|
|
/*
|
|
|
* 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.Context;
|
|
|
import android.database.Cursor;
|
|
|
import android.os.Environment;
|
|
|
import android.text.TextUtils;
|
|
|
import android.text.format.DateFormat;
|
|
|
import android.util.Log;
|
|
|
|
|
|
import net.micode.notes.R;
|
|
|
import net.micode.notes.data.Notes;
|
|
|
import net.micode.notes.data.Notes.DataColumns;
|
|
|
import net.micode.notes.data.Notes.DataConstants;
|
|
|
import net.micode.notes.data.Notes.NoteColumns;
|
|
|
|
|
|
import java.io.File;
|
|
|
import java.io.FileNotFoundException;
|
|
|
import java.io.FileOutputStream;
|
|
|
import java.io.IOException;
|
|
|
import java.io.PrintStream;
|
|
|
|
|
|
/*
|
|
|
这段代码主要实现了备份手机便签的功能
|
|
|
这个备份手机便签的功能的主要思想是将手机上的便签及其相关信息导出到文本文件中，以实现备份和恢复的功能
|
|
|
具体来说，该功能会使用Android系统提供的内容提供器(ContentProvider)来获取手机上的便签数据，然后将这些数据格式化输出到文本文件中
|
|
|
用户可以在需要时将该文本文件拷贝到其他设备上，或者重新导入到手机中，以实现便签的备份和恢复。
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
//单例对象是一种确保在应用程序中只有一个实例被创建的设计模式
|
|
|
//提供一种全局的访问方式
|
|
|
//这个类描述备份工具的属性和行为
|
|
|
public class BackupUtils {
|
|
|
// 声明一个常量 TAG，用于在日志中标识这个类
|
|
|
private static final String TAG = "BackupUtils";
|
|
|
// Singleton stuff
|
|
|
// 声明一个私有的静态变量 sInstance保存单例对象
|
|
|
private static BackupUtils sInstance;
|
|
|
/*
|
|
|
如果单例对象是空的，创建一个新的实例
|
|
|
*/
|
|
|
public static synchronized BackupUtils getInstance(Context context) {
|
|
|
if (sInstance == null) {
|
|
|
sInstance = new BackupUtils(context);
|
|
|
}
|
|
|
return sInstance;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Following states are signs to represents backup or restore
|
|
|
* status
|
|
|
*/
|
|
|
// Currently, the sdcard is not mounted
|
|
|
//SD卡没有挂载的状态码
|
|
|
public static final int STATE_SD_CARD_UNMOUONTED = 0;
|
|
|
//备份文件不存在的状态码
|
|
|
// The backup file not exist
|
|
|
public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
|
|
|
//数据格式不正确，可能被其他程序修改的状态码
|
|
|
// The data is not well formated, may be changed by other programs
|
|
|
public static final int STATE_DATA_DESTROIED = 2;
|
|
|
//运行异常导致恢复或者备份失败的状态码
|
|
|
// Some run-time exception which causes restore or backup fails
|
|
|
public static final int STATE_SYSTEM_ERROR = 3;
|
|
|
//运行异常导致恢复或者备份成功的状态码
|
|
|
// Backup or restore success
|
|
|
public static final int STATE_SUCCESS = 4;
|
|
|
//这个用于导出备份数据到文本文件
|
|
|
private TextExport mTextExport;
|
|
|
//获取
|
|
|
private BackupUtils(Context context) {
|
|
|
mTextExport = new TextExport(context);
|
|
|
}
|
|
|
private static boolean externalStorageAvailable() {
|
|
|
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 = "";
|
|
|
mFileDirectory = "";
|
|
|
}
|
|
|
|
|
|
private String getFormat(int id) {
|
|
|
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
|
|
|
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.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);
|
|
|
} 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) {
|
|
|
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)) {
|
|
|
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() {
|
|
|
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
|
|
|
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
|
|
|
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);
|
|
|
} 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());
|
|
|
sb.append(context.getString(filePathResId));
|
|
|
File filedir = new File(sb.toString());
|
|
|
sb.append(context.getString(
|
|
|
fileNameFormatResId,
|
|
|
DateFormat.format(context.getString(R.string.format_date_ymd),
|
|
|
System.currentTimeMillis())));
|
|
|
File file = new File(sb.toString());
|
|
|
|
|
|
try {
|
|
|
if (!filedir.exists()) {
|
|
|
filedir.mkdir();
|
|
|
}
|
|
|
if (!file.exists()) {
|
|
|
file.createNewFile();
|
|
|
}
|
|
|
return file;
|
|
|
} catch (SecurityException e) {
|
|
|
e.printStackTrace();
|
|
|
} catch (IOException e) {
|
|
|
e.printStackTrace();
|
|
|
}
|
|
|
|
|
|
return null;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
|
