From 2bc52ecdd345949991191dd1037c26fd9dd36d73 Mon Sep 17 00:00:00 2001
From: zkx <zkx@nudt.com>
Date: Mon, 25 Dec 2023 20:47:53 +0800
Subject: [PATCH] learn: cursor

---
 src/main/java/net/micode/notes/data/Notes.java |  2 +-
 .../java/net/micode/notes/ui/NoteItemData.java | 18 +++++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/main/java/net/micode/notes/data/Notes.java b/src/main/java/net/micode/notes/data/Notes.java
index be1358b..ea80c27 100644
--- a/src/main/java/net/micode/notes/data/Notes.java
+++ b/src/main/java/net/micode/notes/data/Notes.java
@@ -33,7 +33,7 @@ public class Notes {
     public static final int ID_ROOT_FOLDER = 0;
     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;
+    public static final int ID_TRASH_FOLER = -3; // TODO: 2023/12/25 有trash文件夹 
 
     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";
diff --git a/src/main/java/net/micode/notes/ui/NoteItemData.java b/src/main/java/net/micode/notes/ui/NoteItemData.java
index 9ef849a..1e96e08 100644
--- a/src/main/java/net/micode/notes/ui/NoteItemData.java
+++ b/src/main/java/net/micode/notes/ui/NoteItemData.java
@@ -55,6 +55,9 @@ public class NoteItemData {
     private static final int WIDGET_ID_COLUMN             = 10;
     private static final int WIDGET_TYPE_COLUMN           = 11;
 
+     /** 以下这些数据，对照着NotesDatabaseHelper.java看
+      * 都是数据行里设置好的属性
+      * @zhoukexing 2023/12/25 20:22 */
     private long mId;
     private long mAlertDate;
     private int mBgColorId;
@@ -76,8 +79,16 @@ public class NoteItemData {
     private boolean mIsOneNoteFollowingFolder;
     private boolean mIsMultiNotesFollowingFolder;
 
-    public NoteItemData(Context context, Cursor cursor) {
-        mId = cursor.getLong(ID_COLUMN);
+    /**
+     * @method:  NoteItemData
+     * @description: 描述一下方法的作用
+     * @date: 2023/12/25 19:58
+     * @author: zhoukexing
+     * @param: [context, cursor]
+     * @return:
+     */
+    public NoteItemData(Context context, Cursor cursor) { // 把cursor理解为这样一个指针，指向一个表格 @zhoukexing 2023/12/25 20:12
+        mId = cursor.getLong(ID_COLUMN); // 可以根据传入的列号获取到表格里对应列的值 @zhoukexing 2023/12/25 20:12
         mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
         mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
         mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN);
@@ -93,8 +104,9 @@ public class NoteItemData {
         mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
 
         mPhoneNumber = "";
-        if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
+        if (mParentId == Notes.ID_CALL_RECORD_FOLDER) { //Q: 文件夹为什么有电话记录之说？怎么是通过一个便签的父文件夹来判断便签内有无电话号码？@zkx 2023/12/25
             mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
+            // 根据电话号码锁定联系人名称，若不在联系人里，直接使用电话号码 @zhoukexing 2023/12/25 20:17
             if (!TextUtils.isEmpty(mPhoneNumber)) {
                 mName = Contact.getContact(context, mPhoneNumber);
                 if (mName == null) {