/* * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.micode.notes.tool; import android.content.ContentProviderOperation; import android.content.ContentProviderResult; import android.content.ContentResolver; import android.content.ContentUris; import android.content.ContentValues; import android.content.OperationApplicationException; import android.database.Cursor; import android.os.RemoteException; import android.util.Log; import net.micode.notes.data.Notes; import net.micode.notes.data.Notes.CallNote; import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute; import java.util.ArrayList; import java.util.HashSet; public class DataUtils { // 定义一个用于日志的标签常量 public static final String TAG = "DataUtils"; // 批量删除笔记的方法,接受ContentResolver对象和一组笔记的ID集合 public static boolean batchDeleteNotes(ContentResolver resolver, HashSet ids) { // 检查ID集合是否为null,如果为null,记录日志并返回true if (ids == null) { Log.d(TAG, "the ids is null"); return true; } // 检查ID集合是否为空,如果为空,记录日志并返回true if(ids.size() == 0) { Log.d(TAG, "no id is in the hashset"); return true; } // 创建一个ContentProviderOperation列表,用于存储删除操作 ArrayList operationList = new ArrayList(); // 遍历ID集合,为每个ID创建一个删除操作 for (long id : ids) { // 如果ID是根文件夹ID,记录错误日志并跳过删除操作 if(id == Notes.ID_ROOT_FOLDER) { Log.e(TAG, "Don't delete system folder root"); continue; } // 创建删除操作的Builder对象 ContentProviderOperation.Builder builder = ContentProviderOperation .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); // 将构建好的删除操作添加到操作列表中 operationList.add(builder.build()); } try { // 执行批量操作,应用删除操作 ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); // 检查删除结果,如果结果为空、长度为0或第一个结果为null,记录日志并返回false if (results == null || results.length == 0 || results[0] == null) { Log.d(TAG, "delete notes failed, ids:" + ids.toString()); return false; } // 删除成功,返回true return true; } catch (RemoteException e) { // 捕获RemoteException,记录错误日志 Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); } catch (OperationApplicationException e) { // 捕获OperationApplicationException,记录错误日志 Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); } // 如果发生异常,返回false return false; } // 将笔记移动到指定文件夹 public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) { // 创建一个ContentValues对象,用于存储更新的值 ContentValues values = new ContentValues(); // 将目标文件夹ID设置为新的父文件夹ID values.put(NoteColumns.PARENT_ID, desFolderId); // 将原始父文件夹ID设置为源文件夹ID values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId); // 将LOCAL_MODIFIED标记设置为1,表示已修改 values.put(NoteColumns.LOCAL_MODIFIED, 1); // 更新数据库中的笔记记录 resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null); } // 批量将笔记移动到指定文件夹 public static boolean batchMoveToFolder(ContentResolver resolver, HashSet ids, long folderId) { // 检查ID集合是否为空,如果为空,记录日志并返回true if (ids == null) { Log.d(TAG, "the ids is null"); return true; } // 创建一个操作列表,用于存储更新操作 ArrayList operationList = new ArrayList(); // 遍历ID集合,为每个ID创建一个更新操作 for (long id : ids) { // 创建更新操作的Builder对象 ContentProviderOperation.Builder builder = ContentProviderOperation .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); // 设置更新的值,将目标文件夹ID设置为新的父文件夹ID,将LOCAL_MODIFIED标记设置为1 builder.withValue(NoteColumns.PARENT_ID, folderId); builder.withValue(NoteColumns.LOCAL_MODIFIED, 1); // 将更新操作添加到操作列表中 operationList.add(builder.build()); } try { // 应用批量更新操作 ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); // 检查更新结果,如果结果为空、长度为0或第一个结果为null,记录日志并返回false if (results == null || results.length == 0 || results[0] == null) { Log.d(TAG, "delete notes failed, ids:" + ids.toString()); return false; } // 更新成功,返回true return true; } catch (RemoteException e) { // 捕获RemoteException,记录错误日志 Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); } catch (OperationApplicationException e) { // 捕获OperationApplicationException,记录错误日志 Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); } // 更新失败,返回false return false; } /** * Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}} */ // 获取用户文件夹的数量 public static int getUserFolderCount(ContentResolver resolver) { // 查询笔记数据库,统计用户文件夹的数量 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); int count = 0; if(cursor != null) { if(cursor.moveToFirst()) { try { // 从查询结果中获取用户文件夹的数量 count = cursor.getInt(0); } catch (IndexOutOfBoundsException e) { // 捕获IndexOutOfBoundsException异常,记录错误日志 Log.e(TAG, "get folder count failed:" + e.toString()); } finally { // 关闭游标 cursor.close(); } } } // 返回用户文件夹的数量 return count; } // 检查笔记是否在数据库中可见 public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) { // 查询笔记数据库,检查笔记是否在数据库中可见 Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null, NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER, new String [] {String.valueOf(type)}, null); boolean exist = false; if (cursor != null) { if (cursor.getCount() > 0) { exist = true; } // 关闭游标 cursor.close(); } // 返回笔记是否在数据库中可见 return exist; } // 检查笔记是否存在于数据库中 public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) { // 查询笔记数据库,检查笔记是否存在于数据库中 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; } // 关闭游标 cursor.close(); } // 返回笔记是否存在于数据库中 return exist; } // 检查数据是否存在于数据库中 public static boolean existInDataDatabase(ContentResolver resolver, long dataId) { // 查询数据数据库,检查数据是否存在于数据库中 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; } // 关闭游标 cursor.close(); } // 返回数据是否存在于数据库中 return exist; } // 检查可见文件夹名称是否存在于数据库中 public static boolean checkVisibleFolderName(ContentResolver resolver, String name) { // 查询笔记数据库,检查可见文件夹名称是否存在于数据库中 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); boolean exist = false; if(cursor != null) { if(cursor.getCount() > 0) { exist = true; } // 关闭游标 cursor.close(); } // 返回可见文件夹名称是否存在于数据库中 return exist; } // 获取文件夹中所有笔记的小部件信息集合 public static HashSet getFolderNoteWidget(ContentResolver resolver, long folderId) { // 查询指定文件夹中所有笔记的小部件信息 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); HashSet set = null; if (c != null) { if (c.moveToFirst()) { // 如果查询结果不为空,创建一个HashSet对象,用于存储小部件信息 set = new HashSet(); do { try { // 遍历查询结果,为每个笔记创建一个小部件属性对象,并将其添加到HashSet中 AppWidgetAttribute widget = new AppWidgetAttribute(); widget.widgetId = c.getInt(0); widget.widgetType = c.getInt(1); set.add(widget); } catch (IndexOutOfBoundsException e) { // 捕获IndexOutOfBoundsException异常,记录错误日志 Log.e(TAG, e.toString()); } } while (c.moveToNext()); } // 关闭游标 c.close(); } // 返回文件夹中所有笔记的小部件信息集合 return set; } // 根据笔记ID获取通话记录号码 public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) { // 查询指定笔记ID的通话记录号码 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 { // 如果查询结果不为空,获取通话记录号码并返回 return cursor.getString(0); } catch (IndexOutOfBoundsException e) { // 捕获IndexOutOfBoundsException异常,记录错误日志 Log.e(TAG, "Get call number fails " + e.toString()); } finally { // 关闭游标 cursor.close(); } } // 如果查询结果为空或发生异常,返回空字符串 return ""; } // 根据通话日期和电话号码查询通话记录的笔记ID public static long getCallNoteIdByCallDateAndPhoneNumber(ContentResolver resolver, long callDate, String phoneNumber) { // 查询通话日期和电话号码匹配的通话记录的笔记ID 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); if (cursor != null) { if (cursor.moveToFirst()) { try { // 如果查询结果不为空,获取通话记录的笔记ID并返回 return cursor.getLong(0); } catch (IndexOutOfBoundsException e) { // 捕获IndexOutOfBoundsException异常,记录错误日志 Log.e(TAG, "Get call note id fails " + e.toString()); } } // 关闭游标 cursor.close(); } // 如果查询结果为空或发生异常,返回0 return 0; } // 根据笔记ID查询摘要 public static String getSnippetById(ContentResolver resolver, long noteId) { // 查询指定笔记ID的摘要信息 Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, new String [] { NoteColumns.SNIPPET }, NoteColumns.ID + "=?", new String [] { String.valueOf(noteId)}, null); if (cursor != null) { String snippet = ""; if (cursor.moveToFirst()) { // 如果查询结果不为空,获取摘要信息并返回 snippet = cursor.getString(0); } // 关闭游标 cursor.close(); return snippet; } // 如果查询结果为空,抛出IllegalArgumentException异常 throw new IllegalArgumentException("Note is not found with id: " + noteId); } // 格式化摘要信息 public static String getFormattedSnippet(String snippet) { if (snippet != null) { // 去除摘要信息两端的空格 snippet = snippet.trim(); // 查找摘要信息中第一个换行符的位置 int index = snippet.indexOf('\n'); if (index != -1) { // 如果存在换行符,截取换行符之前的部分作为摘要 snippet = snippet.substring(0, index); } } // 返回格式化后的摘要信息 return snippet; } }