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xiaomibianqian/DataUtils.java

306 lines
13 KiB

2 months ago
/*
* (c) 2010-2011, The MiCode (www.micode.net)
*
* Apache License, Version 2.0
* 使
*
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*
*
*
*/
package net.micode.notes.tool; // 定义包名
import android.content.ContentProviderOperation; // 用于执行内容提供者操作
import android.content.ContentProviderResult; // 用于处理内容提供者操作的结果
import android.content.ContentResolver; // 用于访问内容提供者
import android.content.ContentUris; // 用于构建内容URI
import android.content.ContentValues; // 用于存储键值对
import android.content.OperationApplicationException; // 操作应用异常
import android.database.Cursor; // 用于访问数据库的游标
import android.os.RemoteException; // 远程异常
import android.util.Log; // 日志类
import net.micode.notes.data.Notes; // 笔记数据类
import net.micode.notes.data.Notes.CallNote; // 通话笔记数据类
import net.micode.notes.data.Notes.NoteColumns; // 笔记列数据类
import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute; // 小部件属性类
import java.util.ArrayList; // 动态数组
import java.util.HashSet; // 哈希集合
public class DataUtils {
public static final String TAG = "DataUtils"; // 日志标签
// 批量删除笔记
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
if (ids == null) {
Log.d(TAG, "the ids is null"); // 如果id为null记录日志并返回true
return true;
}
if (ids.size() == 0) {
Log.d(TAG, "no id is in the hashset"); // 如果哈希集中没有id记录日志并返回true
return true;
}
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
if(id == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Don't delete system folder root"); // 系统根文件夹不能删除,记录错误日志
continue;
}
ContentProviderOperation.Builder builder = ContentProviderOperation
.newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); // 创建删除操作
operationList.add(builder.build()); // 添加到操作列表
}
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); // 应用批量操作
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString()); // 删除失败,记录日志
return false;
}
return true; // 删除成功
} catch (RemoteException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); // 远程异常,记录错误日志
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); // 操作应用异常,记录错误日志
}
return false; // 异常时返回false
}
// 将笔记移动到另一个文件夹
public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
ContentValues values = new ContentValues(); // 创建ContentValues对象
values.put(NoteColumns.PARENT_ID, desFolderId); // 设置目标文件夹id
values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId); // 设置原始文件夹id
values.put(NoteColumns.LOCAL_MODIFIED, 1); // 设置本地修改标志为1
resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null); // 更新笔记
}
// 批量将笔记移动到指定文件夹
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
long folderId) {
if (ids == null) {
Log.d(TAG, "the ids is null"); // id为null时记录日志并返回true
return true;
}
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
ContentProviderOperation.Builder builder = ContentProviderOperation
.newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id)); // 创建更新操作
builder.withValue(NoteColumns.PARENT_ID, folderId); // 设置目标文件夹id
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1); // 设置本地修改标志为1
operationList.add(builder.build()); // 添加到操作列表
}
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList); // 应用批量操作
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString()); // 删除失败,记录日志
return false;
}
return true; // 删除成功
} catch (RemoteException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); // 远程异常,记录错误日志
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage())); // 操作应用异常,记录错误日志
}
return false; // 异常时返回false
}
/**
*
*/
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);
int count = 0;
if(cursor != null) {
if(cursor.moveToFirst()) {
try {
count = cursor.getInt(0); // 获取文件夹数量
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "get folder count failed:" + e.toString()); // 获取失败,记录错误日志
} finally {
cursor.close(); // 关闭游标
}
}
}
return count; // 返回文件夹数量
}
// 检查笔记在数据库中是否可见
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
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; // 笔记存在且可见
}
cursor.close();
}
return exist; // 返回笔记是否可见
}
// 检查笔记在数据库中是否存在
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; // 笔记存在
}
cursor.close();
}
return exist; // 返回笔记是否存在
}
// 检查数据在数据库中是否存在
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; // 数据存在
}
cursor.close();
}
return exist; // 返回数据是否存在
}
// 检查指定名称的文件夹是否可见
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);
boolean exist = false;
if(cursor != null) {
if(cursor.getCount() > 0) {
exist = true; // 文件夹存在且可见
}
cursor.close();
}
return exist; // 返回文件夹是否可见
}
// 获取文件夹笔记小部件
public static HashSet<AppWidgetAttribute> 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);
HashSet<AppWidgetAttribute> set = null;
if (c != null) {
if (c.moveToFirst()) {
set = new HashSet<AppWidgetAttribute>();
do {
try {
AppWidgetAttribute widget = new AppWidgetAttribute();
widget.widgetId = c.getInt(0); // 获取小部件ID
widget.widgetType = c.getInt(1); // 获取小部件类型
set.add(widget); // 添加到集合中
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, e.toString()); // 异常,记录错误日志
}
} while (c.moveToNext());
}
c.close(); // 关闭游标
}
return set; // 返回小部件集合
}
// 根据笔记ID获取呼叫号码
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); // 获取呼叫号码
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call number fails " + e.toString()); // 异常,记录错误日志
} finally {
cursor.close(); // 关闭游标
}
}
return ""; // 未找到时返回空字符串
}
// 根据电话号码和呼叫日期获取笔记ID
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);
if (cursor != null) {
if (cursor.moveToFirst()) {
try {
return cursor.getLong(0); // 获取笔记ID
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call note id fails " + e.toString()); // 异常,记录错误日志
}
}
cursor.close(); // 关闭游标
}
return 0; // 未找到时返回0
}
// 根据ID获取笔记摘要
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);
if (cursor != null) {
String snippet = "";
if (cursor.moveToFirst()) {
snippet = cursor.getString(0); // 获取摘要
}
cursor.close(); // 关闭游标
return snippet; // 返回摘要
}
throw new IllegalArgumentException("Note is not found with id: " + noteId); // 未找到时抛出异常
}
// 获取格式化后的摘要
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
snippet = snippet.trim(); // 去除首尾空白
int index = snippet.indexOf('\n'); // 查找换行符位置
if (index != -1) {
snippet = snippet.substring(0, index); // 截取到换行符之前的部分
}
}
return snippet; // 返回格式化后的摘要
}
}