {//获取新建便签的编号
+        // Create a new note in the database
+        ContentValues values = new ContentValues();//在数据库中新建一个便签文件
+        long createdTime = System.currentTimeMillis();//读取当前系统时间
+        values.put(NoteColumns.CREATED_DATE, createdTime);//将创建时间和修改时间都更改为当前系统时间
+        values.put(NoteColumns.MODIFIED_DATE, createdTime);//更改时间
+        values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);//便签类型
+        values.put(NoteColumns.LOCAL_MODIFIED, 1);//修改标志置为1
+        values.put(NoteColumns.PARENT_ID, folderId);//将数据写入数据库表格
+        Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);//外部应用对ContentProvider中的数据进行添加、删除、修改和查询操作
+
+        long noteId = 0;//实现外部应用对数据的插入删除等操作
+        try {//异常处理
+            noteId = Long.valueOf(uri.getPathSegments().get(1));//获取便签的id
+        } catch (NumberFormatException e) {//异常处理和提示
+            Log.e(TAG, "Get note id error :" + e.toString());//获取id错误
+            noteId = 0;//获取了错误的id
+        }
+        if (noteId == -1) {//块：错误ID，异常处理
+            throw new IllegalStateException("Wrong note id:" + noteId);//非法状态时返回出错便签编号
+        }
+        return noteId;//若没有异常，那么返回这个id
+    }
+
+    public Note() {//定义两个变量用来存储便签的数据，一个是存储便签属性、一个是存储便签内容
+        mNoteDiffValues = new ContentValues();//便签属性
+        mNoteData = new NoteData();//便签内容
+    }
+
+    public void setNoteValue(String key, String value) {//设置数据库表格的标签属性数据
+        mNoteDiffValues.put(key, value);//设置key值和对应的value值
+        mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);//修改之后标志为1
+        mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());//更新修改时间为当前系统时间
+    }
+
+    public void setTextData(String key, String value) {
+        mNoteData.setTextData(key, value);
+    }//设置数据库表格的标签文本内容的数据
+
+    public void setTextDataId(long id) {
+        mNoteData.setTextDataId(id);
+    }//设置文本数据的ID
+
+    public long getTextDataId() {
+        return mNoteData.mTextDataId;
+    }//获取文本数据的id
+
+    public void setCallDataId(long id) {
+        mNoteData.setCallDataId(id);
+    }//设置电话号码数据的ID
+
+    public void setCallData(String key, String value) {
+        mNoteData.setCallData(key, value);
+    }//得到电话号码数据的ID
+
+    public boolean isLocalModified() {//判断是否是本地修改
+        return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();//相较上次存在修改size()>0
+    }
+
+    public boolean syncNote(Context context, long noteId) {//判断便签是否同步
+        if (noteId <= 0) {//便签ID不合法时抛出异常
+            throw new IllegalArgumentException("Wrong note id:" + noteId);//抛出异常，弹出对话框错误ID并显示错误ID号
+        }
+
+        if (!isLocalModified()) {//如果本地没有发现修改，直接返回1，指示已经同步到数据库中
+            return true;//返回true
+        }
+
+        /**
+         * In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
+         * {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
+         * note data info
+         */
+        if (context.getContentResolver().update(//发现更新错误时，及时反馈错误信息
+                ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
+                null) == 0) {
+            Log.e(TAG, "Update note error, should not happen");//更新失败
+            // Do not return, fall through
+        }
+        mNoteDiffValues.clear();//初始化便签特征值
+
+        if (mNoteData.isLocalModified()//判断未同步
+                && (mNoteData.pushIntoContentResolver(context, noteId) == null)) {//如果向内容接收者推送上下文失败，则返回错误
+            return false;//否则已经同步成功
+        }
+
+        return true;//成功则返回true
+    }
+
+    private class NoteData {//定义一个基本的便签内容的数据类，主要包含文本数据和电话号码数据
+        private long mTextDataId;//文本数据id
+
+        private ContentValues mTextDataValues;//文本数据内容
+
+        private long mCallDataId;//电话号码数据ID
+
+        private ContentValues mCallDataValues;//电话号码数据内容
+
+        private static final String TAG = "NoteData";//初始化
+
+        public NoteData() {// NoteData的构造函数，初始化四个变量
+            mTextDataValues = new ContentValues();//初始化一个文本数据，为了储存文本
+            mCallDataValues = new ContentValues();//初始化一个电话号码数据，为了储存电话号码
+            mTextDataId = 0;//初始化文本数据ID，置为0
+            mCallDataId = 0;//初始化电话号码ID，置为0
+        }
+
+        boolean isLocalModified() {//下面是上述几个函数的具体实现
+            return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
+        }
+
+        void setTextDataId(long id) {//设定文本数据id
+            if(id <= 0) {// id不能小于0
+                throw new IllegalArgumentException("Text data id should larger than 0");//id保证大于0
+            }
+            mTextDataId = id;//设定电话号码id
+        }
+
+        void setCallDataId(long id) {//设置电话号码对应的id
+            if (id <= 0) {//判断ID是否合法
+                throw new IllegalArgumentException("Call data id should larger than 0");//电话号码数据ID应大于0
+            }
+            mCallDataId = id;//设定电话数据
+        }
+
+        void setCallData(String key, String value) {//设置电话号码数据内容，并且保存修改时间
+            mCallDataValues.put(key, value);//修改之后，将属性值置为1
+            mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);//系统修改时间
+            mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());//设置修改时间为当前系统时间
+        }
+
+        void setTextData(String key, String value) {//设置文本数据
+            mTextDataValues.put(key, value);//修改后标志置为1
+            mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);//设置修改时间为当前系统时间
+            mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());//设置修改时间为当前系统时间
+        }
+
+        Uri pushIntoContentResolver(Context context, long noteId) {//下面函数的作用是将新的数据通过Uri的操作存储到数据库
+            /**
+             * Check for safety
+             */
+            if (noteId <= 0) {//保证便器的编号为正数
+                throw new IllegalArgumentException("Wrong note id:" + noteId);//判断数据是否合法
+            }
+
+            ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();//数据库操作链表
+            ContentProviderOperation.Builder builder = null;//数据库的操作列表
+
+            if(mTextDataValues.size() > 0) {//把文本数据存入DataColumns
+                mTextDataValues.put(DataColumns.NOTE_ID, noteId);//设定文本数据的属性
+                if (mTextDataId == 0) {//uri插入文本数据
+                    mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);//把文本便签的类型填入文本数据库中的对应一行
+                    Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,//uri内容接收器插入文本数据库，放在Notes.CONTENT_DATA_URI的路径下
+                            mTextDataValues);
+                    try {//尝试重新给它设置id
+                        setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
+                    } catch (NumberFormatException e) {
+                        Log.e(TAG, "Insert new text data fail with noteId" + noteId);//插入数据失败
+                        mTextDataValues.clear();//把电话号码数据存入DataColumns
+                        return null;
+                    }
+                } else {
+                    builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(//内容提供者的更新操作，因为这个uri对应的数据是已经存在的，所以不需要向上面一样新建，而是更新即可
+                            Notes.CONTENT_DATA_URI, mTextDataId));//语句： 将uri和id合并后，更新
+                    builder.withValues(mTextDataValues);
+                    operationList.add(builder.build());//操作队列添加上内容提供者
+                }
+                mTextDataValues.clear();//设定电话号码的属性数据
+            }
+
+            if(mCallDataValues.size() > 0) {//对于电话号码的数据也是和文本数据一样的同步处理
+                mCallDataValues.put(DataColumns.NOTE_ID, noteId);//写入noteID
+                if (mCallDataId == 0) {//将电话号码的id设定为uri提供的id
+                    mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
+                    Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
+                            mCallDataValues);
+                    try {//异常处理
+                        setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
+                    } catch (NumberFormatException e) {
+                        Log.e(TAG, "Insert new call data fail with noteId" + noteId);//插入电话号码数据失败
+                        mCallDataValues.clear();
+                        return null;
+                    }
+                } else {//当电话号码不为新建时，更新电话号码ID
+                    builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(//内容提供者的更新操作，这个uri对应的数据是已经存在的，因此进行更新即可
+                            Notes.CONTENT_DATA_URI, mCallDataId));
+                    builder.withValues(mCallDataValues);
+                    operationList.add(builder.build());//存储过程中的异常处理
+                }
+                mCallDataValues.clear();
+            }
+
+            if (operationList.size() > 0) {//存储过程中如果遇到异常，通过如下进行处理
+                try {//抛出远程异常，并写回日志
+                    ContentProviderResult[] results = context.getContentResolver().applyBatch(//Android源码中对通讯录的操作，应用端使用ContentProvider提供的applyBatch，进行批量处理通讯录的联系人入库
+                            Notes.AUTHORITY, operationList);
+                    return (results == null || results.length == 0 || results[0] == null) ? null//完成后返回一个URI
+                            : ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
+                } catch (RemoteException e) {//捕捉操作异常并写回日志
+                    Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));//异常日志
+                    return null;
+                } catch (OperationApplicationException e) {
+                    Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));//异常日志
+                    return null;
+                }
+            }
+            return null;
+        }
+    }
+}

other/07_210340120_唐志发_代码标注/model/WorkingNote.doc

@@ -0,0 +1,368 @@
+/*//当前活动便签项
+ * 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;//在model包中
+
+import android.appwidget.AppWidgetManager;//需要调用的其他类
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;//游标的使用
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;//小米便签操作的整体属性
+import net.micode.notes.data.Notes.CallNote;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.Notes.TextNote;
+import net.micode.notes.tool.ResourceParser.NoteBgResources;
+
+
+public class WorkingNote {//声明一个workingnote类
+    // Note for the working note
+    private Note mNote;//声明一个Note类型的变量
+    // Note Id
+    private long mNoteId;//声明便签content
+    // Note content
+    private String mContent;//声明便签mode
+    // Note mode
+    private int mMode;//是否是清单模式
+
+    private long mAlertDate;//设置闹钟时间
+
+    private long mModifiedDate;// 最后修改时间
+
+    private int mBgColorId;//背景颜色ID
+
+    private int mWidgetId;//控件ID
+
+    private int mWidgetType;//桌面挂件的格式
+
+    private long mFolderId;//便签文件夹ID
+
+    private Context mContext;//当前便签的上下文
+
+    private static final String TAG = "WorkingNote";//声明 DATA_PROJECTION字符串数组
+
+    private boolean mIsDeleted;//是否应该被删除
+
+    private NoteSettingChangedListener mNoteSettingStatusListener;//一个用来监听设置是否有变化的接口
+
+    public static final String[] DATA_PROJECTION = new String[] {//声明 NOTE_PROJECTION字符串数组
+            DataColumns.ID,
+            DataColumns.CONTENT,
+            DataColumns.MIME_TYPE,
+            DataColumns.DATA1,
+            DataColumns.DATA2,
+            DataColumns.DATA3,
+            DataColumns.DATA4,
+    };
+
+    public static final String[] NOTE_PROJECTION = new String[] {//保存便签自身属性的字符串数组
+            NoteColumns.PARENT_ID,
+            NoteColumns.ALERTED_DATE,
+            NoteColumns.BG_COLOR_ID,
+            NoteColumns.WIDGET_ID,
+            NoteColumns.WIDGET_TYPE,
+            NoteColumns.MODIFIED_DATE
+    };
+
+    private static final int DATA_ID_COLUMN = 0;//规定每一个数据类型在哪一行
+
+    private static final int DATA_CONTENT_COLUMN = 1;
+
+    private static final int DATA_MIME_TYPE_COLUMN = 2;
+
+    private static final int DATA_MODE_COLUMN = 3;
+
+    private static final int NOTE_PARENT_ID_COLUMN = 0;//以下6个常量表示便签投影的0-5列
+
+    private static final int NOTE_ALERTED_DATE_COLUMN = 1;
+
+    private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
+
+    private static final int NOTE_WIDGET_ID_COLUMN = 3;
+
+    private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
+
+    private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
+
+    // New note construct
+    private WorkingNote(Context context, long folderId) {//该方法初始化类里的各项变量
+        mContext = context;//WorkingNote的构造函数
+        mAlertDate = 0;//默认提醒日期为0
+        mModifiedDate = System.currentTimeMillis();//系统现在的时间,时间的表达格式为当前计算机时间和GMT时间(格林威治时间)1970年1月1号0时0分0秒所差的毫秒数
+        mFolderId = folderId;//默认最后一次修改日期为当前时间
+        mNote = new Note();//加载一个已存在的便签
+        mNoteId = 0;//没有提供id所以默认为0
+        mIsDeleted = false;
+        mMode = 0;
+        mWidgetType = Notes.TYPE_WIDGET_INVALIDE;//默认是不可见
+    }
+
+    // Existing note construct
+    private WorkingNote(Context context, long noteId, long folderId) {//加载Note
+        mContext = context;//调用query函数找到第一个条目
+        mNoteId = noteId;
+        mFolderId = folderId;
+        mIsDeleted = false;
+        mNote = new Note();
+        loadNote();//加载便签
+    }
+
+    private void loadNote() {//加载已有的便签
+        Cursor cursor = mContext.getContentResolver().query(//存在第一个条目
+                ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
+                null, null);
+
+        if (cursor != null) {//通过数据库调用query函数找到第一个条目
+            if (cursor.moveToFirst()) {//如果游标移动到第一行
+                mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);//存储各项信息
+                mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);//关闭cursor游标
+                mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
+                mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
+                mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
+                mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
+            }
+            cursor.close();//若不存在，报错
+        } else {//否则说明不存在这个便签，加载错误
+            Log.e(TAG, "No note with id:" + mNoteId);//未能找到此note,返回异常
+            throw new IllegalArgumentException("Unable to find note with id " + mNoteId);//抛出异常，找不到NoteID
+        }
+        loadNoteData();//调用方法loadNoteData，导入便签的内容。
+    }
+
+    private void loadNoteData() {//加载NoteData
+        Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
+                DataColumns.NOTE_ID + "=?", new String[] {
+                    String.valueOf(mNoteId)
+                }, null);//判断信息是否为空
+
+        if (cursor != null) {//光标存在时，将光标移动到便签的起始位置
+            if (cursor.moveToFirst()) {//do while循环将便签数据全部读取出来
+                do {
+                    String type = cursor.getString(DATA_MIME_TYPE_COLUMN);//获取存储内容的类型
+                    if (DataConstants.NOTE.equals(type)) {//数据类型为文本类型时，存为文本
+                        mContent = cursor.getString(DATA_CONTENT_COLUMN);//如果是便签文本类型，那么加载到相应的里面保存
+                        mMode = cursor.getInt(DATA_MODE_COLUMN);
+                        mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
+                    } else if (DataConstants.CALL_NOTE.equals(type)) {//为电话号码类信息时 存为电话号码
+                        mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));//否则，在日志中标志错误类型为note type错误
+                    } else {//如果类型错误，则提示异常
+                        Log.d(TAG, "Wrong note type with type:" + type);//再否则就是有错误
+                    }
+                } while (cursor.moveToNext());//查阅所有项,直到为空
+            }
+            cursor.close();//查找失败时，在日志中记录错误信息为无法找到id号为mNoteId的便签
+        } else {//否则记录异常日志，没有ID为mNoteId的数据
+            Log.e(TAG, "No data with id:" + mNoteId);//否则记录异常日志，没有ID为mNoteId的数据
+            throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);//抛出异常
+        }
+    }
+
+    public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,//创建一个新便签的构造函数
+            int widgetType, int defaultBgColorId) {
+        WorkingNote note = new WorkingNote(context, folderId);//根据环境和id创建一个空的便签
+        note.setBgColorId(defaultBgColorId);//设定相关属性
+        note.setWidgetId(widgetId);//设定widget id
+        note.setWidgetType(widgetType);//设置窗口类型
+        return note;
+    }
+
+    public static WorkingNote load(Context context, long id) {//导入一个新的正在写入的便签（WorkingNote）
+        return new WorkingNote(context, id, 0);//返回便签
+    }
+
+    public synchronized boolean saveNote() {//保存Note
+        if (isWorthSaving()) {//是否值得保存
+            if (!existInDatabase()) {//是否存在数据库
+                if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {//没有成功创建一个便签时，返回出错日志
+                    Log.e(TAG, "Create new note fail with id:" + mNoteId);
+                    return false;
+                }
+            }
+
+            mNote.syncNote(mContext, mNoteId);//同步便签内容及便签id
+
+            /**
+             * Update widget content if there exist any widget of this note
+             */
+            if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID//判断是否存在widget可以上传
+                    && mWidgetType != Notes.TYPE_WIDGET_INVALIDE
+                    && mNoteSettingStatusListener != null) {
+                mNoteSettingStatusListener.onWidgetChanged();
+            }
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public boolean existInDatabase() {
+        return mNoteId > 0;
+    }//是否在数据库中存在判断是否在数据库中存储过，直接判定id大小即可
+
+    private boolean isWorthSaving() {//判断是否需要保存
+        if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))//被删除，或（不在数据库中 内容为空），或 本地已保存过
+                || (existInDatabase() && !mNote.isLocalModified())) {
+            return false;
+        } else {
+            return true;//其余情况，要保存，返回true
+        }
+    }
+
+    public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {//设置常量
+        mNoteSettingStatusListener = l;
+    }
+
+    public void setAlertDate(long date, boolean set) {//设置AlertDate;若 mAlertDate与data不同，则更改mAlertDate并设定NoteValue
+        if (date != mAlertDate) {//发现date与mAlertDate不一致时，设置mAlertDate为date
+            mAlertDate = date;//为设置的日期打标签
+            mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
+        }
+        if (mNoteSettingStatusListener != null) {//判断是否为空
+            mNoteSettingStatusListener.onClockAlertChanged(date, set);
+        }
+    }
+
+    public void markDeleted(boolean mark) {//设定删除标记
+        mIsDeleted = mark;//设定标记
+        if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+                && mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {//调用mNoteSettingStatusListener的 onWidgetChanged方法
+                mNoteSettingStatusListener.onWidgetChanged();
+        }
+    }
+
+    public void setBgColorId(int id) {//设定背景颜色
+        if (id != mBgColorId) {//判断
+            mBgColorId = id;//设置背景颜色
+            if (mNoteSettingStatusListener != null) {
+                mNoteSettingStatusListener.onBackgroundColorChanged();
+            }
+            mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
+        }
+    }
+
+    public void setCheckListMode(int mode) {//设定检查列表模式
+        if (mMode != mode) {//设定一个判断条件
+            if (mNoteSettingStatusListener != null) {
+                mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);//设定之后更改mMode
+            }
+            mMode = mode;//把当前便签蛇者为清单模式的便签
+            mNote.setTextData(TextNote.MODE, String.valueOf(mMode));//语句：重设文本数据，改变MODE项
+        }
+    }
+
+    public void setWidgetType(int type) {//设定WidgetType
+        if (type != mWidgetType) {//设定条件
+            mWidgetType = type;//调用Note的setNoteValue方法更改WidgetType
+            mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
+        }//调用Note的setNoteValue方法更改WidgetType
+    }
+
+    public void setWidgetId(int id) {//设定WidgetId
+        if (id != mWidgetId) {//设定条件
+            mWidgetId = id;//调用Note的setNoteValue方法更改WidgetId
+            mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
+        }//调用Note的setNoteValue方法更改WidgetId
+    }
+
+    public void setWorkingText(String text) {//设定WorkingText
+        if (!TextUtils.equals(mContent, text)) {//判断条件
+            mContent = text;//调用Note的setTextData方法更改WorkingText
+            mNote.setTextData(DataColumns.CONTENT, mContent);//调用Note的setTextData方法更改WorkingText
+        }
+    }
+
+    public void convertToCallNote(String phoneNumber, long callDate) {//转变mNote的CallData及CallNote信息
+        mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
+        mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
+        mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
+    }
+
+    public boolean hasClockAlert() {
+        return (mAlertDate > 0 ? true : false);
+    }//判断是否有时钟提醒
+
+    public String getContent() {
+        return mContent;
+    }//获取内容
+
+    public long getAlertDate() {
+        return mAlertDate;
+    }//获取闹钟警戒数据
+
+    public long getModifiedDate() {
+        return mModifiedDate;
+    }//获取修改的数据
+
+    public int getBgColorResId() {
+        return NoteBgResources.getNoteBgResource(mBgColorId);
+    }//获取背景颜色id
+
+    public int getBgColorId() {
+        return mBgColorId;
+    }//获取背景颜色id
+
+    public int getTitleBgResId() {
+        return NoteBgResources.getNoteTitleBgResource(mBgColorId);
+    }//获取标题背景颜色id
+
+    public int getCheckListMode() {
+        return mMode;
+    }//获取CheckListMode
+
+    public long getNoteId() {
+        return mNoteId;
+    }//获取便签id
+
+    public long getFolderId() {
+        return mFolderId;
+    }//获取文件夹id
+
+    public int getWidgetId() {
+        return mWidgetId;
+    }//获取WidgetType
+
+    public int getWidgetType() {
+        return mWidgetType;
+    }//创建接口 NoteSettingChangedListener,便签更新监视；为NoteEditActivity提供接口
+
+    public interface NoteSettingChangedListener {//该类用于侦听关于Note的设置的改变
+        /**
+         * Called when the background color of current note has just changed
+         */
+        void onBackgroundColorChanged();//背景颜色改变按钮
+
+        /**
+         * Called when user set clock
+         */
+        void onClockAlertChanged(long date, boolean set);//
+
+        /**
+         * Call when user create note from widget
+         */
+        void onWidgetChanged();//小部件的修改按钮
+
+        /**
+         * Call when switch between check list mode and normal mode
+         * @param oldMode is previous mode before change
+         * @param newMode is new mode
+         */
+        void onCheckListModeChanged(int oldMode, int newMode);//mode的改变按键
+    }
+}

other/07_210340120_唐志发_代码标注/remote/GTaskASyncTask.doc

@@ -0,0 +1,123 @@
+
+/*
+ * 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.gtask.remote;//实现异步操作避免单个操作耗时过久而堵塞任务的关键路径,从而整体卡顿
+
+import android.app.Notification;//以下几行都是引用基于数据库服务的类
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.os.AsyncTask;
+
+import net.micode.notes.R;
+import net.micode.notes.ui.NotesListActivity;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+
+public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {//异步任务类：任务同步和取消，显示同步任务的进程、通知和结果
+
+    private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;//定义一个int变量，作用是存储GTASK同步通知ID
+
+    public interface OnCompleteListener {//方法：声明了一个名为OnCompleteListener的接口，其内部的OnComplete方法在GTaskSyncService里面实现，用来初始化异步的功能
+        void onComplete();//初始化
+    }
+
+    private Context mContext;//定义成员：文本内容
+
+    private NotificationManager mNotifiManager;//对象： 通知管理器类的实例化
+
+    private GTaskManager mTaskManager;//实例化任务管理器
+
+    private OnCompleteListener mOnCompleteListener;//实例化是否完成的监听器
+
+    public GTaskASyncTask(Context context, OnCompleteListener listener) {//传入两个变量，构造形成GtaskASyncTask类
+        mContext = context;// 引入两个变量，构造形成GtaskASyncTask类
+        mOnCompleteListener = listener;
+        mNotifiManager = (NotificationManager) mContext//getSystemService是Activity的一个方法，可根据传入的参数获得应服务的对象。这里以Context的NOTIFICATION_SERVICE为对象。
+                .getSystemService(Context.NOTIFICATION_SERVICE);//getSystemService是一种可根据传入的参数获得应服务的对象的端口函数。
+        mTaskManager = GTaskManager.getInstance();//getInstance ()函数用于使用单例模式创建类的实例。
+    }
+
+    public void cancelSync() {//取消同步
+        mTaskManager.cancelSync();//调用类中的同名方法来取消同步
+    }
+
+    public void publishProgess(String message) {//显示消息（string message）
+        publishProgress(new String[] {//String[]创建java数组
+                message
+        });
+    }
+
+    private void showNotification(int tickerId, String content) {//显示通知
+        Notification notification = new Notification(R.drawable.notification, mContext//新建一个通知
+                .getString(tickerId), System.currentTimeMillis());//新建一个通知并显示通知
+        notification.defaults = Notification.DEFAULT_LIGHTS;// 默认调用系统自带灯光
+        notification.flags = Notification.FLAG_AUTO_CANCEL;
+        PendingIntent pendingIntent;//描述了想要启动一个Activity、Broadcast或是Service的意图
+        if (tickerId != R.string.ticker_success) {// 点击清除按钮或点击通知后会自动消失
+            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,//若同步不成功，就从系统取得一个来启动NotesPreferenceActivity的对象
+                    NotesPreferenceActivity.class), 0);//获取首选项设置页
+
+        } else {
+            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,//若同步成功，就从系统取得一个来启动一个NotesListActivity的对象
+                    NotesListActivity.class), 0);
+        }
+        notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
+                pendingIntent);//设置最新事件信息
+        mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);//通过NotificationManager对象的notify（）方法来执行一个notification的消息
+    }
+
+    @Override//这是Java5的元数据，自动加上去的一个标志，目的是告诉你下面这个方法是从父类/接口继承过来的，需要重写一次
+    protected Integer doInBackground(Void... unused) {//执行后台操作
+        publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity//利用getString,将把 字符串内容传进sync_progress_login中
+                .getSyncAccountName(mContext)));
+        return mTaskManager.sync(mContext, this);//在后台进行同步
+    }
+
+    @Override//这是Java5的元数据，自动加上去的一个标志，目的是告诉你下面这个方法是从父类/接口继承过来的，需要重写一次
+    protected void onProgressUpdate(String... progress) {//显示进度的更新
+        showNotification(R.string.ticker_syncing, progress[0]);//显示进度的更新
+        if (mContext instanceof GTaskSyncService) {//判断mContext是否是GTaskSyncService的实例
+            ((GTaskSyncService) mContext).sendBroadcast(progress[0]);// 如果mContext是GTaskSyncService实例化的对象则发送一个广播
+        }
+    }
+
+    @Override//这是Java5的元数据，自动加上去的一个标志，目的是告诉你下面这个方同步失败，取消法是从父类/接口继承过来的，需要重写一次
+    protected void onPostExecute(Integer result) {//设置任务，比如在用户界面显示一个进度条
+        if (result == GTaskManager.STATE_SUCCESS) {//若匹配成功，则显示成功及展示出同步的账户
+            showNotification(R.string.ticker_success, mContext.getString(//若匹配成功，则显示成功及展示出同步的账户
+                    R.string.success_sync_account, mTaskManager.getSyncAccount()));
+            NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());
+        } else if (result == GTaskManager.STATE_NETWORK_ERROR) {
+            showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network));//设置最新同步的时间,防止时间出现更改。
+        } else if (result == GTaskManager.STATE_INTERNAL_ERROR) {
+            showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal));//网络故障导致同步出错
+        } else if (result == GTaskManager.STATE_SYNC_CANCELLED) {
+            showNotification(R.string.ticker_cancel, mContext//同步失败，取消
+                    .getString(R.string.error_sync_cancelled));
+        }
+        if (mOnCompleteListener != null) {//若监听器为空，则创建新进程
+            new Thread(new Runnable() {
+
+                public void run() {
+                    mOnCompleteListener.onComplete();
+                }//执行完后调用然后返回主线程中
+            }).start();
+        }
+    }
+}

other/07_210340120_唐志发_代码标注/remote/GTaskClient.doc

@@ -0,0 +1,584 @@
+/*
+ * 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.gtask.remote;//这个函数用于自动登录账号并更新消息，创建或者获取任务列表
+
+import android.accounts.Account;//引入包
+import android.accounts.AccountManager;
+import android.accounts.AccountManagerFuture;
+import android.app.Activity;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.gtask.data.Node;
+import net.micode.notes.gtask.data.Task;
+import net.micode.notes.gtask.data.TaskList;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.gtask.exception.NetworkFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+import net.micode.notes.ui.NotesPreferenceActivity;
+
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.ClientProtocolException;
+import org.apache.http.client.entity.UrlEncodedFormEntity;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.cookie.Cookie;
+import org.apache.http.impl.client.BasicCookieStore;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.apache.http.message.BasicNameValuePair;
+import org.apache.http.params.BasicHttpParams;
+import org.apache.http.params.HttpConnectionParams;
+import org.apache.http.params.HttpParams;
+import org.apache.http.params.HttpProtocolParams;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.Inflater;
+import java.util.zip.InflaterInputStream;//引入包
+
+
+public class GTaskClient {//GTaskClient类：实现GTask的登录以及创建GTask任务和任务列表，从网络上获取任务内容
+    private static final String TAG = GTaskClient.class.getSimpleName();//Google邮箱指定URL
+
+    private static final String GTASK_URL = "https://mail.google.com/tasks/";//这个是获得URL
+
+    private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";//这个是传递URL
+
+    private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";//发布的uri
+
+    private static GTaskClient mInstance = null;//后续使用的参数以及变量
+    private DefaultHttpClient mHttpClient;//网络地址客户端
+
+    private String mGetUrl;//构造函数：初始化各属性
+
+    private String mPostUrl;
+
+    private long mClientVersion;
+
+    private boolean mLoggedin;
+
+    private long mLastLoginTime;
+
+    private int mActionId;
+
+    private Account mAccount;
+
+    private JSONArray mUpdateArray;
+
+    private GTaskClient() {//getInstance：获取实例化对象并返回
+        mHttpClient = null;//初始化客户端，使用 getInstance()，返回mInstance这个实例化对象，从而获取实例化对象
+        mGetUrl = GTASK_GET_URL;
+        mPostUrl = GTASK_POST_URL;
+        mClientVersion = -1;
+        mLoggedin = false;
+        mLastLoginTime = 0;
+        mActionId = 1;
+        mAccount = null;
+        mUpdateArray = null;
+    }
+
+    public static synchronized GTaskClient getInstance() {//获取实例，如果当前没有示例，则新建一个登陆的gtask，如果有直接返回
+        if (mInstance == null) {// 若无实例，则新建一个
+            mInstance = new GTaskClient();
+        }
+        return mInstance;
+    }
+
+    public boolean login(Activity activity) {//login：用于实现登录的方法，以activity作为参数
+        // we suppose that the cookie would expire after 5 minutes//设置登录时间一旦超过5分钟即需要重新登录
+        // then we need to re-login//实现登录：使用下面定义的loginGoogleAccount( )方法登录Google账户 ，使用下面定义的loginGtask( )方法登录gtask，登录成功返回true，登录失败返回false
+        final long interval = 1000 * 60 * 5;//interval：时间间隔为1000ns * 60 * 5 = 5min 即间隔5分钟时间
+        if (mLastLoginTime + interval < System.currentTimeMillis()) {//判断距离上次登录的时间间隔，若超过5分钟，则重置登录状态
+            mLoggedin = false;//取消登录
+        }
+
+        // need to re-login after account switch//need to re-login after account switch  重新登录操作
+        if (mLoggedin//需要重新登录
+                && !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
+                        .getSyncAccountName(activity))) {
+            mLoggedin = false;//若未超时，不需要再次登录，输出已登录信息
+        }
+
+        if (mLoggedin) {//代码块，如果登录的时候符合上面的要求则让其显示已登录登陆
+            Log.d(TAG, "already logged in");//显示已登录
+            return true;//不需要再次登录
+        }
+
+        mLastLoginTime = System.currentTimeMillis();//更新登录时间为系统当前时间
+        String authToken = loginGoogleAccount(activity, false);//获取登录令牌，判断是否登入google账号
+        if (authToken == null) {//登录失败的情况
+            Log.e(TAG, "login google account failed");//登录失败
+            return false;
+        }
+
+        // login with custom domain if necessary//利用自己的用户域名登陆
+        if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()//使用用户域名进行登录
+                .endsWith("googlemail.com"))) {// 判断是不是一个谷歌账户
+            StringBuilder url = new StringBuilder(GTASK_URL).append("a/");//变为小写
+            int index = mAccount.name.indexOf('@') + 1;//语句：返回@第一次出现的位置并把位置+1后记录在index里
+            String suffix = mAccount.name.substring(index);//语句：substring() 方法用于提取字符串中介于两个指定下标之间的字符，此语句中index为start没有设置stop，所以提取了index开始到后面的字符，也就是账户名的后缀，例如qq.com   163.com之类的后缀
+            url.append(suffix + "/");//均为字符串操作来构建url链接
+            mGetUrl = url.toString() + "ig";//设置用户的getUrl
+            mPostUrl = url.toString() + "r/ig";//设置用户postURL
+
+            if (tryToLoginGtask(activity, authToken)) {成功登入
+                mLoggedin = true;//若不能使用用户域名登录，使用google官方url登录
+            }
+        }
+
+        // try to login with google official url//尝试使用谷歌的官方URL登录
+        if (!mLoggedin) {//代码块：  若前面的尝试失败，则尝试使用官方的域名登陆
+            mGetUrl = GTASK_GET_URL;
+            mPostUrl = GTASK_POST_URL;
+            if (!tryToLoginGtask(activity, authToken)) {//第二次登录失败，返回false
+                return false;
+            }
+        }
+
+        mLoggedin = true;//如果没有报错就说明登陆成功
+        return true;
+    }
+
+    private String loginGoogleAccount(Activity activity, boolean invalidateToken) {//登陆Google的主函数，主要用于登陆成功后获取认证令牌
+        String authToken;
+        AccountManager accountManager = AccountManager.get(activity);//在这里，账户管理器帮助我们集中管理注册账号
+        Account[] accounts = accountManager.getAccountsByType("com.google");//获取谷歌账户
+
+        if (accounts.length == 0) {//如果没有这样的账号，输出日志信息“无有效的google账户”
+            Log.e(TAG, "there is no available google account");//显示没有该谷歌账户
+            return null;
+        }
+
+        String accountName = NotesPreferenceActivity.getSyncAccountName(activity);//代码块：匹配活动的账户里是否存在账户，存在的话把这个账户记在mAccount中，没有的话显示不能在设置中获取相同名字的账户
+        Account account = null;//遍历account数组，寻找已登录过的信息
+        for (Account a : accounts) {//找到后，为属性赋值
+            if (a.name.equals(accountName)) {//没找到，输出例外信息
+                account = a;
+                break;
+            }
+        }
+        if (account != null) {//若存在，把这个账户记在mAccount中；否则，显示“不能在设置中获取相同名字的账户”字样，并返回值为null的令牌
+            mAccount = account;//若invalidateToken，则需调用invalidateAuthToken废除这个无效的token
+        } else {
+            Log.e(TAG, "unable to get an account with the same name in the settings");//语句： 若遍历完之后仍没有用户名匹配的账号，则直接返回
+            return null;
+        }
+
+        // get the token now//获取token
+        AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account,//getAuthToken方法： 获取令牌
+                "goanna_mobile", null, activity, null, null);
+        try {
+            Bundle authTokenBundle = accountManagerFuture.getResult();//语句：bundle是一个key-value对，这里获取目标账户的最终结果集
+            authToken = authTokenBundle.getString(AccountManager.KEY_AUTHTOKEN);//语句：这里获取bundle类的对象的String串并赋值给令牌对象
+            if (invalidateToken) {//如果是非法的令牌，那么废除这个账号，取消登录状态
+                accountManager.invalidateAuthToken("com.google", authToken);//删除存储AccountManager中此账号类型对应的authToken缓存，应用必须调用这个方法将缓存的authToken置为过期，否则getAuthToken获取到的一直是缓存的token
+                loginGoogleAccount(activity, false);
+            }
+        } catch (Exception e) {//捕捉令牌获取失败的异常
+            Log.e(TAG, "get auth token failed");//错误，获取授权标记失败
+            authToken = null;//tryToLoginGtask：尝试登录Gtask方法，这是一个试探方法，作为登录的预判
+        }
+
+        return authToken;//再次验证令牌。令牌可能是过期的，因此我们需要废除过期令牌
+    }
+
+    private boolean tryToLoginGtask(Activity activity, String authToken) {//方法：用于判断令牌对于登陆gtask账号是否有效
+        if (!loginGtask(authToken)) {//代码块： 如果令牌不可用于登陆gtask账号，则需要重新登陆google账号获取令牌
+            // maybe the auth token is out of date, now let's invalidate the//判断令牌对于登陆gtask账号是否有效
+            // token and try again
+            authToken = loginGoogleAccount(activity, true);//删除过一个无效的authToken，申请一个新的后再次尝试登陆
+            if (authToken == null) {//代码块：对再次登陆google账号失败的处理
+                Log.e(TAG, "login google account failed");//错误，登录 google 帐户失败
+                return false;//对再次登陆google账号失败的处理
+            }
+
+            if (!loginGtask(authToken)) {//代码块： 重新获取的令牌再次失效
+                Log.e(TAG, "login gtask failed");//错误，登录 gtask 失败
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private boolean loginGtask(String authToken) {//loginGtask：实现登录Gtask的方法
+        int timeoutConnection = 10000;//连接超时为10000毫秒，即10秒
+        int timeoutSocket = 15000;//socket：android与服务器的通信工具，与http的主要区别是，能够主动推送信息而不需要每次发送请求
+        HttpParams httpParameters = new BasicHttpParams();//申请一个httpParameters参数类的对象
+        HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);//通过该方法设置连接超时的时间
+        HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);//设置端口超时的时间
+        mHttpClient = new DefaultHttpClient(httpParameters);
+        BasicCookieStore localBasicCookieStore = new BasicCookieStore();//为cookie申请存储对象
+        mHttpClient.setCookieStore(localBasicCookieStore);//设置本地cookie
+        HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);//setUseExpectContinu方法：设置http协议1.1中的一个header属性Expect 100 Continue
+
+        // login gtask//登录的实现
+        try {//登录Gtask
+            String loginUrl = mGetUrl + "?auth=" + authToken;//设置登录的url以及令牌信息
+            HttpGet httpGet = new HttpGet(loginUrl);//通过HttpGet向服务器申请
+            HttpResponse response = null;//通过HttpGet向服务器申请
+            response = mHttpClient.execute(httpGet);//从cookiestore中获取cookie
+
+            // get the cookie now
+            List<Cookie> cookies = mHttpClient.getCookieStore().getCookies();//语句：获取cookie值
+            boolean hasAuthCookie = false;//获取cookie值
+            for (Cookie cookie : cookies) {//功能：遍历cookies集合中的每个Cookie对象，如果有一个Cookie对象的名中含有GTL，hasAuthCookie被赋给True
+                if (cookie.getName().contains("GTL")) {//验证cookie信息，这里通过GTL标志来验证
+                    hasAuthCookie = true;//验证cookie信息
+                }
+            }
+            if (!hasAuthCookie) {//代码块：显示这是没有授权的cookie
+                Log.w(TAG, "it seems that there is no auth cookie");//显示没有授权的cookie
+            }
+
+            // get the client version//获取client的版本号
+            String resString = getResponseContent(response.getEntity());//获取客户端版本
+            String jsBegin = "_setup(";//在取得的内容中，截取从_setup(到)}</script>中间的部分，这是html语言格式，获取的是gtask_url
+            String jsEnd = ")}</script>";
+            int begin = resString.indexOf(jsBegin);//获取jsbegin中begin的序号
+            int end = resString.lastIndexOf(jsEnd);//获取jsend中end的序号
+            String jsString = null;
+            if (begin != -1 && end != -1 && begin < end) {
+                jsString = resString.substring(begin + jsBegin.length(), end);
+            }
+            JSONObject js = new JSONObject(jsString);
+            mClientVersion = js.getLong("v");//语句：设置客户端版本
+        } catch (JSONException e) {//获取异常类型和异常详细消息
+            Log.e(TAG, e.toString());//获取异常类型和异常详细消息
+            e.printStackTrace();
+            return false;
+        } catch (Exception e) {//catch例外，GET失败
+            // simply catch all exceptions
+            Log.e(TAG, "httpget gtask_url failed");//获取异常类型和异常详细消息
+            return false;
+        }
+
+        return true;
+    }
+
+    private int getActionId() {
+        return mActionId++;
+    }//获取动作的id号码
+
+    private HttpPost createHttpPost() {//创建一个用来保存URL的httppost对象
+        HttpPost httpPost = new HttpPost(mPostUrl);//创建一个httppost对象，用来保存URL
+        httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");//创建一个httppost对象保存URL
+        httpPost.setHeader("AT", "1");
+        return httpPost;
+    }
+
+    private String getResponseContent(HttpEntity entity) throws IOException {//getResponseContent：获取服务器响应的数据，主要通过方法getContentEncoding来获取网上资源，返回这些资源
+        String contentEncoding = null;//通过URL得到HttpEntity对象，如果不为空则使用getContent方法创建一个流将数据从网络都过来
+        if (entity.getContentEncoding() != null) {//代码块：如果获取的内容编码不为空，给内容编码赋值，显示encoding：内容编码
+            contentEncoding = entity.getContentEncoding().getValue();
+            Log.d(TAG, "encoding: " + contentEncoding);//gzip是使用deflate进行压缩数据的一个压缩库
+        }
+
+        InputStream input = entity.getContent();
+        if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {//deflate是一种压缩算法,是huffman编码的一种加强
+            input = new GZIPInputStream(entity.getContent());
+        } else if (contentEncoding != null && contentEncoding.equalsIgnoreCase("deflate")) {//语句：deflate是一种压缩算法
+            Inflater inflater = new Inflater(true);
+            input = new InflaterInputStream(entity.getContent(), inflater);//InflaterInputStream类：实现了一个流过滤器，用于以“deflate”压缩格式解压缩数据
+        }
+
+        try {//完成将字节流数据内容进行存储的功能
+            InputStreamReader isr = new InputStreamReader(input);//InputStreamReader类：是从字节流到字符流的桥接器，它使用指定的字符集读取字节并将它们解码为字符
+            BufferedReader br = new BufferedReader(isr);//缓存读取类，用于快速的读缓存操作
+            StringBuilder sb = new StringBuilder();
+
+            while (true) {//将BufferedReader类br的内容逐行读取并存储StringBuilder类的sb中。然后返回sb的string格式。
+                String buff = br.readLine();
+                if (buff == null) {
+                    return sb.toString();
+                }
+                sb = sb.append(buff);
+            }
+        } finally {
+            input.close();
+        }
+    }
+
+    private JSONObject postRequest(JSONObject js) throws NetworkFailureException {//postRequest：利用JSON发送请求，返回获取的内容
+        if (!mLoggedin) {//未登录，输出提示信息
+            Log.e(TAG, "please login first");
+            throw new ActionFailureException("not logged in");
+        }
+
+        HttpPost httpPost = createHttpPost();//实例化一个httpPost的对象用来向服务器传输数据，发送在js里请求的内容
+        try {//实例化一个对象，用于与服务器交互和发送请求
+            LinkedList<BasicNameValuePair> list = new LinkedList<BasicNameValuePair>();//LinkedList 类：是一个继承于AbstractSequentialList的双向链表
+            list.add(new BasicNameValuePair("r", js.toString()));
+            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");//形式比较单一，是普通的键值对"UTF-8"
+            httpPost.setEntity(entity);//语句：向httpPost对象中添加参数
+
+            // execute the post//响应请求
+            HttpResponse response = mHttpClient.execute(httpPost);//执行请求
+            String jsString = getResponseContent(response.getEntity());
+            return new JSONObject(jsString);
+
+        } catch (ClientProtocolException e) {//下面是几个异常
+            Log.e(TAG, e.toString());//下面是对四种不同的异常出现时的处理
+            e.printStackTrace();
+            throw new NetworkFailureException("postRequest failed");//post请求失败
+        } catch (IOException e) {//post执行时发生异常
+            Log.e(TAG, e.toString());//post执行时发生异常
+            e.printStackTrace();
+            throw new NetworkFailureException("postRequest failed");//createTask：创建一个任务对象
+        } catch (JSONException e) {//创建任务
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("unable to convert response content to jsonobject");
+        } catch (Exception e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("error occurs when posting request");
+        }
+    }
+
+    public void createTask(Task task) throws NetworkFailureException {//方法：创建Task,设置好action的链表、client_version、post
+        commitUpdate();//语句：提交更新
+        try {
+            JSONObject jsPost = new JSONObject();//利用JSON获取Task中的内容，并创建相应的jspost
+            JSONArray actionList = new JSONArray();
+
+            // action_list//操作列表
+            actionList.put(task.getCreateAction(getActionId()));
+            jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);//用户版本
+
+            // client_version
+            jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);//client的版本号
+
+            // post//通过postRequest获取任务的返回信息
+            JSONObject jsResponse = postRequest(jsPost);//postRequest方法：获取任务的返回信息
+            JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
+                    GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
+            task.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
+
+        } catch (JSONException e) {//代码块：对异常情况的处理
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("create task: handing jsonobject failed");
+        }
+    }
+
+    public void createTaskList(TaskList tasklist) throws NetworkFailureException {//createTaskList：创建任务列表，与createTask类似
+        commitUpdate();//提交后更新
+        try {//动作列表
+            JSONObject jsPost = new JSONObject();//操作列表
+            JSONArray actionList = new JSONArray();
+
+            // action_list
+            actionList.put(tasklist.getCreateAction(getActionId()));
+            jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);//客户端版本
+
+            // client version
+            jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+            // post//post操作
+            JSONObject jsResponse = postRequest(jsPost);
+            JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
+                    GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
+            tasklist.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
+
+        } catch (JSONException e) {//创建失败
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("create tasklist: handing jsonobject failed");
+        }
+    }
+
+    public void commitUpdate() throws NetworkFailureException {//提交更新数据，还是利用JSON
+        if (mUpdateArray != null) {
+            try {//新建JSONObject对象，使用jsPost.put( )添加对应关系，使用postRequest( )方法发送jspost，最后给mUpdateArray赋值NULL，表示现在没有内容要更新
+                JSONObject jsPost = new JSONObject();//更新数据
+
+                // action_list
+                jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
+
+                // client_version
+                jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+                postRequest(jsPost);//post操作
+                mUpdateArray = null;//语句：更新处理完毕，列表置空
+            } catch (JSONException e) {//代码块：对异常的处理
+                Log.e(TAG, e.toString());
+                e.printStackTrace();
+                throw new ActionFailureException("commit update: handing jsonobject failed");
+            }
+        }
+    }
+
+    public void addUpdateNode(Node node) throws NetworkFailureException {//添加更新节点，主要利用commitUpdate
+        if (node != null) {//更新太多内容可能导致出现异常
+            // too many update items may result in an error
+            // set max to 10 items
+            if (mUpdateArray != null && mUpdateArray.length() > 10) {//提交后更新
+                commitUpdate();//更新的阵列为空的话就使用JSONArray
+            }
+
+            if (mUpdateArray == null)
+                mUpdateArray = new JSONArray();
+            mUpdateArray.put(node.getUpdateAction(getActionId()));//语句：将更新节点加入列表
+        }
+    }
+
+    public void moveTask(Task task, TaskList preParent, TaskList curParent)//移动一个任务，通过getGid获取task所属的Id，还是通过JSONObject和postRequest实现
+            throws NetworkFailureException {//把任务移动到指定的列表中
+        commitUpdate();//方法：提交更新数据
+        try {
+            JSONObject jsPost = new JSONObject();
+            JSONArray actionList = new JSONArray();
+            JSONObject action = new JSONObject();
+
+            // action_list
+            action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
+            action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
+            action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
+            if (preParent == curParent && task.getPriorSibling() != null) {//只有当移动是发生在任务列表中且不是第一个时设置优先级
+                // put prioring_sibing_id only if moving within the tasklist and
+                // it is not the first one
+                action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
+            }//移动前所属列表
+            action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());//设置当前列表
+            action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());//在不同列表间移动时，放入目标列表中去
+            if (preParent != curParent) {//语句：当移动发生在不同的任务列表之间，设置为dest_list
+                // put the dest_list only if moving between tasklists
+                action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());//将动作列表放入jsPost中
+            }
+            actionList.put(action);
+            jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);//用户版本
+
+            // client_version
+            jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+            postRequest(jsPost);//postRequst()进行更新后的发送
+
+        } catch (JSONException e) {//代码块：异常处理
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("move task: handing jsonobject failed");
+        }
+    }
+
+    public void deleteNode(Node node) throws NetworkFailureException {//删除节点，过程类似移动
+        commitUpdate();
+        try {//代码块：新建jsPost，把除了node的其他节点都放入jsPost，并提交
+            JSONObject jsPost = new JSONObject();
+            JSONArray actionList = new JSONArray();
+
+            // action_list
+            node.setDeleted(true);
+            actionList.put(node.getUpdateAction(getActionId()));// 语句：将该节点要更新的操作的id加入操作列表
+            jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+            // client_version
+            jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+            postRequest(jsPost);
+            mUpdateArray = null;
+        } catch (JSONException e) {//代码块：异常处理
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("delete node: handing jsonobject failed");
+        }
+    }
+
+    public JSONArray getTaskLists() throws NetworkFailureException {//获取任务列表，首先通过getURI在网上获取数据，在截取所需部分内容返回
+        if (!mLoggedin) {//检查是否在登录状态
+            Log.e(TAG, "please login first");
+            throw new ActionFailureException("not logged in");
+        }
+
+        try {//使用url实例化一个获取对象
+            HttpGet httpGet = new HttpGet(mGetUrl);//通过发送HttpPost请求访问HTTP资源
+            HttpResponse response = null;//语句：初始化Httpresponse （回复）为空
+            response = mHttpClient.execute(httpGet);//语句：使用httpget发送一个请求，返回一个response对象
+
+            // get the task list//代码块：获取任务链表，判断resString的开头结尾格式对不对，正确的话则重建一个字符串赋值给jsString，然后用jsString新建一个JSONObject对象js,并通过js调用一系列方法把任务列表返回
+            String resString = getResponseContent(response.getEntity());//获取任务列表
+            String jsBegin = "_setup(";//截取字符串并放入到jsString里
+            String jsEnd = ")}</script>";
+            int begin = resString.indexOf(jsBegin);
+            int end = resString.lastIndexOf(jsEnd);
+            String jsString = null;
+            if (begin != -1 && end != -1 && begin < end) {
+                jsString = resString.substring(begin + jsBegin.length(), end);
+            }
+            JSONObject js = new JSONObject(jsString);
+            return js.getJSONObject("t").getJSONArray(GTaskStringUtils.GTASK_JSON_LISTS);//获取GTASK_JSON_LISTS
+        } catch (ClientProtocolException e) {//捕捉httpget失败异常
+            Log.e(TAG, e.toString());//处理异常
+            e.printStackTrace();
+            throw new NetworkFailureException("gettasklists: httpget failed");
+        } catch (IOException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new NetworkFailureException("gettasklists: httpget failed");
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("get task lists: handing jasonobject failed");
+        }
+    }
+
+    public JSONArray getTaskList(String listGid) throws NetworkFailureException {//方法：对于已经获取的任务列表，可以通过其id来获取到
+        commitUpdate();
+        try {//设置为传入的listGid
+            JSONObject jsPost = new JSONObject();//设置为传入的listGid
+            JSONArray actionList = new JSONArray();
+            JSONObject action = new JSONObject();
+
+            // action_list
+            action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,//通过action.pu()t对JSONObject对象action添加元素，通过jsPost.put()对jsPost添加相关元素，然后通过postRequest()提交更新后的请求并返回一个JSONObject的对象，最后使用jsResponse.getJSONArray( )获取jsResponse中的JSONArray值并作为函数返回值
+                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
+            action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
+            action.put(GTaskStringUtils.GTASK_JSON_LIST_ID, listGid);//这里设置为传入的listGid
+            action.put(GTaskStringUtils.GTASK_JSON_GET_DELETED, false);
+            actionList.put(action);
+            jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
+
+            // client_version
+            jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
+
+            JSONObject jsResponse = postRequest(jsPost);
+            return jsResponse.getJSONArray(GTaskStringUtils.GTASK_JSON_TASKS);
+        } catch (JSONException e) {//代码块：处理异常
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("get task list: handing jsonobject failed");
+        }
+    }
+
+    public Account getSyncAccount() {
+        return mAccount;
+    }//获得同步账户。
+
+    public void resetUpdateArray() {
+        mUpdateArray = null;
+    }//重置更新内容
+}

other/07_210340120_唐志发_代码标注/remote/GTaskManager.doc

@@ -0,0 +1,800 @@
+/*
+ * 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.gtask.remote;//实现同步功能的主函数
+
+import android.app.Activity;//在包里引用各种类
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.util.Log;
+
+import net.micode.notes.R;//引用小米便签中的类
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.data.MetaData;
+import net.micode.notes.gtask.data.Node;
+import net.micode.notes.gtask.data.SqlNote;
+import net.micode.notes.gtask.data.Task;
+import net.micode.notes.gtask.data.TaskList;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.gtask.exception.NetworkFailureException;
+import net.micode.notes.tool.DataUtils;
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+
+
+public class GTaskManager {//声明一个类，类名称的命名规范：所有单词的首字母大写
+    private static final String TAG = GTaskManager.class.getSimpleName();//定义了一系列静态变量来显示GTask当前的状态（1）设置GTask的TAG
+
+    public static final int STATE_SUCCESS = 0;//成功
+
+    public static final int STATE_NETWORK_ERROR = 1;//网络错误
+
+    public static final int STATE_INTERNAL_ERROR = 2;//内部错误
+
+    public static final int STATE_SYNC_IN_PROGRESS = 3;//进程同步中
+
+    public static final int STATE_SYNC_CANCELLED = 4;//取消同步
+
+    private static GTaskManager mInstance = null;//private 定义一系列不可被外部的类访问的量
+
+    private Activity mActivity;//构造函数
+
+    private Context mContext;
+
+    private ContentResolver mContentResolver;
+
+    private boolean mSyncing;
+
+    private boolean mCancelled;
+
+    private HashMap<String, TaskList> mGTaskListHashMap;
+
+    private HashMap<String, Node> mGTaskHashMap;
+
+    private HashMap<String, MetaData> mMetaHashMap;
+
+    private TaskList mMetaList;
+
+    private HashSet<Long> mLocalDeleteIdMap;
+
+    private HashMap<String, Long> mGidToNid;
+
+    private HashMap<Long, String> mNidToGid;
+
+    private GTaskManager() {//方法：类的构造函数，对其内部变量进行初始化
+        mSyncing = false;//正在同步标识，false代表未同步
+        mCancelled = false;
+        mGTaskListHashMap = new HashMap<String, TaskList>();//全局标识，flase代表可以执行
+        mGTaskHashMap = new HashMap<String, Node>();//<>代表Java的泛型,就是创建一个用类型作为参数的类。
+        mMetaHashMap = new HashMap<String, MetaData>();//创建一个删除本地ID的map
+        mMetaList = null;//创建一个删除本地ID的map
+        mLocalDeleteIdMap = new HashSet<Long>();
+        mGidToNid = new HashMap<String, Long>();//建立一个google id到节点id的映射
+        mNidToGid = new HashMap<Long, String>();//创建一个节点id到google id的映射
+    }
+
+    public static synchronized GTaskManager getInstance() {//synchronized指明该函数可以运行在多线程下
+        if (mInstance == null) {//初始化mInstance
+            mInstance = new GTaskManager();//初始化
+        }
+        return mInstance;
+    }
+
+    public synchronized void setActivityContext(Activity activity) {//对类的当前实例进行加锁，防止其他线程同时访问该类的该实例的所有synchronized块
+        // used for getting authtoken//获得操作指令
+        mActivity = activity;
+    }
+
+    public int sync(Context context, GTaskASyncTask asyncTask) {//实现本地和远程同步的操作
+        if (mSyncing) {//正在同步时，日志中写入正在同步
+            Log.d(TAG, "Sync is in progress");//debug，进程已在同步中
+            return STATE_SYNC_IN_PROGRESS;//返回同步状态
+        }
+        mContext = context;//代码块：对同步时GTaskManager的属性进行更新
+        mContentResolver = mContext.getContentResolver();//对GTaskManager的属性进行更新
+        mSyncing = true;//初始化各种标志变量
+        mCancelled = false;
+        mGTaskListHashMap.clear();//各种环境清空
+        mGTaskHashMap.clear();
+        mMetaHashMap.clear();
+        mLocalDeleteIdMap.clear();
+        mGidToNid.clear();
+        mNidToGid.clear();
+
+        try {//异常处理程序
+            GTaskClient client = GTaskClient.getInstance();//创建一个用户的实例
+            client.resetUpdateArray();//getInstance即为创建一个实例
+
+            // login google task //更新数组操作
+            if (!mCancelled) {//登陆用户端
+                if (!client.login(mActivity)) {//执行登录程序，登录到google task
+                    throw new NetworkFailureException("login google task failed");//抛出异常，登录 google 任务失败
+                }
+            }
+
+            // get the task list from google
+            asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list));
+            initGTaskList();//调用下面自定义的方法，初始化GTaskList
+
+            // do content sync work
+            asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing));
+            syncContent();//同步便签内容
+        } catch (NetworkFailureException e) {//网络连接中断
+            Log.e(TAG, e.toString());//获取异常类型和异常详细消息
+            return STATE_NETWORK_ERROR;
+        } catch (ActionFailureException e) {//操作未完成
+            Log.e(TAG, e.toString());
+            return STATE_INTERNAL_ERROR;
+        } catch (Exception e) {//处理各种异常
+            Log.e(TAG, e.toString());//获取异常类型和异常详细消息
+            e.printStackTrace();
+            return STATE_INTERNAL_ERROR;
+        } finally {//代码块：在同步操作结束之后，更新GTaskManager的属性
+            mGTaskListHashMap.clear();//同步结束后清空环境
+            mGTaskHashMap.clear();
+            mMetaHashMap.clear();
+            mLocalDeleteIdMap.clear();
+            mGidToNid.clear();
+            mNidToGid.clear();
+            mSyncing = false;
+        }
+
+        return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS;//语句：若在同步时操作未取消，则说明同步成功，否则返回同步操作取消
+    }
+
+    private void initGTaskList() throws NetworkFailureException {//初始化GTask列表，将google上的JSONTaskList转为本地任务列表
+        if (mCancelled)//是否中途取消
+            return;
+        GTaskClient client = GTaskClient.getInstance();//创建一个用户的实例
+        try {//客户端获取任务列表
+            JSONArray jsTaskLists = client.getTaskLists();//客户端获取任务列表jsTaskLists
+
+            // init meta list first
+            mMetaList = null;//初始化元数据列表
+            for (int i = 0; i < jsTaskLists.length(); i++) {//代码块：对获取到任务列表中的每一个元素进行操作
+                JSONObject object = jsTaskLists.getJSONObject(i);//取出单个JSON对象
+                String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);//获取它的id
+                String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);//获取它的名字
+
+                if (name
+                        .equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) {//如果 name 等于 字符串 "[MIUI_Notes]" + "METADATA"，执行if语句块
+                    mMetaList = new TaskList();//新建数组，并为新建的数组设定内容
+                    mMetaList.setContentByRemoteJSON(object);//新建一个元数据列表
+
+                    // load meta data
+                    JSONArray jsMetas = client.getTaskList(gid);//将JSON中部分数据复制到自己定义的对象中相对应的数据：name->mname...
+                    for (int j = 0; j < jsMetas.length(); j++) {//代码块：把jsMetas里的每一个有识别码的metaData都放到哈希表中
+                        object = (JSONObject) jsMetas.getJSONObject(j);//获取一个JSON类型的对象
+                        MetaData metaData = new MetaData();//新建一个Metadata
+                        metaData.setContentByRemoteJSON(object);//新建MetaData
+                        if (metaData.isWorthSaving()) {//需要保存时，将子任务加入到主任务中
+                            mMetaList.addChildTask(metaData);//新建一个元数据列表。
+                            if (metaData.getGid() != null) {//操作getGid：取得组识别码函数
+                                mMetaHashMap.put(metaData.getRelatedGid(), metaData);//语句：把元数据放到哈希表中
+                            }
+                        }
+                    }
+                }
+            }
+
+            // create meta list if not existed
+            if (mMetaList == null) {//代码块：若元数据列表不存在则创建一个
+                mMetaList = new TaskList();//元数据列表不存在，则在客户端创建一个
+                mMetaList.setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+                        + GTaskStringUtils.FOLDER_META);
+                GTaskClient.getInstance().createTaskList(mMetaList);
+            }
+
+            // init task list
+            for (int i = 0; i < jsTaskLists.length(); i++) {//以下循环用于初始化任务列表
+                JSONObject object = jsTaskLists.getJSONObject(i);//代码块：先获取列表中每一个节点的属性
+                String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);//通过getString函数传入本地某个标志数据的名称，获取其在远端的名称
+                String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);//获取JSON名字
+
+                if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX)
+                        && !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+                                + GTaskStringUtils.FOLDER_META)) {
+                    TaskList tasklist = new TaskList();//语句： 创建一个新的任务列表
+                    tasklist.setContentByRemoteJSON(object);//语句：对任务列表的内容进行设置
+                    mGTaskListHashMap.put(gid, tasklist);//对任务列表的内容进行设置
+                    mGTaskHashMap.put(gid, tasklist);
+
+                    // load tasks
+                    JSONArray jsTasks = client.getTaskList(gid);//获取任务id号
+                    for (int j = 0; j < jsTasks.length(); j++) {//任务id号
+                        object = (JSONObject) jsTasks.getJSONObject(j);
+                        gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);//语句：获取当前任务的gid
+                        Task task = new Task();
+                        task.setContentByRemoteJSON(object);//语句：设置任务内容
+                        if (task.isWorthSaving()) {//语句：判断该任务有无价值保存
+                            task.setMetaInfo(mMetaHashMap.get(gid));//判断该任务是否有价值
+                            tasklist.addChildTask(task);
+                            mGTaskHashMap.put(gid, task);
+                        }
+                    }
+                }
+            }
+        } catch (JSONException e) {//初始化时捕捉异常
+            Log.e(TAG, e.toString());//获取异常类型和异常详细消息
+            e.printStackTrace();
+            throw new ActionFailureException("initGTaskList: handing JSONObject failed");//抛出异常，提交 JSONObject 失败
+        }
+    }
+
+    private void syncContent() throws NetworkFailureException {//实现内容同步
+        int syncType;//本地内容同步操作
+        Cursor c = null;//同步操作类
+        String gid;
+        Node node;//Node包含Sync_Action的不同类型
+
+        mLocalDeleteIdMap.clear();//初始化本地删除列表
+
+        if (mCancelled) {//对于本地已删除的便签采取的动作
+            return;
+        }
+
+        // for local deleted note
+        try {//代码块：对于删除本地便签的操作的同步
+            c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,//语句：指针指向待删除的便签位置
+                    "(type<>? AND parent_id=?)", new String[] {
+                            String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
+                    }, null);
+            if (c != null) {//代码块：若获取到的待删除便签不为空，则进行同步操作
+                while (c.moveToNext()) {//通过while用指针遍历所有结点
+                    gid = c.getString(SqlNote.GTASK_ID_COLUMN);//语句：获取待删除便签的gid
+                    node = mGTaskHashMap.get(gid);//语句：获取待删除便签的节点
+                    if (node != null) {//节点非空则从哈希表里删除，并进行同步操作
+                        mGTaskHashMap.remove(gid);//语句：将待删除的节点对应的google id从映射表中移除
+                        doContentSync(Node.SYNC_ACTION_DEL_REMOTE, node, c);//语句：在远程删除对应节点
+                    }
+
+                    mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));//查找不到时，在日志中记录信息
+                }
+            } else {//若c结点为空，即寻找错误的时候，报错
+                Log.w(TAG, "failed to query trash folder");//警告，询问垃圾文件夹失败
+            }
+        } finally {//代码块：最后把c关闭并重置代码块：
+            if (c != null) {//结束操作之后，将指针指向内容关闭并将指针置空
+                c.close();//记得关闭 cursor 所指文件
+                c = null;//cursor 置空
+            }
+        }
+
+        // sync folder first
+        syncFolder();//语句：对文件夹进行同步
+
+        // for note existing in database
+        try {//对于数据库中已经存在的便签，采取以下操作
+            c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,//语句：使c指针指向待操作的便签位置
+                    "(type=? AND parent_id<>?)", new String[] {//c指针指向待操作的位置
+                            String.valueOf(Notes.TYPE_NOTE), String.valueOf(Notes.ID_TRASH_FOLER)
+                    }, NoteColumns.TYPE + " DESC");
+            if (c != null) {//query语句的用法
+                while (c.moveToNext()) {//语句：指针向后移动
+                    gid = c.getString(SqlNote.GTASK_ID_COLUMN);//语句：获取待操作的便签的gid
+                    node = mGTaskHashMap.get(gid);//语句：获取待操作的便签的节点
+                    if (node != null) {//若结点不为空，将其对应的google id从映射表中移除，然后建立google id到节点id的映射（通过hashmap）、gid和nid之间的映射表
+                        mGTaskHashMap.remove(gid);
+                        mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));//建立google id到节点id的映射
+                        mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);//通过hashmap建立联系
+                        syncType = node.getSyncAction(c);//语句：更新此时的同步类型
+                    } else {//代码块：如果note是空的，则判断c的trim（）的长度是否为0，如果是则设置同步类型为ADD REMOTE,否则设置为DEL LOCAL
+                        if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {//语句：若本地增加了内容，则远程也要增加内容
+                            // local add
+                            syncType = Node.SYNC_ACTION_ADD_REMOTE;//远程增加内容
+                        } else {//语句：若本地删除了内容，则远程也要删除内容应的gid
+                            // remote delete
+                            syncType = Node.SYNC_ACTION_DEL_LOCAL;//本地删除
+                        }
+                    }
+                    doContentSync(syncType, node, c);//进行同步操作
+                }
+            } else {
+                Log.w(TAG, "failed to query existing note in database");//查询失败时在日志中写回错误信息
+            }
+
+        } finally {//代码块：在最后关闭c并重置
+            if (c != null) {//代码块：结束操作之后，将指针指向内容关闭并将指针置空
+                c.close();//关闭 cursor 所指文件
+                c = null;//cursor 置空
+            }
+        }
+
+        // go through remaining items
+        Iterator<Map.Entry<String, Node>> iter = mGTaskHashMap.entrySet().iterator();//扫描剩下的项目，逐个进行同步
+        while (iter.hasNext()) {//迭代
+            Map.Entry<String, Node> entry = iter.next();
+            node = entry.getValue();//getValue()可以获取指定对象的属性值
+            doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);//语句：在本地增加这些节点
+        }
+
+        // mCancelled can be set by another thread, so we neet to check one by
+        // one
+        // clear local delete table
+        if (!mCancelled) {
+            if (!DataUtils.batchDeleteNotes(mContentResolver, mLocalDeleteIdMap)) {//语句：终止标识有可能被其他进程改变，因此需要一个个进行检查
+                throw new ActionFailureException("failed to batch-delete local deleted notes");//终止标识有可能被其他线程改变
+            }
+        }
+
+        // refresh local sync id
+        if (!mCancelled) {//更新同步表
+            GTaskClient.getInstance().commitUpdate();//更新同步表
+            refreshLocalSyncId();//更新同步的id
+        }
+
+    }
+
+    private void syncFolder() throws NetworkFailureException {//同步文件夹
+        Cursor c = null;//同步文件夹
+        String gid;
+        Node node;
+        int syncType;
+
+        if (mCancelled) {//语句：判断是否取消该操作
+            return;
+        }
+
+        // for root folder
+        try {//对于根文件夹
+            c = mContentResolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,//语句：使指针指向根文件夹的位置
+                    Notes.ID_ROOT_FOLDER), SqlNote.PROJECTION_NOTE, null, null, null);//使指针指向根文件夹的位置
+            if (c != null) {
+                c.moveToNext();
+                gid = c.getString(SqlNote.GTASK_ID_COLUMN);//语句：获取指针指向内容对应的gid
+                node = mGTaskHashMap.get(gid);//语句：获取该gid所代表的节点
+                if (node != null) {//获取gid所代表的节点
+                    mGTaskHashMap.remove(gid);
+                    mGidToNid.put(gid, (long) Notes.ID_ROOT_FOLDER);//语句：将该节点的gid到nid的映射加入映射表
+                    mNidToGid.put((long) Notes.ID_ROOT_FOLDER, gid);
+                    // for system folder, only update remote name if necessary
+                    if (!node.getName().equals(//添加MIUI文件前缀
+                            GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT))
+                        doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
+                } else {
+                    doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);//语句：若非系统文件夹则在远程进行增加节点操作
+                }
+            } else {
+                Log.w(TAG, "failed to query root folder");//出现异常时，在日志中写回出错信息
+            }
+        } finally {//结束操作之后，最后将指针关闭，并将指针置空。方法与之前相同
+            if (c != null) {//代码块：结束操作之后，将指针指向内容关闭并将指针置空
+                c.close();//关闭 cursor 所指文件
+                c = null;//cursor 置空
+            }
+        }
+
+        // for call-note folder
+        try {//对于电话号码数据文件
+            c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, "(_id=?)",//语句：使指针指向文件夹的位置
+                    new String[] {//添加MIUI文件前缀
+                        String.valueOf(Notes.ID_CALL_RECORD_FOLDER)//添加MIUI文件前缀
+                    }, null);
+            if (c != null) {
+                if (c.moveToNext()) {
+                    gid = c.getString(SqlNote.GTASK_ID_COLUMN);//语句：获取指针指向内容对应的gid
+                    node = mGTaskHashMap.get(gid);//语句：获取指针指向内容对应的gid
+                    if (node != null) {
+                        mGTaskHashMap.remove(gid);
+                        mGidToNid.put(gid, (long) Notes.ID_CALL_RECORD_FOLDER);//语句：将该节点的gid到nid的映射加入映射表
+                        mNidToGid.put((long) Notes.ID_CALL_RECORD_FOLDER, gid);
+                        // for system folder, only update remote name if
+                        // necessary
+                        if (!node.getName().equals(//语句：若当前访问的文件夹是系统文件夹则只需要更新
+                                GTaskStringUtils.MIUI_FOLDER_PREFFIX//若当前访问的文件夹是系统文件夹则只需更新
+                                        + GTaskStringUtils.FOLDER_CALL_NOTE))
+                            doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
+                    } else {
+                        doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);//语句：若非系统文件夹则在远程进行增加节点操作
+                    }
+                }
+            } else {
+                Log.w(TAG, "failed to query call note folder");//警告，询问通讯便签文件夹失败
+            }
+        } finally {
+            if (c != null) {//代码块：结束操作之后，将指针指向内容关闭并将指针置空
+                c.close();//关闭 cursor 所指文件
+                c = null;//cursor 置空
+            }
+        }
+
+        // for local existing folders
+        try {//对于本地已存在的文件的操作
+            c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,// 语句：使指针指向第一个文件夹的位置
+                    "(type=? AND parent_id<>?)", new String[] {//使指针指向第一个文件夹的位置
+                            String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)
+                    }, NoteColumns.TYPE + " DESC");
+            if (c != null) {
+                while (c.moveToNext()) {//语句：使指针遍历所有的文件夹
+                    gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+                    node = mGTaskHashMap.get(gid);
+                    if (node != null) {
+                        mGTaskHashMap.remove(gid);
+                        mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));//语句：获取指针指向内容对应的gid
+                        mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);//语句：获取指针指向内容对应的gid
+                        syncType = node.getSyncAction(c);//语句：更新同步类型
+                    } else {//更新同步类型
+                        if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {//语句：若本地增加了内容，则远程也要增加内容
+                            // local add
+                            syncType = Node.SYNC_ACTION_ADD_REMOTE;//远程添加
+                        } else {//语句：若远程删除了内容，则本地也要删除内容
+                            // remote delete
+                            syncType = Node.SYNC_ACTION_DEL_LOCAL;//本地删除
+                        }
+                    }
+                    doContentSync(syncType, node, c);//语句：进行同步操作
+                }
+            } else {//进行同步操作
+                Log.w(TAG, "failed to query existing folder");//警告，询问已创建的文件夹失败
+            }
+        } finally {
+            if (c != null) {//代码块：结束操作之后，将指针指向内容关闭并将指针置空
+                c.close();//关闭 cursor 所指文件
+                c = null;//cursor 置空
+            }
+        }
+
+        // for remote add folders
+        Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();//远程添加文件需要执行的操作
+        while (iter.hasNext()) {//语句：使用迭代器对远程增添的内容进行遍
+            Map.Entry<String, TaskList> entry = iter.next();
+            gid = entry.getKey();//语句：获取对应的gid
+            node = entry.getValue();//语句：获取gid对应的节点
+            if (mGTaskHashMap.containsKey(gid)) {
+                mGTaskHashMap.remove(gid);
+                doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);//语句：进行本地增添操作
+            }
+        }
+
+        if (!mCancelled)
+            GTaskClient.getInstance().commitUpdate();//语句：如果没有取消，在GTsk的客户端进行实例的提交更新
+    }
+
+    private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException {//功能：syncType分类
+        if (mCancelled) {//进行本地增添操作
+            return;
+        }
+
+        MetaData meta;
+        switch (syncType) {//根据同步类型选择操作
+            case Node.SYNC_ACTION_ADD_LOCAL://远程添加
+                addLocalNode(node);//本地添加
+                break;
+            case Node.SYNC_ACTION_ADD_REMOTE://本地删除
+                addRemoteNode(node, c);//本地删除
+                break;
+            case Node.SYNC_ACTION_DEL_LOCAL://远程删除
+                meta = mMetaHashMap.get(c.getString(SqlNote.GTASK_ID_COLUMN));
+                if (meta != null) {
+                    GTaskClient.getInstance().deleteNode(meta);
+                }
+                mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
+                break;
+            case Node.SYNC_ACTION_DEL_REMOTE://更新本地数据
+                meta = mMetaHashMap.get(node.getGid());//更新本地数据
+                if (meta != null) {
+                    GTaskClient.getInstance().deleteNode(meta);
+                }
+                GTaskClient.getInstance().deleteNode(node);
+                break;
+            case Node.SYNC_ACTION_UPDATE_LOCAL://更新远程数据
+                updateLocalNode(node, c);
+                break;
+            case Node.SYNC_ACTION_UPDATE_REMOTE:
+                updateRemoteNode(node, c);
+                break;
+            case Node.SYNC_ACTION_UPDATE_CONFLICT://同步出错
+                // merging both modifications maybe a good idea
+                // right now just use local update simply
+                updateRemoteNode(node, c);
+                break;
+            case Node.SYNC_ACTION_NONE://代码块：空操作
+                break;//空操作
+            case Node.SYNC_ACTION_ERROR://代码块：操作错误
+            default://代码块：default:同步类型不在规定的类型范围内
+                throw new ActionFailureException("unkown sync action type");//抛出异常，未知的同步行为类型
+        }
+    }
+
+    private void addLocalNode(Node node) throws NetworkFailureException {//功能：本地增加Node
+        if (mCancelled) {//这个函数是添加本地结点，参数node即为要添加的本地结点
+            return;
+        }
+
+        SqlNote sqlNote;
+        if (node instanceof TaskList) {//节点是任务列表中的一个节点
+            if (node.getName().equals(//代码块：在根目录中增加节点
+                    GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT)) {
+                sqlNote = new SqlNote(mContext, Notes.ID_ROOT_FOLDER);
+            } else if (node.getName().equals(//代码块：在存放电话号码便签的文件夹中增加节点
+                    GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_CALL_NOTE)) {
+                sqlNote = new SqlNote(mContext, Notes.ID_CALL_RECORD_FOLDER);
+            } else {//代码块：如果在其他文件夹里则用一般操作设置sqlNote的参数
+                sqlNote = new SqlNote(mContext);//代码块：若没有存放的文件夹，则将其放在根文件夹中
+                sqlNote.setContent(node.getLocalJSONFromContent());//从本地任务列表中获取内容
+                sqlNote.setParentId(Notes.ID_ROOT_FOLDER);
+            }
+        } else {//代码块：若待增添节点不是任务列表中的节点，进一步操作
+            sqlNote = new SqlNote(mContext);
+            JSONObject js = node.getLocalJSONFromContent();//语句：从待增添节点中获取jsonobject对象
+            try {//异常判断
+                if (js.has(GTaskStringUtils.META_HEAD_NOTE)) {
+                    JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);//语句：获取对应便签的jsonobject对象
+                    if (note.has(NoteColumns.ID)) {//语句：判断便签中是否有条目
+                        long id = note.getLong(NoteColumns.ID);
+                        if (DataUtils.existInNoteDatabase(mContentResolver, id)) {//id存在时删除id
+                            // the id is not available, have to create a new one
+                            note.remove(NoteColumns.ID);
+                        }
+                    }
+                }
+
+                if (js.has(GTaskStringUtils.META_HEAD_DATA)) {//以下为判断便签中的数据条目
+                    JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+                    for (int i = 0; i < dataArray.length(); i++) {//依次删除存在的data的ID
+                        JSONObject data = dataArray.getJSONObject(i);//语句：获取对应数据的jsonobject对象
+                        if (data.has(DataColumns.ID)) {//语句：判断数据中是否有条目
+                            long dataId = data.getLong(DataColumns.ID);
+                            if (DataUtils.existInDataDatabase(mContentResolver, dataId)) {//data id存在时删除已建立的对应ID
+                                // the data id is not available, have to create
+                                // a new one
+                                data.remove(DataColumns.ID);
+                            }
+                        }
+                    }
+
+                }
+            } catch (JSONException e) {//出现异常时，打印异常信息
+                Log.w(TAG, e.toString());//获取异常类型和异常详细消息
+                e.printStackTrace();
+            }
+            sqlNote.setContent(js);//语句：将之前的操作获取到的js更新至该节点中
+
+            Long parentId = mGidToNid.get(((Task) node).getParent().getGid());//代码块：找到父任务的ID号，并作为sqlNote的父任务的ID，没有父任务则报错
+            if (parentId == null) {//语句：当不能找到该任务上一级的id时报错
+                Log.e(TAG, "cannot find task's parent id locally");//本地无法找到父进程id
+                throw new ActionFailureException("cannot add local node");//报告无法添加本地节点
+            }
+            sqlNote.setParentId(parentId.longValue());
+        }
+
+        // create the local node
+        sqlNote.setGtaskId(node.getGid());//设置google task id
+        sqlNote.commit(false);//更新本地便签
+
+        // update gid-nid mapping
+        mGidToNid.put(node.getGid(), sqlNote.getId());//语句：更新gid与nid的映射表
+        mNidToGid.put(sqlNote.getId(), node.getGid());
+
+        // update meta
+        updateRemoteMeta(node.getGid(), sqlNote);//语句：更新远程的数据
+    }
+
+    private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException {//函数：更新本地节点，两个传入参数，一个是待更新的节点，一个是指向待增加位置的指针
+        if (mCancelled) {//如果正在取消同步，直接返回
+            return;
+        }
+
+        SqlNote sqlNote;//新建一个sql节点并将内容存储进Node中
+        // update the note locally
+        sqlNote = new SqlNote(mContext, c);//语句：在指针指向处创建一个新的节点
+        sqlNote.setContent(node.getLocalJSONFromContent());//语句：利用待更新节点中的内容对数据库节点进行设置
+
+        Long parentId = (node instanceof Task) ? mGidToNid.get(((Task) node).getParent().getGid())//语句： 设置父任务的ID，通过判断node是不是Task的实例
+                : new Long(Notes.ID_ROOT_FOLDER);
+        if (parentId == null) {//语句：当不能找到该任务上一级的id时报错
+            Log.e(TAG, "cannot find task's parent id locally");//错误，不能在本地找到任务的父 id
+            throw new ActionFailureException("cannot update local node");//抛出异常，不能更新本地节点
+        }
+        sqlNote.setParentId(parentId.longValue());//设置该任务节点上一级的id
+        sqlNote.commit(true);//抛出异常，不能更新本地节点
+
+        // update meta info
+        updateRemoteMeta(node.getGid(), sqlNote);//升级meta
+    }
+
+    private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException {//添加远程节点
+        if (mCancelled) {//如果正在取消同步，直接返回
+            return;
+        }
+
+        SqlNote sqlNote = new SqlNote(mContext, c);//新建一个sql节点并将内容存储进Node中
+        Node n;
+
+        // update remotely
+        if (sqlNote.isNoteType()) {//语句：若待增添的节点为任务节点，进一步操作
+            Task task = new Task();
+            task.setContentByLocalJSON(sqlNote.getContent());
+
+            String parentGid = mNidToGid.get(sqlNote.getParentId());//找不到parentID时，报错
+            if (parentGid == null) {
+                Log.e(TAG, "cannot find task's parent tasklist");//错误，无法找到任务的父列表
+                throw new ActionFailureException("cannot add remote task");//抛出异常，无法添加云端任务
+            }
+            mGTaskListHashMap.get(parentGid).addChildTask(task);//在本地生成的GTaskList中增加子结点
+
+            GTaskClient.getInstance().createTask(task);//在本地生成的GTaskList中增加子结点
+            n = (Node) task;
+
+            // add meta//添加元数据
+            updateRemoteMeta(task.getGid(), sqlNote);
+        } else {
+            TaskList tasklist = null;
+
+            // we need to skip folder if it has already existed//当文件夹存在则跳过，若不存在则创建新的文件夹
+            String folderName = GTaskStringUtils.MIUI_FOLDER_PREFFIX;//代码块：当文件夹已经存在则跳过处理，若不存在则创建新的文件夹
+            if (sqlNote.getId() == Notes.ID_ROOT_FOLDER)//按照文件夹的形式进行命名
+                folderName += GTaskStringUtils.FOLDER_DEFAULT;//语句：若为根文件夹则按根文件夹命名
+            else if (sqlNote.getId() == Notes.ID_CALL_RECORD_FOLDER)
+                folderName += GTaskStringUtils.FOLDER_CALL_NOTE;//语句：若为电话号码便签文件夹则按电话号码便签命名
+            else
+                folderName += sqlNote.getSnippet();
+
+            Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();//使用iterator作为map接口，对map进行遍历
+            while (iter.hasNext()) {//iterator迭代器，通过统一的接口迭代所有的map元素
+                Map.Entry<String, TaskList> entry = iter.next();
+                String gid = entry.getKey();
+                TaskList list = entry.getValue();
+
+                if (list.getName().equals(folderName)) {//代码块：若寻找到的任务列表已存在，则直接在里面更新
+                    tasklist = list;//找不到可以匹配的任务链
+                    if (mGTaskHashMap.containsKey(gid)) {
+                        mGTaskHashMap.remove(gid);
+                    }
+                    break;
+                }
+            }
+
+            // no match we can add now
+            if (tasklist == null) {//若没有匹配的任务列表，则创建一个新的任务列表
+                tasklist = new TaskList();//直接新建一个任务链
+                tasklist.setContentByLocalJSON(sqlNote.getContent());
+                GTaskClient.getInstance().createTaskList(tasklist);
+                mGTaskListHashMap.put(tasklist.getGid(), tasklist);
+            }
+            n = (Node) tasklist;
+        }
+
+        // update local note//进行本地节点的更新
+        sqlNote.setGtaskId(n.getGid());//创建id间的映射
+        sqlNote.commit(false);
+        sqlNote.resetLocalModified();
+        sqlNote.commit(true);
+
+        // gid-id mapping//进行gid与nid映射关系的更新
+        mGidToNid.put(n.getGid(), sqlNote.getId());//代码块：更新gid-nid映射表
+        mNidToGid.put(sqlNote.getId(), n.getGid());
+    }
+
+    private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException {//更新远程节点
+        if (mCancelled) {//如果正在取消同步，直接返回
+            return;
+        }
+
+        SqlNote sqlNote = new SqlNote(mContext, c);//语句：在指针指向处创建一个新的节点
+
+        // update remotely
+        node.setContentByLocalJSON(sqlNote.getContent());//代码块：远程更新
+        GTaskClient.getInstance().addUpdateNode(node);//GTaskClient用途为从本地登陆远端服务器
+
+        // update meta
+        updateRemoteMeta(node.getGid(), sqlNote);//语句：更新数据
+
+        // move task if necessary
+        if (sqlNote.isNoteType()) {//判断节点类型是否符合要求
+            Task task = (Task) node;//新建一个task节点
+            TaskList preParentList = task.getParent();//找到当前任务列表的父节点google id和之前父任务链
+
+            String curParentGid = mNidToGid.get(sqlNote.getParentId());//curParentGid为通过光标在数据库中找到sqlNote的mParentId，再通过mNidToGid由long类型转为String类型的Gid
+            if (curParentGid == null) {//代码块：找不到当前任务的上一级任务列表，报错
+                Log.e(TAG, "cannot find task's parent tasklist");//错误，无法找到任务的父列表
+                throw new ActionFailureException("cannot update remote task");//抛出异常，无法添加云端任务
+            }
+            TaskList curParentList = mGTaskListHashMap.get(curParentGid);//通过HashMap找到对应Gid的TaskList
+
+            if (preParentList != curParentList) {//语句：若两个上一级任务列表不一致，进行任务的移动，从之前的任务列表中移动到该列表中
+                preParentList.removeChildTask(task);
+                curParentList.addChildTask(task);
+                GTaskClient.getInstance().moveTask(task, preParentList, curParentList);
+            }
+        }
+
+        // clear local modified flag
+        sqlNote.resetLocalModified();//清除本地的modified flag
+        sqlNote.commit(true);
+    }
+
+    private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException {//更新远程元数组的google id和数据库节点
+        if (sqlNote != null && sqlNote.isNoteType()) {//判断节点类型是否符合，类型符合时才进行更新操作
+            MetaData metaData = mMetaHashMap.get(gid);//从google id获取任务列表
+            if (metaData != null) {//语句：若元数据组为空，则创建一个新的元数据组
+                metaData.setMeta(gid, sqlNote.getContent());//任务列表不存在时 新建一个空的任务列表，并将其放入google id中
+                GTaskClient.getInstance().addUpdateNode(metaData);
+            } else {//语句：若元数据组不为空，则进行更新
+                metaData = new MetaData();
+                metaData.setMeta(gid, sqlNote.getContent());
+                mMetaList.addChildTask(metaData);
+                mMetaHashMap.put(gid, metaData);
+                GTaskClient.getInstance().createTask(metaData);
+            }
+        }
+    }
+
+    private void refreshLocalSyncId() throws NetworkFailureException {//刷新本地便签id，从远程同步
+        if (mCancelled) {
+            return;
+        }//获取最近的gtask list
+
+        // get the latest gtask list//获取最新的gtask列表
+        mGTaskHashMap.clear();//否则，初始化hash表
+        mGTaskListHashMap.clear();
+        mMetaHashMap.clear();
+        initGTaskList();
+
+        Cursor c = null;
+        try {
+            c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
+                    "(type<>? AND parent_id<>?)", new String[] {
+                            String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
+                    }, NoteColumns.TYPE + " DESC");//query语句：五个参数，NoteColumns.TYPE + " DESC"-----为按类型递减顺序返回查询结果。newString[{String.valueOf(Notes.TYPE_SYSTEM),String.valueOf(Notes.ID_TRASH_FOLER)}------为选择参数。"(type<>? AND parent_id<>?)"-------指明返回行过滤器。SqlNote.PROJECTION_NOTE--------应返回的数据列的名字。Notes.CONTENT_NOTE_URI--------contentProvider包含所有数据集所对应的uri
+            if (c != null) {
+                while (c.moveToNext()) {//获取最新的GTask列表
+                    String gid = c.getString(SqlNote.GTASK_ID_COLUMN);
+                    Node node = mGTaskHashMap.get(gid);
+                    if (node != null) {
+                        mGTaskHashMap.remove(gid);
+                        ContentValues values = new ContentValues();
+                        values.put(NoteColumns.SYNC_ID, node.getLastModified());//在ContentValues中创建键值对。准备通过contentResolver写入数据
+                        mContentResolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
+                                c.getLong(SqlNote.ID_COLUMN)), values, null, null);
+                    } else {
+                        Log.e(TAG, "something is missed");//错误，部分内容丢失
+                        throw new ActionFailureException(
+                                "some local items don't have gid after sync");
+                    }
+                }
+            } else {//进行批量更改，选择参数为NULL，应该可以用insert替换，参数分别为表名和需要更新的value对象。
+                Log.w(TAG, "failed to query local note to refresh sync id");//警告，询问本地待同步更新的便签 id 失败
+            }
+        } finally {
+            if (c != null) {
+                c.close();
+                c = null;
+            }
+        }
+    }
+
+    public String getSyncAccount() {
+        return GTaskClient.getInstance().getSyncAccount().name;//返回待同步帐户的名称
+    }//获取同步账号
+
+    public void cancelSync() {
+        mCancelled = true;
+    }//取消同步，置mCancelled为true
+}

other/07_210340120_唐志发_代码标注/remote/GTaskSyncService.doc

@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)//GTask同步服务，用于提供同步服务（开始、取消同步），发送广播
+ *
+ * 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.gtask.remote;//Service是Android四大组件之一，通常用作在后台处理耗时的逻辑，不用与用户进行交互，即使应用被销毁依然可以继续工作。
+
+import android.app.Activity;//引用包
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.IBinder;
+
+public class GTaskSyncService extends Service {//Service是在一段不定的时间运行在后台，不和用户交互的应用组件
+    public final static String ACTION_STRING_NAME = "sync_action_type";//定义一系列静态变量
+
+    public final static int ACTION_START_SYNC = 0;//开始同步
+
+    public final static int ACTION_CANCEL_SYNC = 1;//取消同步
+
+    public final static int ACTION_INVALID = 2;//活动非法为2
+
+    public final static String GTASK_SERVICE_BROADCAST_NAME = "net.micode.notes.gtask.remote.gtask_sync_service";//服务广播的名称
+
+    public final static String GTASK_SERVICE_BROADCAST_IS_SYNCING = "isSyncing";//正在同步中
+
+    public final static String GTASK_SERVICE_BROADCAST_PROGRESS_MSG = "progressMsg";//进程消息
+
+    private static GTaskASyncTask mSyncTask = null;
+
+    private static String mSyncProgress = "";
+
+    private void startSync() {//开始同步
+        if (mSyncTask == null) {//若当前没有同步工作，申请一个task并把指针指向新任务，广播后执行
+            mSyncTask = new GTaskASyncTask(this, new GTaskASyncTask.OnCompleteListener() {
+                public void onComplete() {//实现了在GTaskASyncTask类中定义的接口onComplete( )
+                    mSyncTask = null;
+                    sendBroadcast("");//广播同步消息
+                    stopSelf();//当完成所有功能之后，将service停掉
+                }
+            });
+            sendBroadcast("");
+            mSyncTask.execute();//语句：调用同步执行的函数
+        }
+    }
+
+    private void cancelSync() {//取消同步
+        if (mSyncTask != null) {//同步的任务非空
+            mSyncTask.cancelSync();//如果正在同步，结束当前同步
+        }
+    }
+
+    @Override
+    public void onCreate() {
+        mSyncTask = null;
+    }//初始化一个service
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {//充当重启便签指令
+        Bundle bundle = intent.getExtras();//Bundle类用作携带数据，用于存放key-value明值对应形式的值。
+        if (bundle != null && bundle.containsKey(ACTION_STRING_NAME)) {//判断当前的同步状态，根据开始或取消，执行对应操作
+            switch (bundle.getInt(ACTION_STRING_NAME, ACTION_INVALID)) {//判断当前同步状态，启动或取消
+                case ACTION_START_SYNC://启动同步
+                    startSync();
+                    break;
+                case ACTION_CANCEL_SYNC://取消同步
+                    cancelSync();
+                    break;
+                default:
+                    break;
+            }
+            return START_STICKY;//等待新的intent来是这个service继续运行
+        }
+        return super.onStartCommand(intent, flags, startId);//调用父类的函数
+    }
+
+    @Override//处理内存不足的情况，即取消同步
+    public void onLowMemory() {//广播信息msg
+        if (mSyncTask != null) {
+            mSyncTask.cancelSync();
+        }
+    }
+
+    public IBinder onBind(Intent intent) {
+        return null;
+    }//函数：用于绑定操作的函数
+
+    public void sendBroadcast(String msg) {//发送广播内容
+        mSyncProgress = msg;
+        Intent intent = new Intent(GTASK_SERVICE_BROADCAST_NAME);//创建一个新的Intent
+        intent.putExtra(GTASK_SERVICE_BROADCAST_IS_SYNCING, mSyncTask != null);//附加INTENT中的相应参数的值
+        intent.putExtra(GTASK_SERVICE_BROADCAST_PROGRESS_MSG, msg);
+        sendBroadcast(intent);//发送这个通知
+    }
+
+    public static void startSync(Activity activity) {//启动同步
+        GTaskManager.getInstance().setActivityContext(activity);//任务管理器获取活动的内容
+        Intent intent = new Intent(activity, GTaskSyncService.class);//创建新intent
+        intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_START_SYNC);//将之前初始化的各种字符串加入intent
+        activity.startService(intent);//开始同步服务
+    }
+
+    public static void cancelSync(Context context) {//取消同步
+        Intent intent = new Intent(context, GTaskSyncService.class);//显式构建intent，以函数参数context作为第一个参数，以自己GTaskSyncService.class作为目标活动
+        intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_CANCEL_SYNC);//把想要传递的数据暂存到intent中，传递数据以“键值对”形式传入。键为"sync_action_type"，值为1
+        context.startService(intent);//使用startService（）执行intent，在本活动基础上打开GTaskSyncService活动
+    }
+
+    public static boolean isSyncing() {
+        return mSyncTask != null;
+    }//判断当前是否处于同步状态
+
+    public static String getProgressString() {
+        return mSyncProgress;
+    }//返回当前同步状态
+}

other/07_210340121_王霖康_代码标注/gtask/data/MetaData.java

@@ -0,0 +1,118 @@
+/*
+ * 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.gtask.data;
+
+import android.database.Cursor;
+import android.util.Log;
+
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+
+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
+     */
+    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
+     */
+    @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
+     */
+    @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
+     */
+    @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
+     */
+    @Override
+    public JSONObject getLocalJSONFromContent() {
+        throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
+        /*
+         * 传递非法参数异常
+         */
+    }
+
+    @Override
+    public int getSyncAction(Cursor c) {
+        throw new IllegalAccessError("MetaData:getSyncAction should not be called");
+    /*
+         * 传递非法参数异常
+    */
+    }
+
+}

other/07_210340121_王霖康_代码标注/gtask/data/Node.java

@@ -0,0 +1,104 @@
+/*
+ * 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.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
+*/
+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;
+    }
+
+}

other/07_210340121_王霖康_代码标注/gtask/data/SqlData.java

@@ -0,0 +1,218 @@
+/*
+ * 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.
+ */
+/*
+ * Description：用于支持小米便签最底层的数据库相关操作，和sqlnote的关系上是子集关系，即data是note的子集（节点）。
+ * SqlData其实就是也就是所谓数据中的数据
+ */
+package net.micode.notes.gtask.data;
+
+import android.content.ContentResolver;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.NotesDatabaseHelper.TABLE;
+import net.micode.notes.gtask.exception.ActionFailureException;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+
+public class SqlData {
+    /*
+     * 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 static final String TAG = SqlData.class.getSimpleName();
+
+    private static final int INVALID_ID = -99999;
+    /*
+     * 来自Notes类中定义的DataColumn中的一些常量
+     */
+    // 集合了interface DataColumns中所有SF常量
+    public static final String[] PROJECTION_DATA = new String[] {
+            DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1,
+            DataColumns.DATA3
+    };
+/*
+ * 以下五个变量作为sql表中5列的编号
+ */
+    public static final int DATA_ID_COLUMN = 0;
+
+    public static final int DATA_MIME_TYPE_COLUMN = 1;
+
+    public static final int DATA_CONTENT_COLUMN = 2;
+
+    public static final int DATA_CONTENT_DATA_1_COLUMN = 3;
+
+    public static final int DATA_CONTENT_DATA_3_COLUMN = 4;
+
+    private ContentResolver mContentResolver;
+    //判断是否直接用Content生成，是为true，否则为false
+    private boolean mIsCreate;
+
+    private long mDataId;
+
+    private String mDataMimeType;
+
+    private String mDataContent;
+
+    private long mDataContentData1;
+
+    private String mDataContentData3;
+
+    private ContentValues mDiffDataValues;
+    /*
+	 * 功能描述：构造函数，用于初始化数据
+     * 参数注解：mContentResolver用于获取ContentProvider提供的数据
+     * 参数注解： mIsCreate表征当前数据是用哪种方式创建（两种构造函数的参数不同）
+     */
+    public SqlData(Context context) {
+        mContentResolver = context.getContentResolver();
+        mIsCreate = true;
+        mDataId = INVALID_ID;
+        mDataMimeType = DataConstants.NOTE;
+        mDataContent = "";
+        mDataContentData1 = 0;
+        mDataContentData3 = "";
+        mDiffDataValues = new ContentValues();
+    }
+
+    public SqlData(Context context, Cursor c) {
+        mContentResolver = context.getContentResolver();
+        mIsCreate = false;
+        loadFromCursor(c);
+        mDiffDataValues = new ContentValues();
+    }
+    /*
+     * 功能描述：从光标处加载数据
+     * 从当前的光标处将五列的数据加载到该类的对象
+     */
+    private void loadFromCursor(Cursor c) {
+        mDataId = c.getLong(DATA_ID_COLUMN);
+        mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN);
+        mDataContent = c.getString(DATA_CONTENT_COLUMN);
+        mDataContentData1 = c.getLong(DATA_CONTENT_DATA_1_COLUMN);
+        mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN);
+    }
+    /*
+     * 功能描述：设置用于共享的数据，并提供异常抛出与处理机制
+     */
+    public void setContent(JSONObject js) throws JSONException {
+        //如果传入的JSONObject对象中有DataColumns.ID这一项，则设置，否则设为INVALID_ID
+        long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID;
+        if (mIsCreate || mDataId != dataId) {
+            mDiffDataValues.put(DataColumns.ID, dataId);
+        }
+        mDataId = dataId;
+
+        String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE)
+                : DataConstants.NOTE;
+        if (mIsCreate || !mDataMimeType.equals(dataMimeType)) {
+            mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType);
+        }
+        mDataMimeType = dataMimeType;
+
+        String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : "";
+        if (mIsCreate || !mDataContent.equals(dataContent)) {
+            mDiffDataValues.put(DataColumns.CONTENT, dataContent);
+        }
+        mDataContent = dataContent;
+
+        long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0;
+        if (mIsCreate || mDataContentData1 != dataContentData1) {
+            mDiffDataValues.put(DataColumns.DATA1, dataContentData1);
+        }
+        mDataContentData1 = dataContentData1;
+
+        String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : "";
+        if (mIsCreate || !mDataContentData3.equals(dataContentData3)) {
+            mDiffDataValues.put(DataColumns.DATA3, dataContentData3);
+        }
+        mDataContentData3 = dataContentData3;
+    }
+    /*
+     * 功能描述：获取共享的数据内容，并提供异常抛出与处理机制
+     */
+    public JSONObject getContent() throws JSONException {
+        if (mIsCreate) {
+            Log.e(TAG, "it seems that we haven't created this in database yet");
+            return null;
+            //创建JSONObject对象。并将相关数据放入其中，并返回。
+        }
+        JSONObject js = new JSONObject();
+        js.put(DataColumns.ID, mDataId);
+        js.put(DataColumns.MIME_TYPE, mDataMimeType);
+        js.put(DataColumns.CONTENT, mDataContent);
+        js.put(DataColumns.DATA1, mDataContentData1);
+        js.put(DataColumns.DATA3, mDataContentData3);
+        return js;
+    }
+    /*
+     * 功能描述：commit函数用于把当前造作所做的修改保存到数据库
+     */
+    public void commit(long noteId, boolean validateVersion, long version) {
+
+        if (mIsCreate) {
+            if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) {
+                mDiffDataValues.remove(DataColumns.ID);
+            }
+
+            mDiffDataValues.put(DataColumns.NOTE_ID, noteId);
+            Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues);
+            try {
+                mDataId = Long.valueOf(uri.getPathSegments().get(1));
+            } catch (NumberFormatException e) {
+                Log.e(TAG, "Get note id error :" + e.toString());
+                throw new ActionFailureException("create note failed");
+            }
+        } else {
+            if (mDiffDataValues.size() > 0) {
+                int result = 0;
+                if (!validateVersion) {
+                    result = mContentResolver.update(ContentUris.withAppendedId(
+                            Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null);
+                } else {
+                    result = mContentResolver.update(ContentUris.withAppendedId(
+                            Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues,
+                            " ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
+                                    + " WHERE " + NoteColumns.VERSION + "=?)", new String[] {
+                                    String.valueOf(noteId), String.valueOf(version)
+                            });
+                }
+                if (result == 0) {
+                    Log.w(TAG, "there is no update. maybe user updates note when syncing");
+                }
+            }
+        }
+
+        mDiffDataValues.clear();
+        mIsCreate = false;
+    }
+    /*
+     * 功能描述：获取当前id
+     */
+    public long getId() {
+        return mDataId;
+    }
+}

other/07_210340121_王霖康_代码标注/gtask/data/SqlNote.java

@@ -0,0 +1,566 @@
+/*
+ * 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.gtask.data;
+
+import android.appwidget.AppWidgetManager;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+import net.micode.notes.tool.ResourceParser;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+
+
+public class SqlNote {
+    /*
+     * 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 static final String TAG = SqlNote.class.getSimpleName();
+
+    private static final int INVALID_ID = -99999;
+    // 集合了interface NoteColumns中所有SF常量（17个）
+    public static final String[] PROJECTION_NOTE = new String[] {
+            NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
+            NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
+            NoteColumns.NOTES_COUNT, NoteColumns.PARENT_ID, NoteColumns.SNIPPET, NoteColumns.TYPE,
+            NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE, NoteColumns.SYNC_ID,
+            NoteColumns.LOCAL_MODIFIED, NoteColumns.ORIGIN_PARENT_ID, NoteColumns.GTASK_ID,
+            NoteColumns.VERSION
+    };
+
+    public static final int ID_COLUMN = 0;
+
+    public static final int ALERTED_DATE_COLUMN = 1;
+
+    public static final int BG_COLOR_ID_COLUMN = 2;
+
+    public static final int CREATED_DATE_COLUMN = 3;
+
+    public static final int HAS_ATTACHMENT_COLUMN = 4;
+
+    public static final int MODIFIED_DATE_COLUMN = 5;
+
+    public static final int NOTES_COUNT_COLUMN = 6;
+
+    public static final int PARENT_ID_COLUMN = 7;
+
+    public static final int SNIPPET_COLUMN = 8;
+
+    public static final int TYPE_COLUMN = 9;
+
+    public static final int WIDGET_ID_COLUMN = 10;
+
+    public static final int WIDGET_TYPE_COLUMN = 11;
+
+    public static final int SYNC_ID_COLUMN = 12;
+
+    public static final int LOCAL_MODIFIED_COLUMN = 13;
+
+    public static final int ORIGIN_PARENT_ID_COLUMN = 14;
+
+    public static final int GTASK_ID_COLUMN = 15;
+
+    public static final int VERSION_COLUMN = 16;
+    //一下定义了17个内部的变量，其中12个可以由content中获得，5个需要初始化为0或者new
+    private Context mContext;
+
+    private ContentResolver mContentResolver;
+
+    private boolean mIsCreate;
+
+    private long mId;
+
+    private long mAlertDate;
+
+    private int mBgColorId;
+
+    private long mCreatedDate;
+
+    private int mHasAttachment;
+
+    private long mModifiedDate;
+
+    private long mParentId;
+
+    private String mSnippet;
+
+    private int mType;
+
+    private int mWidgetId;
+
+    private int mWidgetType;
+
+    private long mOriginParent;
+
+    private long mVersion;
+
+    private ContentValues mDiffNoteValues;
+
+    private ArrayList<SqlData> mDataList;
+
+
+    /*
+     * 功能描述：构造函数
+     * 参数注解： mIsCreate用于标示构造方式
+     */
+    //构造函数只有context，对所有的变量进行初始化
+    public SqlNote(Context context) {
+        mContext = context;
+        mContentResolver = context.getContentResolver();
+        mIsCreate = true;
+        mId = INVALID_ID;
+        mAlertDate = 0;
+        mBgColorId = ResourceParser.getDefaultBgId(context);
+        mCreatedDate = System.currentTimeMillis();//调用系统函数获得创建时间
+        mHasAttachment = 0;
+        mModifiedDate = System.currentTimeMillis();//最后一次修改时间初始化为创建时间
+        mParentId = 0;
+        mSnippet = "";
+        mType = Notes.TYPE_NOTE;
+        mWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
+        mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
+        mOriginParent = 0;
+        mVersion = 0;
+        mDiffNoteValues = new ContentValues();
+        mDataList = new ArrayList<SqlData>();
+    }
+    /*
+     * 功能描述：构造函数
+     * 参数注解： mIsCreate用于标示构造方式
+     */
+    //构造函数有context和一个数据库的cursor，多数变量通过cursor指向的一条记录直接进行初始化
+    public SqlNote(Context context, Cursor c) {
+        mContext = context;
+        mContentResolver = context.getContentResolver();
+        mIsCreate = false;
+        loadFromCursor(c);
+        mDataList = new ArrayList<SqlData>();
+        if (mType == Notes.TYPE_NOTE)
+            loadDataContent();
+        mDiffNoteValues = new ContentValues();
+    }
+    /*
+     * 功能描述：构造函数
+     * 参数注解： mIsCreate用于标示构造方式
+     */
+    public SqlNote(Context context, long id) {
+        mContext = context;
+        mContentResolver = context.getContentResolver();
+        mIsCreate = false;
+        loadFromCursor(id);
+        mDataList = new ArrayList<SqlData>();
+        if (mType == Notes.TYPE_NOTE)
+            loadDataContent();
+        mDiffNoteValues = new ContentValues();
+
+    }
+/*
+     * 功能描述：通过id从光标处加载数据
+*/
+    private void loadFromCursor(long id) {
+        Cursor c = null;
+        try {
+            c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
+                    new String[] {
+                        String.valueOf(id)
+                    }, null);//通过id获得对应的ContentResolver中的cursor
+            if (c != null) {
+                c.moveToNext();
+                loadFromCursor(c);//然后加载数据进行初始化，这样函数
+
+                //SqlNote(Context context, long id)与SqlNote(Context context, long id)的实现方式基本相同
+            } else {
+                Log.w(TAG, "loadFromCursor: cursor = null");
+            }
+        } finally {
+            if (c != null)
+                c.close();
+        }
+    }
+    /*
+     * 功能描述：通过游标从光标处加载数据
+     */
+
+    private void loadFromCursor(Cursor c) {
+        //直接从一条记录中的获得以下变量的初始值
+        mId = c.getLong(ID_COLUMN);
+        mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
+        mBgColorId = c.getInt(BG_COLOR_ID_COLUMN);
+        mCreatedDate = c.getLong(CREATED_DATE_COLUMN);
+        mHasAttachment = c.getInt(HAS_ATTACHMENT_COLUMN);
+        mModifiedDate = c.getLong(MODIFIED_DATE_COLUMN);
+        mParentId = c.getLong(PARENT_ID_COLUMN);
+        mSnippet = c.getString(SNIPPET_COLUMN);
+        mType = c.getInt(TYPE_COLUMN);
+        mWidgetId = c.getInt(WIDGET_ID_COLUMN);
+        mWidgetType = c.getInt(WIDGET_TYPE_COLUMN);
+        mVersion = c.getLong(VERSION_COLUMN);
+    }
+    /*
+     * 功能描述：通过content机制获取共享数据并加载到数据库当前游标处
+     */
+    private void loadDataContent() {
+        Cursor c = null;
+        mDataList.clear();
+        try {
+            c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
+                    "(note_id=?)", new String[] {
+                        String.valueOf(mId)
+                    }, null);
+            if (c != null) {
+                if (c.getCount() == 0) {
+                    Log.w(TAG, "it seems that the note has not data");
+                    return;
+                }
+                while (c.moveToNext()) {
+                    SqlData data = new SqlData(mContext, c);
+                    mDataList.add(data);
+                }
+            } else {
+                Log.w(TAG, "loadDataContent: cursor = null");
+            }
+        } finally {
+            if (c != null)
+                c.close();
+        }
+    }
+ /*
+     * 功能描述：设置通过content机制用于共享的数据信息
+
+  */
+    public boolean setContent(JSONObject js) {
+        try {
+            JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+            if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
+                Log.w(TAG, "cannot set system folder");
+            } else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
+                // for folder we can only update the snnipet and type
+                String snippet = note.has(NoteColumns.SNIPPET) ? note
+                        .getString(NoteColumns.SNIPPET) : "";
+                if (mIsCreate || !mSnippet.equals(snippet)) {
+                    mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
+                }
+                mSnippet = snippet;
+
+                int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
+                        : Notes.TYPE_NOTE;
+                if (mIsCreate || mType != type) {
+                    mDiffNoteValues.put(NoteColumns.TYPE, type);
+                }
+                mType = type;
+            } else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_NOTE) {
+                JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+                long id = note.has(NoteColumns.ID) ? note.getLong(NoteColumns.ID) : INVALID_ID;
+                if (mIsCreate || mId != id) {
+                    mDiffNoteValues.put(NoteColumns.ID, id);
+                }
+                mId = id;
+
+                long alertDate = note.has(NoteColumns.ALERTED_DATE) ? note
+                        .getLong(NoteColumns.ALERTED_DATE) : 0;
+                if (mIsCreate || mAlertDate != alertDate) {
+                    mDiffNoteValues.put(NoteColumns.ALERTED_DATE, alertDate);
+                }
+                mAlertDate = alertDate;
+
+                int bgColorId = note.has(NoteColumns.BG_COLOR_ID) ? note
+                        .getInt(NoteColumns.BG_COLOR_ID) : ResourceParser.getDefaultBgId(mContext);
+                if (mIsCreate || mBgColorId != bgColorId) {
+                    mDiffNoteValues.put(NoteColumns.BG_COLOR_ID, bgColorId);
+                }
+                mBgColorId = bgColorId;
+
+                long createDate = note.has(NoteColumns.CREATED_DATE) ? note
+                        .getLong(NoteColumns.CREATED_DATE) : System.currentTimeMillis();
+                if (mIsCreate || mCreatedDate != createDate) {
+                    mDiffNoteValues.put(NoteColumns.CREATED_DATE, createDate);
+                }
+                mCreatedDate = createDate;
+
+                int hasAttachment = note.has(NoteColumns.HAS_ATTACHMENT) ? note
+                        .getInt(NoteColumns.HAS_ATTACHMENT) : 0;
+                if (mIsCreate || mHasAttachment != hasAttachment) {
+                    mDiffNoteValues.put(NoteColumns.HAS_ATTACHMENT, hasAttachment);
+                }
+                mHasAttachment = hasAttachment;
+
+                long modifiedDate = note.has(NoteColumns.MODIFIED_DATE) ? note
+                        .getLong(NoteColumns.MODIFIED_DATE) : System.currentTimeMillis();
+                if (mIsCreate || mModifiedDate != modifiedDate) {
+                    mDiffNoteValues.put(NoteColumns.MODIFIED_DATE, modifiedDate);
+                }
+                mModifiedDate = modifiedDate;
+
+                long parentId = note.has(NoteColumns.PARENT_ID) ? note
+                        .getLong(NoteColumns.PARENT_ID) : 0;
+                if (mIsCreate || mParentId != parentId) {
+                    mDiffNoteValues.put(NoteColumns.PARENT_ID, parentId);
+                }
+                mParentId = parentId;
+
+                String snippet = note.has(NoteColumns.SNIPPET) ? note
+                        .getString(NoteColumns.SNIPPET) : "";
+                if (mIsCreate || !mSnippet.equals(snippet)) {
+                    mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
+                }
+                mSnippet = snippet;
+
+                int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
+                        : Notes.TYPE_NOTE;
+                if (mIsCreate || mType != type) {
+                    mDiffNoteValues.put(NoteColumns.TYPE, type);
+                }
+                mType = type;
+
+                int widgetId = note.has(NoteColumns.WIDGET_ID) ? note.getInt(NoteColumns.WIDGET_ID)
+                        : AppWidgetManager.INVALID_APPWIDGET_ID;
+                if (mIsCreate || mWidgetId != widgetId) {
+                    mDiffNoteValues.put(NoteColumns.WIDGET_ID, widgetId);
+                }
+                mWidgetId = widgetId;
+
+                int widgetType = note.has(NoteColumns.WIDGET_TYPE) ? note
+                        .getInt(NoteColumns.WIDGET_TYPE) : Notes.TYPE_WIDGET_INVALIDE;
+                if (mIsCreate || mWidgetType != widgetType) {
+                    mDiffNoteValues.put(NoteColumns.WIDGET_TYPE, widgetType);
+                }
+                mWidgetType = widgetType;
+
+                long originParent = note.has(NoteColumns.ORIGIN_PARENT_ID) ? note
+                        .getLong(NoteColumns.ORIGIN_PARENT_ID) : 0;
+                if (mIsCreate || mOriginParent != originParent) {
+                    mDiffNoteValues.put(NoteColumns.ORIGIN_PARENT_ID, originParent);
+                }
+                mOriginParent = originParent;
+
+                for (int i = 0; i < dataArray.length(); i++) {
+                    JSONObject data = dataArray.getJSONObject(i);
+                    SqlData sqlData = null;
+                    if (data.has(DataColumns.ID)) {
+                        long dataId = data.getLong(DataColumns.ID);
+                        for (SqlData temp : mDataList) {
+                            if (dataId == temp.getId()) {
+                                sqlData = temp;
+                            }
+                        }
+                    }
+
+                    if (sqlData == null) {
+                        sqlData = new SqlData(mContext);
+                        mDataList.add(sqlData);
+                    }
+
+                    sqlData.setContent(data);
+                }
+            }
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            return false;
+        }
+        return true;
+    }
+ /*
+     * 功能描述：获取content机制提供的数据并加载到note中
+  */
+    public JSONObject getContent() {
+        try {
+            JSONObject js = new JSONObject();
+
+            if (mIsCreate) {
+                Log.e(TAG, "it seems that we haven't created this in database yet");
+                return null;
+            }
+
+            JSONObject note = new JSONObject();
+            if (mType == Notes.TYPE_NOTE) {
+                //类型为note时
+                note.put(NoteColumns.ID, mId);
+                note.put(NoteColumns.ALERTED_DATE, mAlertDate);
+                note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
+                note.put(NoteColumns.CREATED_DATE, mCreatedDate);
+                note.put(NoteColumns.HAS_ATTACHMENT, mHasAttachment);
+                note.put(NoteColumns.MODIFIED_DATE, mModifiedDate);
+                note.put(NoteColumns.PARENT_ID, mParentId);
+                note.put(NoteColumns.SNIPPET, mSnippet);
+                note.put(NoteColumns.TYPE, mType);
+                note.put(NoteColumns.WIDGET_ID, mWidgetId);
+                note.put(NoteColumns.WIDGET_TYPE, mWidgetType);
+                note.put(NoteColumns.ORIGIN_PARENT_ID, mOriginParent);
+                js.put(GTaskStringUtils.META_HEAD_NOTE, note);
+
+                JSONArray dataArray = new JSONArray();
+                for (SqlData sqlData : mDataList) {
+                    JSONObject data = sqlData.getContent();
+                    if (data != null) {
+                        dataArray.put(data);
+                    }
+                }
+                js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
+            } else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {
+                note.put(NoteColumns.ID, mId);
+                note.put(NoteColumns.TYPE, mType);
+                note.put(NoteColumns.SNIPPET, mSnippet);
+                js.put(GTaskStringUtils.META_HEAD_NOTE, note);
+            }
+
+            return js;
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+        }
+        return null;
+    }
+/*
+     * 功能描述：给当前id设置父id
+ */
+    public void setParentId(long id) {
+        mParentId = id;
+        mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
+    }
+
+    /*
+     * 功能描述：给当前id设置Gtaskid
+     */
+    public void setGtaskId(String gid) {
+        mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
+    }
+
+    /*
+     * 功能描述：给当前id设置同步id
+
+     */
+    public void setSyncId(long syncId) {
+        mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
+    }
+
+    /*
+     * 功能描述：初始化本地修改，即撤销所有当前修改
+     */
+    public void resetLocalModified() {
+        mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
+    }
+
+    /*
+     * 功能描述：获得当前id
+     */
+    public long getId() {
+        return mId;
+    }
+
+    /*
+     * 功能描述：获得当前id的父id
+     */
+    public long getParentId() {
+        return mParentId;
+    }
+
+    /*
+     * 功能描述：获取小片段即用于显示的部分便签内容
+     */
+    public String getSnippet() {
+        return mSnippet;
+    }
+    /*
+     * 功能描述：判断是否为便签类型
+     */
+    public boolean isNoteType() {
+        return mType == Notes.TYPE_NOTE;
+    }
+
+    /*
+     * 功能描述：commit函数用于把当前造作所做的修改保存到数据库
+     */
+    public void commit(boolean validateVersion) {
+        if (mIsCreate) {
+            if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
+                mDiffNoteValues.remove(NoteColumns.ID);
+            }
+
+            Uri uri = mContentResolver.insert(Notes.CONTENT_NOTE_URI, mDiffNoteValues);
+            try {
+                mId = Long.valueOf(uri.getPathSegments().get(1));
+            } catch (NumberFormatException e) {
+                Log.e(TAG, "Get note id error :" + e.toString());
+                throw new ActionFailureException("create note failed");
+            }
+            if (mId == 0) {
+                throw new IllegalStateException("Create thread id failed");
+            }
+
+            if (mType == Notes.TYPE_NOTE) {
+                for (SqlData sqlData : mDataList) {
+                    //直接使用sqldata中的实现
+                    sqlData.commit(mId, false, -1);
+                }
+            }
+        } else {
+            if (mId <= 0 && mId != Notes.ID_ROOT_FOLDER && mId != Notes.ID_CALL_RECORD_FOLDER) {
+                Log.e(TAG, "No such note");
+                throw new IllegalStateException("Try to update note with invalid id");
+            }
+            if (mDiffNoteValues.size() > 0) {
+                mVersion ++;
+                int result = 0;
+                if (!validateVersion) {
+                    //构造字符串
+                    result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
+                            + NoteColumns.ID + "=?)", new String[] {
+                        String.valueOf(mId)
+                    });
+                } else {
+                    result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
+                            + NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
+                            new String[] {
+                                    String.valueOf(mId), String.valueOf(mVersion)
+                            });
+                }
+                if (result == 0) {
+                    Log.w(TAG, "there is no update. maybe user updates note when syncing");
+                }
+            }
+
+            if (mType == Notes.TYPE_NOTE) {
+                for (SqlData sqlData : mDataList) {
+                    sqlData.commit(mId, validateVersion, mVersion);
+                }
+            }
+        }
+
+        // refresh local info
+        loadFromCursor(mId);
+        if (mType == Notes.TYPE_NOTE)
+            loadDataContent();
+
+        mDiffNoteValues.clear();
+        mIsCreate = false;
+    }
+}

other/07_210340121_王霖康_代码标注/gtask/data/Task.java

@@ -0,0 +1,351 @@
+/*
+ * 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.gtask.data;
+
+import android.database.Cursor;
+import android.text.TextUtils;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.DataColumns;
+import net.micode.notes.data.Notes.DataConstants;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+
+public class Task extends Node {
+    private static final String TAG = Task.class.getSimpleName();
+
+    private boolean mCompleted;//是否完成
+
+    private String mNotes;
+
+    private JSONObject mMetaInfo;//将在实例中存储数据的类型
+
+    private Task mPriorSibling;//对应的优先兄弟Task的指针（待完善）
+
+    private TaskList mParent;//所在的任务列表的指针
+
+    public Task() {
+        super();
+        mCompleted = false;
+        mNotes = null;
+        mPriorSibling = null;//TaskList中当前Task前面的Task的指针
+        mParent = null;//当前Task所在的TaskList
+        mMetaInfo = null;
+    }
+
+    public JSONObject getCreateAction(int actionId) {
+        JSONObject js = new JSONObject();
+
+        try {
+            // action_type
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
+
+            // action_id
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+            // index
+            js.put(GTaskStringUtils.GTASK_JSON_INDEX, mParent.getChildTaskIndex(this));
+
+            // entity_delta
+            JSONObject entity = new JSONObject();
+            entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+            entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
+            entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
+                    GTaskStringUtils.GTASK_JSON_TYPE_TASK);
+            if (getNotes() != null) {
+                entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
+            }
+            js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+            // parent_id
+            js.put(GTaskStringUtils.GTASK_JSON_PARENT_ID, mParent.getGid());
+
+            // dest_parent_type
+            js.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT_TYPE,
+                    GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
+
+            // list_id
+            js.put(GTaskStringUtils.GTASK_JSON_LIST_ID, mParent.getGid());
+
+            // prior_sibling_id
+            if (mPriorSibling != null) {
+                js.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, mPriorSibling.getGid());
+            }
+
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("fail to generate task-create jsonobject");
+        }
+
+        return js;
+    }
+
+    public JSONObject getUpdateAction(int actionId) {
+        JSONObject js = new JSONObject();
+
+        try {
+            // action_type
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
+
+            // action_id
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+            // id
+            js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
+
+            // entity_delta
+            JSONObject entity = new JSONObject();
+            entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+            if (getNotes() != null) {
+                entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
+            }
+            entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
+            js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("fail to generate task-update jsonobject");
+        }
+
+        return js;
+    }
+
+    public void setContentByRemoteJSON(JSONObject js) {
+        if (js != null) {
+            try {
+                // id
+                if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
+                    setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
+                }
+
+                // last_modified
+                if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
+                    setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
+                }
+
+                // name
+                if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
+                    setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
+                }
+
+                // notes
+                if (js.has(GTaskStringUtils.GTASK_JSON_NOTES)) {
+                    setNotes(js.getString(GTaskStringUtils.GTASK_JSON_NOTES));
+                }
+
+                // deleted
+                if (js.has(GTaskStringUtils.GTASK_JSON_DELETED)) {
+                    setDeleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_DELETED));
+                }
+
+                // completed
+                if (js.has(GTaskStringUtils.GTASK_JSON_COMPLETED)) {
+                    setCompleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_COMPLETED));
+                }
+            } catch (JSONException e) {
+                Log.e(TAG, e.toString());
+                e.printStackTrace();
+                throw new ActionFailureException("fail to get task content from jsonobject");
+            }
+        }
+    }
+
+    public void setContentByLocalJSON(JSONObject js) {
+        if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)
+                || !js.has(GTaskStringUtils.META_HEAD_DATA)) {
+            Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
+        }
+
+        try {
+            JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+            JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+
+            if (note.getInt(NoteColumns.TYPE) != Notes.TYPE_NOTE) {
+                Log.e(TAG, "invalid type");
+                return;
+            }
+
+            for (int i = 0; i < dataArray.length(); i++) {
+                JSONObject data = dataArray.getJSONObject(i);
+                if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
+                    setName(data.getString(DataColumns.CONTENT));
+                    break;
+                }
+            }
+
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+        }
+    }
+
+    public JSONObject getLocalJSONFromContent() {
+        String name = getName();
+        try {
+            if (mMetaInfo == null) {
+                // new task created from web
+                if (name == null) {
+                    Log.w(TAG, "the note seems to be an empty one");
+                    return null;
+                }
+
+                JSONObject js = new JSONObject();
+                JSONObject note = new JSONObject();
+                JSONArray dataArray = new JSONArray();
+                JSONObject data = new JSONObject();
+                data.put(DataColumns.CONTENT, name);
+                dataArray.put(data);
+                js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
+                note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
+                js.put(GTaskStringUtils.META_HEAD_NOTE, note);
+                return js;
+            } else {
+                // synced task
+                JSONObject note = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+                JSONArray dataArray = mMetaInfo.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
+
+                for (int i = 0; i < dataArray.length(); i++) {
+                    JSONObject data = dataArray.getJSONObject(i);
+                    if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
+                        data.put(DataColumns.CONTENT, getName());
+                        break;
+                    }
+                }
+
+                note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
+                return mMetaInfo;
+            }
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public void setMetaInfo(MetaData metaData) {
+        if (metaData != null && metaData.getNotes() != null) {
+            try {
+                mMetaInfo = new JSONObject(metaData.getNotes());
+            } catch (JSONException e) {
+                Log.w(TAG, e.toString());
+                mMetaInfo = null;
+            }
+        }
+    }
+
+    public int getSyncAction(Cursor c) {
+        try {
+            JSONObject noteInfo = null;
+            if (mMetaInfo != null && mMetaInfo.has(GTaskStringUtils.META_HEAD_NOTE)) {
+                noteInfo = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+            }
+
+            if (noteInfo == null) {
+                Log.w(TAG, "it seems that note meta has been deleted");
+                return SYNC_ACTION_UPDATE_REMOTE;
+            }
+
+            if (!noteInfo.has(NoteColumns.ID)) {
+                Log.w(TAG, "remote note id seems to be deleted");
+                return SYNC_ACTION_UPDATE_LOCAL;
+            }
+
+            // validate the note id now
+            if (c.getLong(SqlNote.ID_COLUMN) != noteInfo.getLong(NoteColumns.ID)) {
+                Log.w(TAG, "note id doesn't match");
+                return SYNC_ACTION_UPDATE_LOCAL;
+            }
+
+            if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
+                // there is no local update
+                if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+                    // no update both side
+                    return SYNC_ACTION_NONE;
+                } else {
+                    // apply remote to local
+                    return SYNC_ACTION_UPDATE_LOCAL;
+                }
+            } else {
+                // validate gtask id
+                if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
+                    Log.e(TAG, "gtask id doesn't match");
+                    return SYNC_ACTION_ERROR;
+                }
+                if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+                    // local modification only
+                    return SYNC_ACTION_UPDATE_REMOTE;
+                } else {
+                    return SYNC_ACTION_UPDATE_CONFLICT;
+                }
+            }
+        } catch (Exception e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+        }
+
+        return SYNC_ACTION_ERROR;
+    }
+
+    public boolean isWorthSaving() {
+        return mMetaInfo != null || (getName() != null && getName().trim().length() > 0)
+                || (getNotes() != null && getNotes().trim().length() > 0);
+    }
+
+    public void setCompleted(boolean completed) {
+        this.mCompleted = completed;
+    }
+
+    public void setNotes(String notes) {
+        this.mNotes = notes;
+    }
+
+    public void setPriorSibling(Task priorSibling) {
+        this.mPriorSibling = priorSibling;
+    }
+
+    public void setParent(TaskList parent) {
+        this.mParent = parent;
+    }
+
+    public boolean getCompleted() {
+        return this.mCompleted;
+    }
+
+    public String getNotes() {
+        return this.mNotes;
+    }
+
+    public Task getPriorSibling() {
+        return this.mPriorSibling;
+    }
+
+    public TaskList getParent() {
+        return this.mParent;
+    }
+
+}

other/07_210340121_王霖康_代码标注/gtask/data/TaskList.java

@@ -0,0 +1,401 @@
+/*
+ * 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.gtask.data;
+
+import android.database.Cursor;
+import android.util.Log;
+
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.gtask.exception.ActionFailureException;
+import net.micode.notes.tool.GTaskStringUtils;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.ArrayList;
+
+
+public class TaskList extends Node {
+    private static final String TAG = TaskList.class.getSimpleName();//tag标记
+
+    private int mIndex;//当前TaskList的指针
+
+    private ArrayList<Task> mChildren;//类中主要的保存数据的单元，用来实现一个以Task为元素的ArrayList
+
+    public TaskList() {
+        super();
+        mChildren = new ArrayList<Task>();
+        mIndex = 1;
+    }
+    /* (non-Javadoc)
+     * @see net.micode.notes.gtask.data.Node#getCreateAction(int)
+     * 生成并返回一个包含了一定数据的JSONObject实体
+     */
+    public JSONObject getCreateAction(int actionId) {
+        JSONObject js = new JSONObject();
+
+        try {
+            // action_type
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
+
+            // action_id
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+            // index
+            js.put(GTaskStringUtils.GTASK_JSON_INDEX, mIndex);
+
+            // entity_delta
+            JSONObject entity = new JSONObject();
+            entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+            entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
+            entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
+                    GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
+            js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("fail to generate tasklist-create jsonobject");
+        }
+
+        return js;
+    }
+
+
+    /* (non-Javadoc)
+     * @see net.micode.notes.gtask.data.Node#getUpdateAction(int)
+     * 生成并返回一个包含了一定数据的JSONObject实体
+     */
+    public JSONObject getUpdateAction(int actionId) {
+        JSONObject js = new JSONObject();
+
+        try {
+            // action_type
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
+                    GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
+
+            // action_id
+            js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
+
+            // id
+            js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
+
+            // entity_delta
+            JSONObject entity = new JSONObject();
+            entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
+            entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
+            js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
+
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            throw new ActionFailureException("fail to generate tasklist-update jsonobject");
+        }
+
+        return js;
+    }
+
+    public void setContentByRemoteJSON(JSONObject js) {
+        if (js != null) {
+            try {
+                // id
+                if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
+                    setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
+                }
+
+                // last_modified
+                if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
+                    setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
+                }
+
+                // name
+                if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
+                    setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
+                }
+
+            } catch (JSONException e) {
+                Log.e(TAG, e.toString());
+                e.printStackTrace();
+                throw new ActionFailureException("fail to get tasklist content from jsonobject");
+            }
+        }
+    }
+
+    public void setContentByLocalJSON(JSONObject js) {
+        if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)) {
+            Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
+        }
+
+        try {
+            JSONObject folder = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
+
+            if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
+                String name = folder.getString(NoteColumns.SNIPPET);
+                setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + name);
+            } else if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
+                if (folder.getLong(NoteColumns.ID) == Notes.ID_ROOT_FOLDER)
+                    setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT);
+                else if (folder.getLong(NoteColumns.ID) == Notes.ID_CALL_RECORD_FOLDER)
+                    setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+                            + GTaskStringUtils.FOLDER_CALL_NOTE);
+                else
+                    Log.e(TAG, "invalid system folder");
+            } else {
+                Log.e(TAG, "error type");
+            }
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+        }
+    }
+
+    public JSONObject getLocalJSONFromContent() {
+        try {
+            JSONObject js = new JSONObject();
+            JSONObject folder = new JSONObject();
+
+            String folderName = getName();
+            if (getName().startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX))
+                folderName = folderName.substring(GTaskStringUtils.MIUI_FOLDER_PREFFIX.length(),
+                        folderName.length());
+            folder.put(NoteColumns.SNIPPET, folderName);
+            if (folderName.equals(GTaskStringUtils.FOLDER_DEFAULT)
+                    || folderName.equals(GTaskStringUtils.FOLDER_CALL_NOTE))
+                folder.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
+            else
+                folder.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
+
+            js.put(GTaskStringUtils.META_HEAD_NOTE, folder);
+
+            return js;
+        } catch (JSONException e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public int getSyncAction(Cursor c) {
+        try {
+            if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
+                // there is no local update
+                if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+                    // no update both side
+                    return SYNC_ACTION_NONE;
+                } else {
+                    // apply remote to local
+                    return SYNC_ACTION_UPDATE_LOCAL;
+                }
+            } else {
+                // validate gtask id
+                if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
+                    Log.e(TAG, "gtask id doesn't match");
+                    return SYNC_ACTION_ERROR;
+                }
+                if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
+                    // local modification only
+                    return SYNC_ACTION_UPDATE_REMOTE;
+                } else {
+                    // for folder conflicts, just apply local modification
+                    return SYNC_ACTION_UPDATE_REMOTE;
+                }
+            }
+        } catch (Exception e) {
+            Log.e(TAG, e.toString());
+            e.printStackTrace();
+        }
+
+        return SYNC_ACTION_ERROR;
+    }
+    /*
+     * 功能：获得TaskList的大小，即mChildren的大小
+     */
+    public int getChildTaskCount() {
+        return mChildren.size();
+    }
+    /**
+     * @param task
+     * @return 返回值为是否成功添加任务。
+     * 功能：在当前任务表末尾添加新的任务。
+     */
+    public boolean addChildTask(Task task) {
+        boolean ret = false;
+        if (task != null && !mChildren.contains(task)) {
+            ret = mChildren.add(task);
+            if (ret) {
+                // need to set prior sibling and parent
+                task.setPriorSibling(mChildren.isEmpty() ? null : mChildren
+                        .get(mChildren.size() - 1));
+                task.setParent(this);
+                //注意：每一次ArrayList的变化都要紧跟相关Task中PriorSibling的更改
+                //，接下来几个函数都有相关操作
+
+            }
+        }
+        return ret;
+    }
+    /**
+     * @param task
+     * @param index
+     * @return
+     * 功能：在当前任务表的指定位置添加新的任务。
+     */
+    public boolean addChildTask(Task task, int index) {
+        if (index < 0 || index > mChildren.size()) {
+            Log.e(TAG, "add child task: invalid index");
+            return false;
+        }
+
+        int pos = mChildren.indexOf(task);
+        if (task != null && pos == -1) {
+            mChildren.add(index, task);
+
+            // update the task list
+            Task preTask = null;
+            Task afterTask = null;
+            if (index != 0)
+                preTask = mChildren.get(index - 1);
+            if (index != mChildren.size() - 1)
+                afterTask = mChildren.get(index + 1);
+
+            task.setPriorSibling(preTask);
+            if (afterTask != null)
+                afterTask.setPriorSibling(task);
+        }
+
+        return true;
+    }
+    /**
+     * @param task
+     * @return 返回删除是否成功
+     * 功能：删除TaskList中的一个Task
+     */
+    /**
+     * @param task
+     * @param index
+     * @return
+     * 功能：将当前TaskList中含有的某个Task移到index位置
+     */
+    public boolean removeChildTask(Task task) {
+        boolean ret = false;
+        int index = mChildren.indexOf(task);
+        if (index != -1) {
+            ret = mChildren.remove(task);
+
+            if (ret) {
+                // reset prior sibling and parent
+                task.setPriorSibling(null);
+                task.setParent(null);
+
+                // update the task list
+                if (index != mChildren.size()) {
+                    mChildren.get(index).setPriorSibling(
+                            index == 0 ? null : mChildren.get(index - 1));
+                }
+            }
+        }
+        return ret;
+    }
+       /**
+     * @param gid
+     * @return返回寻找结果
+     * 功能：按gid寻找Task
+     */
+    public boolean moveChildTask(Task task, int index) {
+
+        if (index < 0 || index >= mChildren.size()) {
+            Log.e(TAG, "move child task: invalid index");
+            return false;
+        }
+
+        int pos = mChildren.indexOf(task);
+        if (pos == -1) {
+            Log.e(TAG, "move child task: the task should in the list");
+            return false;
+        }
+
+        if (pos == index)
+            return true;
+        return (removeChildTask(task) && addChildTask(task, index));
+        //利用已实现好的功能完成当下功能；
+    }
+
+
+    /**
+     * @param task
+     * @return
+     * 功能：返回指定Task的index
+     */
+    public Task findChildTaskByGid(String gid) {
+        for (int i = 0; i < mChildren.size(); i++) {
+            Task t = mChildren.get(i);
+            if (t.getGid().equals(gid)) {
+                return t;
+            }
+        }
+        return null;
+    }
+
+
+    /**
+     * @param index
+     * @return
+     * 功能：返回指定index的Task
+     */
+    public int getChildTaskIndex(Task task) {
+        return mChildren.indexOf(task);
+    }
+
+    public Task getChildTaskByIndex(int index) {
+        if (index < 0 || index >= mChildren.size()) {
+            Log.e(TAG, "getTaskByIndex: invalid index");
+            return null;
+        }
+        return mChildren.get(index);
+    }
+
+
+    /**
+     * @param gid
+     * @return
+     * 功能：返回指定gid的Task
+     */
+    public Task getChilTaskByGid(String gid) {
+        for (Task task : mChildren) {//一种常见的ArrayList的遍历方法（四种，见精读笔记）
+
+            if (task.getGid().equals(gid))
+                return task;
+        }
+        return null;
+    }
+
+
+
+    public ArrayList<Task> getChildTaskList() {
+        return this.mChildren;
+    }
+
+    public void setIndex(int index) {
+        this.mIndex = index;
+    }
+
+    public int getIndex() {
+        return this.mIndex;
+    }
+}

src/.gradle/buildOutputCleanup/cache.properties

@@ -0,0 +1,2 @@
+#Fri Apr 07 15:33:17 CST 2023
+gradle.version=7.5

src/.idea/compiler.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>

src/.idea/gradle.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleHome" value="$PROJECT_DIR$/../gradle-8.0.2" />
+        <option name="gradleJvm" value="jbr-11" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

src/.idea/jarRepositories.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>

src/.idea/misc.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="jbr-11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

src/app/.idea/gradle.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleHome" value="$PROJECT_DIR$/../../gradle-8.0.2" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

src/app/.idea/misc.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Android Studio default JDK" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

src/app/.idea/workspace.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="NONE" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="63d402ba-e296-4bf0-a498-7b96b335bce7" name="变更" comment="" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ProjectId" id="2P35ITg8ZBF4JZu3OwS7u3jWkAI" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.OpenProjectViewOnStart": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "RunOnceActivity.cidr.known.project.marker": "true",
+    "cidr.known.project.marker": "true",
+    "last_opened_file_path": "D:/MI_Note/beifen1"
+  }
+}]]></component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="应用程序级" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="默认任务">
+      <changelist id="63d402ba-e296-4bf0-a498-7b96b335bce7" name="变更" comment="" />
+      <created>1682672845153</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1682672845153</updated>
+    </task>
+    <servers />
+  </component>
+</project>

src/app/build.gradle

@@ -0,0 +1,20 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 33
+    buildToolsVersion "33.0.2"
+    useLibrary 'org.apache.http.legacy'
+
+    defaultConfig {
+        applicationId "net.micode.notes"
+        minSdkVersion 14
+        targetSdkVersion 14
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+}

src/app/build/generated/source/buildConfig/debug/net/micode/notes/BuildConfig.java

@@ -0,0 +1,12 @@
+/**
+ * Automatically generated file. DO NOT MODIFY
+ */
+package net.micode.notes;
+
+public final class BuildConfig {
+  public static final boolean DEBUG = Boolean.parseBoolean("true");
+  public static final String APPLICATION_ID = "net.micode.notes";
+  public static final String BUILD_TYPE = "debug";
+  public static final int VERSION_CODE = 1;
+  public static final String VERSION_NAME = "0.1";
+}

src/app/build/generated/source/buildConfig/release/net/micode/notes/BuildConfig.java

@@ -0,0 +1,12 @@
+/**
+ * Automatically generated file. DO NOT MODIFY
+ */
+package net.micode.notes;
+
+public final class BuildConfig {
+  public static final boolean DEBUG = false;
+  public static final String APPLICATION_ID = "net.micode.notes";
+  public static final String BUILD_TYPE = "release";
+  public static final int VERSION_CODE = 1;
+  public static final String VERSION_NAME = "0.1";
+}

src/app/build/intermediates/annotation_processor_list/debug/annotationProcessors.json

@@ -0,0 +1 @@
+{}