第三次更新

main
一条鱼和xiao 3 months ago
parent a4243f1b7a
commit c4928bf7fc

@ -16,18 +16,36 @@
package net.micode.notes.gtask.exception;
/**
*
* Google
* RuntimeException
*/
public class ActionFailureException extends RuntimeException {
// 序列化版本UID用于版本控制
private static final long serialVersionUID = 4425249765923293627L;
/**
*
*/
public ActionFailureException() {
super();
}
/**
*
* @param paramString
*/
public ActionFailureException(String paramString) {
super(paramString);
}
/**
*
* @param paramString
* @param paramThrowable
*/
public ActionFailureException(String paramString, Throwable paramThrowable) {
super(paramString, paramThrowable);
}
}
}

@ -16,18 +16,36 @@
package net.micode.notes.gtask.exception;
/**
*
* Google
* Exception
*/
public class NetworkFailureException extends Exception {
// 序列化版本UID用于版本控制
private static final long serialVersionUID = 2107610287180234136L;
/**
*
*/
public NetworkFailureException() {
super();
}
/**
*
* @param paramString
*/
public NetworkFailureException(String paramString) {
super(paramString);
}
/**
*
* @param paramString
* @param paramThrowable
*/
public NetworkFailureException(String paramString, Throwable paramThrowable) {
super(paramString, paramThrowable);
}
}
}

@ -35,12 +35,23 @@ import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
/**
*
*
*/
public class BackupUtils {
// 日志标签,用于在日志中标识此工具类的相关操作
private static final String TAG = "BackupUtils";
// Singleton stuff
// 单例实例用于确保BackupUtils类只有一个实例存在
private static BackupUtils sInstance;
/**
* BackupUtils
*
*
* @param context 访
* @return BackupUtils
*/
public static synchronized BackupUtils getInstance(Context context) {
if (sInstance == null) {
sInstance = new BackupUtils(context);
@ -49,43 +60,74 @@ public class BackupUtils {
}
/**
* Following states are signs to represents backup or restore
* status
*
*
*/
// Currently, the sdcard is not mounted
public static final int STATE_SD_CARD_UNMOUONTED = 0;
// The backup file not exist
public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
// The data is not well formated, may be changed by other programs
public static final int STATE_DATA_DESTROIED = 2;
// Some run-time exception which causes restore or backup fails
public static final int STATE_SYSTEM_ERROR = 3;
// Backup or restore success
public static final int STATE_SUCCESS = 4;
// 外部存储设备如SD卡未挂载
public static final int STATE_SD_CARD_UNMOUONTED = 0;
// 备份文件不存在
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过
public static final int STATE_DATA_DESTROIED = 2;
// 运行时异常导致备份或恢复失败
public static final int STATE_SYSTEM_ERROR = 3;
// 备份或恢复成功
public static final int STATE_SUCCESS = 4;
// 文本导出工具类实例,用于实际的文本导出操作
private TextExport mTextExport;
/**
*
*
* @param context TextExport
*/
private BackupUtils(Context context) {
mTextExport = new TextExport(context);
}
/**
*
*
* @return truefalse
*/
private static boolean externalStorageAvailable() {
return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
}
/**
*
* TextExportexportToText
*
* @return STATE_SUCCESS
*/
public int exportToText() {
return mTextExport.exportToText();
}
/**
*
*
* @return
*/
public String getExportedTextFileName() {
return mTextExport.mFileName;
}
/**
*
*
* @return
*/
public String getExportedTextFileDir() {
return mTextExport.mFileDirectory;
}
/**
*
*/
private static class TextExport {
// 笔记数据投影,指定查询笔记时需要返回的列
private static final String[] NOTE_PROJECTION = {
NoteColumns.ID,
NoteColumns.MODIFIED_DATE,
@ -93,12 +135,16 @@ public class BackupUtils {
NoteColumns.TYPE
};
// 笔记ID列在NOTE_PROJECTION数组中的索引
private static final int NOTE_COLUMN_ID = 0;
// 笔记修改日期列在NOTE_PROJECTION数组中的索引
private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
// 笔记摘要列在NOTE_PROJECTION数组中的索引
private static final int NOTE_COLUMN_SNIPPET = 2;
// 数据投影,指定查询笔记相关数据时需要返回的列
private static final String[] DATA_PROJECTION = {
DataColumns.CONTENT,
DataColumns.MIME_TYPE,
@ -108,23 +154,39 @@ public class BackupUtils {
DataColumns.DATA4,
};
// 数据内容列在DATA_PROJECTION数组中的索引
private static final int DATA_COLUMN_CONTENT = 0;
// 数据MIME类型列在DATA_PROJECTION数组中的索引
private static final int DATA_COLUMN_MIME_TYPE = 1;
// 数据调用日期列在DATA_PROJECTION数组中的索引
private static final int DATA_COLUMN_CALL_DATE = 2;
// 数据电话号码列在DATA_PROJECTION数组中的索引
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;
// 文本格式数组,从资源中获取的文本格式字符串数组
private final String[] TEXT_FORMAT;
// 文本格式中文件夹名称的索引
private static final int FORMAT_FOLDER_NAME = 0;
// 文本格式中笔记日期的索引
private static final int FORMAT_NOTE_DATE = 1;
// 文本格式中笔记内容的索引
private static final int FORMAT_NOTE_CONTENT = 2;
// 上下文对象,用于访问资源和内容解析器等
private Context mContext;
// 导出的文件名
private String mFileName;
// 导出的文件目录
private String mFileDirectory;
/**
*
*
* @param context
*/
public TextExport(Context context) {
TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
mContext = context;
@ -132,28 +194,36 @@ public class BackupUtils {
mFileDirectory = "";
}
/**
*
*
* @param id TEXT_FORMAT
* @return
*/
private String getFormat(int id) {
return TEXT_FORMAT[id];
}
/**
* Export the folder identified by folder id to text
*
* exportNoteToText
*
* @param folderId ID
* @param ps
*/
private void exportFolderToText(String folderId, PrintStream ps) {
// Query notes belong to this folder
// 查询属于该文件夹的笔记
Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] {
folderId
}, null);
NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[]{folderId}, null);
if (notesCursor != null) {
if (notesCursor.moveToFirst()) {
do {
// Print note's last modified date
// 打印笔记的最后修改日期
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
// 查询属于该笔记的数据
String noteId = notesCursor.getString(NOTE_COLUMN_ID);
exportNoteToText(noteId, ps);
} while (notesCursor.moveToNext());
@ -163,20 +233,22 @@ public class BackupUtils {
}
/**
* Export note identified by id to a print stream
* ID
* MIME
*
* @param noteId ID
* @param ps
*/
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);
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
// 打印电话号码
String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
String location = dataCursor.getString(DATA_COLUMN_CONTENT);
@ -185,11 +257,11 @@ public class BackupUtils {
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
phoneNumber));
}
// Print call date
// 打印通话日期
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
.format(mContext.getString(R.string.format_datetime_mdhm),
callDate)));
// Print call attachment location
// 打印通话附件位置
if (!TextUtils.isEmpty(location)) {
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
location));
@ -205,9 +277,9 @@ public class BackupUtils {
}
dataCursor.close();
}
// print a line separator between note
// 打印笔记之间的分隔符
try {
ps.write(new byte[] {
ps.write(new byte[]{
Character.LINE_SEPARATOR, Character.LETTER_NUMBER
});
} catch (IOException e) {
@ -216,7 +288,10 @@ public class BackupUtils {
}
/**
* Note will be exported as text which is user readable
*
*
*
* @return STATE_SUCCESS
*/
public int exportToText() {
if (!externalStorageAvailable()) {
@ -229,7 +304,7 @@ public class BackupUtils {
Log.e(TAG, "get print stream error");
return STATE_SYSTEM_ERROR;
}
// First export folder and its notes
// 先导出文件夹及其笔记
Cursor folderCursor = mContext.getContentResolver().query(
Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION,
@ -240,9 +315,9 @@ public class BackupUtils {
if (folderCursor != null) {
if (folderCursor.moveToFirst()) {
do {
// Print folder's name
// 打印文件夹名称
String folderName = "";
if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) {
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);
@ -257,11 +332,11 @@ public class BackupUtils {
folderCursor.close();
}
// Export notes in root's folder
// 导出根文件夹中的笔记
Cursor noteCursor = mContext.getContentResolver().query(
Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION,
NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
NoteColumns.TYPE + "=" + Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
+ "=0", null, null);
if (noteCursor != null) {
@ -270,7 +345,7 @@ public class BackupUtils {
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
// 查询属于该笔记的数据
String noteId = noteCursor.getString(NOTE_COLUMN_ID);
exportNoteToText(noteId, ps);
} while (noteCursor.moveToNext());
@ -283,7 +358,10 @@ public class BackupUtils {
}
/**
* Get a print stream pointed to the file {@generateExportedTextFile}
*
*
*
* @return null
*/
private PrintStream getExportToTextPrintStream() {
File file = generateFileMountedOnSDcard(mContext, R.string.file_path,
@ -310,7 +388,13 @@ public class BackupUtils {
}
/**
* Generate the text file to store imported data
*
*
*
* @param context
* @param filePathResId ID
* @param fileNameFormatResId ID
* @return null
*/
private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
StringBuilder sb = new StringBuilder();
@ -339,6 +423,4 @@ public class BackupUtils {
return null;
}
}
}
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