|
|
BackupUtils：
|
|
|
|
|
|
package net.micode.notes.tool;
|
|
|
|
|
|
public class BackupUtils {
|
|
|
private static final String TAG = "BackupUtils";
|
|
|
// Singleton stuff
|
|
|
private static BackupUtils sInstance; //类里面定义自己类的对象
|
|
|
|
|
|
public static synchronized BackupUtils getInstance(Context context) {
|
|
|
//当某个线程运行时，要检查其他线程是否也在进行
|
|
|
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 手机内没有SD卡
|
|
|
public static final int STATE_SD_CARD_UNMOUONTED = 0;
|
|
|
// The backup file not exist 没有备份文件夹
|
|
|
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，也可能被修改
|
|
|
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() { //外部存储功能是否正常
|
|
|
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) { //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来制定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，看是callnote或者note二者中的哪一个，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 输出电话号
|
|
|
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 打印调用附件位置
|
|
|
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 在注释间打印分隔符
|
|
|
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
|
|
|
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 查询数据属于此备注
|
|
|
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
|
|
|
} 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()); //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;
|
|
|
}
|
|
|
}
|
|
|
|
