micode

src/AndroidCode/Notesmaster/.idea/compiler.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="21" />
+    <bytecodeTargetLevel target="17" />
   </component>
 </project>

src/AndroidCode/Notesmaster/.idea/gradle.xml

@@ -4,7 +4,6 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
-        <option name="testRunner" value="CHOOSE_PER_TEST" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
         <option name="modules">

src/AndroidCode/Notesmaster/.idea/misc.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

src/AndroidCode/Notesmaster/app/build.gradle.kts

@@ -5,13 +5,6 @@ plugins {
 android {
     namespace = "net.micode.notes"
     compileSdk = 34
-    packaging {
-        resources.excludes.add("META-INF/DEPENDENCIES");
-        resources.excludes.add("META-INF/NOTICE");
-        resources.excludes.add("META-INF/LICENSE");
-        resources.excludes.add("META-INF/LICENSE.txt");
-        resources.excludes.add("META-INF/NOTICE.txt");
-    }
 
     defaultConfig {
         applicationId = "net.micode.notes"
@@ -33,8 +26,15 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    packaging {
+        resources.excludes.add("META-INF/DEPENDENCIES");
+        resources.excludes.add("META-INF/NOTICE");
+        resources.excludes.add("META-INF/LICENSE");
+        resources.excludes.add("META-INF/LICENSE.txt");
+        resources.excludes.add("META-INF/NOTICE.txt");
     }
 }
 
@@ -44,9 +44,10 @@ dependencies {
     implementation(libs.material)
     implementation(libs.activity)
     implementation(libs.constraintlayout)
-    implementation(files("D:\\Z\\httpcomponents-client-4.5.14-bin\\lib\\httpclient-osgi-4.5.14.jar"))
-    implementation(files("D:\\Z\\httpcomponents-client-4.5.14-bin\\lib\\httpclient-win-4.5.14.jar"))
-    implementation(files("D:\\Z\\httpcomponents-client-4.5.14-bin\\lib\\httpcore-4.4.16.jar"))
+
+    implementation(files("D:\\Code\\AndroidCode\\Notesmaster\\httpcomponents-client-4.5.14-bin\\lib\\httpclient-osgi-4.5.14.jar"))
+    implementation(files("D:\\Code\\AndroidCode\\Notesmaster\\httpcomponents-client-4.5.14-bin\\lib\\httpclient-win-4.5.14.jar"))
+    implementation(files("D:\\Code\\AndroidCode\\Notesmaster\\httpcomponents-client-4.5.14-bin\\lib\\httpcore-4.4.16.jar"))
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)

src/AndroidCode/Notesmaster/app/src/main/AndroidManifest.xml

@@ -0,0 +1,156 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_CONTACTS" />
+    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
+    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
+    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
+    <uses-permission android:name="android.permission.USE_CREDENTIALS" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Notesmaster"
+        tools:targetApi="31">
+
+        <activity
+            android:name=".ui.NotesListActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:label="@string/app_name"
+            android:launchMode="singleTop"
+            android:theme="@style/NoteTheme"
+            android:uiOptions="splitActionBarWhenNarrow"
+            android:windowSoftInputMode="adjustPan"
+            android:exported="true">
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity
+            android:name=".ui.NoteEditActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:launchMode="singleTop"
+            android:theme="@style/NoteTheme"
+            android:exported="true">
+
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="vnd.android.cursor.item/text_note" />
+                <data android:mimeType="vnd.android.cursor.item/call_note" />
+            </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.INSERT_OR_EDIT" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="vnd.android.cursor.item/text_note" />
+                <data android:mimeType="vnd.android.cursor.item/call_note" />
+            </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.app.searchable"
+                android:resource="@xml/searchable" />
+        </activity>
+
+
+        <provider
+            android:name="net.micode.notes.data.NotesProvider"
+            android:authorities="micode_notes"
+            android:multiprocess="true" />
+
+        <receiver
+            android:name=".widget.NoteWidgetProvider_2x"
+            android:label="@string/app_widget2x2"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+                <action android:name="android.appwidget.action.APPWIDGET_DELETED" />
+                <action android:name="android.intent.action.PRIVACY_MODE_CHANGED" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_2x_info" />
+        </receiver>
+        <receiver
+            android:name=".widget.NoteWidgetProvider_4x"
+            android:label="@string/app_widget4x4"
+            android:exported="true">
+
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+                <action android:name="android.appwidget.action.APPWIDGET_DELETED" />
+                <action android:name="android.intent.action.PRIVACY_MODE_CHANGED" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_4x_info" />
+        </receiver>
+
+        <receiver android:name=".ui.AlarmInitReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
+
+        <receiver
+            android:name="net.micode.notes.ui.AlarmReceiver"
+            android:process=":remote" >
+        </receiver>
+
+        <activity
+            android:name=".ui.AlarmAlertActivity"
+            android:label="@string/app_name"
+            android:launchMode="singleInstance"
+            android:theme="@android:style/Theme.Holo.Wallpaper.NoTitleBar" >
+        </activity>
+
+        <activity
+            android:name="net.micode.notes.ui.NotesPreferenceActivity"
+            android:label="@string/preferences_title"
+            android:launchMode="singleTop"
+            android:theme="@android:style/Theme.Holo.Light" >
+        </activity>
+
+        <service
+            android:name="net.micode.notes.gtask.remote.GTaskSyncService"
+            android:exported="false" >
+        </service>
+
+        <meta-data
+            android:name="android.app.default_searchable"
+            android:value=".ui.NoteEditActivity" />
+
+        <!--        <activity-->
+        <!--            android:name=".MainActivity"-->
+        <!--            android:exported="true">-->
+        <!--            <intent-filter>-->
+        <!--                <action android:name="android.intent.action.MAIN" />-->
+
+        <!--                <category android:name="android.intent.category.LAUNCHER" />-->
+        <!--            </intent-filter>-->
+        <!--        </activity>-->
+
+    </application>
+
+</manifest>

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/data/Contact.java

@@ -25,37 +25,41 @@ import android.util.Log;
 
 import java.util.HashMap;
 
-public class Contact {//联系人
+
+
+
+public class Contact {
     private static HashMap<String, String> sContactCache;
+    //sContactCache：一个静态的 HashMap，用于缓存电话号码到联系人姓名的映射，以避免重复查询数据库。
     private static final String TAG = "Contact";
-    // 定义字符串CALLER_ID_SELECTION
+    //TAG：一个用于日志输出的标签。
+    //CALLER_ID_SELECTION：一个 SQL 查询的选择条件字符串，用于筛选与给定电话号码匹配的联系人。
     private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
     + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
     + " AND " + Data.RAW_CONTACT_ID + " IN "
             + "(SELECT raw_contact_id "
             + " FROM phone_lookup"
             + " WHERE min_match = '+')";
-
+    //getContact(Context context, String phoneNumber)：这是一个静态方法，接收一个 Context 对象和一个电话号码字符串作为参数，
+    // 返回与该电话号码匹配的联系人姓名。如果找到匹配的联系人，则将该电话号码和姓名添加到 sContactCache 中，以便未来快速查询。
     public static String getContact(Context context, String phoneNumber) {
         if(sContactCache == null) {
             sContactCache = new HashMap<String, String>();
         }
-        // 查找HashMap中是否已有phoneNumber信息
+
         if(sContactCache.containsKey(phoneNumber)) {
             return sContactCache.get(phoneNumber);
         }
 
         String selection = CALLER_ID_SELECTION.replace("+",
                 PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
-        // 查找数据库中phoneNumber的信息
         Cursor cursor = context.getContentResolver().query(
                 Data.CONTENT_URI,
                 new String [] { Phone.DISPLAY_NAME },
                 selection,
                 new String[] { phoneNumber },
                 null);
-        // 判定查询结果
-        // moveToFirst()返回第一条
+
         if (cursor != null && cursor.moveToFirst()) {
             try {
                 String name = cursor.getString(0);

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/data/Notes.java

@@ -14,20 +14,23 @@
  * limitations under the License.
  */
 
+
+
 package net.micode.notes.data;
 
 import android.net.Uri;
-
-// Notes 类中定义了很多常量，这些常量大多是int型和string型
 public class Notes {
     public static final String AUTHORITY = "micode_notes";
     public static final String TAG = "Notes";
-
-    //以下三个常量对NoteColumns.TYPE的值进行设置时会用到
     public static final int TYPE_NOTE     = 0;
     public static final int TYPE_FOLDER   = 1;
     public static final int TYPE_SYSTEM   = 2;
-
+//权限字符串（AUTHORITY）：用于内容提供者（Content Provider）的权限控制，确保数据的安全访问。
+//日志标签（TAG）：用于日志记录，便于开发者在日志输出中快速定位与笔记应用相关的日志信息。
+//数据项类型：
+//TYPE_NOTE：表示普通笔记项。
+//TYPE_FOLDER：表示用于组织笔记的文件夹项。
+//TYPE_SYSTEM：表示系统级数据项，如应用设置或用户信息。
     /**
      * Following IDs are system folders' identifiers
      * {@link Notes#ID_ROOT_FOLDER } is default folder
@@ -38,33 +41,48 @@ public class Notes {
     public static final int ID_TEMPARAY_FOLDER = -1;
     public static final int ID_CALL_RECORD_FOLDER = -2;
     public static final int ID_TRASH_FOLER = -3;
-
+//ID_ROOT_FOLDER：根文件夹的ID，值为0。
+//ID_TEMPORARY_FOLDER：临时文件夹的ID，值为-1。这个文件夹可能用于存储临时笔记或草稿。
+//ID_CALL_RECORD_FOLDER：通话记录文件夹的ID，值为-2。这个文件夹可能专门用于存储与电话通话相关的笔记。
+//ID_TRASH_FOLDER：垃圾箱文件夹的ID，值为-3。用于存储被用户删除的笔记，可能提供恢复功能
     public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
     public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
     public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
     public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
     public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
     public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
-
+   //INTENT_EXTRA_ALERT_DATE：用于指定提醒日期的键。
+   //INTENT_EXTRA_BACKGROUND_ID：用于指定背景颜色ID的键。
+   //INTENT_EXTRA_WIDGET_ID：用于指定小部件ID的键。
+   //INTENT_EXTRA_WIDGET_TYPE：用于指定小部件类型的键。
+   //INTENT_EXTRA_FOLDER_ID：用于指定文件夹ID的键。
+   //INTENT_EXTRA_CALL_DATE：用于指定通话日期的键。
     public static final int TYPE_WIDGET_INVALIDE      = -1;
     public static final int TYPE_WIDGET_2X            = 0;
     public static final int TYPE_WIDGET_4X            = 1;
-
+    //小部件类型常量：
+    //TYPE_WIDGET_INVALID：无效的小部件类型，值为-1。可能用于表示小部件类型未设置或错误。
     public static class DataConstants {
         public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
         public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
+        //NOTE：普通文本笔记的内容类型
+        // CALL_NOTE：通话记录笔记的内容类型
     }
 
     /**
      * Uri to query all notes and folders
      */
     public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
+    //CONTENT_NOTE_URI：用于访问笔记内容的URI。
 
     /**
      * Uri to query data
      */
     public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
+    //CONTENT_DATA_URI：用于查询数据的URI。
 
+    //定义了一系列与笔记和文件夹相关的列名（字段名），如ID、父ID、创建日期、修改日期、提醒日期、摘要、小部件ID、小部件类型、背景颜色ID等。
+    //还包括了是否包含附件、笔记计数、类型、同步ID、本地修改标志、原始父ID、GTask ID和版本等字段。
     public interface NoteColumns {
         /**
          * The unique ID for a row
@@ -170,7 +188,8 @@ public class Notes {
          */
         public static final String VERSION = "version";
     }
-
+    //定义了一系列与数据项相关的列名，如ID、MIME类型、所属笔记ID、创建日期、修改日期和内容等。
+    //还包含了泛型数据列DATA1至DATA5，这些列的具体含义取决于MIME类型。
     public interface DataColumns {
         /**
          * The unique ID for a row
@@ -244,7 +263,9 @@ public class Notes {
          */
         public static final String DATA5 = "data5";
     }
-
+    //实现了DataColumns接口，表示文本笔记。
+    //定义了检查列表模式（MODE）和相关的常量。
+    //提供了文本笔记的内容类型和URI。
     public static final class TextNote implements DataColumns {
         /**
          * Mode to indicate the text in check list mode or not
@@ -260,7 +281,9 @@ public class Notes {
 
         public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
     }
-
+    //同样实现了DataColumns接口，表示通话记录笔记。
+    //定义了通话日期（CALL_DATE）和电话号码（PHONE_NUMBER）等字段。
+    //提供了通话记录笔记的内容类型和URI。
     public static final class CallNote implements DataColumns {
         /**
          * Call date for this record

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/data/NotesDatabaseHelper.java

@@ -32,7 +32,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
 
     private static final int DB_VERSION = 4;
 
-    public interface TABLE {  //接口，分成note和data，在后面的程序里分别使用过
+    public interface TABLE {    //接口，分成note和data，在后面的程序里分别使用过
         public static final String NOTE = "note";
 
         public static final String DATA = "data";
@@ -43,173 +43,172 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     private static NotesDatabaseHelper mInstance;
 
     private static final String CREATE_NOTE_TABLE_SQL =
-        "CREATE TABLE " + TABLE.NOTE + "(" +
-            NoteColumns.ID + " INTEGER PRIMARY KEY," +
-            NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
-            NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
-            NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
-            NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
-            NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
-            NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
-        ")";//数据库中需要存储的项目的名称，就相当于创建一个表格的表头的内容。
+            "CREATE TABLE " + TABLE.NOTE + "(" +
+                    NoteColumns.ID + " INTEGER PRIMARY KEY," +
+                    NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+                    NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+                    NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
+                    NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
+                    NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
+                    NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
+                    ")";//数据库中需要存储的项目的名称，就相当于创建一个表格的表头的内容。
 
     private static final String CREATE_DATA_TABLE_SQL =
-        "CREATE TABLE " + TABLE.DATA + "(" +
-            DataColumns.ID + " INTEGER PRIMARY KEY," +
-            DataColumns.MIME_TYPE + " TEXT NOT NULL," +
-            DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
-            NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
-            NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
-            DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
-            DataColumns.DATA1 + " INTEGER," +
-            DataColumns.DATA2 + " INTEGER," +
-            DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
-            DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
-            DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
-        ")";//和上面的功能一样，主要是存储的项目不同
+            "CREATE TABLE " + TABLE.DATA + "(" +
+                    DataColumns.ID + " INTEGER PRIMARY KEY," +
+                    DataColumns.MIME_TYPE + " TEXT NOT NULL," +
+                    DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+                    NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
+                    DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
+                    DataColumns.DATA1 + " INTEGER," +
+                    DataColumns.DATA2 + " INTEGER," +
+                    DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
+                    DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
+                    DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
+                    ")";//和上面的功能一样，主要是存储的项目不同
 
     private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
-        "CREATE INDEX IF NOT EXISTS note_id_index ON " +
-        TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";//存储便签编号的一个数据表格
+            "CREATE INDEX IF NOT EXISTS note_id_index ON " +
+                    TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";//存储便签编号的一个数据表格
 
     /**
      * Increase folder's note count when move note to the folder
      */
     private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
-        "CREATE TRIGGER increase_folder_count_on_update "+
-        " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
-        " BEGIN " +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
-        "  WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
-        " END";//在文件夹中移入一个Note之后需要更改的数据的表格
+            "CREATE TRIGGER increase_folder_count_on_update "+
+                    " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
+                    " BEGIN " +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
+                    "  WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
+                    " END";//在文件夹中移入一个Note之后需要更改的数据的表格。
 
     /**
      * Decrease folder's note count when move note from folder
      */
     private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
-        "CREATE TRIGGER decrease_folder_count_on_update " +
-        " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
-        " BEGIN " +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
-        "  WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
-        "  AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
-        " END";//在文件夹中移出一个Note之后需要更改的数据的表格
+            "CREATE TRIGGER decrease_folder_count_on_update " +
+                    " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
+                    " BEGIN " +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
+                    "  WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
+                    "  AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
+                    " END";//在文件夹中移出一个Note之后需要更改的数据的表格。
 
     /**
      * Increase folder's note count when insert new note to the folder
      */
     private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
-        "CREATE TRIGGER increase_folder_count_on_insert " +
-        " AFTER INSERT ON " + TABLE.NOTE +
-        " BEGIN " +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
-        "  WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
-        " END";//在文件夹中插入一个Note之后需要更改的数据的表格。
+            "CREATE TRIGGER increase_folder_count_on_insert " +
+                    " AFTER INSERT ON " + TABLE.NOTE +
+                    " BEGIN " +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
+                    "  WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
+                    " END";//在文件夹中插入一个Note之后需要更改的数据的表格。
 
     /**
      * Decrease folder's note count when delete note from the folder
      */
     private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
-        "CREATE TRIGGER decrease_folder_count_on_delete " +
-        " AFTER DELETE ON " + TABLE.NOTE +
-        " BEGIN " +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
-        "  WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
-        "  AND " + NoteColumns.NOTES_COUNT + ">0;" +
-        " END";//在文件夹中删除一个Note之后需要更改的数据的表格。
+            "CREATE TRIGGER decrease_folder_count_on_delete " +
+                    " AFTER DELETE ON " + TABLE.NOTE +
+                    " BEGIN " +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
+                    "  WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
+                    "  AND " + NoteColumns.NOTES_COUNT + ">0;" +
+                    " END";//在文件夹中删除一个Note之后需要更改的数据的表格。
 
     /**
      * Update note's content when insert data with type {@link DataConstants#NOTE}
      */
     private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
-        "CREATE TRIGGER update_note_content_on_insert " +
-        " AFTER INSERT ON " + TABLE.DATA +
-        " WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
-        " BEGIN" +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
-        "  WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
-        " END";//在文件夹中对一个Note导入新的数据之后需要更改的数据的表格。
-
+            "CREATE TRIGGER update_note_content_on_insert " +
+                    " AFTER INSERT ON " + TABLE.DATA +
+                    " WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
+                    " BEGIN" +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
+                    "  WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
+                    " END";//在文件夹中对一个Note导入新的数据之后需要更改的数据的表格。
 
     /**
      * Update note's content when data with {@link DataConstants#NOTE} type has changed
      */
     private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
-        "CREATE TRIGGER update_note_content_on_update " +
-        " AFTER UPDATE ON " + TABLE.DATA +
-        " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
-        " BEGIN" +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
-        "  WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
-        " END";//Note数据被修改后需要更改的数据的表格
+            "CREATE TRIGGER update_note_content_on_update " +
+                    " AFTER UPDATE ON " + TABLE.DATA +
+                    " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
+                    " BEGIN" +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
+                    "  WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
+                    " END";//Note数据被修改后需要更改的数据的表格。
 
     /**
      * Update note's content when data with {@link DataConstants#NOTE} type has deleted
      */
     private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
-        "CREATE TRIGGER update_note_content_on_delete " +
-        " AFTER delete ON " + TABLE.DATA +
-        " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
-        " BEGIN" +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.SNIPPET + "=''" +
-        "  WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
-        " END";//Note数据被删除后需要更改的数据的表格
+            "CREATE TRIGGER update_note_content_on_delete " +
+                    " AFTER delete ON " + TABLE.DATA +
+                    " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
+                    " BEGIN" +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.SNIPPET + "=''" +
+                    "  WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
+                    " END";//Note数据被删除后需要更改的数据的表格。
 
     /**
      * Delete datas belong to note which has been deleted
      */
     private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
-        "CREATE TRIGGER delete_data_on_delete " +
-        " AFTER DELETE ON " + TABLE.NOTE +
-        " BEGIN" +
-        "  DELETE FROM " + TABLE.DATA +
-        "   WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
-        " END";//删除已删除的便签的数据后需要更改的数据的表格。
+            "CREATE TRIGGER delete_data_on_delete " +
+                    " AFTER DELETE ON " + TABLE.NOTE +
+                    " BEGIN" +
+                    "  DELETE FROM " + TABLE.DATA +
+                    "   WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
+                    " END";//删除已删除的便签的数据后需要更改的数据的表格。
 
     /**
      * Delete notes belong to folder which has been deleted
      */
     private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
-        "CREATE TRIGGER folder_delete_notes_on_delete " +
-        " AFTER DELETE ON " + TABLE.NOTE +
-        " BEGIN" +
-        "  DELETE FROM " + TABLE.NOTE +
-        "   WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
-        " END";//删除已删除的文件夹的便签后需要更改的数据的表格
+            "CREATE TRIGGER folder_delete_notes_on_delete " +
+                    " AFTER DELETE ON " + TABLE.NOTE +
+                    " BEGIN" +
+                    "  DELETE FROM " + TABLE.NOTE +
+                    "   WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
+                    " END";//删除已删除的文件夹的便签后需要更改的数据的表格。
 
     /**
      * Move notes belong to folder which has been moved to trash folder
      */
     private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
-        "CREATE TRIGGER folder_move_notes_on_trash " +
-        " AFTER UPDATE ON " + TABLE.NOTE +
-        " WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
-        " BEGIN" +
-        "  UPDATE " + TABLE.NOTE +
-        "   SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
-        "  WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
-        " END";//还原垃圾桶中便签后需要更改的数据的表格。
+            "CREATE TRIGGER folder_move_notes_on_trash " +
+                    " AFTER UPDATE ON " + TABLE.NOTE +
+                    " WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
+                    " BEGIN" +
+                    "  UPDATE " + TABLE.NOTE +
+                    "   SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
+                    "  WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
+                    " END";//还原垃圾桶中便签后需要更改的数据的表格。
 
     public NotesDatabaseHelper(Context context) {
         super(context, DB_NAME, null, DB_VERSION);
-    }
+    }//构造函数，传入数据库的名称和版本
 
     public void createNoteTable(SQLiteDatabase db) {
         db.execSQL(CREATE_NOTE_TABLE_SQL);
@@ -237,7 +236,6 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     }//execSQL是数据库操作的API，主要是更改行为的SQL语句。
     //在这里主要是用来重新创建上述定义的表格用的，先删除原来有的数据库的触发器再重新创建新的数据库
 
-
     private void createSystemFolder(SQLiteDatabase db) {
         ContentValues values = new ContentValues();
 
@@ -288,7 +286,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
         db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
         db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
-    }
+    }//同上面的execSQL
 
     static synchronized NotesDatabaseHelper getInstance(Context context) {
         if (mInstance == null) {
@@ -336,7 +334,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
             throw new IllegalStateException("Upgrade notes database to version " + newVersion
                     + "fails");
         }
-    }//数据库版本的更新（数据库内容的更改
+    }//数据库版本的更新（数据库内容的更改）
 
     private void upgradeToV2(SQLiteDatabase db) {
         db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
@@ -363,5 +361,5 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     private void upgradeToV4(SQLiteDatabase db) {
         db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
                 + " INTEGER NOT NULL DEFAULT 0");
-    }
+    }//更新到V4版本,但是不知道V2、V3、V4是什么意思
 }

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/data/NotesProvider.java

@@ -16,7 +16,6 @@
 
 package net.micode.notes.data;
 
-
 import android.app.SearchManager;
 import android.content.ContentProvider;
 import android.content.ContentUris;
@@ -33,7 +32,6 @@ import net.micode.notes.R;
 import net.micode.notes.data.Notes.DataColumns;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.data.NotesDatabaseHelper.TABLE;
-
 //为存储和获取数据提供接口。可以在不同的应用程序之间共享数据
 //ContentProvider提供的方法
 //query：查询
@@ -74,19 +72,20 @@ public class NotesProvider extends ContentProvider {
      * x'0A' represents the '\n' character in sqlite. For title and content in the search result,
      * we will trim '\n' and white space in order to show more information.
      */
+    // 声明 NOTES_SEARCH_PROJECTION
     private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
-        + NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
-        + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
-        + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_2 + ","
-        + R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
-        + "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
-        + "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
-
+            + NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
+            + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
+            + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_2 + ","
+            + R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
+            + "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
+            + "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
+    // 声明NOTES_SNIPPET_SEARCH_QUERY
     private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
-        + " FROM " + TABLE.NOTE
-        + " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
-        + " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
-        + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
+            + " FROM " + TABLE.NOTE
+            + " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
+            + " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
+            + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
 
     @Override
     // Context只有在onCreate()中才被初始化
@@ -99,11 +98,12 @@ public class NotesProvider extends ContentProvider {
     @Override
     // 查询uri在数据库中对应的位置
     public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
-            String sortOrder) {
+                        String sortOrder) {
         Cursor c = null;
         // 获取可读数据库
         SQLiteDatabase db = mHelper.getReadableDatabase();
         String id = null;
+        // 匹配查找uri
         switch (mMatcher.match(uri)) {
             // 对于不同的匹配值，在数据库中查找相应的条目
             case URI_NOTE:
@@ -135,6 +135,8 @@ public class NotesProvider extends ContentProvider {
                 String searchString = null;
                 if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
                     if (uri.getPathSegments().size() > 1) {
+                        // getPathSegments()方法得到一个String的List，
+                        // 在uri.getPathSegments().get(1)为第2个元素
                         searchString = uri.getPathSegments().get(1);
                     }
                 } else {
@@ -187,6 +189,7 @@ public class NotesProvider extends ContentProvider {
                 throw new IllegalArgumentException("Unknown URI " + uri);
         }
         // Notify the note uri
+        // notifyChange获得一个ContextResolver对象并且更新里面的内容
         if (noteId > 0) {
             getContext().getContentResolver().notifyChange(
                     ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
@@ -206,9 +209,9 @@ public class NotesProvider extends ContentProvider {
     // 删除一个uri
     public int delete(Uri uri, String selection, String[] selectionArgs) {
         //Uri代表要操作的数据，Android上可用的每种资源 -包括 图像、视频片段、音频资源等都可以用Uri来表示。
-
         int count = 0;
         String id = null;
+        // 获得可写的数据库
         SQLiteDatabase db = mHelper.getWritableDatabase();
         boolean deleteData = false;
         switch (mMatcher.match(uri)) {

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/gtask/data/MetaData.java

@@ -24,31 +24,39 @@ import net.micode.notes.tool.GTaskStringUtils;
 import org.json.JSONException;
 import org.json.JSONObject;
 
-
+// MetaData类，继承自Task类，用于处理任务的元数据
 public class MetaData extends Task {
+    // 定义日志标签，用于日志输出
     private final static String TAG = MetaData.class.getSimpleName();
-
+    // 与当前元数据相关的GID（Group ID或其他标识），初始化为null
     private String mRelatedGid = null;
-
+    // 设置元数据的方法，接收GID和JSON格式的元数据信息
     public void setMeta(String gid, JSONObject metaInfo) {
         try {
+            // 将GID添加到metaInfo JSON对象中
             metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
         } catch (JSONException e) {
+            // 如果添加GID失败，则记录错误日志
             Log.e(TAG, "failed to put related gid");
         }
+        // 将metaInfo转换为字符串并设置为任务的笔记内容
         setNotes(metaInfo.toString());
+        // 设置任务的名称为一个特定的元数据名称
         setName(GTaskStringUtils.META_NOTE_NAME);
     }
 
+    // 获取与当前元数据相关的GID
     public String getRelatedGid() {
         return mRelatedGid;
     }
 
+    // 判断当前元数据是否值得保存（即是否有笔记内容）
     @Override
     public boolean isWorthSaving() {
         return getNotes() != null;
     }
 
+    // 根据远程JSON对象设置元数据内容
     @Override
     public void setContentByRemoteJSON(JSONObject js) {
         super.setContentByRemoteJSON(js);
@@ -57,23 +65,24 @@ public class MetaData extends Task {
                 JSONObject metaInfo = new JSONObject(getNotes().trim());
                 mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
             } catch (JSONException e) {
+                // 如果解析失败，则记录警告日志，并将GID设置为null
                 Log.w(TAG, "failed to get related gid");
                 mRelatedGid = null;
             }
         }
     }
-
+    // 根据本地JSON对象设置元数据内容
     @Override
     public void setContentByLocalJSON(JSONObject js) {
         // this function should not be called
         throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
     }
-
+    // 从内容中获取本地JSON对象
     @Override
     public JSONObject getLocalJSONFromContent() {
         throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
     }
-
+    //根据Cursor对象获取同步动作
     @Override
     public int getSyncAction(Cursor c) {
         throw new IllegalAccessError("MetaData:getSyncAction should not be called");

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/gtask/data/Node.java

@@ -19,8 +19,9 @@ package net.micode.notes.gtask.data;
 import android.database.Cursor;
 
 import org.json.JSONObject;
-
+// Node抽象类，定义了节点的基本属性和同步操作
 public abstract class Node {
+    // 定义的常量
     public static final int SYNC_ACTION_NONE = 0;
 
     public static final int SYNC_ACTION_ADD_REMOTE = 1;
@@ -38,24 +39,24 @@ public abstract class Node {
     public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
 
     public static final int SYNC_ACTION_ERROR = 8;
-
+    // 节点的属性
     private String mGid;
 
     private String mName;
 
     private long mLastModified;
 
-    private boolean mDeleted;
-
+    private boolean mDeleted;// 是否已删除
+    // 无参构造函数，初始化节点属性
     public Node() {
         mGid = null;
         mName = "";
         mLastModified = 0;
         mDeleted = false;
     }
-
+    // 用于获取创建节点的操作JSON对象
     public abstract JSONObject getCreateAction(int actionId);
-
+    // 用于获取更新节点的操作JSON对象
     public abstract JSONObject getUpdateAction(int actionId);
 
     public abstract void setContentByRemoteJSON(JSONObject js);
@@ -89,11 +90,11 @@ public abstract class Node {
     public String getName() {
         return this.mName;
     }
-
+    // 用于获取节点的最后修改时间戳
     public long getLastModified() {
         return this.mLastModified;
     }
-
+    // 用于获取节点的删除状态
     public boolean getDeleted() {
         return this.mDeleted;
     }

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/model/Note.java

@@ -15,15 +15,15 @@
  */
 
 package net.micode.notes.model;
-import android.content.ContentProviderOperation;
-import android.content.ContentProviderResult;
-import android.content.ContentUris;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.OperationApplicationException;
-import android.net.Uri;
-import android.os.RemoteException;
-import android.util.Log;
+import android.content.ContentProviderOperation;//批量的更新、插入、删除数据
+import android.content.ContentProviderResult;//操作的结果
+import android.content.ContentUris;//用于添加和获取Uri后面的ID
+import android.content.ContentValues;//一种用来存储基本数据类型数据的存储机制
+import android.content.Context;//需要用该类来弄清楚调用者的实例
+import android.content.OperationApplicationException;//操作应用程序容错
+import android.net.Uri;//表示待操作的数据
+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;
 import net.micode.notes.data.Notes.CallNote;
@@ -34,6 +34,8 @@ import net.micode.notes.data.Notes.TextNote;
 import java.util.ArrayList;
 
 
+
+
 public class Note {
     private ContentValues mNoteDiffValues;
     private NoteData mNoteData;
@@ -51,7 +53,8 @@ public class Note {
         values.put(NoteColumns.LOCAL_MODIFIED, 1);
         values.put(NoteColumns.PARENT_ID, folderId);
         Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
-
+        //ContentResolver()主要是实现外部应用对ContentProvider中的数据
+        //进行添加、删除、修改和查询操作
         long noteId = 0;
         try {
             noteId = Long.valueOf(uri.getPathSegments().get(1));
@@ -68,37 +71,38 @@ public class Note {
     public Note() {
         mNoteDiffValues = new ContentValues();
         mNoteData = new NoteData();
-    }
+    }//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
 
     public void setNoteValue(String key, String value) {
         mNoteDiffValues.put(key, value);
         mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
         mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
-    }
+    }//设置数据库表格的标签属性数据
 
     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;
-    }
+    }//得到文本数据的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() {
         return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
-    }
+    }//判断是否是本地修改
+
 
     public boolean syncNote(Context context, long noteId) {
         if (noteId <= 0) {
@@ -128,16 +132,16 @@ public class Note {
         }
 
         return true;
-    }
+    }//判断数据是否同步
 
-    private class NoteData {
+    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;
 
-        private ContentValues mTextDataValues;
+        private ContentValues mTextDataValues;//文本数据
 
         private long mCallDataId;
 
-        private ContentValues mCallDataValues;
+        private ContentValues mCallDataValues;//电话号码数据
 
         private static final String TAG = "NoteData";
 
@@ -184,7 +188,7 @@ public class Note {
              */
             if (noteId <= 0) {
                 throw new IllegalArgumentException("Wrong note id:" + noteId);
-            }
+            }//判断数据是否合法
 
             ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
             ContentProviderOperation.Builder builder = null;
@@ -209,7 +213,7 @@ public class Note {
                     operationList.add(builder.build());
                 }
                 mTextDataValues.clear();
-            }
+            }//把文本数据存入DataColumns
 
             if(mCallDataValues.size() > 0) {
                 mCallDataValues.put(DataColumns.NOTE_ID, noteId);
@@ -223,7 +227,7 @@ public class Note {
                         Log.e(TAG, "Insert new call data fail with noteId" + noteId);
                         mCallDataValues.clear();
                         return null;
-                    }
+                    }//存储过程中的异常处理
                 } else {
                     builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
                             Notes.CONTENT_DATA_URI, mCallDataId));
@@ -232,11 +236,16 @@ public class Note {
                 }
                 mCallDataValues.clear();
             }
-
+// 检查操作列表是否不为空
             if (operationList.size() > 0) {
                 try {
+                    // 使用内容解析器批量应用操作列表中的操作
+                    // Notes.AUTHORITY 是内容提供者的权威名称，operationList 是要执行的操作列表
                     ContentProviderResult[] results = context.getContentResolver().applyBatch(
                             Notes.AUTHORITY, operationList);
+                    // 检查返回的结果集
+                    // 如果结果为空、长度为0或第一个结果为空，则返回null
+                    // 否则，使用返回的noteId与Notes.CONTENT_NOTE_URI结合，构造并返回指向特定笔记的URI
                     return (results == null || results.length == 0 || results[0] == null) ? null
                             : ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
                 } catch (RemoteException e) {

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/model/WorkingNote.java

@@ -61,7 +61,7 @@ public class WorkingNote {
     private boolean mIsDeleted;
 
     private NoteSettingChangedListener mNoteSettingStatusListener;
-
+    // 声明 DATA_PROJECTION字符串数组
     public static final String[] DATA_PROJECTION = new String[] {
             DataColumns.ID,
             DataColumns.CONTENT,
@@ -71,7 +71,7 @@ public class WorkingNote {
             DataColumns.DATA3,
             DataColumns.DATA4,
     };
-
+    // 声明 NOTE_PROJECTION字符串数组
     public static final String[] NOTE_PROJECTION = new String[] {
             NoteColumns.PARENT_ID,
             NoteColumns.ALERTED_DATE,
@@ -113,7 +113,7 @@ public class WorkingNote {
         mMode = 0;
         mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
     }
-
+    // WorkingNote的构造函数
     // Existing note construct
     private WorkingNote(Context context, long noteId, long folderId) {
         mContext = context;
@@ -123,12 +123,14 @@ public class WorkingNote {
         mNote = new Note();
         loadNote();
     }
-
+    // 加载Note
+    // 通过数据库调用query函数找到第一个条目
     private void loadNote() {
         Cursor cursor = mContext.getContentResolver().query(
                 ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
                 null, null);
 
+        // 若存在，储存相应信息
         if (cursor != null) {
             if (cursor.moveToFirst()) {
                 mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
@@ -139,6 +141,8 @@ public class WorkingNote {
                 mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
             }
             cursor.close();
+
+            // 若不存在，报错
         } else {
             Log.e(TAG, "No note with id:" + mNoteId);
             throw new IllegalArgumentException("Unable to find note with id " + mNoteId);
@@ -146,6 +150,7 @@ public class WorkingNote {
         loadNoteData();
     }
 
+    // 加载NoteData
     private void loadNoteData() {
         Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
                 DataColumns.NOTE_ID + "=?", new String[] {
@@ -153,7 +158,8 @@ public class WorkingNote {
                 }, null);
 
         if (cursor != null) {
-            if (cursor.moveToFirst()) {
+            // 查到信息不为空
+            if (cursor.moveToFirst()) {// 查看第一项是否存在
                 do {
                     String type = cursor.getString(DATA_MIME_TYPE_COLUMN);
                     if (DataConstants.NOTE.equals(type)) {
@@ -173,7 +179,8 @@ public class WorkingNote {
             throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
         }
     }
-
+    // 创建空的Note
+    // 传参：context，文件夹id，widget，背景颜色
     public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
             int widgetType, int defaultBgColorId) {
         WorkingNote note = new WorkingNote(context, folderId);
@@ -186,7 +193,7 @@ public class WorkingNote {
     public static WorkingNote load(Context context, long id) {
         return new WorkingNote(context, id, 0);
     }
-
+    // 保存Note
     public synchronized boolean saveNote() {
         if (isWorthSaving()) {
             if (!existInDatabase()) {
@@ -211,12 +218,13 @@ public class WorkingNote {
             return false;
         }
     }
-
+    // 是否在数据库中存在
     public boolean existInDatabase() {
         return mNoteId > 0;
     }
-
+    // 是否值得保存
     private boolean isWorthSaving() {
+        // 被删除，或（不在数据库中 内容为空），或 本地已保存过
         if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
                 || (existInDatabase() && !mNote.isLocalModified())) {
             return false;
@@ -224,11 +232,12 @@ public class WorkingNote {
             return true;
         }
     }
-
+    // 设置mNoteSettingStatusListener
     public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
         mNoteSettingStatusListener = l;
     }
-
+    // 设置AlertDate
+    // 若 mAlertDate与data不同，则更改mAlertDate并设定NoteValue
     public void setAlertDate(long date, boolean set) {
         if (date != mAlertDate) {
             mAlertDate = date;
@@ -238,15 +247,18 @@ public class WorkingNote {
             mNoteSettingStatusListener.onClockAlertChanged(date, set);
         }
     }
-
+    // 设定删除标记
     public void markDeleted(boolean mark) {
+        // 设定标记
         mIsDeleted = mark;
         if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
                 && mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
                 mNoteSettingStatusListener.onWidgetChanged();
+                // 调用mNoteSettingStatusListener的 onWidgetChanged方法
         }
     }
 
+    // 设定背景颜色
     public void setBgColorId(int id) {
         if (id != mBgColorId) {
             mBgColorId = id;
@@ -256,7 +268,8 @@ public class WorkingNote {
             mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
         }
     }
-
+    // 设定检查列表模式
+    // 参数：mode
     public void setCheckListMode(int mode) {
         if (mMode != mode) {
             if (mNoteSettingStatusListener != null) {
@@ -266,28 +279,32 @@ public class WorkingNote {
             mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
         }
     }
-
+    // 设定WidgetType
+    // 参数：type
     public void setWidgetType(int type) {
         if (type != mWidgetType) {
             mWidgetType = type;
             mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
         }
     }
-
+    // 设定WidgetId
+    // 参数：id
     public void setWidgetId(int id) {
         if (id != mWidgetId) {
             mWidgetId = id;
             mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
         }
     }
-
+    // 设定WorkingTex
+    // 参数：更改的text
     public void setWorkingText(String text) {
         if (!TextUtils.equals(mContent, text)) {
             mContent = text;
             mNote.setTextData(DataColumns.CONTENT, mContent);
         }
     }
-
+    // 转变mNote的CallData及CallNote信息
+    // 参数：String phoneNumber, long callDate
     public void convertToCallNote(String phoneNumber, long callDate) {
         mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
         mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
@@ -341,7 +358,9 @@ public class WorkingNote {
     public int getWidgetType() {
         return mWidgetType;
     }
-
+    // 创建接口 NoteSettingChangedListener,便签更新监视
+    // 为NoteEditActivity提供接口
+    // 提供函数有
     public interface NoteSettingChangedListener {
         /**
          * Called when the background color of current note has just changed

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/tool/BackupUtils.java

@@ -35,40 +35,52 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.PrintStream;
 
-
+// 定义一个名为BackupUtils的工具类
 public class BackupUtils {
+    // 用于日志记录
     private static final String TAG = "BackupUtils";
-    // Singleton stuff
+
+    // 单例模式相关变量
+    // 用于保存BackupUtils类的唯一实例
     private static BackupUtils sInstance;
 
+    // 用于获取BackupUtils类的唯一实例
+    // 确保多线程环境下的线程安全
     public static synchronized BackupUtils getInstance(Context context) {
+        // 如果sInstance为空，则创建一个新的实例，并赋值给sInstance
         if (sInstance == null) {
             sInstance = new BackupUtils(context);
         }
+        // 返回BackupUtils类的唯一实例
         return sInstance;
     }
+    // 用于表示备份或恢复的状态
 
-    /**
-     * Following states are signs to represents backup or restore
-     * status
-     */
-    // Currently, the sdcard is not mounted
-    public static final int STATE_SD_CARD_UNMOUONTED           = 0;
-    // The backup file not exist
-    public static final int STATE_BACKUP_FILE_NOT_EXIST        = 1;
-    // The data is not well formated, may be changed by other programs
-    public static final int STATE_DATA_DESTROIED               = 2;
-    // Some run-time exception which causes restore or backup fails
-    public static final int STATE_SYSTEM_ERROR                 = 3;
-    // Backup or restore success
-    public static final int STATE_SUCCESS                      = 4;
+    public static final int STATE_SD_CARD_UNMOUONTED = 0;
+
+    public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
+
+    public static final int STATE_DATA_DESTROIED = 2;
+
+    public static final int STATE_SYSTEM_ERROR = 3;
+    // 备份或恢复成功
+    public static final int STATE_SUCCESS = 4;
 
+    // TextExport类型的私有变量mTextExport，用于导出文本
     private TextExport mTextExport;
 
+    // 防止外部直接创建BackupUtils类的实例
+    // 该构造方法接收一个Context类型的参数，用于初始化TextExport对象
     private BackupUtils(Context context) {
         mTextExport = new TextExport(context);
     }
 
+    /**
+     * Following states are signs to represents backup or restore
+     * status
+     */
+
+
     private static boolean externalStorageAvailable() {
         return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
     }
@@ -92,13 +104,13 @@ public class BackupUtils {
                 NoteColumns.SNIPPET,
                 NoteColumns.TYPE
         };
-
+        // 用于标识NOTE_PROJECTION数组中各列的索引
         private static final int NOTE_COLUMN_ID = 0;
 
         private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
 
         private static final int NOTE_COLUMN_SNIPPET = 2;
-
+        // 用于查询数据时的投影
         private static final String[] DATA_PROJECTION = {
                 DataColumns.CONTENT,
                 DataColumns.MIME_TYPE,
@@ -145,7 +157,7 @@ public class BackupUtils {
                     NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] {
                         folderId
                     }, null);
-
+// 如果notesCursor不为空，则遍历查询结果
             if (notesCursor != null) {
                 if (notesCursor.moveToFirst()) {
                     do {

src/AndroidCode/Notesmaster/app/src/main/java/net/micode/notes/tool/ResourceParser.java

@@ -55,7 +55,7 @@ public class ResourceParser {
             R.drawable.edit_title_green,
             R.drawable.edit_title_red
         };
-
+        //直接获取默认的背景颜色。
         public static int getNoteBgResource(int id) {
             return BG_EDIT_RESOURCES[id];
         }
@@ -148,7 +148,7 @@ public class ResourceParser {
             R.drawable.widget_4x_green,
             R.drawable.widget_4x_red
         };
-
+        //防止输入的id大于资源总量，若如此，则自动返回默认的设置结果
         public static int getWidget4xBgResource(int id) {
             return BG_4X_RESOURCES[id];
         }