|
|
package net.micode.notes.data;
|
|
|
|
|
|
import android.net.Uri;
|
|
|
public class Notes {
|
|
|
// 用于表示笔记应用中的各种类型、标识符以及Intent的额外数据
|
|
|
public static final String AUTHORITY = "micode_notes";
|
|
|
public static final String TAG = "Notes";
|
|
|
|
|
|
//对NoteColumns.TYPE的值进行设置时使用:
|
|
|
//即不同种类:笔记、文件夹和系统文件夹
|
|
|
public static final int TYPE_NOTE = 0;
|
|
|
public static final int TYPE_FOLDER = 1;
|
|
|
public static final int TYPE_SYSTEM = 2;
|
|
|
|
|
|
/**
|
|
|
* Following IDs are system folders' identifiers
|
|
|
* {@link Notes#ID_ROOT_FOLDER } is default folder
|
|
|
* {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
|
|
|
* {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
|
|
|
*/
|
|
|
//以下id是系统文件夹的标识符(即系统文件夹的分类)
|
|
|
//ID_ROOT_FOLDER:默认文件夹
|
|
|
//ID_TEMPARAY_FOLDER:不属于文件夹的笔记
|
|
|
//ID_CALL_RECORD_FOLDER:用于存储通话记录,以便返回
|
|
|
//ID_TRASH_FOLER:垃圾回收站
|
|
|
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;
|
|
|
|
|
|
|
|
|
// 额外的数据键,个人理解为就是定义一些布局的ID
|
|
|
// 这部分就是用于设置UI界面的一些布局或小组件的id,给它定义成常量了。
|
|
|
// (这样的封装性可能比较好?因为如果有部分要修改,则直接来这边修改即可,不用在activity部分一个一个修改。)
|
|
|
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";
|
|
|
|
|
|
public static final int TYPE_WIDGET_INVALIDE = -1;
|
|
|
public static final int TYPE_WIDGET_2X = 0;
|
|
|
public static final int TYPE_WIDGET_4X = 1;
|
|
|
|
|
|
// 数据常量:里面定义了两种类型:文本便签和通话记录
|
|
|
public static class DataConstants {
|
|
|
public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
|
|
|
public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
|
|
|
}
|
|
|
|
|
|
//下面这些有类似指针的效果? 其实就是定义一堆访问笔记和文件的uri
|
|
|
//GPT:Android开发中常见的用于定义内容提供者(Content Provider)URI
|
|
|
//内容提供者是一种Android组件,它允许应用程序共享和存储数据。这里定义了一个URI来查询数据
|
|
|
/**
|
|
|
* Uri to query all notes and folders
|
|
|
*/
|
|
|
public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
|
|
|
|
|
|
/**
|
|
|
* Uri to query data
|
|
|
*/
|
|
|
public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
|
|
|
|
|
|
public interface NoteColumns {
|
|
|
// 雨:这个接口定义了一系列静态的、最终的字符串常量,这些常量代表数据库表中的列名。
|
|
|
// 作用:用于后面创建数据库的表头
|
|
|
// 总的属性有:ID、父级ID、创建日期、修改日期、提醒日期、文件(标签)名(摘要?)、小部件ID、小部件类型、背景颜色ID、附件、文件中的标签数量、
|
|
|
// 文件(标签)类型、最后一个同步ID、本地修改标签、移动前的ID、谷歌任务ID、代码版本信息。
|
|
|
// GPT提示:在Android开发中,当使用SQLite数据库时,通常会为表中的每一列定义一个常量,以便在代码中引用。
|
|
|
// 这样做的好处是,如果以后需要更改列名,只需要在一个地方修改,而不需要在整个代码中搜索和替换。
|
|
|
|
|
|
/**
|
|
|
* The unique ID for a row
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String ID = "_id";
|
|
|
|
|
|
/**
|
|
|
* The parent's id for note or folder
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String PARENT_ID = "parent_id";
|
|
|
|
|
|
/**
|
|
|
* Created data for note or folder
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String CREATED_DATE = "created_date";
|
|
|
|
|
|
/**
|
|
|
* Latest modified date
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String MODIFIED_DATE = "modified_date";
|
|
|
|
|
|
|
|
|
/**
|
|
|
* Alert date
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String ALERTED_DATE = "alert_date";
|
|
|
|
|
|
/**
|
|
|
* Folder's name or text content of note
|
|
|
* <P> Type: TEXT </P>
|
|
|
*/
|
|
|
// 摘要?
|
|
|
public static final String SNIPPET = "snippet";
|
|
|
|
|
|
/**
|
|
|
* Note's widget id
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String WIDGET_ID = "widget_id";
|
|
|
|
|
|
/**
|
|
|
* Note's widget type
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String WIDGET_TYPE = "widget_type";
|
|
|
|
|
|
/**
|
|
|
* Note's background color's id
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String BG_COLOR_ID = "bg_color_id";
|
|
|
|
|
|
/**
|
|
|
* For text note, it doesn't has attachment, for multi-media
|
|
|
* note, it has at least one attachment
|
|
|
* <P> Type: INTEGER </P>
|
|
|
*/
|
|
|
public static final String HAS_ATTACHMENT = "has_attachment";
|
|
|
|
|
|
/**
|
|
|
* Folder's count of notes
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String NOTES_COUNT = "notes_count";
|
|
|
|
|
|
/**
|
|
|
* The file type: folder or note
|
|
|
* <P> Type: INTEGER </P>
|
|
|
*/
|
|
|
public static final String TYPE = "type";
|
|
|
|
|
|
/**
|
|
|
* The last sync id
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
//雨:在数据同步过程中,这个ID可能用来跟踪和识别每次同步操作的唯一性,确保数据的一致性。
|
|
|
public static final String SYNC_ID = "sync_id";
|
|
|
|
|
|
/**
|
|
|
* Sign to indicate local modified or not
|
|
|
* <P> Type: INTEGER </P>
|
|
|
*/
|
|
|
public static final String LOCAL_MODIFIED = "local_modified";
|
|
|
|
|
|
/**
|
|
|
* Original parent id before moving into temporary folder
|
|
|
* <P> Type : INTEGER </P>
|
|
|
*/
|
|
|
public static final String ORIGIN_PARENT_ID = "origin_parent_id";
|
|
|
|
|
|
/**
|
|
|
* The gtask id
|
|
|
* <P> Type : TEXT </P>
|
|
|
*/
|
|
|
public static final String GTASK_ID = "gtask_id";
|
|
|
|
|
|
/**
|
|
|
* The version code
|
|
|
* <P> Type : INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String VERSION = "version";
|
|
|
}
|
|
|
|
|
|
public interface DataColumns {
|
|
|
// DataColumns的接口,这个接口包含了一系列静态常量,这些常量代表了数据库表中用于存储数据的列名。
|
|
|
// 每个常量都有相应的注释,说明该列的作用和数据类型。
|
|
|
|
|
|
/**
|
|
|
* The unique ID for a row
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String ID = "_id";
|
|
|
|
|
|
/**
|
|
|
* The MIME type of the item represented by this row.
|
|
|
* <P> Type: Text </P>
|
|
|
*/
|
|
|
//MIME类型是一种标准,用于标识文档、文件或字节流的性质和格式。在数据库中,这个字段可以用来识别不同类型的数据,例如文本、图片、音频或视频等。
|
|
|
public static final String MIME_TYPE = "mime_type";
|
|
|
|
|
|
/**
|
|
|
* The reference id to note that this data belongs to
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
//归属的Note的ID
|
|
|
public static final String NOTE_ID = "note_id";
|
|
|
|
|
|
/**
|
|
|
* Created data for note or folder
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
//创建日期
|
|
|
public static final String CREATED_DATE = "created_date";
|
|
|
|
|
|
/**
|
|
|
* Latest modified date
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
//最近修改日期
|
|
|
public static final String MODIFIED_DATE = "modified_date";
|
|
|
|
|
|
/**
|
|
|
* Data's content
|
|
|
* <P> Type: TEXT </P>
|
|
|
*/
|
|
|
//数据内容
|
|
|
public static final String CONTENT = "content";
|
|
|
|
|
|
|
|
|
// 以下5个是通用数据列,它们的具体意义取决于MIME类型(由MIME_TYPE字段指定)。
|
|
|
// 不同的MIME类型可能需要存储不同类型的数据,这五个字段提供了灵活性,允许根据MIME类型来存储相应的数据。
|
|
|
// 读后面的代码感觉这部分是在表示内容的不同状态?
|
|
|
/**
|
|
|
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
|
|
|
* integer data type
|
|
|
* <P> Type: INTEGER </P>
|
|
|
*/
|
|
|
public static final String DATA1 = "data1";
|
|
|
|
|
|
/**
|
|
|
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
|
|
|
* integer data type
|
|
|
* <P> Type: INTEGER </P>
|
|
|
*/
|
|
|
public static final String DATA2 = "data2";
|
|
|
|
|
|
/**
|
|
|
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
|
|
|
* TEXT data type
|
|
|
* <P> Type: TEXT </P>
|
|
|
*/
|
|
|
public static final String DATA3 = "data3";
|
|
|
|
|
|
/**
|
|
|
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
|
|
|
* TEXT data type
|
|
|
* <P> Type: TEXT </P>
|
|
|
*/
|
|
|
public static final String DATA4 = "data4";
|
|
|
|
|
|
/**
|
|
|
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
|
|
|
* TEXT data type
|
|
|
* <P> Type: TEXT </P>
|
|
|
*/
|
|
|
public static final String DATA5 = "data5";
|
|
|
}
|
|
|
|
|
|
//以下是文本便签的定义
|
|
|
public static final class TextNote implements DataColumns {
|
|
|
/**
|
|
|
* Mode to indicate the text in check list mode or not
|
|
|
* <P> Type: Integer 1:check list mode 0: normal mode </P>
|
|
|
*/
|
|
|
public static final String MODE = DATA1; //模式?这个被存在DATA1列中
|
|
|
|
|
|
public static final int MODE_CHECK_LIST = 1; //所处检查列表模式?
|
|
|
|
|
|
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note"; // 定义了MIME类型,用于标识文本标签的目录
|
|
|
|
|
|
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";// 定义了MIME类型,用于标识文本标签的单个项
|
|
|
|
|
|
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");//文本标签内容提供者(Content Provider)的URI,用于访问文本标签数据
|
|
|
}
|
|
|
|
|
|
// 通话记录的定义?
|
|
|
public static final class CallNote implements DataColumns {
|
|
|
/**
|
|
|
* Call date for this record
|
|
|
* <P> Type: INTEGER (long) </P>
|
|
|
*/
|
|
|
public static final String CALL_DATE = DATA1; //一个字符串常量,表示通话记录的日期
|
|
|
|
|
|
/**
|
|
|
* Phone number for this record
|
|
|
* <P> Type: TEXT </P>
|
|
|
*/
|
|
|
public static final String PHONE_NUMBER = DATA3; //意味着在数据库表中,这个电话号码信息将被存储在DATA3列中
|
|
|
|
|
|
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";// 同样定义了MIME类型,是用于标识通话记录的目录。
|
|
|
|
|
|
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";// 同样定义了MIME类型,是用于标识通话记录的单个项。
|
|
|
|
|
|
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");//定义了通话记录内容提供者的URI,用于访问通话记录数据。
|
|
|
}
|
|
|
} |