From 975bbb4c4905f620250ff2388457b337125f0efc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=A3=A0=E8=92=BF?= <3324875898@qq.com> Date: Sun, 29 Dec 2024 11:36:51 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BB=A3=E7=A0=81=E6=B3=A8=E9=87=8A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- data.java | 1044 ----------------------------------------------------- tool.java | 850 ------------------------------------------- 2 files changed, 1894 deletions(-) delete mode 100644 data.java delete mode 100644 tool.java diff --git a/data.java b/data.java deleted file mode 100644 index 8c25e49..0000000 --- a/data.java +++ /dev/null @@ -1,1044 +0,0 @@ -package net.micode.notes.data; - -import android.content.Context; - -import android.database.Cursor; -import android.provider.ContactsContract.CommonDataKinds.Phone; -import android.provider.ContactsContract.Data; -import android.telephony.PhoneNumberUtils; -import android.util.Log; - -import java.util.HashMap; -//change -public class Contact { //联系人 - private static HashMap sContactCache; - private static final String TAG = "Contact"; - - // 定义字符串CALLER_ID_SELECTION - 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 = '+')"; - - // 获取联系人 - public static String getContact(Context context, String phoneNumber) { - if(sContactCache == null) { - sContactCache = new HashMap(); - } - - // 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 { - // 找到相关信息 - String name = cursor.getString(0); - sContactCache.put(phoneNumber, name); - return name; - // 异常 - } catch (IndexOutOfBoundsException e) { - Log.e(TAG, " Cursor get string error " + e.toString()); - return null; - } finally { - cursor.close(); - } - // 未找到相关信息 - } else { - Log.d(TAG, "No contact matched with number:" + phoneNumber); - return null; - } - } -} -Notes.java -package net.micode.notes.data; - -import android.content.ContentUris; -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; - - /** - * 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 - */ - 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 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; - - public static class DataConstants { - public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; - public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; - } - - /** - * Uri to query all notes and folders - */ - public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + - -AUTHORITY + "/note");//定义查询便签和文件夹的指针。 - -// public static final Uri my_URI = ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI , 10); - - /** - * Uri to query data - */ - public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + - -AUTHORITY + "/data");//定义查找数据的指针。 - - // 定义NoteColumns的常量,用于后面创建数据库的表头 - public interface NoteColumns { - /** - * The unique ID for a row - *

Type: INTEGER (long)

- */ - public static final String ID = "_id"; - - /** - * The parent's id for note or folder - *

Type: INTEGER (long)

- */ - public static final String PARENT_ID = "parent_id";//为什么会有parent_id - - /** - * Created data for note or folder - *

Type: INTEGER (long)

- */ - public static final String CREATED_DATE = "created_date"; - - /** - * Latest modified date - *

Type: INTEGER (long)

- */ - public static final String MODIFIED_DATE = "modified_date"; - - - /** - * Alert date - *

Type: INTEGER (long)

- */ - public static final String ALERTED_DATE = "alert_date"; - - /** - * Folder's name or text content of note - *

Type: TEXT

- */ - public static final String SNIPPET = "snippet"; - - /** - * Note's widget id - *

Type: INTEGER (long)

- */ - public static final String WIDGET_ID = "widget_id"; - - /** - * Note's widget type - *

Type: INTEGER (long)

- */ - public static final String WIDGET_TYPE = "widget_type"; - - /** - * Note's background color's id - *

Type: INTEGER (long)

- */ - 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 - *

Type: INTEGER

- */ - public static final String HAS_ATTACHMENT = "has_attachment"; - - /** - * Folder's count of notes - *

Type: INTEGER (long)

- */ - public static final String NOTES_COUNT = "notes_count"; - - /** - * The file type: folder or note - *

Type: INTEGER

- */ - public static final String TYPE = "type"; - - /** - * The last sync id - *

Type: INTEGER (long)

- */ - public static final String SYNC_ID = "sync_id";//同步 - - /** - * Sign to indicate local modified or not - *

Type: INTEGER

- */ - public static final String LOCAL_MODIFIED = "local_modified"; - - /** - * Original parent id before moving into temporary folder - *

Type : INTEGER

- */ - public static final String ORIGIN_PARENT_ID = "origin_parent_id"; - - /** - * The gtask id - *

Type : TEXT

- */ - public static final String GTASK_ID = "gtask_id"; - - /** - * The version code - *

Type : INTEGER (long)

- */ - public static final String VERSION = "version"; - }//这些常量主要是定义便签的属性的。 - - // 定义DataColumns的常量,用于后面创建数据库的表头 - public interface DataColumns { - /** - * The unique ID for a row - *

Type: INTEGER (long)

- */ - public static final String ID = "_id"; - - /** - * The MIME type of the item represented by this row. - *

Type: Text

- */ - public static final String MIME_TYPE = "mime_type"; - - /** - * The reference id to note that this data belongs to - *

Type: INTEGER (long)

- */ - public static final String NOTE_ID = "note_id"; - - /** - * Created data for note or folder - *

Type: INTEGER (long)

- */ - public static final String CREATED_DATE = "created_date"; - - /** - * Latest modified date - *

Type: INTEGER (long)

- */ - public static final String MODIFIED_DATE = "modified_date"; - - /** - * Data's content - *

Type: TEXT

- */ - public static final String CONTENT = "content"; - - - /** - * Generic data column, the meaning is {@link #MIMETYPE} specific, -used for - * integer data type - *

Type: INTEGER

- */ - public static final String DATA1 = "data1"; - - /** - * Generic data column, the meaning is {@link #MIMETYPE} specific, -used for - * integer data type - *

Type: INTEGER

- */ - public static final String DATA2 = "data2"; - - /** - * Generic data column, the meaning is {@link #MIMETYPE} specific, -used for - * TEXT data type - *

Type: TEXT

- */ - public static final String DATA3 = "data3"; - - /** - * Generic data column, the meaning is {@link #MIMETYPE} specific, -used for - * TEXT data type - *

Type: TEXT

- */ - public static final String DATA4 = "data4"; - - /** - * Generic data column, the meaning is {@link #MIMETYPE} specific, -used for - * TEXT data type - *

Type: TEXT

- */ - public static final String DATA5 = "data5"; - }//主要是定义存储便签内容数据的 - public static final class TextNote implements DataColumns { - /** - * Mode to indicate the text in check list mode or not - *

Type: Integer 1:check list mode 0: normal mode

- */ - public static final String MODE = DATA1; - - public static final int MODE_CHECK_LIST = 1; - - public static final String CONTENT_TYPE = - -"vnd.android.cursor.dir/text_note"; - - public static final String CONTENT_ITEM_TYPE = - -"vnd.android.cursor.item/text_note"; - - public static final Uri CONTENT_URI = Uri.parse("content://" + - -AUTHORITY + "/text_note"); - }//文本内容的数据结构 - - public static final class CallNote implements DataColumns { - /** - * Call date for this record - *

Type: INTEGER (long)

- */ - public static final String CALL_DATE = DATA1; - - /** - * Phone number for this record - *

Type: TEXT

- */ - public static final String PHONE_NUMBER = DATA3; - - public static final String CONTENT_TYPE = - -"vnd.android.cursor.dir/call_note"; - - public static final String CONTENT_ITEM_TYPE = - -"vnd.android.cursor.item/call_note"; - - public static final Uri CONTENT_URI = Uri.parse("content://" + - -AUTHORITY + "/call_note"); - }//电话内容的数据结构 -} -NotesDatabaseHelper.java -package net.micode.notes.data; - -import android.content.ContentValues;//就是用于保存一些数据（string boolean byte double float int long short ...）信息，这些信息可以被数据库操作时使用。 -import android.content.Context;//加载和访问资源。（android中主要是这两个功能，但是这里具体不清楚） -import android.database.sqlite.SQLiteDatabase;//主要提供了对应于添加、删除、更新、查询的操作方法： insert()、delete()、update()和query()。配合content.values -import android.database.sqlite.SQLiteOpenHelper;//用来管理数据的创建和版本更新 -import android.util.Log; - -import net.micode.notes.data.Notes.DataColumns; -import net.micode.notes.data.Notes.DataConstants; -import net.micode.notes.data.Notes.NoteColumns; -//数据库操作，用SQLOpenhelper,对一些note和文件进行数据库的操作，比如删除文件后，将文件里的note也相应删除 - -public class NotesDatabaseHelper extends SQLiteOpenHelper { - private static final String DB_NAME = "note.db"; - - 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 static final String NOTE = "note"; - - public static final String DATA = "data"; - } - - private static final String TAG = "NotesDatabaseHelper"; - - 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。 - - 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 - - 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 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - /** - * 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。 - - 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); - reCreateNoteTableTriggers(db); - createSystemFolder(db); - Log.d(TAG, "note table has been created"); - }//创建表格（用来存储标签属性） - - private void reCreateNoteTableTriggers(SQLiteDatabase db) { - db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update"); - db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update"); - db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete"); - db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete"); - db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert"); - db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete"); - db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash"); - - db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); - db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); - db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER); - db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER); - db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER); - db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER); - db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER); - }//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(); - - /** - * call record foler for call notes - */ - values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER); - values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); - db.insert(TABLE.NOTE, null, values); - - /** - * root folder which is default folder - */ - values.clear(); - values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER); - values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); - db.insert(TABLE.NOTE, null, values); - - /** - * temporary folder which is used for moving note - */ - values.clear(); - values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER); - values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); - db.insert(TABLE.NOTE, null, values); - - /** - * create trash folder - */ - values.clear(); - values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); - values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); - db.insert(TABLE.NOTE, null, values); - }//创建几个系统文件夹 - - public void createDataTable(SQLiteDatabase db) { - db.execSQL(CREATE_DATA_TABLE_SQL); - reCreateDataTableTriggers(db); - db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); - Log.d(TAG, "data table has been created"); - }//创建表格（用来存储标签内容） - - private void reCreateDataTableTriggers(SQLiteDatabase db) { - db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert"); - db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update"); - db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete"); - - 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) { - mInstance = new NotesDatabaseHelper(context); - } - return mInstance; - }//上网查是为解决同一时刻只能有一个线程执行. - //在写程序库代码时，有时有一个类需要被所有的其它类使用， - //但又要求这个类只能被实例化一次，是个服务类，定义一次，其它类使用同一个这个类的实例 - - @Override - public void onCreate(SQLiteDatabase db) { - createNoteTable(db); - createDataTable(db); - }//实现两个表格（上面创建的两个表格） - - @Override - public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { - boolean reCreateTriggers = false; - boolean skipV2 = false; - - if (oldVersion == 1) { - upgradeToV2(db); - skipV2 = true; // this upgrade including the upgrade from v2 to v3 - oldVersion++; - } - - if (oldVersion == 2 && !skipV2) { - upgradeToV3(db); - reCreateTriggers = true; - oldVersion++; - } - - if (oldVersion == 3) { - upgradeToV4(db); - oldVersion++; - } - - if (reCreateTriggers) { - reCreateNoteTableTriggers(db); - reCreateDataTableTriggers(db); - } - - if (oldVersion != newVersion) { - 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） - - private void upgradeToV2(SQLiteDatabase db) { - db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE); - db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA); - createNoteTable(db); - createDataTable(db); - }//更新到V2版本 - - private void upgradeToV3(SQLiteDatabase db) { - // drop unused triggers - db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert"); - db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete"); - db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update"); - // add a column for gtask id - db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID - + " TEXT NOT NULL DEFAULT ''"); - // add a trash system folder - ContentValues values = new ContentValues(); - values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); - values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); - db.insert(TABLE.NOTE, null, values); - }//更新到V3版本 - - 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 -} -NotesProvider.java -package net.micode.notes.data; - -import android.app.SearchManager; -import android.content.ContentProvider; -import android.content.ContentUris; -import android.content.ContentValues; -import android.content.Intent; -import android.content.UriMatcher; -import android.database.Cursor; -import android.database.sqlite.SQLiteDatabase; -import android.net.Uri; -import android.text.TextUtils; -import android.util.Log; - -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 -//insert：插入 -//update：更新 -//delete：删除 -//getType：得到数据类型 -public class NotesProvider extends ContentProvider { - // UriMatcher用于匹配Uri - private static final UriMatcher mMatcher; - - private NotesDatabaseHelper mHelper; - - private static final String TAG = "NotesProvider"; - - private static final int URI_NOTE = 1; - private static final int URI_NOTE_ITEM = 2; - private static final int URI_DATA = 3; - private static final int URI_DATA_ITEM = 4; - - private static final int URI_SEARCH = 5; - private static final int URI_SEARCH_SUGGEST = 6; - - static { - // 创建UriMatcher时，调用UriMatcher(UriMatcher.NO_MATCH)表示不匹配任何路径的返回码 - mMatcher = new UriMatcher(UriMatcher.NO_MATCH); - // 把需要匹配Uri路径全部给注册上 - mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE); - mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM); - mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA); - mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM); - mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH); - mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST); - mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST); - } - - /** - * 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; - // 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; - - @Override - // Context只有在onCreate()中才被初始化 - // 对mHelper进行实例化 - public boolean onCreate() { - mHelper = NotesDatabaseHelper.getInstance(getContext()); - return true; - } - - @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) { - 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: - c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null, - sortOrder); - break; - case URI_NOTE_ITEM: - id = uri.getPathSegments().get(1); - c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id - + parseSelection(selection), selectionArgs, null, null, sortOrder); - break; - case URI_DATA: - c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null, - sortOrder); - break; - case URI_DATA_ITEM: - id = uri.getPathSegments().get(1); - c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id - + parseSelection(selection), selectionArgs, null, null, sortOrder); - break; - case URI_SEARCH: - case URI_SEARCH_SUGGEST: - if (sortOrder != null || projection != null) { - // 不合法的参数异常 - throw new IllegalArgumentException( - "do not specify sortOrder, selection, selectionArgs, or projection" + "with this query"); - } - - 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 { - searchString = uri.getQueryParameter("pattern"); - } - - if (TextUtils.isEmpty(searchString)) { - return null; - } - - try { - searchString = String.format("%%%s%%", searchString); - c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY, - new String[] { searchString }); - } catch (IllegalStateException ex) { - Log.e(TAG, "got exception: " + ex.toString()); - } - break; - default: - // 抛出异常 - throw new IllegalArgumentException("Unknown URI " + uri); - } - if (c != null) { - c.setNotificationUri(getContext().getContentResolver(), uri); - } - return c; - } - - @Override - // 插入一个uri - public Uri insert(Uri uri, ContentValues values) { - // 获得可写的数据库 - SQLiteDatabase db = mHelper.getWritableDatabase(); - long dataId = 0, noteId = 0, insertedId = 0; - switch (mMatcher.match(uri)) { - // 新增一个条目 - case URI_NOTE: - insertedId = noteId = db.insert(TABLE.NOTE, null, values); - break; - // 如果存在，查找NOTE_ID - case URI_DATA: - if (values.containsKey(DataColumns.NOTE_ID)) { - noteId = values.getAsLong(DataColumns.NOTE_ID); - } else { - Log.d(TAG, "Wrong data format without note id:" + values.toString()); - } - insertedId = dataId = db.insert(TABLE.DATA, null, values); - break; - default: - 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); - } - - // Notify the data uri - if (dataId > 0) { - getContext().getContentResolver().notifyChange( - ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null); - } - - // 返回插入的uri的路径 - return ContentUris.withAppendedId(uri, insertedId); - } - - @Override - // 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)) { - case URI_NOTE: - selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 "; - count = db.delete(TABLE.NOTE, selection, selectionArgs); - break; - case URI_NOTE_ITEM: - id = uri.getPathSegments().get(1); - /** - * ID that smaller than 0 is system folder which is not allowed to - * trash - */ - long noteId = Long.valueOf(id); - if (noteId <= 0) { - break; - } - count = db.delete(TABLE.NOTE, - NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs); - break; - case URI_DATA: - count = db.delete(TABLE.DATA, selection, selectionArgs); - deleteData = true; - break; - case URI_DATA_ITEM: - id = uri.getPathSegments().get(1); - count = db.delete(TABLE.DATA, - DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs); - deleteData = true; - break; - default: - throw new IllegalArgumentException("Unknown URI " + uri); - } - if (count > 0) { - if (deleteData) { - getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); - } - getContext().getContentResolver().notifyChange(uri, null); - } - return count; - } - - @Override - // 更新一个uri - public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { - int count = 0; - String id = null; - SQLiteDatabase db = mHelper.getWritableDatabase(); - boolean updateData = false; - switch (mMatcher.match(uri)) { - case URI_NOTE: - increaseNoteVersion(-1, selection, selectionArgs); - count = db.update(TABLE.NOTE, values, selection, selectionArgs); - break; - case URI_NOTE_ITEM: - id = uri.getPathSegments().get(1); - increaseNoteVersion(Long.valueOf(id), selection, selectionArgs); - count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id - + parseSelection(selection), selectionArgs); - break; - case URI_DATA: - count = db.update(TABLE.DATA, values, selection, selectionArgs); - updateData = true; - break; - case URI_DATA_ITEM: - id = uri.getPathSegments().get(1); - count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id - + parseSelection(selection), selectionArgs); - updateData = true; - break; - default: - throw new IllegalArgumentException("Unknown URI " + uri); - } - - if (count > 0) { - if (updateData) { - getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); - } - getContext().getContentResolver().notifyChange(uri, null); - } - return count; - } - - // 将字符串解析成规定格式 - private String parseSelection(String selection) { - return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); - } - - //增加一个noteVersion - private void increaseNoteVersion(long id, String selection, String[] selectionArgs) { - StringBuilder sql = new StringBuilder(120); - sql.append("UPDATE "); - sql.append(TABLE.NOTE); - sql.append(" SET "); - sql.append(NoteColumns.VERSION); - sql.append("=" + NoteColumns.VERSION + "+1 "); - - if (id > 0 || !TextUtils.isEmpty(selection)) { - sql.append(" WHERE "); - } - if (id > 0) { - sql.append(NoteColumns.ID + "=" + String.valueOf(id)); - } - if (!TextUtils.isEmpty(selection)) { - String selectString = id > 0 ? parseSelection(selection) : selection; - for (String args : selectionArgs) { - selectString = selectString.replaceFirst("\\?", args); - } - sql.append(selectString); - } - - // execSQL()方法可以执行insert、delete、update和CREATE TABLE之类有更改行为的SQL语句 - mHelper.getWritableDatabase().execSQL(sql.toString()); - } - - @Override - public String getType(Uri uri) { - // TODO Auto-generated method stub - return null; - } - -} \ No newline at end of file diff --git a/tool.java b/tool.java deleted file mode 100644 index f96ea4c..0000000 --- a/tool.java +++ /dev/null @@ -1,850 +0,0 @@ -package net.micode.notes.tool; - -public class BackupUtils { - private static final String TAG = "BackupUtils"; - // Singleton stuff - private static BackupUtils sInstance; //类里面为什么可以定义自身类的对象？ - - public static synchronized BackupUtils getInstance(Context context) { - //ynchronized 关键字，代表这个方法加锁,相当于不管哪一个线程（例如线程A） - //运行到这个方法时,都要检查有没有其它线程B（或者C、 D等）正在用这个方法(或者该类的其他同步方法)，有的话要等正在使用synchronized方法的线程B（或者C 、D）运行完这个方法后再运行此线程A,没有的话,锁定调用者,然后直接运行。 - //它包括两种用法：synchronized 方法和 synchronized 块。 - if (sInstance == null) { - //如果当前备份不存在，则新声明一个 - sInstance = new BackupUtils(context); - } - return sInstance; - } - - /** - * Following states are signs to represents backup or restore - * status - */ - // Currently, the sdcard is not mounted SD卡没有被装入手机 - public static final int STATE_SD_CARD_UNMOUONTED = 0; - // The backup file not exist 备份文件夹不存在 - public static final int STATE_BACKUP_FILE_NOT_EXIST = 1; - // The data is not well formated, may be changed by other programs 数据已被破坏，可能被修改 - public static final int STATE_DATA_DESTROIED = 2; - // Some run-time exception which causes restore or backup fails 超时异常 - public static final int STATE_SYSTEM_ERROR = 3; - // Backup or restore success 成功存储 - public static final int STATE_SUCCESS = 4; - - private TextExport mTextExport; - - private BackupUtils(Context context) { //初始化函数 - mTextExport = new TextExport(context); - } - - private static boolean externalStorageAvailable() { //外部存储功能是否可用 - return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()); - } - - public int exportToText() { - return mTextExport.exportToText(); - } - - public String getExportedTextFileName() { - return mTextExport.mFileName; - } - - public String getExportedTextFileDir() { - return mTextExport.mFileDirectory; - } - - private static class TextExport { - private static final String[] NOTE_PROJECTION = { - NoteColumns.ID, - NoteColumns.MODIFIED_DATE, - NoteColumns.SNIPPET, - NoteColumns.TYPE - }; - - 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; - - private static final String[] DATA_PROJECTION = { - DataColumns.CONTENT, - DataColumns.MIME_TYPE, - DataColumns.DATA1, - DataColumns.DATA2, - DataColumns.DATA3, - DataColumns.DATA4, - }; - - private static final int DATA_COLUMN_CONTENT = 0; - - private static final int DATA_COLUMN_MIME_TYPE = 1; - - private static final int DATA_COLUMN_CALL_DATE = 2; - - private static final int DATA_COLUMN_PHONE_NUMBER = 4; - - private final String [] TEXT_FORMAT; - private static final int FORMAT_FOLDER_NAME = 0; - private static final int FORMAT_NOTE_DATE = 1; - private static final int FORMAT_NOTE_CONTENT = 2; - - private Context mContext; - private String mFileName; - private String mFileDirectory; - - public TextExport(Context context) { - TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note); - mContext = context; - mFileName = ""; //为什么为空? - mFileDirectory = ""; - } - - private String getFormat(int id) { //获取文本的组成部分 - return TEXT_FORMAT[id]; - } - - /** - * Export the folder identified by folder id to text - */ - private void exportFolderToText(String folderId, PrintStream ps) { - // Query notes belong to this folder 通过查询parent id是文件夹id的note来选出制定ID文件夹下的Note - Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI, - NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] { - folderId - }, null); - - if (notesCursor != null) { - if (notesCursor.moveToFirst()) { - do { - // Print note's last modified date ps里面保存有这份note的日期 - ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format( - mContext.getString(R.string.format_datetime_mdhm), - notesCursor.getLong(NOTE_COLUMN_MODIFIED_DATE)))); - // Query data belong to this note - String noteId = notesCursor.getString(NOTE_COLUMN_ID); - exportNoteToText(noteId, ps); //将文件导出到text - } while (notesCursor.moveToNext()); - } - notesCursor.close(); - } - } - - /** - * Export note identified by id to a print stream - */ - private void exportNoteToText(String noteId, PrintStream ps) { - Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, - DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] { - noteId - }, null); - - if (dataCursor != null) { //利用光标来扫描内容，区别为callnote和note两种，靠ps.printline输出 - if (dataCursor.moveToFirst()) { - do { - String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE); - if (DataConstants.CALL_NOTE.equals(mimeType)) { - // Print phone number - String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER); - long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE); - String location = dataCursor.getString(DATA_COLUMN_CONTENT); - - if (!TextUtils.isEmpty(phoneNumber)) { //判断是否为空字符 - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), - phoneNumber)); - } - // Print call date - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat - .format(mContext.getString(R.string.format_datetime_mdhm), - callDate))); - // Print call attachment location - if (!TextUtils.isEmpty(location)) { - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), - location)); - } - } else if (DataConstants.NOTE.equals(mimeType)) { - String content = dataCursor.getString(DATA_COLUMN_CONTENT); - if (!TextUtils.isEmpty(content)) { - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), - content)); - } - } - } while (dataCursor.moveToNext()); - } - dataCursor.close(); - } - // print a line separator between note - try { - ps.write(new byte[] { - Character.LINE_SEPARATOR, Character.LETTER_NUMBER - }); - } catch (IOException e) { - Log.e(TAG, e.toString()); - } - } - - /** - * Note will be exported as text which is user readable - */ - public int exportToText() { //总函数，调用上面的exportFolder和exportNote - if (!externalStorageAvailable()) { - Log.d(TAG, "Media was not mounted"); - return STATE_SD_CARD_UNMOUONTED; - } - - PrintStream ps = getExportToTextPrintStream(); - if (ps == null) { - Log.e(TAG, "get print stream error"); - return STATE_SYSTEM_ERROR; - } - // First export folder and its notes 导出文件夹，就是导出里面包含的便签 - Cursor folderCursor = mContext.getContentResolver().query( - Notes.CONTENT_NOTE_URI, - NOTE_PROJECTION, - "(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND " - + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR " - + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null); - - if (folderCursor != null) { - if (folderCursor.moveToFirst()) { - do { - // Print folder's name - String folderName = ""; - if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) { - folderName = mContext.getString(R.string.call_record_folder_name); - } else { - folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET); - } - if (!TextUtils.isEmpty(folderName)) { - ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName)); - } - String folderId = folderCursor.getString(NOTE_COLUMN_ID); - exportFolderToText(folderId, ps); - } while (folderCursor.moveToNext()); - } - folderCursor.close(); - } - - // Export notes in root's folder 将根目录里的便签导出（由于不属于任何文件夹，因此无法通过文件夹导出来实现这一部分便签的导出） - Cursor noteCursor = mContext.getContentResolver().query( - Notes.CONTENT_NOTE_URI, - NOTE_PROJECTION, - NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID - + "=0", null, null); - - if (noteCursor != null) { - if (noteCursor.moveToFirst()) { - do { - ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format( - mContext.getString(R.string.format_datetime_mdhm), - noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE)))); - // Query data belong to this note - String noteId = noteCursor.getString(NOTE_COLUMN_ID); - exportNoteToText(noteId, ps); - } while (noteCursor.moveToNext()); - } - noteCursor.close(); - } - ps.close(); - - return STATE_SUCCESS; - } - - /** - * Get a print stream pointed to the file {@generateExportedTextFile} - */ - private PrintStream getExportToTextPrintStream() { - File file = generateFileMountedOnSDcard(mContext, R.string.file_path, - R.string.file_name_txt_format); - if (file == null) { - Log.e(TAG, "create file to exported failed"); - return null; - } - mFileName = file.getName(); - mFileDirectory = mContext.getString(R.string.file_path); - PrintStream ps = null; - try { - FileOutputStream fos = new FileOutputStream(file); - ps = new PrintStream(fos); //将ps输出流输出到特定的文件，目的就是导出到文件，而不是直接输出 - } catch (FileNotFoundException e) { - e.printStackTrace(); - return null; - } catch (NullPointerException e) { - e.printStackTrace(); - return null; - } - return ps; - } - } - - /** - * Generate the text file to store imported data - */ - private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) { - StringBuilder sb = new StringBuilder(); - sb.append(Environment.getExternalStorageDirectory()); //外部（SD卡）的存储路径 - sb.append(context.getString(filePathResId)); //文件的存储路径 - File filedir = new File(sb.toString()); //filedir应该就是用来存储路径信息 - sb.append(context.getString( - fileNameFormatResId, - DateFormat.format(context.getString(R.string.format_date_ymd), - System.currentTimeMillis()))); - File file = new File(sb.toString()); - - try { //如果这些文件不存在，则新建 - if (!filedir.exists()) { - filedir.mkdir(); - } - if (!file.exists()) { - file.createNewFile(); - } - return file; - } catch (SecurityException e) { - e.printStackTrace(); - } catch (IOException e) { - e.printStackTrace(); - } -// try catch 异常处理 - return null; - } -} -DataUtils.java -package net.micode.notes.tool; - -public class DataUtils { - public static final String TAG = "DataUtils"; - public static boolean batchDeleteNotes(ContentResolver resolver, HashSet ids) { //直接删除多个笔记 - if (ids == null) { - Log.d(TAG, "the ids is null"); - return true; - } - if (ids.size() == 0) { - Log.d(TAG, "no id is in the hashset"); - return true; - } - - ArrayList operationList = new ArrayList(); //提供一个任务列表 - for (long id : ids) { - if(id == Notes.ID_ROOT_FOLDER) { - Log.e(TAG, "Don't delete system folder root"); - continue; - } //如果发现是根文件夹，则不删除 - ContentProviderOperation.Builder builder = ContentProviderOperation - .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); //用newDelete实现删除功能 - operationList.add(builder.build()); // - } - try { - ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);//主机名（或叫Authority）用于唯一标识这个ContentProvider，外部调用者可以根据这个标识来找到它。 - //数据库事务，数据库事务是由一组数据库操作序列组成，事务作为一个整体被执行 - if (results == null || results.length == 0 || results[0] == null) { - Log.d(TAG, "delete notes failed, ids:" + ids.toString()); - return false; - } - return true; - } catch (RemoteException e) { - Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); - } catch (OperationApplicationException e) { - Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); - } - return false; - } - - public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) { - ContentValues values = new ContentValues(); - values.put(NoteColumns.PARENT_ID, desFolderId); - values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId); - values.put(NoteColumns.LOCAL_MODIFIED, 1); - resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null); //对需要移动的便签进行数据更新，然后用update实现 - } - - public static boolean batchMoveToFolder(ContentResolver resolver, HashSet ids, - long folderId) { - if (ids == null) { - Log.d(TAG, "the ids is null"); - return true; - } - - ArrayList operationList = new ArrayList(); - for (long id : ids) { - ContentProviderOperation.Builder builder = ContentProviderOperation - .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); //通过withAppendedId方法，为该Uri加上ID - builder.withValue(NoteColumns.PARENT_ID, folderId); - builder.withValue(NoteColumns.LOCAL_MODIFIED, 1); - operationList.add(builder.build()); - }//将ids里包含的每一列的数据逐次加入到operationList中，等待最后的批量处理 - - try { - ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); //applyBatch一次性处理一个操作列表 - if (results == null || results.length == 0 || results[0] == null) { - Log.d(TAG, "delete notes failed, ids:" + ids.toString()); - return false; - } - return true; - } catch (RemoteException e) { - Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); - } catch (OperationApplicationException e) { - Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); - } - return false; - } - - /** - * Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}} - */ - public static int getUserFolderCount(ContentResolver resolver) { - Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI, - new String[] { "COUNT(*)" }, - NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?", - new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)}, - null); //筛选条件：源文件不为trash folder - - int count = 0; - if(cursor != null) { - if(cursor.moveToFirst()) { - try { - count = cursor.getInt(0); - } catch (IndexOutOfBoundsException e) { - Log.e(TAG, "get folder count failed:" + e.toString()); - } finally { - cursor.close(); - } - } - } - return count; - } - - public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) { - Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), //通过withAppendedId方法，为该Uri加上ID - null, - NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER, - new String [] {String.valueOf(type)}, - null); //查询条件：type符合，且不属于垃圾文件夹 - - boolean exist = false; - if (cursor != null) { - if (cursor.getCount() > 0) {//用getcount函数判断cursor是否为空 - exist = true; - } - cursor.close(); - } - return exist; - } - - public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) { - Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), - null, null, null, null); - - boolean exist = false; - if (cursor != null) { - if (cursor.getCount() > 0) { - exist = true; - } - cursor.close(); - } - return exist; - } - - public static boolean existInDataDatabase(ContentResolver resolver, long dataId) { - Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), - null, null, null, null); - - boolean exist = false; - if (cursor != null) { - if (cursor.getCount() > 0) { - exist = true; - } - cursor.close(); - } - return exist; - } - - public static boolean checkVisibleFolderName(ContentResolver resolver, String name) { - Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null, - NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + - " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + - " AND " + NoteColumns.SNIPPET + "=?", - new String[] { name }, null); - //通过名字查询文件是否存在 - boolean exist = false; - if(cursor != null) { - if(cursor.getCount() > 0) { - exist = true; - } - cursor.close(); - } - return exist; - } - - public static HashSet getFolderNoteWidget(ContentResolver resolver, long folderId) { - Cursor c = resolver.query(Notes.CONTENT_NOTE_URI, - new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE }, - NoteColumns.PARENT_ID + "=?", - new String[] { String.valueOf(folderId) }, - null); //查询条件：父ID是传入的folderId; - - HashSet set = null; - if (c != null) { - if (c.moveToFirst()) { - set = new HashSet(); - do { - try { - AppWidgetAttribute widget = new AppWidgetAttribute(); - widget.widgetId = c.getInt(0); //0对应的NoteColumns.WIDGET_ID - widget.widgetType = c.getInt(1); //1对应的NoteColumns.WIDGET_TYPE - set.add(widget); - } catch (IndexOutOfBoundsException e) { - Log.e(TAG, e.toString()); - } - } while (c.moveToNext()); //查询下一条 - } - c.close(); - } - return set; - } - - public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) { - Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI, - new String [] { CallNote.PHONE_NUMBER }, - CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?", - new String [] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE }, - null); - - if (cursor != null && cursor.moveToFirst()) { - try { - return cursor.getString(0); - } catch (IndexOutOfBoundsException e) { - Log.e(TAG, "Get call number fails " + e.toString()); - } finally { - cursor.close(); - } - } - return ""; - } - - public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) { - Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI, - new String [] { CallNote.NOTE_ID }, - CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL(" - + CallNote.PHONE_NUMBER + ",?)", - new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber }, - null); - //通过数据库操作，查询条件是（callDate和phoneNumber匹配传入参数的值） - - if (cursor != null) { - if (cursor.moveToFirst()) { - try { - return cursor.getLong(0); //0对应的CallNote.NOTE_ID - } catch (IndexOutOfBoundsException e) { - Log.e(TAG, "Get call note id fails " + e.toString()); - } - } - cursor.close(); - } - return 0; - } - - public static String getSnippetById(ContentResolver resolver, long noteId) { - Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, - new String [] { NoteColumns.SNIPPET }, - NoteColumns.ID + "=?", - new String [] { String.valueOf(noteId)}, - null);//查询条件：noteId - - if (cursor != null) { - String snippet = ""; - if (cursor.moveToFirst()) { - snippet = cursor.getString(0); - } - cursor.close(); - return snippet; - } - throw new IllegalArgumentException("Note is not found with id: " + noteId); - } - public static String getFormattedSnippet(String snippet) { //对字符串进行格式处理，将字符串两头的空格去掉，同时将换行符去掉 - if (snippet != null) { - snippet = snippet.trim(); - int index = snippet.indexOf('\n'); - if (index != -1) { - snippet = snippet.substring(0, index); - } - } - return snippet; - } - -} -GTaskStringUtils.java -//简介：定义了很多的静态字符串，目的就是为了提供jsonObject中相应字符串的"key"。把这些静态的定义单独写到了一个类里面，这是非常好的编程规范 -package net.micode.notes.tool; - -//这个类就是定义了一堆static string，实际就是为jsonObject提供Key，把这些定义全部写到一个类里，方便查看管理，是一个非常好的编程习惯 -public class GTaskStringUtils { - - public final static String GTASK_JSON_ACTION_ID = "action_id"; - - public final static String GTASK_JSON_ACTION_LIST = "action_list"; - - public final static String GTASK_JSON_ACTION_TYPE = "action_type"; - - public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create"; - - public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all"; - - public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move"; - - public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update"; - - public final static String GTASK_JSON_CREATOR_ID = "creator_id"; - - public final static String GTASK_JSON_CHILD_ENTITY = "child_entity"; - - public final static String GTASK_JSON_CLIENT_VERSION = "client_version"; - - public final static String GTASK_JSON_COMPLETED = "completed"; - - public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id"; - - public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id"; - - public final static String GTASK_JSON_DELETED = "deleted"; - - public final static String GTASK_JSON_DEST_LIST = "dest_list"; - - public final static String GTASK_JSON_DEST_PARENT = "dest_parent"; - - public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type"; - - public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta"; - - public final static String GTASK_JSON_ENTITY_TYPE = "entity_type"; - - public final static String GTASK_JSON_GET_DELETED = "get_deleted"; - - public final static String GTASK_JSON_ID = "id"; - - public final static String GTASK_JSON_INDEX = "index"; - - public final static String GTASK_JSON_LAST_MODIFIED = "last_modified"; - - public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point"; - - public final static String GTASK_JSON_LIST_ID = "list_id"; - - public final static String GTASK_JSON_LISTS = "lists"; - - public final static String GTASK_JSON_NAME = "name"; - - public final static String GTASK_JSON_NEW_ID = "new_id"; - - public final static String GTASK_JSON_NOTES = "notes"; - - public final static String GTASK_JSON_PARENT_ID = "parent_id"; - - public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id"; - - public final static String GTASK_JSON_RESULTS = "results"; - - public final static String GTASK_JSON_SOURCE_LIST = "source_list"; - - public final static String GTASK_JSON_TASKS = "tasks"; - - public final static String GTASK_JSON_TYPE = "type"; - - public final static String GTASK_JSON_TYPE_GROUP = "GROUP"; - - public final static String GTASK_JSON_TYPE_TASK = "TASK"; - - public final static String GTASK_JSON_USER = "user"; - - public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]"; - - public final static String FOLDER_DEFAULT = "Default"; - - public final static String FOLDER_CALL_NOTE = "Call_Note"; - - public final static String FOLDER_META = "METADATA"; - - public final static String META_HEAD_GTASK_ID = "meta_gid"; - - public final static String META_HEAD_NOTE = "meta_note"; - - public final static String META_HEAD_DATA = "meta_data"; - - public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE"; - -} -ResourceParser.java -package net.micode.notes.tool; - -/*简介：字面意义是资源分析器，实际上就是获取资源并且在程序中使用，比如颜色图片等 - * 实现方法：主要利用R.java这个类，其中包括 - * R.id 组件资源引用 - * R.drawable 图片资源 （被使用） - * R.layout 布局资源 - * R.menu 菜单资源 - * R.String 文字资源 - * R.style 主题资源 （被使用） - * 在按顺序设置好相应的id后，就可以编写简单的getXXX函数获取需要的资源 - * - * 特殊的变量 ： - * @BG_DEFAULT_COLOR 默认背景颜色（黄） - * BG_DEFAULT_FONT_SIZE 默认文本大小（中） - */ - -public class ResourceParser { - - public static final int YELLOW = 0; - public static final int BLUE = 1; - public static final int WHITE = 2; - public static final int GREEN = 3; - public static final int RED = 4; - - public static final int BG_DEFAULT_COLOR = YELLOW; - - public static final int TEXT_SMALL = 0; - public static final int TEXT_MEDIUM = 1; - public static final int TEXT_LARGE = 2; - public static final int TEXT_SUPER = 3; - - public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM; - - public static class NoteBgResources { - private final static int [] BG_EDIT_RESOURCES = new int [] { - R.drawable.edit_yellow, - R.drawable.edit_blue, - R.drawable.edit_white, - R.drawable.edit_green, - R.drawable.edit_red - }; - - private final static int [] BG_EDIT_TITLE_RESOURCES = new int [] { - R.drawable.edit_title_yellow, - R.drawable.edit_title_blue, - R.drawable.edit_title_white, - R.drawable.edit_title_green, - R.drawable.edit_title_red - }; - - public static int getNoteBgResource(int id) { - return BG_EDIT_RESOURCES[id]; - } - - public static int getNoteTitleBgResource(int id) { - return BG_EDIT_TITLE_RESOURCES[id]; - } - } - //直接获取默认的背景颜色。看不太懂，这个PREFERENCE_SET_BG_COLOR_KEY是个final string,也就是说getBoolean肯定执行else，为什么要这么写 - public static int getDefaultBgId(Context context) { - if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean( - NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) { - return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length); - } else { - return BG_DEFAULT_COLOR; - } - } - - public static class NoteItemBgResources { - private final static int [] BG_FIRST_RESOURCES = new int [] { - R.drawable.list_yellow_up, - R.drawable.list_blue_up, - R.drawable.list_white_up, - R.drawable.list_green_up, - R.drawable.list_red_up - }; - - private final static int [] BG_NORMAL_RESOURCES = new int [] { - R.drawable.list_yellow_middle, - R.drawable.list_blue_middle, - R.drawable.list_white_middle, - R.drawable.list_green_middle, - R.drawable.list_red_middle - }; - - private final static int [] BG_LAST_RESOURCES = new int [] { - R.drawable.list_yellow_down, - R.drawable.list_blue_down, - R.drawable.list_white_down, - R.drawable.list_green_down, - R.drawable.list_red_down, - }; - - private final static int [] BG_SINGLE_RESOURCES = new int [] { - R.drawable.list_yellow_single, - R.drawable.list_blue_single, - R.drawable.list_white_single, - R.drawable.list_green_single, - R.drawable.list_red_single - }; - - public static int getNoteBgFirstRes(int id) { - return BG_FIRST_RESOURCES[id]; - } - - public static int getNoteBgLastRes(int id) { - return BG_LAST_RESOURCES[id]; - } - - public static int getNoteBgSingleRes(int id) { - return BG_SINGLE_RESOURCES[id]; - } - - public static int getNoteBgNormalRes(int id) { - return BG_NORMAL_RESOURCES[id]; - } - - public static int getFolderBgRes() { - return R.drawable.list_folder; - } - } - - public static class WidgetBgResources { - private final static int [] BG_2X_RESOURCES = new int [] { - R.drawable.widget_2x_yellow, - R.drawable.widget_2x_blue, - R.drawable.widget_2x_white, - R.drawable.widget_2x_green, - R.drawable.widget_2x_red, - }; - - public static int getWidget2xBgResource(int id) { - return BG_2X_RESOURCES[id]; - } - - private final static int [] BG_4X_RESOURCES = new int [] { - R.drawable.widget_4x_yellow, - R.drawable.widget_4x_blue, - R.drawable.widget_4x_white, - R.drawable.widget_4x_green, - R.drawable.widget_4x_red - }; - - public static int getWidget4xBgResource(int id) { - return BG_4X_RESOURCES[id]; - } - } - - public static class TextAppearanceResources { - private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] { - R.style.TextAppearanceNormal, - R.style.TextAppearanceMedium, - R.style.TextAppearanceLarge, - R.style.TextAppearanceSuper - }; - - //这里有一个容错的函数，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 getTexAppearanceResource(int id) { - /** - * HACKME: Fix bug of store the resource id in shared preference. - * The id may larger than the length of resources, in this case, - * return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE} - */ - if (id >= TEXTAPPEARANCE_RESOURCES.length) { - return BG_DEFAULT_FONT_SIZE; - } - return TEXTAPPEARANCE_RESOURCES[id]; - } - - public static int getResourcesSize() { - return TEXTAPPEARANCE_RESOURCES.length; - } - } -}