注释 tool.DataUtils

pull/13/head
chenqy 3 years ago
parent a2738e251a
commit 7c1a30cd03

@ -37,7 +37,16 @@ import java.util.HashSet;
public class DataUtils {
public static final String TAG = "DataUtils";
/**
*
*
* @param resolver ContentResolver
* @param ids HashSet<Long>id
* @return boolean
*/
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
// 如果ids为空或者size为0则直接返回true
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
@ -47,74 +56,119 @@ public class DataUtils {
return true;
}
// 创建操作列表
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
// 不包括系统文件夹根节点
if(id == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Don't delete system folder root");
continue;
}
// 创建ContentProviderOperation.Builder对象来构建删除该id的操作并将其添加到operationList中
ContentProviderOperation.Builder builder = ContentProviderOperation
.newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
operationList.add(builder.build());
}
try {
// 通过ContentResolver的applyBatch()方法将所有操作提交给ContentProvider执行
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
}
// 如果成功则返回true
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()));
}
// 失败则返回false
return false;
}
/**
*
*
* @param resolver ContentResolver
* @param id id
* @param srcFolderId id
* @param desFolderId id
*/
public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
// 创建ContentValues对象用于存放需要更新的字段和值
ContentValues values = new ContentValues();
// 更新Parent_Id字段为目标文件夹id
values.put(NoteColumns.PARENT_ID, desFolderId);
// 更新Origin_Parent_Id字段为原文件夹id
values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
// 更新Local_Modified字段为1
values.put(NoteColumns.LOCAL_MODIFIED, 1);
// 调用ContentResolver的update()方法来更新数据
resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
}
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
long folderId) {
/**
*
*
* @param resolver ContentResolver
* @param ids HashSet<Long>id
* @param folderId id
* @return boolean
*/
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids, long folderId) {
// 如果ids为空则直接返回true
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
// 创建操作列表
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
// 创建ContentProviderOperation.Builder对象来构建更新该id的操作并将其添加到operationList中
ContentProviderOperation.Builder builder = ContentProviderOperation
.newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
// 更新Parent_Id字段为目标文件夹id
builder.withValue(NoteColumns.PARENT_ID, folderId);
// 更新Local_Modified字段为1
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
operationList.add(builder.build());
}
try {
// 通过ContentResolver的applyBatch()方法将所有操作提交给ContentProvider执行
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
Log.d(TAG, "move notes failed, ids:" + ids.toString());
return false;
}
// 如果成功则返回true
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()));
}
// 失败则返回false
return false;
}
/**
* Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
*/
/**
*
*
* @param resolver ContentResolver
* @return int
*/
public static int getUserFolderCount(ContentResolver resolver) {
// 查询ContentProvider中的所有符合条件的数据并返回查询结果Cursor对象
Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { "COUNT(*)" },
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
@ -125,18 +179,30 @@ public class DataUtils {
if(cursor != null) {
if(cursor.moveToFirst()) {
try {
// 从Cursor对象中获取查询结果中count字段的值
count = cursor.getInt(0);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "get folder count failed:" + e.toString());
} finally {
// 关闭游标
cursor.close();
}
}
}
// 返回用户自定义文件夹数量
return count;
}
/**
* idContentProvider
*
* @param resolver ContentResolver
* @param noteId id
* @param type 0
* @return booleanidContentProvider
*/
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
// 查询ContentProvider中指定id的笔记是否存在并返回查询结果Cursor对象
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null,
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
@ -148,12 +214,23 @@ public class DataUtils {
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭游标
cursor.close();
}
// 返回指定id的笔记是否存在于ContentProvider中
return exist;
}
/**
* idContentProvider
*
* @param resolver ContentResolver
* @param noteId id
* @return booleanidContentProvider
*/
public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
// 查询ContentProvider中指定id的笔记是否存在并返回查询结果Cursor对象
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null, null, null, null);
@ -162,12 +239,22 @@ public class DataUtils {
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭游标
cursor.close();
}
// 返回指定id的笔记是否存在于ContentProvider中
return exist;
}
/**
* idContentProvider
*
* @param resolver ContentResolver
* @param dataId id
* @return booleanidContentProvider
*/
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
// 查询ContentProvider中指定id的数据是否存在并返回查询结果Cursor对象
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
null, null, null, null);
@ -176,28 +263,48 @@ public class DataUtils {
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭游标
cursor.close();
}
// 返回指定id的数据是否存在于ContentProvider中
return exist;
}
/**
* ContentProvider
*
* @param resolver ContentResolver
* @param name
* @return booleanContentProvider
*/
public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
// 查询ContentProvider中指定名称的文件夹是否存在并返回查询结果Cursor对象
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 + "=?",
" 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();
}
// 返回指定名称的文件夹是否存在于ContentProvider中
return exist;
}
/**
* Widget
*
* @param resolver ContentResolver
* @param folderId id
* @return HashSet<AppWidgetAttribute>Widget
*/
public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
// 查询ContentProvider中指定文件夹下的所有Widget信息并返回查询结果Cursor对象
Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
NoteColumns.PARENT_ID + "=?",
@ -210,6 +317,7 @@ public class DataUtils {
set = new HashSet<AppWidgetAttribute>();
do {
try {
// 从Cursor对象中获取查询结果中Widget的id和类型并将其封装到AppWidgetAttribute对象中
AppWidgetAttribute widget = new AppWidgetAttribute();
widget.widgetId = c.getInt(0);
widget.widgetType = c.getInt(1);
@ -219,12 +327,23 @@ public class DataUtils {
}
} while (c.moveToNext());
}
// 关闭游标
c.close();
}
// 返回指定文件夹下的所有Widget信息
return set;
}
/**
* id
*
* @param resolver ContentResolver
* @param noteId id
* @return String
*/
public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
// 查询ContentProvider中指定笔记id对应的电话号码并返回查询结果Cursor对象
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String [] { CallNote.PHONE_NUMBER },
CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
@ -237,17 +356,28 @@ public class DataUtils {
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call number fails " + e.toString());
} finally {
// 关闭游标
cursor.close();
}
}
// 如果查询失败则返回空字符串
return "";
}
/**
* id
*
* @param resolver ContentResolver
* @param phoneNumber
* @param callDate
* @return longid
*/
public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
// 查询ContentProvider中指定电话号码和通话日期对应的笔记id并返回查询结果Cursor对象
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 + ",?)",
+ CallNote.PHONE_NUMBER + ",?)",
new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
null);
@ -259,12 +389,23 @@ public class DataUtils {
Log.e(TAG, "Get call note id fails " + e.toString());
}
}
// 关闭游标
cursor.close();
}
// 如果查询失败则返回0
return 0;
}
/**
* id
*
* @param resolver ContentResolver
* @param noteId id
* @return String
*/
public static String getSnippetById(ContentResolver resolver, long noteId) {
// 查询ContentProvider中指定笔记id对应的摘要信息并返回查询结果Cursor对象
Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
new String [] { NoteColumns.SNIPPET },
NoteColumns.ID + "=?",
@ -276,20 +417,29 @@ public class DataUtils {
if (cursor.moveToFirst()) {
snippet = cursor.getString(0);
}
// 关闭游标
cursor.close();
return snippet;
}
// 如果查询失败则抛出异常
throw new IllegalArgumentException("Note is not found with id: " + noteId);
}
/**
*
*
* @param snippet
* @return String
*/
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
snippet = snippet.trim();
int index = snippet.indexOf('\n');
snippet = snippet.trim(); // 去除字符串两端的空格
int index = snippet.indexOf('\n'); // 查找第一个换行符位置
if (index != -1) {
snippet = snippet.substring(0, index);
snippet = snippet.substring(0, index); // 截取换行符之前的部分作为摘要信息
}
}
return snippet;
}
}

@ -37,7 +37,16 @@ import java.util.HashSet;
public class DataUtils {
public static final String TAG = "DataUtils";
/**
*
*
* @param resolver ContentResolver
* @param ids HashSet<Long>id
* @return boolean
*/
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
// 如果ids为空或者size为0则直接返回true
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
@ -47,74 +56,119 @@ public class DataUtils {
return true;
}
// 创建操作列表
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
// 不包括系统文件夹根节点
if(id == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Don't delete system folder root");
continue;
}
// 创建ContentProviderOperation.Builder对象来构建删除该id的操作并将其添加到operationList中
ContentProviderOperation.Builder builder = ContentProviderOperation
.newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
operationList.add(builder.build());
}
try {
// 通过ContentResolver的applyBatch()方法将所有操作提交给ContentProvider执行
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
}
// 如果成功则返回true
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()));
}
// 失败则返回false
return false;
}
/**
*
*
* @param resolver ContentResolver
* @param id id
* @param srcFolderId id
* @param desFolderId id
*/
public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
// 创建ContentValues对象用于存放需要更新的字段和值
ContentValues values = new ContentValues();
// 更新Parent_Id字段为目标文件夹id
values.put(NoteColumns.PARENT_ID, desFolderId);
// 更新Origin_Parent_Id字段为原文件夹id
values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
// 更新Local_Modified字段为1
values.put(NoteColumns.LOCAL_MODIFIED, 1);
// 调用ContentResolver的update()方法来更新数据
resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
}
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
long folderId) {
/**
*
*
* @param resolver ContentResolver
* @param ids HashSet<Long>id
* @param folderId id
* @return boolean
*/
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids, long folderId) {
// 如果ids为空则直接返回true
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
// 创建操作列表
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
// 创建ContentProviderOperation.Builder对象来构建更新该id的操作并将其添加到operationList中
ContentProviderOperation.Builder builder = ContentProviderOperation
.newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
// 更新Parent_Id字段为目标文件夹id
builder.withValue(NoteColumns.PARENT_ID, folderId);
// 更新Local_Modified字段为1
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
operationList.add(builder.build());
}
try {
// 通过ContentResolver的applyBatch()方法将所有操作提交给ContentProvider执行
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
Log.d(TAG, "move notes failed, ids:" + ids.toString());
return false;
}
// 如果成功则返回true
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()));
}
// 失败则返回false
return false;
}
/**
* Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
*/
/**
*
*
* @param resolver ContentResolver
* @return int
*/
public static int getUserFolderCount(ContentResolver resolver) {
// 查询ContentProvider中的所有符合条件的数据并返回查询结果Cursor对象
Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { "COUNT(*)" },
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
@ -125,18 +179,30 @@ public class DataUtils {
if(cursor != null) {
if(cursor.moveToFirst()) {
try {
// 从Cursor对象中获取查询结果中count字段的值
count = cursor.getInt(0);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "get folder count failed:" + e.toString());
} finally {
// 关闭游标
cursor.close();
}
}
}
// 返回用户自定义文件夹数量
return count;
}
/**
* idContentProvider
*
* @param resolver ContentResolver
* @param noteId id
* @param type 0
* @return booleanidContentProvider
*/
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
// 查询ContentProvider中指定id的笔记是否存在并返回查询结果Cursor对象
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null,
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
@ -148,12 +214,23 @@ public class DataUtils {
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭游标
cursor.close();
}
// 返回指定id的笔记是否存在于ContentProvider中
return exist;
}
/**
* idContentProvider
*
* @param resolver ContentResolver
* @param noteId id
* @return booleanidContentProvider
*/
public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
// 查询ContentProvider中指定id的笔记是否存在并返回查询结果Cursor对象
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null, null, null, null);
@ -162,12 +239,22 @@ public class DataUtils {
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭游标
cursor.close();
}
// 返回指定id的笔记是否存在于ContentProvider中
return exist;
}
/**
* idContentProvider
*
* @param resolver ContentResolver
* @param dataId id
* @return booleanidContentProvider
*/
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
// 查询ContentProvider中指定id的数据是否存在并返回查询结果Cursor对象
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
null, null, null, null);
@ -176,28 +263,48 @@ public class DataUtils {
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭游标
cursor.close();
}
// 返回指定id的数据是否存在于ContentProvider中
return exist;
}
/**
* ContentProvider
*
* @param resolver ContentResolver
* @param name
* @return booleanContentProvider
*/
public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
// 查询ContentProvider中指定名称的文件夹是否存在并返回查询结果Cursor对象
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 + "=?",
" 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();
}
// 返回指定名称的文件夹是否存在于ContentProvider中
return exist;
}
/**
* Widget
*
* @param resolver ContentResolver
* @param folderId id
* @return HashSet<AppWidgetAttribute>Widget
*/
public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
// 查询ContentProvider中指定文件夹下的所有Widget信息并返回查询结果Cursor对象
Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
NoteColumns.PARENT_ID + "=?",
@ -210,6 +317,7 @@ public class DataUtils {
set = new HashSet<AppWidgetAttribute>();
do {
try {
// 从Cursor对象中获取查询结果中Widget的id和类型并将其封装到AppWidgetAttribute对象中
AppWidgetAttribute widget = new AppWidgetAttribute();
widget.widgetId = c.getInt(0);
widget.widgetType = c.getInt(1);
@ -219,12 +327,23 @@ public class DataUtils {
}
} while (c.moveToNext());
}
// 关闭游标
c.close();
}
// 返回指定文件夹下的所有Widget信息
return set;
}
/**
* id
*
* @param resolver ContentResolver
* @param noteId id
* @return String
*/
public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
// 查询ContentProvider中指定笔记id对应的电话号码并返回查询结果Cursor对象
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String [] { CallNote.PHONE_NUMBER },
CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
@ -237,17 +356,28 @@ public class DataUtils {
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call number fails " + e.toString());
} finally {
// 关闭游标
cursor.close();
}
}
// 如果查询失败则返回空字符串
return "";
}
/**
* id
*
* @param resolver ContentResolver
* @param phoneNumber
* @param callDate
* @return longid
*/
public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
// 查询ContentProvider中指定电话号码和通话日期对应的笔记id并返回查询结果Cursor对象
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 + ",?)",
+ CallNote.PHONE_NUMBER + ",?)",
new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
null);
@ -259,12 +389,23 @@ public class DataUtils {
Log.e(TAG, "Get call note id fails " + e.toString());
}
}
// 关闭游标
cursor.close();
}
// 如果查询失败则返回0
return 0;
}
/**
* id
*
* @param resolver ContentResolver
* @param noteId id
* @return String
*/
public static String getSnippetById(ContentResolver resolver, long noteId) {
// 查询ContentProvider中指定笔记id对应的摘要信息并返回查询结果Cursor对象
Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
new String [] { NoteColumns.SNIPPET },
NoteColumns.ID + "=?",
@ -276,20 +417,29 @@ public class DataUtils {
if (cursor.moveToFirst()) {
snippet = cursor.getString(0);
}
// 关闭游标
cursor.close();
return snippet;
}
// 如果查询失败则抛出异常
throw new IllegalArgumentException("Note is not found with id: " + noteId);
}
/**
*
*
* @param snippet
* @return String
*/
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
snippet = snippet.trim();
int index = snippet.indexOf('\n');
snippet = snippet.trim(); // 去除字符串两端的空格
int index = snippet.indexOf('\n'); // 查找第一个换行符位置
if (index != -1) {
snippet = snippet.substring(0, index);
snippet = snippet.substring(0, index); // 截取换行符之前的部分作为摘要信息
}
}
return snippet;
}
}

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